Shin-etsu Chemical Co., Ltd.

Threebond Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Bayer Aktiengesellschaft

Kumiai Chemical Industry Co., Ltd.

Masatoshi Arai

Shinichi Sato

Yoshio Inoue

Tsuneo Kimura

Yoshifumi Inoue

Noriyuki Koike

Kazutoshi Fujioka

Takashi Matsuda

Takafumi Sakamoto

Koji Futatsumori

Hirofumi Kishita

Toshio Takago

Kei Miyoshi

Takeo Inoue

Yasuo Tarumi

Kouichi Yamaguchi

Koji Yokoo

Yasushi Yamamoto

Shinichi Satoh

Kazuyuki Suzuki

Kenichi Fukuda

Toshio Shinohara

Hironao Fujiki

Keisuke Imai

Toshiyuki Ozai

Atsushi Yaginuma

Hitoshi Kinami

Yasuhisa Osawa

Makoto Sato

Nobuhiro Katsuno

Kazukiyo Nagai

Masaharu Satou

Kin Saito

Akira Yamamoto

Koichi Ito

Shoji Ichinohe

Takeo Yoshida

Mikio Shiono

Koichi Yamaguchi

Hiromasa Yamaguchi

Yasunori Sakano

Hiroto Sugahara

Shigeshi Toyoshima

Ryuichi Sato

Masami Terashima

Masanobu Miyakoshi

Yoshifumi Harada

Mitsuyoshi Oshima

Nobuyuki Hasebe

Yuki Tateyama

Ken'ichi Itoh

Norihide Matsuyama

Tatsuya Kagosaki

Seiji Shimada

Yoshifumi Kurihara

Kouji Yokoo

Kesao Ide

Yasushi Moriyama

Akihiro Kawaguchi

Hiroshi Hasuike

Kazuo Takahashi

Tokuo Satou

Shigeru Saito

Kenichi Kojima

Tetsuo Tomizawa

A polymer having a number average molecular weight (Mn) of from 10,000 to 5,000,000, as determined by gel permeation chromatography and reduced to polystyrene, and repeating units represented by the following formula (1): wherein Rand Rmay be the same with or different from each other and are substituted or unsubstituted alkyl groups having 1 to 12 carbon atoms, a is a number of 0, 1, 2 or a mixture thereof, and b is a number of 0, 1, 2 or a mixture thereof.

Highly oxygen permeable polymer

A composition comprising wherein Ris a monovalent organic group which does not have an unsaturated bond and may be different from each other, k is the number of 0 or larger, n is the number of from 0.01 to less than 4, m is the number of from 0 to less than 4, provided that the sum of m and n is larger than 0 and less than 4,

Curable silicone composition

A crosslinkable fluororubber composition comprising (A) a liquid perfluoro compound having alkenyl groups and a divalent perfluorolakylene or perfluoropolyether structure, (B) a reinforcing filler, (C) a surface treating agent having a fluoroalkyl or fluoropolyalkyl ether group and a silanol group, (D) an addition reactive compound having hydrosilyl groups, and (E) a hydrosilyl or peroxide crosslinker is prepared by mixing components (A) to (C) to form a liquid or paste composition, adding component (D) thereto to form a millable composition, and mixing component (E) therewith. The composition is effectively roll workable and cures into products having excellent physical properties.

Crosslinkable fluororubber compositions and method of preparation

Rubber aircraft parts are made of the cured form of a curable composition comprising a perfluoropolyether polymer having a perfluoropolyether backbone and at least one reactive group, a crosslinking agent for crosslinking the polymer, and a silica filler having an average particle size of 0.001-10 &mgr;m. By providing dramatically improved sealability at low temperatures of &minus;25 to &minus;55&deg; C., particularly during use in a dynamic state, and much improved resistance to amines and other chemicals, such rubber parts can ensure the reliable sealability of fluid line junctions in jet engines.

Rubber parts for aircraft

A curable composition comprising (A) a fluorinated amide compound having at least one alkenyl radical, (B) a fluorinated organohydrogensiloxane, (C) a platinum group compound, (D) a first organosiloxane having at least one SiH radical and at least one epoxy and/or trialkoxysilyl radical, and (E) a second organosiloxane having at least one SiH radical, at least one cyclic carboxylic anhydride residue, and at least one monovalent perfluorooxyalkyl or perfluoroalkyl radical cures into a fluorinated elastomer that not only has good solvent resistance, chemical resistance, heat resistance, low-temperature properties, low moisture permeability and electrical properties, but also firmly bonds to a variety of substrates including PPS, polyamide and polyimide resins.

Curable compositions of fluorinated amide compounds

A curable fluoropolyether rubber composition comprising (A) a straight-chain fluoropolyether compound having at least two alkenyl groups and a perfluoropolyether structure backbone, (B) an organosilicon compound having at least two silicon atom-bonded hydrogen atoms, which all form H&mdash;SiCH &mdash; structures, and (C) a hydrosilylation catalyst cures into parts which have good heat resistance, chemical resistance, solvent resistance, parting property, water repellency, oil repellency and weather resistance as well as improved acid and alkali resistance and are useful as sealants.

