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Degreasing agents

Liquid degreasers

Pragolod 13
surfactant –based degraesing agent with passivating effect

Pragolod 13
surfactant –based degraesing agent with passivating effect

Pragolod 13 is a liquid, highly efficient alkaline surfactant degreaser of a high passivating capability suitable for cleaning of steel, cast iron, glass and ceramic ware. The agent contains adsorption corrosion inhibitors which may impart both inter-operation as well as temporary corrosion protection to the steel parts to be degreased.

The agent is appropriate for the inter-operation degreasing and for machine cleaning, e.g. in the WAP devices or in cleaning desks in the machine repair shops. It may be even used at lower application temperatures and, therefore, as an alternative to solvent degreasers including chlorinated ones at hand-assisted and machine cleaning.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C)
Hand cleaning 10 - 50 % 20 - 40
Immersion 5 - 20 % 40 - 85
Spraying 1 – 5 % 40 - 70
Ultrasonic cleaning 2 – 7 % 50 - 70
High-pressure cleaning 1 - 5 % 20 - 100

Pragolod 14
liquid alkaline degreasing and tumbling agent of low foamability and with passivating effect

Pragolod 14
liquid alkaline degreasing and tumbling agent of low foamability and with passivating effect

Pragolod 14 is particularly suitable for the degreasing and cleaning of the steel and cast iron substrates between two subsequent technological operations and should be applied by spraying. It contains low-foaming surfactants and, hence, is convenient to be especially used for machinery cleaning, e.g. in the WAP spraying machines or in cleaning desks in the shops. Furthermore, it may be alternatively applied for cleaning at lower temperatures and, therefore, for both machinery as well as hand-assisted cleaning operations as a replacement for solvent-based degreasers including chlorine hydrocarbons. To boost the anticorrosion protection affect of the agent, its elevated concentration within 3 – 5% and drying without a preliminary rinse should be employed. Pragolod 14 is a liquid alkaline agent for combined technological operations degreasing together with surface passivation and is formulated on the basis of both low-foaming surfactants of high biodegradability and corrosion inhibitors. It should be particularly used for both spraying and immersion degreasing of steel and cast iron substrates and tumbling of ferrous metals. Besides, it may be used for passivation of ferrous metals after pickling or other technological operations in water – based agents if an active steel surface is needed to be pasivated. Pragolod 14 is completely free of any inorganic components which otherwise might cause salt deposits on the cleaned but still unrinsed surface. It is also applicable for the passivation of the ferrous surfaces after other degreasing operations, pickling in acids or tumbling operations of steel parts together with the passivation. At the agent formulation, both low foaming and passivating efficiency were emphasized and, therefore, compared with the similar agents of, however, enhanced foamability such as Pragolod Grato 12, Pragolod 13 or Pragolod 44, displays a slightly inferior degreasing performance. Pragolod 14 is a clear colourless or yellowish alkaline liquid (pH value within 10 – 11) completely miscible with water, the clouding point of the 5% bath being about 33 – 38°C and the pH value about 10.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C)
Hand cleaning 10 - 50 % 20 - 40
Immersion 5 - 20 % 40 - 85
Spraying 1 – 5 % 40 - 70
Ultrasonic cleaning 2 – 7 % 50 - 70
High-pressure cleaning 1 - 5 % 20 - 100
Tumbling 1 - 6 % ambient

Pragolod 16
liquid degreasing and washing agent

Pragolod 16
liquid degreasing and washing agent

Pragolod 16 is a liquid weakly alkaline water-based degreasing and washing agent containig blend of highly effective surfactants, phosphates, water softeners and and corrosion inhibitors for cleaning steel and cast iron parts from the hygrophobic soils such as conservation oils, waxes, greasing emulsions, pastes etc.

It is suitable for the degreasing operations in industry and should be applied by ultrasonic-assisted immersion, or spray in the degreasing lines and machines as well as at the deconservation operations by mobile pressure cleaning machines such as Wap, Karcher etc. To be further used for the degreasing of both final parts and semi-products, mobile machines and other technological equipments of industrial plants. The special additives contained prevent undesirable leaching of cobalt from the cleaned parts made of sintered carbides and tool steels. The typical feature of the agent is its deemulgation activity which results in rapid separation of the released oils and soil on the degreasing bath surface. Capable to remove the solid particles of graphite and carbides from the surface cleaned.

