Thermosetting preform having superior transparency and...

Details Thermosetting preform having superior transparency and... Thermosetting preform having superior transparency and...

C - Chemistry, Metallurgy

08

F

402/257

C08F 220/32 (2006.01) C08F 220/04 (2006.01)

Patent

CA 1264893

ABSTRACT OF THE DISCLOSURE This invention provides novel thermosetting preform having superior transparency which is composed of the resin produced by pertially polymerizing the mixture of (A) 4 to 30 wt% of at least one vinyl monomer containing carboxyl group, (B) 4 to 96 wt% of at least one vinyl monomer containing glycidyl group, and (C) up to 92 wt% of at least one copolymerizable monomer, said preform being characterized in that the amount of unreacted monomer remaining therein is less than 20 wt% and the glass transition temperature range is 120°C or lower. This invention also provides a method of production of a highly transparent molded article with high productivity which is superior in heat resistance and in chemical restance by heating and molding said preform.

496025

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