Curable fluoropolyether rubber compositions

A curable fluoropolyether base rubber composition contains (A) 100 parts by weight of a linear fluoropolyether compound having at least two alkenyl groups in a molecule and a perfluoroalkyl ether structure in its backbone, (B) 10-40 parts by weight of a silica filler having a specific surface area of at least 50 m /g, (C) 5-35 parts by weight of diatomaceous earth, (D) an organosilicon compound having at least two Si&mdash;H groups, and (E) a hydrosilylation catalyst. The inclusion of diatomaceous earth is effective for preventing the composition from outgassing and from changing its curing behavior with time.

Curable fluoropolyether base rubber compositions

Fluorinated curable compositions

A curable rubber composition comprising a curable organopolysiloxane or perfluoropolyether group-containing organosilicon compound, a curing agent therefor, and a silica filler having a mean particle size of 0.001-10 &mgr;m is cured into a cured rubber. For improving compression set, the cured rubber is post treated with a hydrolyzable aminosilane or amidosilane having a Si&mdash;N bond.

Cured rubber and method of treating cured rubber

A curable composition comprising (A) a fluorinated organic silicon compound of the formula: Z&mdash;R,&mdash;Rf&mdash;R,&mdash;Z wherein Rf is a divalent fluorinated polyether group, R,is a divalent hydrocarbon group, and Z is a silyl or siloxane group terminated with OH, (B) an organic silicon compound as a crosslinking agent, and (C) a condensation accelerator is curable to depth at room temperature even in the absence of moisture.

Curable compositions

The invention provides a fluorine-containing curable composition comprising (A) a linear perfluoro compound having at least two alkenyl groups in its molecule and a divalent perfluoroalkylene or perfluoropolyether structure in its backbone, (B) a fluorinated organohydrogenpolysiloxane having at least four hydrosilyl groups in its molecule and a divalent perfluoro structure in its backbone, and (C) a platinum catalyst.

Fluorine-containing curable compositions

A hydrogen absorbing alloy electrode having on a conductive support a layer which contains as a main component a hydrogen absorbing alloy powder capable of absorbing and releasing hydrogen electrochemically and is covered with a fluorine-containing water repellent layer on the surface side; with the fluorine-containing water repellent layer being a layer formed by coating and curing a water repellent agent comprising (A) a straight-chain perfluorinated compound having at least two secondary amino groups per molecule and a divalent perfluoroalkylene or perfluoropolyether structure in the main chain and (B) a fluorine-containing epoxy compound having at least three epoxy groups per molecule.

Hydrogen absorbing alloy electrode and method of producing the same

The invention is directed at novel fluorinated amide compounds of formula (1): ##STR1## wherein Rf is a divalent perfluoroalkylene or perfluoropolyether group, X is a group of formula (2), (3) or (4), and m is an integer inclusive of 0. ##STR2## R.sup.1 is a monovalent hydrocarbon group, and R.sup.2 is a divalent hydrocarbon group. These compounds can be used to obtain elastomers or cured resins having a high fluorine content and a low surface energy, making them effective as starting materials in the production of chemical and solvent-resistant elastomeric materials, parting agents, and water repellents.

Fluorinated amide compounds

A fluorine-containing curable composition comprises (A) a linear perfluoro compound having at least two secondary amino groups per molecule and a divalent perfluoroalkylene or divalent perfluoropolyether structure in the main chain, and (B) a crosslinkable fluorinated compound having at least three functional groups which are crosslinkable with the secondary amino groups of (A). This composition readily cures, with standing at room temperature or heating only, to a cured product having excellent solvent and chemical resistance.

Flourine-containing curable compositions

Disclosed is a novel compound which is a perfluoroalkylene dianilide compound represented by the general formula ##STR1## in which Rf is a perfluoroalkylene group optionally interruptrd by oxygen atoms to form an ether linkage and R and R.sup.1 are each a hydrogen atom or a monovalent hydrocarbon group. When this compound has two or more hydrogen atoms directly bonded to the silicon atoms in a molecule, the compound is useful as a crosslinking agent for an organosilicon compound having two or more silicon-bonded vinyl groups in a molecule. Alternatively, the compound having two or more silicon-bonded vinyl groups in a molecule is useful as a crosslinking agent for an organosilicon compound having two or more silicon-bonded hydrogen atoms in a molecule. The dianilide compound is prepared by the coupling reaction between a perfluoroalkylene dicarboxylic acid difluoride and an N-trimethylsilyl-N-(3,5-disilylphenyl) amine compound.

Fluorine-containing amide compound

Growing community of inventors

Annaka, Japan

Masatoshi Arai