Operating conditions

Application Concentration recommended Operating temperature (°C) Degreasing time (min)
Immersion 2 - 6% 40 - 70 5 - 20
Spraying 1 – 5% 55 - 80 5 - 15
High-pressure cleaning 0,5 - 4% 20 - 80 1 - 5
by brush + spray 10 - 20% 20 - 40 20 + 0,5

Pragolod 18
surfactants - based degreasing agent of nearly neutral pH-value

Pragolod 18
surfactants - based degreasing agent of nearly neutral pH-value

Nearly neutral surfactant degreaser suitable for the degreasing of steel, cast iron, copper and aluminium and its alloys and painted surfaces by immersion, spraying, wiping and ultrasonic-assisted techniques.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C)
Hand cleaning 5 - 50 % 20 - 40
Immersion 2 - 10 % 20 - 80
Spraying 3 – 7 % 40 - 70
pH value (1 % solution) 7 - 8

Pragolod 20 UF
all-purpose degreaser regenerable by ultrafiltration

Pragolod 20 UF
all-purpose degreaser regenerable by ultrafiltration

Pragolod 20 UF is a versatile liquid degreaser suitable for the cleaning of steel, cast iron, aluminium and its alloys, copper and its alloys and, to a limited extent, painted surfaces. The chemical composition of the agent enables a continuous regeneration of the degreasing bath by ultrafiltration and microfiltration.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C) Exposition (min.)
Immersion 4 - 10 % 50 - 85 2 - 8
Spraying 2 - 8 % 40 - 80 0,5 - 5
Ultrasonic cleaning 3 - 8 % 50 - 80 1 - 5
High-pressure cleaning 0,3 - 1 % 40 - 75 0,5 - 3

Pragolod 22 Ms
acid agent for the degreasing of non-ferrous metals

Pragolod 22 Ms
acid agent for the degreasing of non-ferrous metals

Liquid acid-based degreaser suitable for the cleaning of austenitic stainless steel, copper and its alloys and precious metals and their alloys by immersion or immersion with ultrasonic assistance. The agent contains a larger amount of biodegradable surfactants capable to remove strongly stuck residues of grinding or polishing pastes.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C)
Immersion 5 - 15 % 50 - 85
Spraying 2 - 5 % 40 - 85
Ultrasonic cleaning 3 - 10 % 40 - 75

Pragolod 32
strongly alkaline degreaser for steel

Pragolod 32
strongly alkaline degreaser for steel

Liquid strongly alkaline and medium emulsifying degreaser suitable for the bath regeneration by a grease skimming technique or microfiltration. Suitable for immersion, spraying or ultrasonic-assisted applications of steel and cast iron.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C)
Immersion 5 - 15 % 60 - 80
Spraying 2 - 7 % 50 - 80
Ultrasonic cleaning 3 - 10 % 50 - 70
pH value (5 % solution) 12 - 13

Pragolod 44
liquid low-foaming degreaser with a mild passivating effect

Pragolod 44
liquid low-foaming degreaser with a mild passivating effect

Pragolod 44 is a liquid degreaser suitable for cleaning and degreasing of steel, cast iron and, to a limited extent, of aluminium and its alloys. It is in general applicable for cleaning of painted surfaces as well but, with regard to the variability of the paints types, a test for paint durability in contact with the degreaser should be carried out at first. The agent contains components which may impart both corrosion protection at the following machinery operations as well as temporary corrosion protection to the steel parts to be degreased. As far as the subsequent surface treatment operation allows, the overall passivating effect of the degreaser may be even enhanced by its incorporation into the final rinse until the approximate pH value 10 of the rinse is reached. The agent is a liquid of yellowish-to-brownish colour, classified as irritant with respect to the valid legislation, and containing a blend of both inorganic as well as organic components and non-ionic surfactants of good biodegradability. The surfactants contained are of high performance and low foamability so that could be conveniently used for the applications by immersion, spraying, high-pressure and ultrasonic-assisted degreasing.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C) Exposition (min.)
Immersion 3 - 10 % 45 - 75 2 - 8
Ultrasonic cleaning 1 - 8 % 45 - 75 2 - 5
Spraying 1 - 5 % 45 - 75 0,2 - 4
High-pressure cleaning 0,5 - 1 % 45 - 75 0,5 - 3

Pragolod 46
alkaline degreaser and cleaner

Pragolod 46
alkaline degreaser and cleaner

A liquid weak alkaline degreaser and cleaner convenient, for the degreasing of steel, cast iron, aluminium and copper and their alloys.It is also applicable for the cleaning of painted and chromated zinc electroplated surfaces. It contains low-foaming surfactants and, therefore, may be used for the applications by immersion, spraying, high-pressure cleaning through the WAP device, ultrasonic-assisted degreasing, industrial degreasing in containers, chambers as well as through degreasing machines.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C) Exposition (min.)
Immersion 4 - 10 % 50 - 85 2 - 8
Ultrasonic cleaning 1 - 6 % 40 - 80 0,5 - 3
Spraying 2 - 6 % 40 - 85 1 - 3
High-pressure cleaning 0,5 - 1 % 40 - 75 0,5 - 3

Pragolod 710
versatile degreaser for water pressure cleaning

Pragolod 710
versatile degreaser for water pressure cleaning

Liquid degreaser for a rough cleaning of steel and cast iron by water pressure cleaning machines. The composition of the agent ensures removing of thicker impurities of hydrophobic character off the surface.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C)
High-pressure cleaning 0,2 - 4 % 80 - 120
Density of the concentrate (20 °C) 1,135 g/cm3
pH value (1 % solution) 11 - 12

Pragolod 780
versatile degreasing and washing agent for pressure cleaning

Pragolod 780
versatile degreasing and washing agent for pressure cleaning

A liquid, mild alkaline water-based degreasing and washing agent suitable first for cleaning of all kinds of both metallic (steel, cast iron, copper and aluminium and their alloys etc.) and non-metallic (glass, ceramics, plastics) surfaces from hydrophobic impurities, such as preservative oils, waxes, lubricating emulsions, pastes etc. by mobile pressure cleaning machines (e.g. WAP, Karcher, Kranzle etc,).
Besides that, application of the agent by spraying or immersion techniques in industrial degreasing lines and machines as well as for hand washing, is possible. In general, it can find its use for cleaning of both final as well as semi finished products, machinery and equipment in services, industry and shops.

