Japan Shin-Etsu Ultra High Polymer Silicone Resin KR-251
Details
Ultra-high molecular weight silicone resin
KR-251 is a methyl silicone resin with a very large molecular weight.
Features
Due to the very high molecular weight, the coating is less prone to cracking.
The coating can be formed as long as it is dry.
By heating or adding a catalyst, a tougher, tougher coating is formed.
General characteristics
| Item | KR-251 |
| Appearance | Colorless transparent liquid |
| Non-volatile content 105°CX3h % | 20 |
| Viscosity 25°C mm2/s | 18 |
| Specific gravity 25°C | 0.92 |
| Acid value | <2 |
| Solvent | Toluene |
Film characteristics
| clear coat | ||
| Curing condition | 25°CX1day | 150°CX30min |
| Film thickness (μm) | 8 | 8 |
| Pencil Hardness | HB |
F |