Abstract: To provide a fluorinated elastomer composition which is excellent in flexibility and oil resistance to lubricant oil such as automatic transmission oil, is less susceptible to heat discoloration and is excellent also in moldability, and a molded product, cross-linked product and covered electric wire, using such a fluorinated elastomer composition. A fluorinated elastomer composition comprising a tetrafluoroethylene/propylene copolymer (a), an ethylene/tetrafluoroethylene copolymer (b) and an ethylene copolymer (c) containing epoxy groups, wherein the mass ratio [(a)/(b)] of the tetrafluoroethylene/propylene copolymer (a) to the ethylene/tetrafluoroethylene copolymer (b) is from 70/30 to 40/60, and the mass ratio [(b)/(c)] of the ethylene/tetrafluoroethylene copolymer (b) to the ethylene copolymer (c) containing epoxy groups is from 100/0.1 to 100/10.

Abstract: A fluorinated copolymer composition comprises ethylene/tetrafluoroethylene-containing copolymer and copper oxide. The ethylene/tetrafluoroethylene-containing copolymer comprises repeating units (A) based on ethylene, repeating units (B) based on tetrafluoroethylene and repeating units (C) based on another monomer, in a molar ratio of the repeating units (A) to the repeating units (B) of from 38/62 to 44/56, and in an amount of the repeating units (C) of from 0.1 to 2.6 mol % in all the repeating units of the ethylene/tetrafluoroethylene-containing copolymer. The content of the copper oxide is from 0.2 to 10 ppm based on the total weight of ethylene/tetrafluoroethylene-containing copolymer. The copper oxide has a BET surface area of from 5 to 30 m2/g. The volume flow rate of the fluorinated copolymer composition at 297° C. is from 15 to 150 g/10 min.

Abstract: To provide a fluorinated elastomer composition which is excellent in flexibility and oil resistance to lubricant oil such as automatic transmission oil, is less susceptible to heat discoloration and is excellent also in moldability, and a molded product, cross-linked product and covered electric wire, using such a fluorinated elastomer composition. A fluorinated elastomer composition comprising a tetrafluoroethylene/propylene copolymer (a), an ethylene/tetrafluoroethylene copolymer (b) and an ethylene copolymer (c) containing epoxy groups, wherein the mass ratio [(a)/(b)] of the tetrafluoroethylene/propylene copolymer (a) to the ethylene/tetrafluoroethylene copolymer (b) is from 70/30 to 40/60, and the mass ratio [(b)/(c)] of the ethylene/tetrafluoroethylene copolymer (b) to the ethylene copolymer (c) containing epoxy groups is from 100/0.1 to 100/10.

Abstract: To provide a fluorinated copolymer composition which is excellent in physical properties such as abrasion resistance, etc. and which is suitable for use as e.g. an electric wire-coating material; a molded product; and an electric wire. The fluorinated copolymer composition comprises fluorinated copolymer (A) comprising constituent units (a) derived from tetrafluoroethylene, constituent units (b) derived from a fluorinated monomer (provided that tetrafluoroethylene is excluded), and constituent units (c) derived from a monomer having an acid anhydride residue and no fluorine atom, in a specific ratio, and thermoplastic resin (B) having a Rockwell hardness of at least M60 and an insulation performance as defined by ASTM D-257 of at least 1015 ?·cm in a volume ratio of (A)/(B)=from 99/1 to 55/45. The molded product and the electric wire are ones prepared by using such a fluorinated copolymer composition.

Abstract: To provide a fluorinated copolymer composition from which a molded product excellent in the heat resistance and the stress crack resistance can be produced with good productivity. A fluorinated copolymer composition comprising ETFE and copper oxide, wherein the ETFE has repeating units (A) based on ethylene, repeating units (B) based on tetrafluoroethylene and repeating units (C) based on another monomer, in a molar ratio of the repeating units (A) to the repeating units (B) of from 38/62 to 44/56, and contains the repeating units (C) in an amount of from 0.1 to 2.6 mol % in all the repeating units of the ETFE; the content of the copper oxide is from 0.2 to 10 ppm based on the ETFE; and the volume flow rate of the fluorinated copolymer composition at 297° C. is from 15 to 150 g/10 min.

Abstract: A tetrafluoroethylene (TFE)/perfluoro (alkyl vinyl ether) (PVE) copolymer and a method for producing the copolymer, wherein the molar ratio of polymerized units based on TFE/polymerized units based on PVE is in the range of from 98.1/1.9 to 95.0/5.0, and its melt flow rate at 372° C. is from 35 to 60 g/10 min., and a weight-average molecular weight/a number-average molecular weight is from 1 to 1.7. The copolymer of TFE/PVE is excellent in the mechanical properties and the injection molding properties.

Abstract: A tetrafluoroethylene(TFE)/perfluoro (alkyl vinyl ether) (PVE) copolymer and a method for producing the copolymer, wherein the molar ratio of polymerized units based on TFE/polymerized units based on PVE is in the range of from 98.1/1.9 to 95.0/5.0, and its melt flow rate at 372° C. is from 35 to 60 g/10 min., and a weight-average molecular weight/a number-average molecular weight is from 1 to 1.7. The copolymer of TFE/PVE is excellent in the mechanical properties and the injection molding properties.

Abstract: In 100 parts by weight of a composition, from 2 to 89 parts by weight of a fluorinated polymer having a fluorine content of at least 65 wt %, from 97 to 10 parts by weight of a non-fluorinated polymer and from 1 to 35 parts by weight of a dispersing agent having a carboxylic acid group or its derivative, or a sulfonic acid group or its derivative, are blended.

Abstract: In 100 parts by weight of a composition, from 2 to 89 parts by weight of a fluorinated polymer having a fluorine content of at least 65 wt %, from 97 to 10 parts by weight of a non-fluorinated polymer and from 1 to 35 parts by weight of a dispersing agent having a carboxylic acid group or its derivative, or a sulfonic acid group or its derivative, are blended.

Abstract: A composition which contains ETFE and PAS in a weight ratio of 5-95/5-95, and which further contains an organic onium compound in such a proportion that the weight ratio of the total amount of the above two component polymers and the organic onium compound is 80-99.99/0.01-20.

Abstract: A polymer alloy comprising ETFE having a melting point of at most 250.degree. C. and a melt flow rate of at least 20 at 297.degree. C., PPS and a compatibilizer (such as 3-aminopropyltriethoxysilane).