Evonik Degussa T1890E curing agent

Introductions Product Introduction

Properties

Applications Recommended Use
T1890/100 must be dispersed in an inert medium for storage, and the solvent must be PU grade (water content less than 0.05%), and the mixture must be stirred at high temperature for some time (if the stirring is not sufficient, it will cause molecular expansion or harden but it is not stable in storage).
T1890 and HDI-PI ideal combination
This product has a cycloaliphatic frame conformation and cis-trans isomer configuration, it is this structure that controls its crystallization and improves compatibility and solubility. In the composition, more than 60% of the 3-ring structure is formed by 3 IPDI molecules, and the rest is composed of 5 to 7. This product is not just another HDI-PI but a completely different chemical and it cannot be replaced by N-75 and N-3390. A combination of them will achieve better results. Users can continue to use their existing recipes. Just use this product to partially replace N-75 or N-3390, one thing to note: the amount of catalyst must be increased. The corrosion resistance of the product itself is equivalent to that of N-3390 and better than that of N-75. And it doesn't turn yellow at all. The product can also raise the critical temperature of the coating on glass by 5–10°C. And these mainly depend on its anti-corrosion stability. The application of acid corrosion resistance has also been continuously improved.

Package
200kg/barrel