Pragolod Grato 12
alkaline degreaser with passivating effect

Pragolod Grato 12
alkaline degreaser with passivating effect

All-purpose, very efficient liquid alkaline degreaser with a moderate passivating effect. It is predominantly suitable for immersion degreasing of both steel and cast iron. It contains non-ionic and easily biodegradable surfactants.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C)
Hand cleaning 10 - 50 % 20 - 40
Immersion 5 - 20 % 20 - 90
Spraying 2 – 10 % 40 - 70
Ultrasonic cleaning 0,5 – 2 % 50 - 70

Powder degreasers / For steel and iron

Pragolod 57 N
highly efficient and low-foaming degreaser

Pragolod 57 N
highly efficient and low-foaming degreaser

Strongly alkaline low-foaming and medium-emulsifying degreaser suitable predominantly for both immersion and spraying degreasing of steel and cast iron. The product is, above all, suitable for removing of all thicker deposits of lubricants and grease-based temporary protection agents strongly adhering to the steel surface and, moreover, for new types of biologically degradable vegetable oils as well as rape-seed oil. Its good saponifying efficiency has also been proved for animal greases and metal soaps. The product contains a dispersion agent which facilitates easy removing of graphite residues and solid particles firmly embedded at the surface after all machining processes. It may be used, to a limited extent, for degreasing of zinc electroplated as well as galvanized steel but should be, however, avoided for degreasing of non-ferrous metals and their alloys as it might etch their surface uniformly.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C) Exposition (min.)
Immersion 1 - 6 % 60 - 85 1 - 8
Spraying 0,5 - 3 % 55 - 80 0,5 - 3
Ultrasonic cleaning 0,5 - 3 % 55 - 80 1 - 3

Pragolod 57 UF
highly efficient degreaser the bath of which being easily regenerated by ultrafiltration

Pragolod 57 UF
highly efficient degreaser the bath of which being easily regenerated by ultrafiltration

Strongly alkaline low-emulsifying degreaser suitable predominantly for immersion degreasing of steel and cast iron in the baths provided with oil separator and bath regeneration by microfiltration. The product is, above all, suitable for removing of all thicker deposits of lubricants and grease-based temporary protection agents strongly adhering to the steel surface and, moreover, for new types of biologically degradable vegetable oils as well as rape-seed oil. Its good saponifying efficiency has also been proved for removal of animal greases and metal soaps. The product contains a dispersion agent which facilitates easy removing of graphite residues and solid particles firmly embedded at the surface after all machining processes. It should be, however, avoided for degreasing of non-ferrous metals and their alloys as it might etch their surface uniformly.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C) Exposition (min.)
Immersion 2 - 6 % 50 - 80 2 - 8
Spraying 0,5 - 3 % 50 - 70 0,5 - 3

Pragolod 59
highly alkaline and very efficient degreaser

Pragolod 59
highly alkaline and very efficient degreaser

Strongly alkaline, low-foaming and low-emulsifying degreaser suitable for both immersion and spraying degreasing of steel and cast iron. The product is suitable, above all, for removing of all thicker deposits of lubricants strongly stuck to the surface and, moreover, for new types of biologically degradable vegetable oils as well as rape-seed oil. Its good saponifying efficiency has been also proved for animal greases and metal soaps. This product contains a dispersing agent which facilitates easy removing of graphite residues and solid particles which otherwise are very difficult to be separated off the surface. It should not be used for degreasing of non-ferrous metals as it might etch their surface uniformly.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C) Exposition (min.)
Immersion 1 - 8 % 60 - 90 5 - 10
Spraying 0,5 - 3 % 55 - 80 0,5 - 3
Ultrasonic cleaning 0,5 - 3 % 55 - 80 1 - 3

Pragolod 90
low-foaming degreaser with passivating effect

Pragolod 90
low-foaming degreaser with passivating effect

The agent for degreasing and passivating of steel and cast iron by immersion, spraying or high-pressure spraying techniques in circulation circuits or by ultrasonic-assisted immersion. It should not be used for degreasing of non-ferrous metals as it might etch their surface uniformly.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C)
Immersion 1 - 5 % 60 - 90
Spraying 0,5 - 3 % 60 - 90

Pragolod RADALOD
strong degreaser

Pragolod RADALOD
strong degreaser

Strong alkaline degreaser suitable for removing of thicker layers of oil-based preservative coatings, vaselines etc. from the surface of steel or cast iron. It may be applied by immersion or spraying.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C)
Immersion 2 - 7 % 70 - 90
Spraying 1 - 3 % 60 - 75
Ultrasonic cleaning 1,5 - 5 % 60 - 75

