Daikin Industries, Ltd.

Daikin Kogyo Co., Ltd.

Sumitomo Chemical Company, Limited

Masahiko Oka

Masayasu Tomoda

Shigeru Morita

Yutaka Ueta

Mitsuru Kishine

Shoji Kawachi

Yasuyoshi Furukawa

Hideo Kano

Masayoshi Tatemoto

Hideya Saito

Masuo Kokumai

Tetsuo Shimizu

Hiroyuki Tanaka

Masanori Kitaichi

Yoshiharu Tatsukami

Daisuke Ota

Kazuyoshi Kawasaki

Takeshi Suzuki

Shoji Fukuoka

Tsuneo Nakagawa

Ken Okanishi

Shinichi Nakagawa

Yosuke Nishimura

Yutaka Kometani

Toshiki Doi

Yuji Yutani

Yasuko Takagahara

Shinji Murakami

Yasuji Iwasaki

Singo Tanigawa

Tutomu Terada

Takesi Suzuki

Hiroshi Uemoto

Kazuhiko Kuwahara

The present invention provides a processing additive which can bring about improvements in moldability at Mooney viscosity levels at which the dispersibility in a melt-processable resin is high and which further can work at reduced addition levels. The present invention is a processing additive comprising a fluoropolymer having an acid value of not lower than 0.5 KOH mg/g.

Processing additive, molding composition masterbatch of processing additive and molding article

A process for preparing a fluorine-containing polymer which includes a first step for preparing a dispersion of fluorine-containing emulsified particles (A) having ionic functional groups where a fluorine-containing monomer mixture (i) is polymerized by using a water soluble radical polymerization initiator (a) without addition of an emulsifying agent, and a second step for preparing a fluorine-containing polymer (b) having a small amount of ionic functional groups where fluorine-containing monomers (ii) are emulsion-polymerized by using a radical polymerization initiator (b) in the presence of the fluorine-containing emulsified particles (A) having ionic functional groups without addition of an emulsifying agent.

Process for preparing fluorine-containing polymer

There is provided a fluorine-containing elastomer composition assuring easy kneading and providing a crosslinked article having improved strength. The fluorine-containing elastomer composition comprises (A) an elastomer of a vinylidene fluoride/hexafluoropropylene copolymer having a branching coefficient of 30 to 300 ppm, a Mooney viscosity (ML: 121&#xb0; C.) of 7 to 80 and a molecular weight distribution (Mw/Mn) of 1.5 to 4, and (B) an elastomer of a vinylidene fluoride/hexafluoropropylene copolymer having a storage modulus G' at 180&#xb0; C. at 500 cpm of 500 to 900, and a mass ratio of (A)/(B) is 70/30 to 90/10.

Fluorine-containing elastomer composition

Fluorovinyl ether

A novel fluorine-containing acrylic acid derivative of the invention is represented by the formula:

Fluorine-containing acrylic acid derivative and polymer thereof

Novel fluorovinyl ether and copolymer comprising the same

A fluorine-containing non-crystalline copolymer comprising 10 to 90% by mole of repeating units derived from tetrafluoroethylene and 90 to 10% by mole of repeating units derived form a fluorovinyl ether of the formula:

Novel fluorine-containing non-crystalline copolymer

Novel fluorine-containing acrylic acid derivative and polymer thereof

A cross-linkable coating composition comprising a fluorine-containing elastomeric copolymer which comprises (a) 50 to 95% by mole of repeating units derived from a fluoroolefin of the formula:

Cross-linkable coating composition

An optical fiber comprising a core and a cladding, wherein the core is made of a polymer comprising units of methyl methacrylate, and the cladding is made of a copolymer comprising units of vinylidene fluoride and 0.5 to 10% by mole of units of hexafluoropropene, having good heat resistance and flexibility and is excellent in adhesivity between the core and the cladding.

Optical fiber comprising a methacrylate polymer core and a fluoro

An elastomeric fluoropolymer comprising 12 to 50% by mole of repeating units derived from a perfluorovinyl ether of the formula:

Novel elastomeric fluoropolymer and preparation thereof

A copolymer comprising repeating units derived from tetrafluoroethylene, vinylidene fluoride and hexafluoropropylene in a molar ratio within an area defined on a tetrafluoroethylene, vinylidene fluoride and hexafluoropropylene ternary composition diagram by a hexagon with its first vertex A at 34.0% by weight of tetrafluoroethylene, 8.5% by weight of vinylidene fluoride and 57.5% by weight of hexafluoropropylene; its second vertex B at 26.5% by weight of tetrafluoroethylene, 14.5% by weight of vinylidene fluoride and 59.0% by weight of hexafluoropropylene; its third vertex C at 31.0% by weight of tetrafluoroethylene, 24.0% by weight of vinylidene fluoride and 45.0% by weight of hexafluoropropylene; its fourth vertex D at 49.0% by weight of tetrafluoroethylene, 26.5% by weight of vinylidene fluoride and 24.5% by weight of hexafluoropropylene; its fifth vertex E at 49.0% by weight of tetrafluoroethylene, 11.0% by weight of vinylidene fluoride and 40.0% by weight of hexafluoropropylene; and its sixth vertex F at 50.0% by weight of tetrafluoroethylene, 9.0% by weight of vinylidene fluoride and 41.0% by weight of hexafluoropropylene having not only good flexibility, heat resistance and flame retardance but also good insulating performance and moldability.

Fluorine-containing elastomeric copolymer

An impregnated material comprising an organic or inorganic material selected from the group consisting of a woven fabric, a non-woven fabric and an open cell porous material which is impregnated with a copolymer which comprises 50 to 95% by mole of repeating units derived from tetrafluoroethylene and 5 to 50% by mole of repeating units derived from perfluoroalkyl vinyl ether of the formula:

Novel impregnated material of a copolymer of tetrafluoroethylene and

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Ohtsu, Japan

Masahiko Oka