The present invention provides a fluoropolymer having excellent mechanical strength and transparency, having a high glass transition point suitable for high-temperature use, and having a high refractive index.
The present invention provides a novel compound represented by the following formula (1) and a fluoropolymer comprising monomer unit (2) formed by the polymerization of such a compound. RAF, RBF, RCF, RDF: each independently is a fluorine atom, a chlorine atom, a perfluoro monovalent saturated hydrocarbon group or a perfluoro(partially chlorinated monovalent saturated hydrocarbon) group, provided that at least one of RAF, RBF, RCF and RDF is a perfluoro(partially chlorinated monovalent saturated hydrocarbon) group.
Fluorine-containing diene, its production method and its polymer
申请人:Asahi Glass Company, Limited
公开号:US20010047115A1
公开(公告)日:2001-11-29
A fluorine-containing diene represented by the formula 1:
CF
2
═CF(CF
2
)
n
CXYOCF═CF
2
Formula 1
wherein each of X and Y which are independent of each other, is an atom selected from a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom and an iodine atom, provided that X and Y are not simultaneously hydrogen atoms or fluorine atoms, and n is an integer of from 1 to 3.
Method for production of fluorine-containing aromatic derivative
申请人:NIPPON OIL AND FATS COMPANY, LIMITED
公开号:EP0155093A2
公开(公告)日:1985-09-18
A fluorine-containing aromatic derivative useful as an intermediate for the synthesis of medicines, agricultural pesticides, and water-repellent oil-repellent agents is produced by a method characterized by causing a di(haloacyl)-peroxide of the general formula:
wherein X denotes a fluorine, chlorine, or hydrogen atom and n denotes an integer of the value of 1 to 10, to react with benzene, a mono-substituted benzene, naphthalene, or a mono-substituted naphthalene thereby introducing an X(CF2)n-group into the benzene ring or the naphthalene ring.
PERFLUOROALKYLATED NAPHTHALOCYANINE DERIVATIVE, PRODUCTION THEREOF, AND OPTICAL RECORDING MEDIUM
申请人:NIPPON OIL AND FATS COMPANY, LIMITED
公开号:EP0491951A1
公开(公告)日:1992-07-01
A perfluoroalkylated naphthalocyanine derivative which is excellent in weathering resistance and very highly soluble in various solvents and has a specified structure adapted for film formation; and an optical recording medium produced therefrom which enables recording by means of focused beams of a semiconductor laser. The above derivative is produced by the reaction of a perfluoroalkanoyl peroxide having a specified structure with a naphthalocyanine.
PROCESS FOR PRODUCING TETRAFLUOROETHYLENE/HEXAFLUOROPROPYLENE COPOLYMER
申请人:DAIKIN INDUSTRIES, LIMITED
公开号:EP0606492A1
公开(公告)日:1994-07-20
A process for producing a tetrafluoroethylene/hexafluoropropylene copolymer by copolymerizing tetrafluoroethylene with hexafluoropropylene in an aqueous medium using di(fluoroacyl) peroxide as the polymerization initiator, wherein a fluoroalkylcarboxylic acid is fed to the reaction system. The obtained copolymer has a stabilized molecular weight and the polymerization initiator can be utilized more efficiently.