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US 4,588,781 AGranted
Fluorine-containing copolymer and composition containing the same
AssigneeDaikin Kogyo Co., Ltd.
InventorsAkira Ohmori, Nobuyuki Tomihashi, Yoshiki Shimizu
Life of this patent
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Abstract
A fluorine-containing copolymer comprising chlorotrifluoroethylene, 2,2,3,3-tetrafluoropropyl vinyl ether and 0 to 25% by mole of a vinyl ether having a functional group selected from the group consisting of hydroxyl, glycidyl and amino. The fluorine-containing copolymer has a good compatibility with methyl methacrylate polymers and gives, in combination with methyl methacrylate polymers, products such as coating film, self-supporting film and molded article, which have good stain resistance and transparency.
Claims3
A composition suitable for forming which comprises
- (1) a fluorine-containing copolymer comprising chlorotrifluoroethylene, 2,2,3,3-tetrafluoropropyl vinyl ether and a vinyl ether having a functional group selected from the group consisting of hydroxyl, glycidyl and amino, and
- (2) a methyl methacrylate polymer comprising predominantly methyl methacrylate,
- wherein the content of chlorotrifluoroethylene is from 40 to 60% by mole, the content of 2,2,3,3-tetrafluoropropyl vinyl ether is from 25 to 50% by mole, and the content of the vinyl ether having said functional group is from 0.5 to 25% by mole.
Dependencies are inferred from the claim text.