Abstract: A resin reflective film, which containing two or more kinds of regions having different refractive indexes from each other, in which a film thickness of the resin film 20 to 5,000 µm, and a total reflectance is 60% or more and a diffuse reflectance is 60% or more for deep ultraviolet rays having a wavelength of 220 to 300 nm.

Abstract: A method for producing a fluoropolymer dispersion where a fine particle containing a fluoropolymer is dispersed in an aqueous dispersion medium, the fluoropolymer having a sulfonic acid group, and the method including a polymerization reaction step of emulsion polymerizing a fluorovinyl ether derivative and a fluorine-containing ethylenic monomer to give a fluoropolymer precursor, a hydrolysis step of hydrolyzing, in an aqueous medium, —SO2X1, where X1 represents a halogen atom, which the fluoropolymer precursor has thereby to give the fluoropolymer, the fluorovinyl ether derivative being represented by the following general formula (II): CF2?CF—O—(CF2CFY1—O)n—(CFY2)m-A1??(II) wherein Y1, n, Y1, m and A1 are as defined herein, the fluoropolymer precursor having a fluorovinyl ether derivative unit content of 5 to 40 mole percent, and the fluoropolymer dispersion being produced without drying the fluoropolymer precursor and the fluoropolymer.

Abstract: An electrode film for a polymer actuator element contains a fluororesin, a fluorine rubber, an ionic liquid, and a conductive filler.

Abstract: An electrode film for a polymer actuator element contains a fluororesin, a fluorine rubber, an ionic liquid, and a conductive filler.

Abstract: The invention provides a polymer processing additive which, when added to a melt-processable resin, is highly effective in improving the moldability of the resin, and a molding composition containing the polymer processing additive, among others. This invention is related to a polymer processing additive comprising a fluoroelastomer subjected to heat treatment with an alkali metal inorganic salt or alkaline earth metal inorganic salt added thereto.

Abstract: A fluoropolymer liquid composition including a fluoropolymer liquid (A) which includes a liquid medium and a crosslinkable functional group-containing crosslinkable fluoropolymer. The fluoropolymer liquid (A) is a fluoropolymer liquid dispersion (AD) having, dispersed in a liquid dispersion medium, particles of a crosslinkable fluoropolymer (PD) containing acid/acid salt groups or organic groups capable of undergoing hydrolysis and thus being converted to carboxyl groups, or a fluoropolymer solution (AS) having, dissolved in a fluorosolvent or an alcohol/water mixed solvent, a crosslinkable fluoropolymer (PS) containing acid/acid salt groups or acid/acid salt groups precursors. Further, the crosslinkable functional group is a cyano group, —I or —Br.

Abstract: A fluoropolymer liquid composition including a fluoropolymer liquid (A) which includes a liquid medium and a crosslinkable functional group-containing crosslinkable fluoropolymer. The fluoropolymer liquid (A) is a fluoropolymer liquid dispersion (AD) having, dispersed in a liquid dispersion medium, particles of a crosslinkable fluoropolymer (PD) containing acid/acid salt groups or organic groups capable of undergoing hydrolysis and thus being converted to carboxyl groups, or a fluoropolymer solution (AS) having, dissolved in a fluorosolvent or an alcohol/water mixed solvent, a crosslinkable fluoropolymer (PS) containing acid/acid salt groups or acid/acid salt groups precursors. Further, the crosslinkable functional group is a cyano group, —I or —Br.

Abstract: The invention provides a polymer processing additive which, when added to a melt-processable resin, is highly effective in improving the moldability of the resin, and a molding composition containing the polymer processing additive, among others. This invention is related to a polymer processing additive comprising a fluoroelastomer subjected to heat treatment with an alkali metal inorganic salt or alkaline earth metal inorganic salt added thereto.

