PHASE STABILIZED POLYESTER MOLDING MATERIAL

摘要

The present invention relates to the discovery and development of a novel class of phase stabilization additives for thermoset polyester resins. The use of these materials imparts improved glass read out and superior homogeneity when compared to art-disclosed systems thus producing an overall improved Class A quality thermoset polyester resin surface finish for a variety of products. The phase-stabilizing agents or additives of the present invention comprises a select group of compounds from three classes; fatty acids, dimer acids, and polyester polyols. More specifically, the phase-stabilizing agents of the present invention comprises a compound select from the group consisting of: (i) a saturated or unsaturated C5 to C28 fatty acid; (ii) a C20 to C54 dimer acid or timer acid; or (iii) a polyester polyol having an average molecular weight of 200 to about 6,500.