Sumitomo Chemical Company, Limited

Sanko Chemical Industry Co., Ltd.

Sumitomo Rubber Industries Limited

Mitsubishi Petrochemical Company Limited

Riken Technos Corporation

Sumitomo Electric Industries, Limited

Daikin Industries, Ltd.

Daikin Kogyo Co., Ltd.

Yoshiharu Tatsukami

Noriaki Fujihana

Motonobu Furuta

Toshifumi Tamura

Katsuramaru Fujita

Takayuki Hattori

Toshiaki Sakaki

Kenji Nagaoka

Hideo Shinonaga

Shuji Kitamura

Kenichi Uesaka

Katsumi Terakawa

Tetsuo Mizoguchi

Hiromasa Okubo

Kazunori Yano

Katsuhiro Abe

Ryuhei Matsui

Masaki Enomoto

Ikuo Ohkoshi

Hazime Nishibara

Yasutoshi Kobayashi

Kanji Yoshikawa

Yasuyuki Kato

Tsutomu Takahashi

Takashi Maruyama

Kuniaki Asai

Masayasu Tomoda

Katsuji Ueno

Masahiko Oka

Fumio Fujita

Masahiro Fujiwara

Masahiro Niwano

Mitsuyuki Okada

Yoshitaka Ohbe

Kazuo Hieda

Shigeo Wake

Hiroshi Shimba

Haruo Inoue

Masakazu Inoue

Toshiki Doi

Michihisa Isobe

Hiroaki Mukunashi

Junji Ono

Masato Ogura

Shigeki Kiriyama

Haruo Tateiwa

Takashi Futami

Toyoji Takamoto

Yasuhiro Oda

Masaru Oota

Toshihiro Oonishi

Masaki Room 102 Diapalace-Shinsugita Enomoto

An antistatic composition contains an ambient-temperature molten lithium salt dihydrate, and one of a polymerizable compound, a plastic resin, an elastomer and an adhesive resin in which the lithium salt dihydrate is dispersed. The lithium salt dihydrate contains two types of lithium salts with different molecular weights from each other. The two types of the lithium salts are selected from a group of lithium salts each containing an anion having a fluoro group and a sulfonyl group.

Antistatic composition, molded product, antistatic paint, antistatic coating, antistatic adhesive, and method of producing the antistatic composition

An antistatic composition containing various types of polymers such as a polyamide, an aliphatic polyester, an elastomer thereof and a polyurethane elastomer, and a metal salt in specific amounts, and preferably, an antistatic composition in which an additive component such as an organic compound which has an &#x2014;{O(AO)}&#x2014; group (A represents an alkylene group having 2 to 4 carbon atoms, and n represents an integer of 1 to 7) and all molecular chain terminals of which are CHand/or CHgroups is compounded as needed.

Antistatic composition

The present invention provides a polymeric-type antistatic agent containing a polymer composition consisting of a polymeric-type antistatic agent containing a resin or/and an elastomer as a main component thereof; or/and a thermoplastic resin having a polar group or/and an elastomer having the polar group. At least one kind of an anion-containing salt, having a fluoro group and a sulfonyl group, is added to the polymer composition without intermediary of a medium consisting of a low-molecular-weight polyether-containing compound or a low-molecular-weight polar compound whose number-average molecular weight is not more than 5000. The present invention also provides a composition, for a conductive roller or the like, containing polymer components and the polymeric-type antistatic agent dispersed in the polymer components.

Polymeric-type electric resistance control agent and polymer composition containing the same

A process for producing a polyphenylene ether is disclosed, comprising oxidatively polymerizing a phenol in an organic solvent in the presence of a catalyst for oxidative polymerization, finely dispersing the resulting polyphenylene ether containing the organic solvent in an aqueous dispersion medium containing an acid compound, and heating the aqueous dispersion to remove the solvent from the polyphenylene ether. The resulting polyphenylene ether has excellent powder properties and contains a reduced amount of a catalyst residue.

Process for producing polyphenylene ether, dispersing polyether in

A process for producing a plyphenylene oxide is disclosed, comprising oxidative polymerization of a nucleus-substituted phenol with an oxygen-containing gas in an organic solvent in the presence of a catalyst system comprising a manganese compound containing at least one divalent manganese salt, at least one basic compound selected from hydroxides, alkoxides or phenoxides of the group IA metals of the Periodic Table and hydroxides or oxides of the group IIA metals of the Periodic Table, an alkanolamine represented by formula (I)

Process for producing polyphenylene oxide with alkanolamine and

An aromatic polysulfone resin composition with excellent plating characteristics comprising:

Aromatic polysulfone resin composition having excellent plating

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 optical fiber with low attenuation of light transmission comprising a core and a cladding, wherein the core is made of a polymer comprising units of deuterated methyl methacrylate containing 10 to 40% of a methacrylic ester the ester moiety of which has an alicyclic hydrocarbon group of from 6 to 20 carbon atoms, and the cladding is made of a transparent polymeric material having a refractive index of at least 3% smaller than that of the core, which optical fiber has excellent heat and humidity resistance as well as good flexibility.

Plastic optical fiber resistant to heat and humidity

A plastic optical cable comprising a core, a cladding layer and a protective layer made of an ester type thermoplastic elastomer, which has low degree of thermal shrinkage and low attenuation of light transmission even at high temperature.

Plastic optical cable

A plastic optical fiber comprising a core and a cladding, wherein the core is made a polymer comprising units of methyl methacrylate and of a methacrylate ester, the ester moiety of which has an alicyclic hydrocarbon of 8 to 20 carbon atoms, and the cladding is made of a fluorine-containing polymer comprising units of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are each hydrogen or C.sub.1 -C.sub.3 alkyl, R.sub.f1 is fluorine or trifluoromethyl, an R.sub.f2 is C.sub.2 -C.sub.10 fluoroalkyl, which units (I) are derived from fluoroalkyl .alpha.-fluoroacrylate or trifluoromethacrylate, which has short- and long-time heat and humidity resistance as well as low attenuation of light transmission.

Plastic optical fiber

A heat-resisting optical fiber comprising a core and a cladding, characterized in that the core is made of a polymer comprising units of a methacrylic ester, of which the ester moiety has an alicyclic hydrocarbon group of not less than 8 carbon atoms, and the cladding is made of a transparent polymeric material having a refractive index of at least 3% smaller than that of the core. This optical fiber has excellent heat resistance and good flexibility and can be used at a high temperature over 110.degree. C.

Heat-resisting optical fiber

A process for producing polyphenylene oxide which comprises contacting a phenolic monomer with oxygen in the presence of a catalyst composed of a manganese (II) salt and an ortho-hydroxyazo compound represented by the following formula: ##STR1## wherein A and B represent identical or different arylene ring having a valency of at least 2 and having an oxy group and an azo group directly linked to the ortho carbon atoms of the arylene ring and R represents hydrogen or lower alkyl group, or in the presence of said catalyst and an amine, in a polymerization solvent containing a base and thereby subjecting said phenolic monomer to an oxidative polymerization.

Process for producing polyphenylene oxide

The invention is to provide the methods for producing highly water-absorbable and water-retainable hydrogels having a large particle diameter together with a sufficient gel strength. The method is characterized by use of a specific dispersing agent in the water-in-oil type inverse phase suspension polymerization of an .alpha.,.beta.-unsaturated carboxylic acid and/or its alkali metal salt. Due to the high water-absorbability and water-retainability, along with the superior gel strength and the stable gel structure, the hydrogels of the invention enlarge the conventional range of usages.

Production of hydrogels

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Toyonaka, Japan

Yoshiharu Tatsukami