Liquid composition polymerizable to yield organic glasses...

Details Liquid composition polymerizable to yield organic glasses... Liquid composition polymerizable to yield organic glasses...

C - Chemistry, Metallurgy

08

F

402/175

C08F 218/00 (2006.01) G02B 1/04 (2006.01)

Patent

CA 1303779

C A S E 2669 "LIQUID COMPOSITION POLYMERIZABLE TO YIELD ORGANIC GLASSES ENDOWED WITH HIGH THERMAL STABILITY" Abstract A liquid composition polymizable by the free-radical polymerization route, with a low shrinkage, to yield organic glasses endowed with high thermal stability, is constituted by the product of transesterification of diallyl-carbonate (A) with a mixture of diol (B) and of a polyol (C) containing from 3 to 6 hydroxy groups in the molecule, or a mixture of a diol (B) with a cycloaliphatic diol (C'), by operating with a molar ratio of A/(B+C) or A/(B+C') equal to, or larger than, 3/1, and with an amount of (C) in the (B+C) mixture equal to, or smaller than, 70% by weight, or with an amount of (C') in the (B +C') mixture equal to, or smaller than, 90% by weight.

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