Organic glass with improved impact strength and with a...

Details Organic glass with improved impact strength and with a... Organic glass with improved impact strength and with a...

C - Chemistry, Metallurgy

08

F

C08F 118/00 (2006.01) C08F 218/00 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2064140

ES 4184 ORGANIC GLASS WITH IMPROVED IMPACT STRENGTH AND WITH A REFRACTIVE INDEX EQUAL OR SIMILAR TO THAT OF MINERAL GLASS. Abstract An organic glass with improved impact strength and with a refractive index equal or similar to that of mineral glass (crown glass), is composed of the product of the radicalic polymerization of the polymerizable liquid composition obtained by the transesterification of: (A) diallyl carbonate with a mixture of polyols: (B) bis(2-hydroxyethylether) of bisphenol-A, (C) diethylene glycol, and (D) tris(hydroxyethyl) isocyanurate, where for every 100 parts b.w. of the sum of polyols (B), (C) and (D), polyol (B) is present in a quantity of from 20 to 60% b.w., polyol (C) is present in a quantity of from 20 to 60% b.w. and polyol (D) is present in a quantity of from 10 to 40% b.w.; and where the molar ratio between the diallyl carbonate and the sum of polyols (A)/(B)+(C)+(D) is equal to or higher than 3/1.

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