Pragolod RAD 10
strong low-foaming and low-emulsifying degreaser

Pragolod RAD 10
strong low-foaming and low-emulsifying degreaser

Strong alkaline low-emulsifying degreaser of steel convenient for spraying, immersion and ultrasonic-assisted ways of application. It is recommended for the running bath to be regenerated by oil-separator. Pragolod RAD 10 is a low-foaming, strongly alkaline degreaser, suitable especially for removing of thicker layers of preservative agents and other dirt of a fatty nature tightly adhering to steel or cast iron substrates. Owing to its non-emulsifying activity, the dirt and other fatty contaminants being removed from the substrate are very well separated in the degreasing bath. The product is particularly efficient for the degreasing of new types of biodegradable oils derived from the esters of unsaturated fatty acids, such as rapeseed oil and, moreover, is capable to saponify both animals fat and metal salts of fatty acids (metal soaps). With respect to the strong alkalinity, the agent is not recommended for degreasing of copper, aluminium and their alloys as it may etch their surface evenly.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C) Exposition (min.)
Immersion 1 - 5 % 40 - 80 2 - 10
Spraying 0,5 - 3 % 45 - 75 1 - 5
Ultrasonic cleaning 0,5 - 3 % 40 - 75 1 - 5

Powder degreasers / All-purpose types

Pragolod 33
degreaser for removal of both grinding as well as polishing pastes and flash rust

Pragolod 33
degreaser for removal of both grinding as well as polishing pastes and flash rust

The degreaser Pragolod 33, in combination with surfactant component Pragolod DT 33, is a very efficient and nearly of neutral pH value degreasing bath suitable for removal of the residues of both grinding and polishing pastes from copper an its alloys, austenitic steel, ceramic and, with a constraint, aluminium and its alloys, steel and galvanized steel which, however, might be etched mildly at the process. The pH value of the bath varies within 7 – 8 which makes full use of the agent particularly for cleaning of polished brass parts. The agent is suitable for the degreasing operations accomplished by immersion or ultrasonic-assisted immersion.

Owing to its mild etching effect on the surface cleaned, the agent may be used as a flash rust stripper. For this purpose, only the Pragolod 33 component otherwise recommended for the surface cleaning and neutralization just after the acid-based surface treatment operations (e.g. pickling) should be used for the preparation of the etching bath.

Running conditions of the bath

Way of application Concentration recommended   Bath temperature (°C) Exposure time
  Pragolod 33 Pragolod DT 33
Immersion 2,0 - 5,0 % 1,0 - 2,0 % 60 - 85°C 2 - 10 min.
Ultrasonic cleaning 1,0 - 3,5 % 0,5 - 2,0 % 55 - 80°C 1 - 5 min.
Cleaning, neutralization 1,5 - 3,0 % - 20 - 40°C 1 - 3 min.

Pragolod 54
alkaline low-emulsifying degreaser

Pragolod 54
alkaline low-emulsifying degreaser

Pragolod 54 je deemulgující středně alkalický odmašťovací přípravek, vhodný zejména pro odmašťování oceli, pozinkované oceli a ferrozinku. Přípravek je určen pro průmyslové odmašťování ve vanách, komorových nebo průchozích postřikových odmašťovacích strojích nebo v ultrazvukových čistících zařízeních. Vzhledem k deemulgujícímu charakteru by měl být tento přípravek aplikován pouze v zařízeních, která mají možnost kontinuálně nebo periodicky odstraňovat oddělenou olejovou fázi (např. olejovým odlučovačem, separátorem apod.) a při ponorovém způsobu odmaštění by zařízení mělo být vybaveno přestřikem hladiny. Přípravek má potlačenou pěnivost a tudíž je vhodný i pro aplikaci postřikem. Případné další snížení pěnivosti odmašťovací lázně lze dosáhnout jednorázovým přídavkem odpěňovacího přípravku Pragolod AF 54 nebo Pragolod AF 50.

Pracovní podmínky

Aplikace Doporučená koncentrace Teplota (°C) Expoziční doba (min.)
Ponor 1 - 6 % 60 - 85 2 - 8
Postřik 0,5 - 2 % 55 - 75 0,5 - 2
Ultrazvuk 1 - 5 % 55 - 75 0,5 - 3

Pragolod 55 UF
ultrafiltrovatelný odmašťovač s inhibičním účinkem

Pragolod 55 UF
ultrafiltrovatelný odmašťovač s inhibičním účinkem

Pragolod 54 is a low-emulsifying and medium alkaline degreaser suitable for industrial degreasing of steel, galvanized steel and ferrozinc in degreasing containers, spraying chambers or passing-through machines and in ultrasonic-assisted cleaning appliances. Owing to its deemulsifying performance, the agent should be only applied if continual or periodic removal of separated oils is possible e.g. by oil separators or skimmers. In case of the immersion degreasing the bath should be equipped with an overspraying of the bath surface. Due to a limited foamability the agent is operating properly even in the spraying application of the degreasing bath and, if further suppression of foaming is demanded, the defoamers Pragolod AF 54 or Pragolod AF 50 may be added in one dose.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C) Exposition (min.)
Immersion 1 - 6 % 60 - 85 2 - 8
Spraying 0,5 - 2 % 55 - 75 0,5 - 2
Ultrasonic cleaning 1 - 5 % 55 - 75 0,5 - 3

