Heat-resistant resins

Silicone organic heat-resistant resins

Silicone heat-resistant resin for high temperature materials and surfaces protection, dameged paintwork restoration, decorative treatment and hydrofobization.

Heat-resistant silicone resin KO-049

Product description

Heat-resistant silicone resin KO-049


Heat-resistant silicone resin KO-049 is a solution of polymethylphenylsiloxane resin in xylene or toluene.


KO-049 silicone resin is a binder for the heat-resistant cold-drying enamels production (for example, KO-822 enamel, KO-828 enamel) to protect equipment and parts that operates for a long time at temperatures up to +300°С - +400°С.

Examples of the enamels application produced using silicone resin KO-049:

Enamel KO-822 is designed for painting (without pre-priming) parts made of steel, titanium, aluminum alloys heated during processing. The heat resistance of the coating is up to +300°С. Coating enamel KO-822 can withstand the effects of gasoline, kerosene, synthetic oils.

Enamel KO-828 (silver colored, aluminum pigment contained) is intended for painting (without pre-priming) parts made of steel with phosphated and non-phosphated surfaces, which are heated during processing, for painting automobile silencers also. The heat resistance of the coating is up to +400°С. The enamel coating KO-828 is resistant to the alternating effects of heating and water, to the effects of salt fog and has a high resistance to water. 


  • Combines a good heat resistance and resistance to atmospheric conditions.
  • Good compatibility with organic resins and enamel components.
  • Resin film has good resistance to gasoline.
  • The polymerized film is non-toxic, fireproof.

Methods of application

Surface preparation: remove dust, dirt, iron oxide, rust, grease and other contamination (metal surface should be cleaned at least to grade St3 or Sa 21/2, in accordance with the International Standard ISO 8501), de-dust and degrease with organic solvents.

Application of enamel KO-822:

Apply 2-3 layers of the enamel by air or airless spraying. Dry each layer at a temperature +18°C - +23°C for 2 hours. Apply next layer after previous is completely dried. After 2 hours since the last layer laid on, dry additionally at a temperature +200°C - +250°C within 2 hours (drying at temperature +18°C - +23°C is permissible too, but in this case the enamel coating will be not resistant to gasoline, kerosene, synthetic oils). Recommended thickness of each layer is 12-15 microns at total thickness of the whole coating not exceeding 50 microns.

Application of enamel KO-828:

Enamel is applied in 2 layers by air spraying or spraying in an electrostatic field. Dry each layer at a temperature +18°C - +23°C for 2 hours. Apply next layer after previous is completely dried. After 2 hours since the last layer laid on, dry the coating additionally at a temperature +130°C within 30 minutes. Recommended thickness of coating is 22-28 microns. The temperature of the ambient air, enamel and surface during application should be not more than +35°C, the relative humidity of the air max. 80%, but at least 3°C higher, than the dew point of the air.


Store in a sealed container at a temperature from -30°С to +35°С. Store in a cool, dry, well-ventilated place, away from heaters, protected from moisture and direct sunlight.

The guaranteed shelf life in original container is 6 months.

Storage over the date specified on the label does not necessarily mean the product is unusable. In case if store more please check the properties of product before use.


  • Steel barrels up to 200 liters. 

Safety information

The product is flammable; please follow fire safety instructions during work. The polymerized varnish film is nontoxic, fire-proof.

Detailed instructions are given in the relevant product safety data sheet. It can be provided upon request.

  • Silkor Ltd. is a wholesale supplier and manufacturer of silicone organic resins.

    To get a special offer or to buy a heat-resistant silicone resin, find out the current price in Ukraine or your domestic market, please, use any easy contact way:

Physical and chemical properties

Parameter name and measure unitStandard
Appearance Transparent liquid from yellow to brown without visible mechanical impurities.
Mass content of solids, %51-55

Relative viscosity at a temperature (+20±2)°С  by viscometer VZ-246 (or VZ-4), nozzle diameter 4 mm, s

Acid number, mg КОН/g of resin, max1,0
Density at +20°C, g/cm31,02
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