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Silicone resins

Silicone resins are composed of highly branched 3-dimensional polymers. They form coatings with outstanding heat resistance, weather resistance, electrical insulative properties, and water repellency. They generally dissolve in organic solvents, and are used in diverse applications to improve durability, safety, and reliability.

Features
Heat resistance
  Siloxane bonds (Si-O-Si) form the backbone of the molecular structures of silicone resins. Siloxane bonds have high bonding energy and the temperature of thermal decomposition is high, so these resins have excellent heat resistance. There is typically no decomposition, degradation, or discoloration even in high-temperature conditions of 250°C or more.
Electrical insulative properties
  Silicone resins exhibit excellent electrical properties over a wide temperature range. In particular, even at high temperatures there is little decline in electrical insulative properties, and good resistance to arcing.
Weather resistance
  They exhibit outstanding weather resistance, with little degradation caused by UV rays or other elements. Coatings exhibit little yellowing, chalking, or loss of gloss, and they maintain stable coating properties over long periods.
Water repellency
  Due to the orientation of the methyl groups in the molecules, the surface of the cured material has excellent water repellency.
High hardness
  Silicone resins are highly branched 3-dimensional polymers, and the backbone structure of the cured material is similar to that of glass, so these materials can be used to modify surfaces to make them inorganic substances.
Products
Category

Type / Applications

Grade

Features

For
paints

Straight silicone resin

KR-282

Good balance between drying properties and film characteristics.

KR-311

Forms relatively hard films. Good drying properties.

Silicone resin for modification

KR-211

Best miscibility with other organic resin.

KR-216

Forms the hardest films.

KR-213

Ideal for cooking with polyesters, alkyds, epoxies, etc.

KR-9218

Silicone alkyd resin

KR-5206

For room-temperature drying.

Silicone epoxy resin

ES-1001N

Typical silicone epoxy resin.

ES-1002T

Curing agent for eoxy can also be used.

ES-1023

Flexible with good adhesion and shelf-life.

Silicone polyester resin

KR-5230

Flexibility. High gloss.

KR-5235

Silicone coating agent

KR-400

High hardness. Non-solvent coating agent.

KR-401

Medium hardness. Non-solvent coating agent.

For
electricity

For surface damp-proofing

KR-251

Forms the thinnest, hard, transparent films of all varnishes used for moisture-proofing of surfaces.

KR-255

Typical varnish for moisture-proofing.

KR-114A

Soft, waxy film whch absorbs strain. Film can be removed with a solvent.

KR-112

Forms soft, solvent-resistant films.

For laminates

KR-2610B

Heat resistant, and molded items will have good mechanical strength.

For mica

KR-242A

Flame-resistant and low smoking.

For coil immersion

KR-285

Low foaming during curing, and suitable for impregnation of large equpment.

For sleeve and cloth processing

KR-2706

The most flexible of all varnishes for sleeves. Good heat resistance.

KR-165

Typical varnish for sleeves. Self-extinguishing. Good transparency.

KR-166

Self-extinguishing. Excellent film strength.

KR-169

Self-extinguishing. Good flexibility and heat resistance.

KR-2038

Non-solvent type. Self-extinguishing. Good heat resistance.

For resistor coating

KR-221

Crack resistant.

KR-240

Fast curing. Particularly good resistance to solvents.

KR-220L

Solid type. Flame-resistant and low smoking.
 
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