Patent ID: 6489377
Filing Date: 2002-12-03
Classification: C03C,C08F,C08K,C09D,C09K

Abstract:
Method for producing thermotropic casting resin systems that comprise at least one matrix polymer including at least one thermotropic monomer compound from the group of the alkanes of the general formula CnH2n+2 with n=10 to n=25, which monomer is immiscible with the matrix polymer, and the structure of which monomer cannot be affected by temperature changes, whereby the matrix polymer and the thermotropic compound are selected in such a way that their refraction indices are approximately equal in a temperature range that is below the temperature required for structural change of the monomer and up to the temperature of structural change of the thermotropic compound, and that the casting resin system is, therefore, translucent or transparent in this temperature range, characterized by:a) dissolving the thermotropic compound in the matrix solution, the matrix solution containing photohardening oligomers, reactive thinners as well as photoinitiators into a liquid, photohardening system, b) photoradiation of the liquid system under the exclusion of oxygen for hardening purposes.