Abstract: An aqueous fluororesin coating composition and a process for producing the same, the coating composition comprising a core/shell fluorine-containing copolymer dispersed in an aqueous medium, the core/shell fluorine-containing copolymer comprising a core comprising a fluorine-containing copolymer comprising a repeating unit derived from a fluoroolefin monomer and a repeating unit derived from a vinyl carboxylate monomer and having a glass transition point Tg of 40.degree. C. or more, and a shell comprising a fluorine-containing copolymer comprising a repeating unit derived from a fluoroolefin monomer and a repeating unit derived from a vinyl carboxylate monomer and having a glass transition point Tg of from -10 to 30.degree. C., the weight ratio of the core to the shell being from 20/1 to 1/2.

Abstract: The invention provides a coating composition prepared by dissolving a fluorine-type copolymer in an organic solvent, the copolymer comprising:i) about 50 to about 90 mole % of a structural unit represented by the formula a)--CH.sub.2 --CF.sub.2 --ii) about 5 to about 30 mole % of a structural unit represented by the formula b)--CF.sub.2 --CF.sub.2 --andiii) about 5 to about 30 mole % of a structural unit represented by the formula c)--CF.sub.

Abstract: The present invention provides a fluorinecontaining copolymer comprising at least one fluoroolefin and at least one cyclic unsaturated compound represented by the formulas (I) and (II) ##STR1## wherein each of n and m is 0 or a positive integer and preferably 0 or an integer of from 1 to 3, l is an integer of 3 or more than 3 and preferably 3 or 4, and R.sup.1 to R.sup.10 are the same or different and each represents a hydrogen atom, a halogen atom, a hydrocarbon group or a substituted hydrocarbon group and a method of preparing the same; and a fluorine-containing copolymer comprising at least one fluoroolefin, at least one cyclic unsaturated compound selected from the compounds of the above formulas (I) and (II) and at least one of mono and diolefins and a method of preparing the same.

Abstract: The present invention provides a carrier comprising a core and a coating for developing electrostatic images, the core being formed from a specific polymer composition.

Abstract: This invention provides a fluorine-containing copolymer comprising:(a) 50 to 85 mole % of a structural unit represented by the formula--CH.sub.2 --CF.sub.2--,(b) 5 to 40 mole % of a structural unit represented by the formula--CF.sub.

Abstract: The present invention provides a fluorine-containing copolymer comprising at least one fluoroolefin and at least one cyclic unsaturated compound represented by the formulas (I) and (II) ##STR1## wherein each of n and m is 0 or a positive integer and preferably 0 or an integer of from 1 to 3, l is an integer of 3 or more than 3 and preferably 3 or 4, and R.sup.1 to R.sup.10 are the same or different and each represents a hydrogen atom, a halogen atom, a hydrocarbon group or a substituted hydrocarbon group and a method of preparing the same; and a fluorine-containing copolymer comprising at least one fluoroolefin, at least one cyclic unsaturated compound selected from the compounds of the above formulas (I) and (II) and at least one of mono and diolefins and a method of preparing the same.

Abstract: This invention provides (i) novel hexafluoroneopentyl alcohol, (ii) its derivatives, i.e., hexafluoroneopentyl (meth)acrylate, (iii) fluorinated polymers comprising said acrylate as the monomer component, and (iv) optical materials comprising said fluorinated polymers.

Abstract: The invention provides: a fluorine-containing copolymer comprising methyl methacrylate and at least one long-chain fluoroalkyl methacrylate and having a light transmittance of about 90% or more; a method of preparing the copolymer; and an optical fiber using the copolymer as the cladding material.

Abstract: The present invention provides a carrier comprising a core and a coating for developing electrostatic images, the core being formed from a specific polymer composition.

Abstract: Disclosed are a carrier for developing electrostatic images, the carrier comprising a core and a coating on the core, the coating being formed from a copolymer comprising about 50 to about 90 mole % of vinylidene fluoride, about 5 to about 45 mole % of tetrafluoroethylene and about 1 to about 30 mole % of a fluorine-containing unsaturated polymerizable compound; and a carrier for developing electrostatic images, the carrier comprising a core and a coating on the core, the coating being formed from a copolymer comprising about 50 to about 90 mole % of vinylidene fluoride and about 50 to about 10 mole % of at least one fluorine-containing unsaturated polymerizable compound selected from the group consisting of trifluorochloroethylene, 1,1-dihydrohexafluoroisobutene, hexafluoropropylene, perfluoro(alkyl vinyl ether), trifluoroethylene and hexafluoroacetone.

Abstract: This invention provides: (1) a hard coating agent of low refractive index comprising an unsaturated double bond-containing ester compound having fluorine-containing organic group, an unsaturated double bond-containing compound having alkoxysilyl group and a photopolymerization initiator; and (2) a hard coating agent of low refractive index comprising a copolymer prepared by copolymerizing the unsaturated double bond-containing ester compound having fluorine-containing organic group and the unsaturated double bond-containing compound having alkoxysilyl group.

