The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 16, 1988
Filed:
Nov. 25, 1985
Jun Nakauchi, Tokyo, JP;
Shunsuke Minami, Kawasaki, JP;
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Abstract
This invention provides novel thermosetting preform having superior transparency which is composed of the resin produced by partially 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.degree. 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 resistance by heating and molding said preform.