TTA27: 1,2:5,6-Diepoxyhexahydro-4,7-methanoindan Cas 81-21-0
TTA27 (dicyclopentadiene epoxide) is a typical cycloaliphatic epoxy resin. Its molecular structure is characterized by a close bicyclic structure between two epoxy groups and a stable methylene bridge across the six-membered ring. Therefore, the cured product of TTA27 has the characteristics of high crosslinking density, strong rigidity, high heat resistance, strong weather resistance, UV resistance, and self-extinguishing in case of fire. It is especially suitable for outdoor using and radiation conditions.
Coating
The product containing a partial epoxy group can be prepared by condensation TTA27 with unsaturated fatty acids (such as dehydrated ricinoleic acid, linseed oleic acid, soybean oleic acid, tung oil acid, etc.), and then cure it under the action of catalysts BF3 and SnCl4. The obtained coating has excellent UV resistance and alkali corrosion resistance, as well as good hardness and toughness.
In addition, a dicyclopentadiene dioxide epoxy resin/polyurethane interpenetrating polymer network can be prepared by modifying TTA27 with polyurethane. The formation of an interpenetrating polymer network improves the bending strength, adhesion, and impact resistance of TTA27 resin. The addition of the curing agent improves the heat resistance of the polyurethane / epoxy resin interpenetrating network. The toughened epoxy resin shows an obvious two-phase structure than that before modification. The coating made of this system can be used for heat-resistant and wear-resistant automotive primers, etc.
