Abstract: An adhesive composition comprising a photopolymerization initiator or curing agent and the compound represented by the formula (I) ##STR1## wherein M is a divalent organic group comprising at least one substituted or unsubstituted alicyclic hydrocarbon group or a divalent organic group comprising at least two substituted or unsubstituted aromatic hydrocarbon groups, the alicyclic hydrocarbon group or aromatic hydrocarbon group may be linked by O, S or CH.sub.2 or may form a condensed ring, n is zero or a positive number.

Abstract: Fluorine-containing alicyclic or aromatic cyclic compounds represented by the formula ##STR1## wherein M is a divalent organic group comprising at least one substituted or unsubstituted alicyclic hydrocarbon group or a divalent organic group comprising at least two substituted or unsubstituted aromatic hydrocarbon group, the alicyclic hydrocarbon group or aromatic hydrocarbon group may be linked by O, S or CH.sub.2, or may form a condensed ring, X is ##STR2## Y is H or CH.sub.3, n is zero or a positive number, are useful as an effective component of the adhesive composition.

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: 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).

Abstract: An .alpha.-fluoroacrylic acid polymer and a pervaporation membrane made of the polymer, the polymer comprising:(1) about 5 to about 100% by weight of a structural unit represented by the formula ##STR1## wherein X.sup.1 is (i) carboxyl group optionally converted to alkali metal salt, calcium salt, magnesium salt, zinc salt, iron salt, nickel salt, mercury salt, copper salt, cadmium salt, ammonium salt or C.sub.1 -C.sub.20 alkyl group-containing primary or tertiary amine salt, or (ii) a group --CONR.sup.4 R.sup.5 (wherein R.sup.4 is hydrogen or C.sub.1 -C.sub.20 alkyl group and R.sup.5 is hydrogen, C.sub.1 -C.sub.20 hydroxyalkyl group, C.sub.1 -C.sub.20 alkyl group containing sulfone group or carboxyl group both optionally converted to alkali metal salt, or a group --R.sup.7 NHR.sup.8.HY.sup.2 [wherein R.sup.7 is C.sub.1 -C.sub.5 alkylene group, R.sup.8 is C.sub.1 -C.sub.20 alkyl group optionally containing hydroxyl group and Y.sup.

Abstract: An .alpha.-fluoroacrylic acid polymer and a pervaporation membrane made of the polymer, the polymer comprising:(1) about 5 to about 100% by weight of a structural unit represented by the formula ##STR1## wherein X.sup.1 is (i) carboxyl group optionally converted to alkali metal salt, calcium salt, magnesium salt, zinc salt, iron salt, nickel salt, mercury salt, copper salt, cadmium salt, ammonium salt or C.sub.1 -C.sub.20 alkyl group-containing primary or tertiary amine salt, or (ii) a group --CONR.sup.4 R.sup.5 (wherein R.sup.4 is hydrogen or C.sub.1 -C.sub.20 alkyl group and R.sup.5 is hydrogen, C.sub.1 -C.sub.20 hydroxyalkyl group, C.sub.1 -C.sub.20 alkyl group containing sulfone group or carboxyl group both optionally converted to alkali metal salt, or a group --R.sup.7 NHR.sup.8 .multidot.HY.sup.2 [wherein R.sup.7 is C.sub.1 -C.sub.5 alkylene group, R.sup.8 is C.sub.1 -C.sub.20 alkyl group optionally containing hydroxyl group and Y.sup.

Abstract: Disclosed are a gas separating membrane prepared from a polymer from a monomer represented by the formula (1): ##STR1## wherein X is chlorine atom or fluorine atom, Y is hydrogen atom or methyl group, and m is 0 or an integer of 1 to 5, and a gas separating membrane prepared from a polymer of the monomer of the formula (1) in an amount of up to 100% by weight and other ethylenically unsaturated monomer in an amount of not more than 50% by weight, based on the combined weight of the monomer of the formula (1) and the other ethylenically unsaturated monomer.

