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:
Dec. 26, 2000
Filed:
Jun. 11, 1997
Kazuhiko Maeda, Tokyo, JP;
Yukio Ikeda, Saitama, JP;
Kentaro Tsutsumi, Saitama, JP;
Seiji Hasegawa, Saitama, JP;
Central Glass Company, Limited, Ube, JP;
Abstract
The invention relates to a fluorine-containing resin (graft copolymer) used for preparing a paint. This resin is prepared by a graft copolymerization of a fluorine-containing copolymer with a first monomer composition. The fluorine-containing copolymer comprises a first constitutional unit derived from a fluoroolefin and at least one of second and third constitutional units. The second constitutional unit is derived from a particular carboxylic acid vinyl ester represented by a general formula of R--C(.dbd.O)OCH.dbd.CH.sub.2 where R is a special group. The third constitutional unit is derived from a first monomer which is at least one compound selected from vinyl ethers and allyl ethers. The first monomer is represented by a general formula of R--O--(CH.sub.2)n--CH.dbd.CH.sub.2. The first monomer composition for preparing the resin contains a second monomer which is at least one compound selected from methacrylic acid esters and acrylic esters. The second monomer is represented by a general formula of CH.sub.2 .dbd.C(--R')C(.dbd.O)O--R where R' is hydrogen atom or methyl group. A composition prepared by mixing the resin with vinylidene fluoride resin or with a combination of vinylidene fluoride resin and acrylic resin is capable of providing a coated film having high gloss, high weather resistance, and good results in bending test for a long time. Another composition prepared by mixing the resin with a hardener is capable of providing a coated film having high hardness, good adhesion to various other coated films, high weather resistance, and high stain resistance.