Pragolod 58
versatile alkaline degreaser convenient for tumbling processes of the machinery parts

Pragolod 58
versatile alkaline degreaser convenient for tumbling processes of the machinery parts

Pragolod 58 is a cleaning agent of medium alkalinity suitable for both immersion as well as spraying degreasing the substrates made of steel, cast iron and copper and its alloys just before further surface treatment processes, such as lacquering and galvanizing and for a rough degreasing before electroplating. Moreover, it may be also used either for the vibrational polishing processes, employing small glass beads together with the powdery agent, of the parts made of both ferrous and non-ferrous metals, or for direct incorporation into the tumbling barrels.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C) Exposition (min.)
Immersion 1 - 7 % 50 - 80 2 - 10
Spraying 0,5 - 3 % 50 - 85 1 - 5
Tumbling 2 - 5 % okolí 10 - 200

Pragolod 83
low-emulsifying degreaser the bath of which is capable of regeneration by ultrafiltration

Pragolod 83
low-emulsifying degreaser the bath of which is capable of regeneration by ultrafiltration

Alkaline low-emulsifying degreaser for immersion degreasing of steel and its alloys, steel and cast iron. The agent contains alkalis which will ensure degreasing together with pickling of aluminium and its alloys in one bath. The agent is formulated to enable the degreasing bath regeneration by ultrafiltration or microfiltration.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C) Exposition (min.)
Immersion 2,5 - 5 % 65 - 85 5 - 8

Pragolod 86 S
highly efficient medium alkaline degreaser

Pragolod 86 S
highly efficient medium alkaline degreaser

Medium alkaline and highly efficient agent for both immersion and ultrasonic-assisted degreasing of steel, cast iron, aluminium and copper and their alloys. A higher content of non-ionic surfactants and dispergators with easy biodegradability will ensure good degreasing efficiency at the temperature above 55°C.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C)
Immersion 0,5 - 4 % 60 - 85
Spraying 0,2 - 1,5 % 55 - 80
Ultrasonic cleaning 0,2 - 2 % 55 - 80

Pragolod 86
low-foaming and medium alkaline degreaser

Pragolod 86
low-foaming and medium alkaline degreaser

Medium alkaline degreaser convenient for immersion, spraying and ultrasonic-assisted degreasing of steel, cast iron, aluminium and copper and their alloys. The agent contains low-foaming and easily biodegradable non-ionic surfactants with very good degreasing performance.

Way of application Concentration recommended Bath temperature (°C)
Immersion 1 - 5 % 60 - 85
Spraying 0,5 - 1,5 % 55 - 80
Ultrasonic cleaning 1 - 3 % 55 - 80

 

Pragolod 88
highly efficient mildly alkaline degreaser

Pragolod 88
highly efficient mildly alkaline degreaser

Mildly alkaline degreaser of a very high performance for both immersion as well as ultrasonic-assisted degreasing of steel, cast iron, aluminium and copper and their alloys. The agent contains a higher concentration of efficient and biodegradable non-ionic and anionic surfactants of outstanding degreasing performance. The agent is formulated to enable the degreasing bath regeneration by microfiltration.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C) Exposition (min.)
Immersion 0,5 - 5 % 60 - 85 2 - 10

Agents for electrochemical degreasing

Pragolod 60
agent for cathodic degreasing

Pragolod 60
agent for cathodic degreasing

Strongly alkaline degreaser suitable for electrolytical cleaning of steel and copper and their alloys just before the electroplating process. The bath operates in the cathodic cycle.

Running conditions of the bath

Cathodic mode
Start-up dose for 100 litres of the bath 7 – 10 kg
Current density 10 A/dm2
Voltage 7 - 9 V
Bath temperature 70 - 80 °C
Operation time for steel, copper 1 - 2 min.
Operation time for brass 1 - 2 min.
Electrodes AKVN stainless steel
Work area/electrode area ratio 1 : 2

Pragolod 61
agent for both cathodic and anodic degreasing

Pragolod 61
agent for both cathodic and anodic degreasing

Strongly alkaline and very efficient degreaser convenient for electrochemical degreasing of steel and copper and their alloys just before the electroplating process. It may be applied by both cathodic as well as anodic cycles and complies with the stringent ecological demands for up-to-date surface treatment operations. It contains low-foaming and biodegradable anionic surfactants of high performance.