Abstract: Disclosed are an acryloxyorganosiloxane polymer having a structural unit represented by the formula (1): ##STR1## wherein X.sup.1 is chlorine atom or fluorine atom, X.sup.2 and X.sup.3 are the same or different and each represent hydrogen atom or a group --CH.sub.2 (CF.sub.2).sub.p CF.sub.3 (wherein p is 0 or an integer of 1 to 5), Y is oxygen atom or --NH-- group, m is 0 or an integer of 1 to 5 and n is 0 or an integer of 1 to 5; an acryloxyorganosiloxane polymer further having a structural unit represented by the following formula (2) in an amount of not more than 50% by weight based on the combined weight of the structural unit of the formula (1) and the structural unit of the formula (2): ##STR2## wherein X.sup.

Abstract: This invention provides a cladding material in an optical fiber which comprises a polymer comprising:(1) a structural unit represented by the formula ##STR1## and (2) at least one of structural unit(i) ##STR2## and (ii) ##STR3##

Abstract: This invention provides a cladding material for an optical fiber, said cladding material having a structural unit represented by the formula ##STR1## wherein R.sup.1 represents chain hydrocarbon group having 1 to 5 carbon atoms or cyclic hydrocarbon group having 3 to 6 carbon atoms and optionally substituted with lower alkyl group having 1 to 6 carbon atoms.

Abstract: A transparent coating material comprises a polymer which contains at least 50 wt. % of a structural unit represented by the formula ##STR1## wherein X is fluorine or alkyl having 1 to 6 carbon atoms, and R.sup.1 is fluoroalkyl.

Abstract: The contact lenses of the present invention are formed of copolymers with monomers having hydroxyl groups and fluoroalkyl groups as their components. This invention makes it possible to provide contact lenses which are excellent not only in oxygen permeability, wettability and hardness, but also in contamination resistance to protein, lipids, etc., and transparency, etc.

Abstract: This invention provides a material for contact lenses comprising a polymer having 10 to 100 5 by weight of a structural unit represented by the formula ##STR1## wherein R is (CH.sub.2).sub.l R.sup.1 or --CH.sub.2).sub.m (CF.sub.2).sub.n CFZ.sup.1 Z.sup.2 in which R.sup.1 is oxygen-containing fluoroalkyl, Z.sup.1 and Z.sup.2 are the same or different and each hydrogen, fluorine or fluoroalkyl, l is an integer of 1 to 5, m is an integer of 1 to 4 and n is 0 or an integer of 1 to 10, 0 to 60% by weight of a structural unit represented by the formula ##STR2## wherein R.sup.2 is lower alkyl, and 0 to 80% by weight of a structural unit represented by the formula ##STR3## wherein X is hydroxyl or carboxyl and p is an integer of 1 to 5.

Abstract: The optical material of the present invention comprises a polymer which contains at least 70% by weight of a structural unit represented by the formula ##STR1## wherein X.sup.1 and X.sup.2 are the same or different and are each hydrogen or fluorine, and R is hydrogen, alkyl having 1 to 6 carbon atoms or fluoroalkyl having 1 to 6 carbon atoms.

Abstract: This invention provides a material for gas separating membrane comprising a fluorine-containing acrylate or methacrylate polymer or a crosslinked compound of the polymer.

Abstract: This invention provides a polymer of .alpha.-fluoroacrylate derivative having a structural unit represented by the formula ##STR1## wherein X is fluorine or fluoroalkyl having 1 to 3 carbon atoms, m is an integer of 1 to 3 and n is an integer of 0 to 5.

Abstract: A polymer comprising fluorooxyalkyl vinyl ether of the formula: ##STR1## wherein n is an integer of 0 to 5.

Abstract: A fluorine-containing copolymer comprising structural units of the formula (a):--CH.sub.2 --CHF-- (a)structural units of the formula (b): ##STR1## and structural units of the formula (c): ##STR2## wherein X is --H or --F, Y is --OH, --COOH or ##STR3## l is 0 or an integar of 1, m is 0 or an integar of 1 to 6 and n is 0 or an integer of 1 to 4, provided that Y is --COOH when n is 0. The copolymer has a good solubility to solvent and is cross-linkable, and the composition containing the copolymer can be cured at room temperature, and provides a film having an excellent chemical resistance, weatherability, stain resistance, heat resistance and high frictional electrification property.

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 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.The fluorine-containing copolymer is preferably an alternating copolymer comprising chlorotrifluoroethylene and 2,2,3,3-tetrafluoropropyl vinyl ether.