Abstract: The present invention provides a process for producing a fluorinated ionomer, comprising copolymerizing, in the presence of a polymerization initiator, (i) a compound represented by Formula (I) (M)1/LOSO2CFY(CF2)mO(CFXCF2O)nCF?CF2??(I) wherein M is H or a metal with a valence of L (L is 1, 2 or 3), X is F, Cl or CF3, Y is halogen, m is 1 to 5, and n is 0 to 5, (ii) tetrafluoroethylene and (iii) at least one third monomer selected from the group consisting of hexafluoropropylene, chlorotrifluoroethylene, vinylidene fluoride, CF2?CFORf (Rf is C1 to C5 perfluoroalkyl) and ethylene. The present invention further provides a method for purifying and concentrating a fluorinated ionomer, comprising ultrafiltration or dialysis of a fluorinated ionomer solution or dispersion, and a method for forming a film of the fluorinated ionomer.

Abstract: The present invention relates to a method for producing a fluorocopolymer which comprises a polymerization reaction of a fluorine-containing ethylenic monomer with a fluorovinyl ether derivative represented by the following general formula (I): CF2?CF—O—[CF2CF(CF3)O]n—(CF2)m-A??(I) (wherein n represents an integer of 0 to 3, m represents an integer of 1 to 5, and A represents —SO2X or —COOY; X represents a halogen atom or —NR1R2; R1 and R2 are the same or different and each represents a hydrogen atom, an alkali metal, an alkyl group or a sulfonyl-containing group and Y represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms) to give a fluorocopolymer, said fluorine-containing ethylenic monomer being a perhaloethylenic monomer represented by the following general formula (II): CF2?CF—Rf1??(II) (wherein Rf1 represents a fluorine atom, a chlorine atom, Rf2 or ORf2; Rf2 represents a straight or branched perfluoroalkyl group having 1 to 9 carbon atoms, which may have an ether oxygen atom(s)) a

Abstract: The present invention relates to a method for producing a water-soluble fluorine-containing vinyl ether which comprises subjecting a fluorine-containing 2-alkoxypropionic acid derivative represented by the following general formula (I): (wherein A represents —OM1 or —OM21/2, and M1 represents an alkali metal and M2 represents an alkaline earth metal; X represents a halogen atom; Y1 and Y2 are the same or different and each represents a fluorine atom, a chlorine atom, a perfluoroalkyl group or a fluorochloroalkyl group; n represents an integer of 0 to 3, and n of Y1s may be the same or different; m represents an integer of 1 to 5, and m of Y2s are the same or different; and Z represents a hydrophilic group) to thermal decomposition at a temperature of not lower than 50° C. but lower than 170° C.

Abstract: It is an object of the present invention to provide a liquid composition which comprises an acid/acid salt group-containing polymer and from which cured articles excellent in mechanical characteristics and undergoing only slight dimensional changes depending on the moisture content can be produced by application thereof to a substrate or impregnation of a porous material therewith.

Abstract: A method for producing a regenerated fluororesin, characterized in that it comprises subjecting a used melt-molded fluororesin article to a heat treatment at a temperature of from room temperature to the melting point of the resin; a method for producing a regenerated fluororesin, characterized in that it comprises subjecting a used melt-molded fluororesin article to a supercritical washing treatment at a temperature of from room temperature to the melting point of the resin; and a regenerated fluororesin article containing substantially no impurities which is obtainable by the above method.

Abstract: The invention provides a fluoropolymer liquid composition comprising a fluoropolymer and a film-forming auxiliary, said fluoropolymer comprising acid/acid salt fluorovinyl ether units represented by the general formula (I): said film-forming auxiliary being an organic liquid which is compatible with water and has a boiling point higher than 100° C. but not higher than 300° C., said fluoropolymer liquid composition being a fluoropolymer dispersion composition comprising said film-forming auxiliary and a fluoropolymer fine particle comprising said fluoropolymer, said fluoropolymer fine particle containing, at the proportion of at least 25% by mass thereof, a spherical fluoropolymer fine particle, and said spherical fluoropolymer fine particle being substantially spherical.