Abstract: This invention provides (i) novel hexafluoroneopentyl alcohol, (ii) its derivatives, i.e., hexafluoroneopentyl (meth)acrylate, (iii) fluorinated polymers comprising said acrylate as the monomer component, and (iv) optical materials comprising said fluorinated polymers.

Abstract: The invention provides an optical fiber comprising a cladding and a core wherein the cladding comprises a terpolymer comprising:(1) about 50 to about 90 mol. % of vinylidene fluoride,(2) about 8 to about 45 mol. % of trifluoroethylene and(3) about 2 to about 15 mol. % of hexafluoropropylene or perfluoro(alkylvinylether).

Abstract: Polymeric dielectrics, which comprise 60 to 79 % by mole of repeating units derived from vinylidene fluoride, 18 to 22 % by mole of repeating units derived from trifluoroethylene and 3 to 22 % by mole of repeating units derived from chlorotrifluoroethylene, have high dielectric constant.

Abstract: This provides an antifouling coating composition comprising a photopolymerization initiator or thermal polymerization initiator and a fluorine-containing (meth)acrylate represented by the formula (1) ##STR1## wherein X is hydrogen atom, fluorine atom, chlorine atom or methyl, Y is alkylene having 1 to 3 carbon atoms, a group --CH.sub.2 CH.sub.2 N(R)SO.sub.2 -- (wherein R is alkyl having 1 to 4 carbon atoms), a group --CH.sub.2 CH(OZ)CH.sub.2 -- (wherein Z is a hydrogen atom or acetyl) or a group ##STR2## and Rf is fluoroalkyl having 6 to 15 carbon atoms or fluoroalkyl having 5 to 21 carbon atoms and containing 1 to 5 oxygen atoms in the carbon ring provided that the oxygen atoms are not present adjacent to one another.

Abstract: This invention provides a carrier for developing electrostatic images comprising a core and a coating on the core, the coating being formed from a copolymer comprising a fluoroalkyl acrylate and a monomer copolymerizable therewith.

Abstract: This invention provides an antifouling finishing agent comprising a fluorine-containing polymer comprising at least 50% by weight of a fluorine-containing acrylate represented by the formula ##STR1## wherein Y is alkylene group having 1 to 3 carbon atoms, a group of the formula --CH.sub.2 CH.sub.2 N(R)SO.sub.2 -- (wherein R is alkyl group having 1 to 4 carbon atoms) or a group of the formula --CH.sub.2 CH(OZ)CH.sub.2 -- (wherein Z is hydrogen atom or acetyl group), and R.sub.f is fluoroalkyl group having 3 to 21 carbon atoms or fluoralkyl group having 3 to 21 carbon atoms and containing 1 to 10 oxygen atoms in the carbon chain (provided that no oxygen atom is adjacent or closest to other oxygen atom), said fluoroalkyl groups having at least 5 fluorine atoms.

Abstract: In an adhesive composition for biomaterial use, a composition characterized by comprising as a main component a compound represented by the formula ##STR1## wherein A is H, F or CH.sub.3, B is fluoralkyl group having 1 to 20 carbon atoms.

Abstract: The present invention provides a fluorine-containing water- and oil-repellent composition comprising a fluorine-containing acrylate represented by the formula: ##STR1## wherein X is a fluorine atom or --CFX.sup.1 X.sup.2 group (wherein X.sup.1 and X.sup.2 are the same or different and are each a hydrogen atom or fluorine atom), Y is alkylene having 1 to 3 carbon atoms, --CH.sub.2 CH.sub.2 N(R)SO.sub.2 -- group (wherein R is alkyl having 1 to 4 carbon atoms) or --CH.sub.2 CH(OZ)CH.sub.2 -- (wherein Z is a hydrogen atom or acetyl), and Rf is fluoroalkyl having 3 to 21 carbon atoms, or fluoroalkyl having 3 to 21 carbon atoms and 1 to 10 oxygen atoms in its carbon chain (wherein no two oxygen atoms are present adjacent to each other).

Abstract: The present invention provides a fluorine-containing water- and oil-repellent composition comprising a fluorine-containing acrylate represented by the formula: ##STR1## wherein X is a fluorine atom or --CFX.sup.1 X.sup.2 group (wherein X.sup.1 and X.sup.2 are the same or different and are each a hydrogen atom or fluorine atom), Y is alkylene having 1 to 3 carbon atoms, --CH.sub.2 CH.sub.2 N(R)SO.sub.2 -- group (wherein R is alkyl having 1 to 4 carbon atoms) or --CH.sub.2 CH(OZ)CH.sub.2 -- (wherein Z is a hydrogen atom or acetyl), and Rf is fluoroalkyl having 3 to 21 carbon atoms, or fluoroalkyl having 3 to 21 carbon atoms and 1 to 10 oxygen atoms in its carbon chain (wherein no two oxygen atoms are present adjacent to each other).