Liquid composition polymerizable to yield organic glasses endowed with high thermal stability
申请人:ENICHEM SYNTHESIS S.p.A.
公开号:EP0302537A1
公开(公告)日:1989-02-08
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.
一种可通过自由基聚合途径聚合的液体组合物,具有低收缩性,可生成具有高热稳定性的有机玻璃,由碳酸二烯丙酯(A)与二元醇(B)和分子中含有 3 至 6 个羟基的多元醇(C)的混合物进行酯交换反应的产物构成、或二元醇(B)与环脂族二元醇(C′)的混合物,操作时 A/(B+C)或 A/(B+C′)的摩尔比等于或大于 3/1、(B+C)混合物中(C)的含量等于或小于70%(重量),或(B+C′)混合物中(C′)的含量等于或小于90%(重量)。