摘要:
An aqueous TFE polymer dispersion which has a high concentration and is stable although it is a dispersion obtained through polymerization in the absence of a fluorochemical surfactant or in the presence of the surfactant in a low concentration. It is an aqueous TFE polymer dispersion obtained by polymerizing TFE in an aqueous medium in the presence of a fluorovinyl group-containing emulsifying agent comprising a fluorovinyl group-containing compound having a carboxy group, and is characterized by comprising the aqueous medium and particles of a TFE polymer dispersed therein and having a fluorochemical surfactant content of 1,000 ppm by mass or lower.
摘要:
A fluorinated allyl ether polymer which consists only of chains made up of at least one kind of structural units represented by general formula (1) (wherein A represents a C1-100 organic group) and has a number-average molecular weight of 1,000 to 1,000,000.
摘要:
To provide the water-repellent coating film having excellent transparency, abrasion resistance, weather resistance and water repellency, the method for producing the coating film, the multi-functional composite material provided with the coating film and the coating composition used therefor which has excellent dispersion stability. The coating composition comprises (A) the fluorine-containing ethylenic polymer prepared by copolymerizing a fluorine-containing ethylenic monomer having at least one functional group selected from hydroxyl, carboxyl, a carboxylic salt group, a carboxylic ester group and epoxy, (B-1) the metal oxide sol, and (C) the solvent.
摘要:
A resin composition which gives a molded article having both of excellent mechanical properties and abrasion resistance with maintaining excellent thermal resistance, chemical resistance, surface characteristics (non-sticking property, low friction property), electric insulating property, etc. of a fluorine-containing polymer; a molded article obtained from the resin composition; and a method for producing the molded article are provided. The resin composition comprises: (A-1) a fluorine-containing ethylenic polymer prepared by copolymerizing at least one of fluorine-containing monomers having any one of hydroxyl, carboxyl, a carboxylate salt group, a carboxylate ester group or epoxy in an amount of 0.05 to 30 % by mole on the basis of the total amount of monomers, and (B-1) an inorganic filler or a non-meltable organic filler, wherein said resin composition comprises 1 to 99.5 % by weight of the component (A-1) and 0.5 to 99 % by weight of the component (B-1).
摘要:
A water-repellency agent for cells, comprising an aqueous dispersion or organosol containing fine particles of a tetrafluoroethylene-perfluoro (alkyl vinyl ether) copolymer and/or a nonfibrillating tetrafluoroethylene polymer having a mean particle diameter of 0.05 - 1 νm. The agent can be prepared without the necessity for using a fluororesin powder as such, does not cause fibrillation even when mixed with electrode materials, can improve chemical resistance, thermal resistance and especially water repellency, and is excellent in workability. Cells produced by using this agent are excellent in cycle life and internal pressure characteristics.
摘要:
The present invention provides a method of producing a fluoropolymer aqueous dispersion by which the fluorine-containing emulsifier contained in the fluoropolymer aqueous dispersion as obtained after polymerization can be efficiently removed as well as a fluoropolymer aqueous dispersion low in fluorine-containing emulsifier concentration. The present invention is a method of producing a fluoropolymer aqueous dispersion which comprises carrying out a concentration treatment comprising a concentration operation of a pretreatment fluoropolymer aqueous dispersion, wherein the pretreatment fluoropolymer aqueous dispersion is obtained by carrying out a polymerization in an aqueous medium in the presence of a fluorine-containing surfactant (A), the fluorine-containing surfactant (A) is a fluorine-containing surfactant having an octanol/water partition coefficient of 1.5 to 3.5.
摘要:
A multilayered molding which has an outer layer made of a polyamide resin composition and has excellent interlaminar adhesion, especially one further having an inner layer comprising a fluororesin. The layered resin molding comprises a layer (A) made of a polyamide resin composition and a layer (B) made of a carbonylated fluoroethylene polymer superposed on the layer (A), wherein the polyamide resin composition has at least one kind of functional groups selected from the group consisting of hydroxyl, carboxyl, ester, and sulfonamide groups besides amide groups in an amount of 0.05 to 80 eq.% based on the amide groups.
摘要:
A curable fluoropolymer which is represented by the formula -(A)-(M)- {wherein (M) is represented by the formula (1) [wherein X?1 and X2¿ each is hydrogen or fluorine; X3 is hydrogen, fluorine, CH¿3?, or CF3; and X?4 and X5¿ each is hydrogen, fluorine, or CF¿3?; Rf is an organic group consisting of a C1-40 fluoroalkyl group or C2-100 fluoroalkyl group having an ether bond and, bonded to the fluoroalkyl group, one to three Y?1s (Y1¿ is a C¿2-10? monovalent organic group having an ethylenically unsaturated carbon-carbon double bond at a terminal); a is an integer of 0 to 3; and b and c each is 0 or 1], and (A) is a structural unit derived from a monomer copolymerizable with the ethylenic fluoromonomer represented by the formula (M)}, and which comprises 0.1 to 100 mol% structural units (M) and 0 to 99.9 mol% structural units (A) and has a number-average molecular weight of 500 to 1,000,000. Also provided is an antireflection film obtained from this polymer.