Polyfluoroalkyl vinyl ethers take up aliphatic and aromatic carboxylic acids in the presence of 0.2-5 wt% of trifluoroacetic acid at 55-105degreesC to give fluorine-containing hemiacetals in 60-100% yields.
Fluorine-containing copolymer and composition containing the same
申请人:Daikin Kogyo Co., Ltd.
公开号:EP0121934A1
公开(公告)日:1984-10-17
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 group, glycidyl group and amino group. The fluorine-containing copolymer has a good compatibility with methyl methacrylate polymers and gives, in combination use with methyl methacrylate polymers, products such as coating film, self-supporting film and molded article, which have good stain resistance and transparency.
Vinylidene fluoride copolymer and composition containing the same
申请人:DAIKIN INDUSTRIES, LIMITED
公开号:EP0458290A2
公开(公告)日:1991-11-27
A vinylidene fluoride copolymer comprising 50 to 90 % by mole of units having the formula (I):
-CH₂-CF₂- (I)
1 to 30 % by mole of units having the formula (II):
1 to 30 % by mole of units having the formula (III):
1 to 30 % by mole of units having the formula (IV):
and a composition comprising the copolymer as the main component. Since the copolymer is excellent in solvent solubility, it can be dissolved in a widely used solvent for coatings and it is not required to treat the film at a high temperature after coating. Moreover, the obtained film is excellent in adhesion to a substrate, glossiness, weatherability, stain resistance and corrosion resistance.
Fluorine-containing copolymer and curable composition containing the same
申请人:DAIKIN INDUSTRIES, LIMITED
公开号:EP0483750A1
公开(公告)日:1992-05-06
A fluorine-containing copolymer comprising: 30 to 85 % by mole of structural units (a):
1 to 30 % by mole of structural units (b):
and 3 to 60 % by mole of structural units (c):
and a curable composition containing the same. The copolymer is excellent in compatibility with curing agents and the obtained film therefrom is excellent in appearance, gloss, durability, and the like.
The present invention relates to a fluorine-containing copolymer. This fluorine-containing copolymer includes (a) a first unit derived from &agr;-trifluoromethyl acrylic ester represented by the following general formula (1); and (b) a second unit derived from a vinyl monomer,
1
where R
1
is an organic group containing at least one fluorine atom.
本发明涉及一种含氟共聚物。这种含氟共聚物包括:(a) 由&agr;-三氟甲基丙烯酸酯衍生的第一单元,其代表通式如下(1);(b) 由乙烯基单体衍生的第二单元、
1
其中 R
1
是含有至少一个氟原子的有机基团。
Fluorine-containing copolymer and the curable composition containing the same