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 fluoralkyl acrylate and a monomer copolymerizable therewith.

Abstract: A dental material comprising a copolymer which comprises at least 10% by weight of a polymeric unit of at least one of the following monomers: ##STR1## wherein R.sup.1 and R.sup.2 are each H, CH.sub.3 or CF.sub.3, R.sup.3 is H, CH.sub.3 or F, A is --CH.sub.2 --, --CH.sub.2 CH.sub.2 --, --CH.sub.2 CH(CH.sub.3)--, --CH(OH)--, --CH.sub.2 CH(OH)CH.sub.2 --, --CH(OCOCH.sub.3)--or --CH.sub.2 CH(OCOCH.sub.3 (CH.sub.2 --, A' is the same group as A or --CH.sub.2 CH.sub.2 CH.sub.2 --, 2 is an alkylene group having 2 to 10 carbon atoms, m and n are each zero or a number of 1 to 5, p is a number of 1 to 3, q is a number of 1 to 5, provided that at least one of R.sup.1 and R.sup.2 is CF.sub.3 when R.sup.3 is H or CH.sub.3.

Abstract: A resist material of positive type having a high sensitivity, a high resolving power and an excellent adhesion property to substrates, which comprises a copolymer of a fluoroalkyl acrylate having the general formula: ##STR1## wherein R.sub.1 is methyl group, ethyl group, a halogen-substituted methyl or ethyl group, a halogen atom or hydrogen atom, R.sub.2 is a bivalent hydrocarbon group having 1 to 6 carbon atoms, and R.sub.f is a fluoroalkyl group having 1 to 15 carbon atoms, with an acrylic comonomer selected from the group consisting of a glycidyl acrylate, an acrylic acid, an acrylamide and an .alpha.-cyanoacrylate.

Abstract: A fluorine-containing copolymer comprising structural units of the formula (a):--CH.sub.2 CF.sub.2 -- (a)structural units of the formula (b): ##STR1## wherein n is an integer of 1 to 10 and structural units of the formula (c):--CFX--CFY-- (c)wherein X is --H, --Cl or --F and Y is --F, a lower fluoroalkyl group or a group having the formula: ##STR2## in which m is 0 or an integer of 1 to 3 and a curable composition comprising the fluorine-containing copolymer and a curing agent. The fluorine-containing copolymer is compatible with acrylic resins and is excellent in transparency, and the composition can be employed as a room temperature curing paints material.

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

Abstract: A fluoro-resin coating composition curable at room temperature and capable of providing coatings having an improved transparency or gloss which can be maintained for a long term, as well as excellent weatherability, chemical and solvent resistances, stain resistance and adhesion to substrates, which comprises a fluorine-containing copolymer comprising vinylidene fluoride and a minor amount of a vinyl monomer having a functional group capable of causing crosslinking at room temperature in the presence of a curing agent having at least difunctionality, and an acrylic resin.

Abstract: A fluorooxyalkyl vinyl ether of the formula: ##STR1## wherein n is an integer of 0 to 5, which is homopolymerizable or copolymerizable with fluoroolefins and homo- or co-polymer thereof.

Abstract: A fluorine-containing olefin of the formula: CF.sub.2 .dbd.CF(CF.sub.2).sub.m (CH.sub.2).sub.n OH wherein m is 0 or an integer of 1 to 10 and n is an integer of 1 to 4, which is copolymerizable with various ethylenically unsaturated compounds and provide fluorine-containing copolymers useful as raw materials for room temperature curing paints, fluorine-containing rubbers and the like.

Abstract: A novel fluorine-containing copolymer having functional groups comprising structural units of 1,1-difluoroethylene and structural units of a monomeric compound of the formula: ##STR1## wherein X is --OH, ##STR2## or --COOH group, m is 0 or an integer of 1 to 10 and n is an integer of 1 to 4, which may futher contain structural units of at least one monomer selected from the group consisting of tetrafluoroethylene, chlorotrifluoroethylene, monofluoroethylene 1,1,2-trifluoroethylene, hexafluoropropene and a fluoroalkyl vinyl ether. The copolymer is curable at room temperature, and is useful as a material for fluorine-containing rubbers, molded articles and paints.

Abstract: A resist material of positive type having a high sensitivity, a high resolving power and an excellent adhesion property to substrates, which comprises a copolymer of a fluoroalkyl acrylate having the general formula: ##STR1## wherein R.sub.1 is methyl group, ethyl group, a halogen-substituted methyl or ethyl group, a halogen atom or hydrogen atom, R.sub.2 is a bivalent hydrocarbon group having 1 to 6 carbon atoms, and R.sub.f is a fluoroalkyl group having 1 to 15 carbon atoms, with an acrylic comonomer selected from the group consisting of a glycidyl acrylate, an acrylic acid, an acrylamide and an .alpha.-cyanoacrylate.