Abstract: The present invention relates to a method for producing a fluorocopolymer which comprises a polymerization reaction of a fluorine-containing ethylenic monomer with a fluorovinyl ether derivative represented by the following general formula (I): CF2?CF—O—[CF2CF(CF3)O]n—(CF2)m-A??(I) (wherein n represents an integer of 0 to 3, m represents an integer of 1 to 5, and A represents —SO2X or —COOY; X represents a halogen atom or —NR1R2; R1 and R2 are the same or different and each represents a hydrogen atom, an alkali metal, an alkyl group or a sulfonyl-containing group and Y represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms) to give a fluorocopolymer, said fluorine-containing ethylenic monomer being a perhaloethylenic monomer represented by the following general formula (II): CF2?CF—Rf1??(II) (wherein Rf1 represents a fluorine atom, a chlorine atom, Rf2 or ORf2; Rf2 represents a straight or branched perfluoroalkyl group having 1 to 9 carbon atoms, which may have an ether oxygen atom(s)) an

Abstract: The present invention relates to a method for producing a water-soluble fluorine-containing vinyl ether which comprises subjecting a fluorine-containing 2-alkoxypropionic acid derivative represented by the following general formula (I): (wherein A represents —OM1 or —OM21/2, and M1 represents an alkali metal and M2 represents an alkaline earth metal; X represents a halogen atom; Y1 and Y2 are the same or different and each represents a fluorine atom, a chlorine atom, a perfluoroalkyl group or a fluorochloroalkyl group; n represents an integer of 0 to 3, and n of Y1s may be the same or different; m represents an integer of 1 to 5, and m of Y2s are the same or different; and Z represents a hydrophilic group) to thermal decomposition at a temperature of not lower than 50° C. but lower than 170° C.

Abstract: A fluoropolymer solid composition which contains a fine particle comprising a fluoropolymer, said fluoropolymer having an acid/acid salt group, said acid/acid salt group being a sulfonic acid group, —SO2NR17R18, a carboxyl group, —SO3NR1R2R3R4, —SO3M11/L, —COONR5R6R7R8 or —COOM21/L (in which R17 and R18 are the same or different and each represents a hydrogen atom, an alkali metal, an alkyl group or a sulfonyl-containing group, R1, R2, R3 and R4 are the same or different and each represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R5, R6, R7 and R8 are the same or different and each represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, M1 and M2 are the same or different and each represents a metal whose valence is L, and said metal whose valence is L is a metal belonging to the group 1, 2, 4, 8, 11, 12 or 13 of the periodic table); said fine particle comprising the fluoropolymer containing, at the proportion of at least 25% by mass thereof, a spherical fluoropolymer

Abstract: The present invention is to provide a laminated resin molding comprising a polyamide-based resin composition as an outer layer and being excellent in interlayer adhesion strength, in particular a laminated resin molding comprising a fluorine-containing resin as an inner layer. The present invention is a laminated resin molding which comprises a layer (A) comprising a polyamide-based resin composition and a layer (B) laminated to said layer (A), said layer (B) comprising a fluorine-containing ethylenic polymer having a carbonyl group, and said polyamide-based resin composition having a functional group, in addition to an amide group, selected from the group consisting of hydroxyl group, carboxyl group, ester group and sulfonamide group in a total amount of 0.05 to 80 equivalent percent relative to the amide group.

Abstract: A multilayer molding having a polyamide-based resin as an outer layer, the multilayer molding including a fluorine-containing resin as an inner layer, as well as a resin laminate which can form the multilayer molding. The resin laminate has a layer (A) including a polyamide-based resin and a layer (B) including a fluorine-containing ethylenic polymer laminated to the layer (A), the polyamide-based resin having an amine value of 10 to 60 equivalents/106 g, and the fluorine-containing ethylenic polymer being a fluorine-containing ethylenic polymer having a carbonyl group.

Abstract: A polymer having a structure of the formula: in which X, Y and Z represent independently each other H, F, Cl, Br or I, provided that at least one of X, Y and Z is F; R represents a straight or branched fluorinated alkylene group which may contain an oxygen atom; x and y represent mole percentages and x is from 1 to 100% by mole; A is —CN, —NCO, —COOR′ in which R′ is H or an alkyl group having 1 to 10 carbon atoms, an acid anhydride group or an unsaturated hydrocarbon group; and M is a repeating unit derived from a copolymerizable monomer is treated with a crosslinking agent selected from ammonia, diamines and polyol compounds and crosslinked through the side functional groups of the polymer. This crosslinking method can be carried out at room temperature and provides a transparent fluoropolymer having better heat resistance than conventional transparent thermoplastic resins.