| abstract |
A shaped polymeric article of a gel-polymerisate of a homogeneous mixture comprising A. FROM 5% TO 95% BY WEIGHT OF POLYURETHANE PRECURSORS COMPRISING AT LEAST ONE POLYFUNCTIONAL COMPOUND AND AT LEAST ONE POLYISOCYANATE OF THE STRUCTURE <IMAGE> I where X is a divalent radical, preferably -CH2-, said precursors being capable of forming a cross-linked polyurethane having a glass-rubber transition temperature of at least 25 DEG C, preferably at least 35 DEG C, and B. FROM 95% TO 5% BY WEIGHT OF CURED POLYESTER RESIN PRECURSORS, COMPRISING I. AT LEAST ONE ETHYLENICALLY UNSATURATED POLYESTER, AND II. AT LEAST ONE VINYL MONOMER. |