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Heat-Resistant Varnishes

Varnish КО-075

Description

Light-yellow to dark-brown transparent liquid, a solution of polyester-modified polymethylphenylsiloxane resin in toluene.

The lacquer has good oil resistance.
 

Safety information

 The polymerized lacquer film is nontoxic, fire-proof.

Applications

  • Preparation of the heat-resistant enamel KO-835. The latter is prepared directly before use by mixing 94 parts by weight of the lacquer and 6 parts by weight of aluminium powder. The enamel is designed for parts operating at temperature of about 500°C.
  • Protection of separators, gas traps with the fitting, cyclone settlers in oil-fields.
  • Corrosion prevention of external surface of gas ducts, chlorinators, steam and gas turbines, ejectors, different elements of agricultural machines, air drying apparatus, chemical catching equipment, equipment in by-product coke production.
  • Protection of car radiators as well as other elements and equipment operating at 350-400°C for a long time.
  • Corrosion prevention of internal surface of steam-water tanks operating at 150-160°C. Sizing and dressing of artificial fur; improvement of resistance of protective clothing to attack by acids; impregnation of filter fabrics to increase serviceability, heat and wear resistance.
  • Release coating in the production of glass and fiberglass plastics; a component of parting paints.
  • Combination of the lacquer KO-075 with pentaphthalic (perchlorovinyl) nitrocellulose enamels provides improvement of the film strength, water, heat and light resistance, water repellency, gloss and hardness.

Shelf life

Shelf life 12 months

Physico-chemical properties
Fraction of total mass of nonvolatiles, %37 ± 3
Acid number, mg KOH/g of lacquermax. 6,0

Varnish КО-815

Description

Light-yellow to brown transparent liquid, solution of glyptal-modified polyphenylsiloxane resin in toluene or xylene.

Safety information

 In a cured state, the lacquer film is nontoxic, fire-proof.

Applications

  • Manufacture of heat-resistant enamels. The latter are made by mixing the lacquers with aluminum powder.
  • Enamels are designed for hardware which operates at 400-500°C for a long time.

Shelf life

Shelf life 36 months

Physico-chemical properties
Viscosity determined with viscometer type VZ-246 at orifice diameter 4 mm, s10 - 13
Fraction of total mass of nonvolatiles, %33 - 37
Acid number, mg KOH/g of lacquermax. 10,0
Dryout time 3rd degree, (150±2)°C, hrsmax. 1

Varnish КО-85FМ

Description

Toluene solution of polyphenyldimethylsiloxane resin modified with polybutyl methacrylate solution in mixture of acetone, ethyl acetate and butyl acetate, or xylene.

Safety information

The polymerized lacquer film is nontoxic, fire-proof.

Applications

  • Painting of woodwork (without polishing).
  • Manufacture of heat-resistant enamel which presents a mixture of the lacquer and aluminium powder as 100:5.
  • Due to the high resistance to heat, humidity and gasoline the enamel can be used for hardware operating at 300-3500C for a long time as exhaust pipes and ejectors of crawlers, parts of boilers, chimneys and wire ends as well as for restoration of damaged lacquer coatings.

Shelf life

Shelf life 12 months

Physico-chemical properties
Viscosity, s12 - 17
Fraction of total mass of nonvolatiles, %15 - 17
Acid number, mg KOH/g of lacquermax. 1,0
Dryout time 3rd degree, minsmax. 120