Running conditions of the bath

Concentration recommended 7 - 10 %
Running bath temperature recommended Steel 60 - 80 °C
Non-ferrous metals 50 - 70 °C
Current density Cathodic and anodic mode 10 A/dm2
Operation time Steel - cathodic mode 1 - 2 min.
Steel - anodic mode 30 s
Non-ferrous metals - cathodic mode 1 min.
Non-ferrous metals - anodic mode 15 s
Electrodes Stainless steel 17 241, 17 246
Work area/electrode area ratio 1 : 2

Pragolod 66
agent for anodic degreasing

Pragolod 66
agent for anodic degreasing

Strongly alkaline degreaser suitable for electrolytical cleaning of steel in the anodic cycle. just before the electroplating or other surface treatment processes which require the surface of highest cleanliness. The agent shows outstanding degreasing effect and, furthermore, may remove flash rust from the surface. The anodic mode of electrolytical degreasing may cause a microscopic surface roughening and activation which, consequently, will improve adhesion of the coatings to the substrate.

Running conditions of the bath

Anodic mode
Concentration recommended 8 – 10 %
Running bath temperature recommended 50 - 70 °C
Anodic current density 10 A/dm2
Operation time 30 - 60 s
Electrodes Stainless steel 17 241, 17 246
Work area/electrode area ratio 1 : 2

Pragolod 68 S
agent for anodic, cathodic and chemical degreasing

Pragolod 68 S
agent for anodic, cathodic and chemical degreasing

Strongly alkaline speciality degreaser either for immersion and ultrasonic-assisted cleaning of steel or for electrolytical degreasing of steel and non-ferrous metals in both cathodic as well as anodic mode. The agent contains very efficient and easy biodegradable both non-ionic and anionic surfactants.

Running conditions of the bath

Concentration recommended Chemical degreasing 1 - 6 %
Electrolytic degreasing 5 - 10 %
Running bath temperature recommended Steel 60 - 80 °C
Non-ferrous metals 50 - 70 °C
Current density Cathodic and anodic mode 10 A/dm2
Operation time Steel - cathodic mode 1 - 2 min.
Steel - anodic mode 30 s
Non-ferrous metals - cathodic mode 1 min.
Non-ferrous metals - anodic mode 20 s
Electrodes Stainless steel 17 241, 17 246

Pragolod 69 E
strongly alkaline degreaser for cathodic, anodic and chemical modes of degreasing

Pragolod 69 E
strongly alkaline degreaser for cathodic, anodic and chemical modes of degreasing

Basic component Pragolod 69 E may be used as a multi-purpose electrolytic degreaser in such cases where the bath must be free of any organic surfactants or other organic substances. Together with other additional surfactants Pragolod DT 69 E, Pragolod DT 57, Pragolod DT 54, Pragolod DT 55, Pragofos DT 1008 L and Pragolod 450 the final bath can be tailor-made modified for diverse purposes of immersion, spraying and ultrasonic-assisted ways of degreasing which enables to boost its performance for various types of the grease to be removed. The Pragolod 69E degreasing bath, complemented with a strengthening surfactant, is usually being employed as the first degreasing step which is followed by the electrolytic degreasing. As for the electrolytic one, the Pragolod 69E bath should be applied in cathodic, anodic as well as reversal mode.

Running conditions of the bath

Concentration recommended Chemical degreasing 1 - 6 %
Electrolytic degreasing 5 - 10 %
Running bath temperature recommended Steel 60 - 80 °C
Non-ferrous metals 50 - 70 °C
Current density Cathodic and anodic mode 10 A/dm2
Operation time Steel - cathodic mode 1 - 3 min.
Steel - anodic mode 0,5 - 2 min.
Non-ferrous metals - cathodic mode 0,5 - 2 min.
Non-ferrous metals - anodic mode 5 - 10 s
Electrodes Stainless steel 17 241, 17 246

Specialities and auxiliary agents for degreasing / Surfactants for strenghtening and refilling of the degreasing baths

Pragolod 450
surfactant additive into alkaline degreasing baths

Pragolod 450
surfactant additive into alkaline degreasing baths

A surfactant additive into alkaline degreasing baths of the Pragolod brand and into iron phosphates baths of the Pragofos brand as well. Owing to its low-emulsifying ability, the agent is suitable for immersion techniques of application and for the baths equipped with a grease separator and surface cleaning.

 

Pragolod DT 54
refilling surfactant additive

Pragolod DT 54
refilling surfactant additive

It is a refilling surfactant additive suitable for boosting of the overall degreasing effect and to increase the life of the baths being regenerated and applied by immersion. It should be dosed into the degreasing baths equipped with surface overspraying and overflow into an oil separator or, alternatively, into other separation unit. The surfactant additive Pragolod DT 54 is of a low-emulsifying feature and convenient for the baths being regenerated by micro or ultrafiltration techniques. It contains efficient both anionic and non-ionic surfactants of easy biodegradability, dispergators and other organic substances which are able to make the degreasing process of copper and its alloys more effective.

 

Pragolod DT 57
refilling low-foaming surfactant additive

Pragolod DT 57
refilling low-foaming surfactant additive

It is a refilling and low-foaming surfactant additive suitable for boosting of the overall degreasing effect and to increase the life of the baths of the Pragokor brand being regenerated and applied by both spraying and immersion. It should be dosed into the degreasing baths equipped with surface overspraying and overflow into an oil separator or, alternatively, into other separation unit. The surfactant additive Pragolod DT 57 is of a medium-emulsifying feature and convenient for the baths being regenerated by the microfiltration technique. It is predominantly appropriate for the baths of the Pragolod brand with suppressed foamability.

Pragolod DT NF
refilling low-foaming surfactant additive

Pragolod DT NF
refilling low-foaming surfactant additive

Pragolod DT NF is the concentrate of a liquid surfactant additive into the Pragolod alkaline degreasing baths. The agent is suitable to extend the life of the regenerated degreasing baths or to boost their degreasing performance, e.g. in the case of thicker oils or other hydrophobic layers to be removed from the work treated. It should be used for the refilling of the degreasing baths applied by spraying and regenerated both continually as well as periodically by the oil separation, e.g. through bath surface skimmers, bath surface overspraying or microfiltration. However, if the bath microfiltration is applied the bath foamability might be enhanced slightly.

Pragolod AC 300
solvent-based additive into degreasing baths

Pragolod AC 300
solvent-based additive into degreasing baths

Pragolod AC 300 is a liquid water-free agent capable to release and dissolve wide range of organic pollution of either polar or non-polar character from both metallic and plastic surfaces, such as lubricants, impregnation oils, vaselines, lubricants used at metallic-forming processes etc. It should be used as a concentrate for immersion or hand cleaning for both metallic as well as plastic surfaces.

Besides, Pragolod AC 300 is convenient to boost the activity of water-borne degreasers of neutral and medium alkaline degreasing baths usually replenished in the concentration 5 - 50% which will enhance the overall bath performance to remove e.g. vaselines and waxes otherwise hard to be dissolved.

 

Specialities and auxiliary agents for degreasing / Defoamers

Pragolod AF 50
defoaming additive of high performance

Pragolod AF 50
defoaming additive of high performance

A liquid of low viscosity suitable for a rapid foaming suppression of all types of the Pragolod brand degreasing baths or other baths for surface treatment processes. It is a mixture of both organic substances and non-ionic surfactants. It should be dosed into the degreasing baths either regularly as a part of the bath maintenance schedule or only occasionally if an acute need for foaming suppression instantly occurs, very often at operating of the fresh bath or due to accumulation of the foaming impurities on the bath surface.

 

Pragolod AF 54
quick-operating defoaming additive of very high performance

Pragolod AF 54
quick-operating defoaming additive of very high performance

Highly efficient and quick-operating defoaming additive for the foaming suppression of all types of the Pragolod brand alkaline degreasing baths. It may be applied in the degreasing processes regenerated by both micro and ultrafiltration as well. It should be dosed into the degreasing baths either regularly as a part of the bath maintenance schedule or only occasionally if an acute need for foaming suppression instantly occurs, very often at operating of the fresh bath or due to accumulation of the foaming impurities on the bath surface.

 

Specialities and auxiliary agents for degreasing / Surfactant additives to pickling baths

Pragolod AC 200
liquid agent to cut down undesired release of acid aerosols from the pickling baths with degreasing performance

Pragolod AC 200
liquid agent to cut down undesired release of acid aerosols from the pickling baths with degreasing performance

A liquid agent capable of cutting down undesired release of acid aerosols from the pickling baths. Owing to the surfactants content in the agent, it is of a very good degreasing performance and, together with pickling, there is a possibility of integration of two technological operations (pickling and degreasing) in one bath. It may operate in the pickling baths based on hydrochloric, sulphuric and phosphoric acids, the occupational environment in the pickling shops being improved substantially.

Pragolod AC 202
acid-based corrosion inhibitor for pickling of steel, cast iron and aluminium and its alloys

Pragolod AC 202
acid-based corrosion inhibitor for pickling of steel, cast iron and aluminium and its alloys

Pragolod AC 202 is a liquid pickling inhibitor of steel, cast iron and aluminium and its alloys. It is a blend of pickling inhibitors, non-ionic surfactants and complex-forming substances and should be especially used as an inhibition additive into non-oxidizing inorganic acids-based pickling baths made of hydrochloric, sulphuric or phosphoric acids or, alternatively, of organic acids and their mixtures. The agent is very efficient in the inhibition of ferrous surfaces and aluminium alloys and, to a lesser extent, of zinc and other metals. It strongly impedes the hydrogen embrittlement process of ferrous substrates and makes the surface treated more grained- refined. It should be used in the pickling acids, after prior degreasing process in alkaline, acid or surfactant-based agents, in particular before galvanizing, plating or painting. The inhibition efficiency of Pragolod AC 202, i.e. the reduction of the steel substrate dissolution in its baths, is by 90 – 99% depending on its concentration and composition of the treated steel or cast iron. To accomplish the combined degreasing effect in the inhibited acid pickling baths, the pickling surfactants Pragolod AC 200, Pragolod AC 205 or Pragolod 450 may be added.

 

Pragolod AC 205
liquid agent to cut down undesired release of acid aerosols from the pickling baths with very good degreasing performance

Pragolod AC 205
liquid agent to cut down undesired release of acid aerosols from the pickling baths with very good degreasing performance

A liquid agent capable of cutting down undesired release of acid aerosols from the pickling baths. Owing to the surfactants content in the agent, it is of a very good degreasing performance and, together with pickling, there is a possibility of integration of two technological operations (pickling and degreasing) in one bath. It shows a mild corrosion inhibition effect on both steel and copper alloys, brings down the possibility of hydrogen embrittlement of steel substrates and makes the surface pickled more uniform with a resulted finer finish. It may operate in the pickling baths based on hydrochloric, sulphuric and phosphoric acids, the occupational environment in the pickling shops being improved substantially.

 

Pragolod AC 225
liquid agent preventing a spontaneous decomposition of hydrogen peroxide

Pragolod AC 225
liquid agent preventing a spontaneous decomposition of hydrogen peroxide

A liquid agent which prevents a spontaneous decomposition of hydrogen peroxide in the baths for polishing of copper and its alloys. Pragolod AC 225 will cut down the release of fumes from the hydrogen peroxide-based pickling baths significantly and, that is why, improve the working hygiene in pickling shops and add to a cleaner environment as well. It should be employed as an additive to the pickling baths before painting, electroplating and other surface treatment operations.

Pragolod AC 226
liquid agent preventing a spontaneous decomposition of hydrogen peroxide in the baths for polishing of copper and its alloys

Pragolod AC 226
liquid agent preventing a spontaneous decomposition of hydrogen peroxide in the baths for polishing of copper and its alloys

A liquid agent which prevents a spontaneous decomposition of hydrogen peroxide in the baths for polishing of copper and its alloys. It contains increased concentration of efficient surfactants and stabilizing agents. It should be employed as an additive to the pickling and polishing baths on the basis of both sulphuric acid and hydrogen peroxide before painting, electroplating and other surface treatment operations. Pragolod AC 226 is capable to restrain release of fumes from the pickling baths with hydrogen peroxide substantially and, consequently, improves working hygiene and adds to a better environment in the pickling shops.

Pickling and degreasing agents

Pragolod 930
strong acid degreasing agent for cleaning of ferrous metals before galvanizing

Pragolod 930
strong acid degreasing agent for cleaning of ferrous metals before galvanizing

Pragolod 930 is a liquid strong acid cleaning agent suitable for degreasing of medium-greased ferrous metals before galvanizing and should be applied by immersion in the running bath diluted with water at ambient or enhanced bath temperature. To ensure the quality of the degreasing and thus equivalent replacement of the current alkaline process before galvanizing, the degreaser is a blend of concentrated inorganic acids (phosphoric and hydrochloric acids) together with non-ionic surfactants, corrosion inhibitors and solubilizators. The aim of the degreasing bath combined with a pickling affect is, however, not to remove all scales and rust from the surface treated but rather the substrate pretreatment convenient for subsequent pickling process in inhibited acids with surfactants contained, without the necessity of the intermediate rinse. As a result, the number of containers for the pre-treatment processes before galvanizing, overall consumption of rinse water as well as the demand for the waste water treatment process are being reduced significantly.

Running conditions of the bath

Way of application Concentration recommended Bath temperature (°C) Exposition (min.)
Immersion 3 - 5 % 15 - 35 10 - 20

 

Pragolod 940
acid pickling, deoxidizing and cleaning agent. Incrustation remover

Pragolod 940
acid pickling, deoxidizing and cleaning agent. Incrustation remover

Pragolod 940 is a solid, acid-based cleaning agent containing amidosulphuric acid suitable for dissolution and removal of mill scales, corrosion products and hydrolysis products left on the surface after alkaline degreasing or pickling in inorganic acids. Further possible use is for the surface activation of copper alloys, especially free-cutting and cast brass containing lead, and is able to dissolve and remove boiling incrustations while the basic metallic material remains intact by the agent. Both pickling adsorption corrosion inhibitors and non-ionic surfactants are contained in the agent. Ways of its application include immersion or ultrasonic-assisted immersion at temperature range 30 – 80°C, bath concentration 1 – 5% and operation times 1 – 60 minutes.

 

Pragolod 960
strongly acid agent for pickling of stainless steels and nickel-based alloys.

Pragolod 960
strongly acid agent for pickling of stainless steels and nickel-based alloys.

The agent is suitable for dissolution and removal of corrosion products and mill scales left on the metallic surface after the welding operations and, besides, is possible to make the surface treated uniform in appearance. Further use consists in cleaning and removal of the ferritic-based contaminants from the stainless steel surface, which otherwise might induce rust spots creation on it and mar its appearance badly.

In case of pickling with the agent, a preliminary degreasing in suitable degreasing baths (Pragolod 57 N, Pragolod 18 etc.) is demanded first.

The agent contains both surfactants and corrosion inhibitors durable against bath oxidative environment, which are able to reduce a high bath surface tension and prevent overpickling of the material treated.

 

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