Shin-etsu Chemical Co., Ltd.

Shin-etsu Chemical C O., Ltd.

Asahi Kasei Kabushiki Kaisha

Taisei Corporation

Chugoku Marine Paints, Ltd.

Takafumi Sakamoto

Tsuneo Kimura

Masatoshi Arai

Takahiro Yamaguchi

Taiki Katayama

Akitsugu Fujiwara

Akira Uta

Hironao Fujiki

Masayuki Ikeno

Tokuo Sato

Shinichi Sato

Takashi Matsuda

Tadashi Araki

Noriyuki Koike

Yasushi Yamamoto

Yasuo Tarumi

Kei Miyoshi

Kazutoshi Fujioka

Isao Iwasaki

Misaki Takai

Tetsuro Yamada

Shohei Nakamura

Mamoru Teshigawara

Tsuyoshi Matsuda

Norio Kameda

Kousi Anai

Yasuhiko Matsuoka

Tarou Kita

Shunji Aoki

Shinji Irifune

Munenao Hirokami

Nobuaki Matsumoto

Yoshifumi Inoue

Yoshihide Wakayama

Mitsuhiro Iwata

Masatoshi Miyake

Kohei Masuda

Katsuyoshi Amidaiji

Kazukiyo Nagai

Shigeki Yasuda

Tomoki Akiba

Takashi Hagiwara

Shinichi Tashiro

Noriko Kameda

Tokuo Satou

An organopolysiloxane modified with a lactate silyl at both ends according to the present invention, which is represented by general formula (1) (wherein each of R, Rand Rindependently represents an unsubstituted or substituted monovalent hydrocarbon group having 1-10 carbon atoms; m represents an integer of 10 or more; each a independently represents 2 or 3; and X represents an alkylene group having 2-4 carbon atoms or an oxygen atom),is useful as a starting material siloxane for a surface treatment agent for inorganic materials, a coating agent for water repellent treatments, and especially for a room-temperature curable (RTV) silicone rubber composition.

Organopolysiloxane modified with lactate silyl at both ends and method for producing same

This room-temperature-curable polybutadiene resin composition contains: Said room-temperature-curable polybutadiene resin composition allows a coating film to be obtained, in particular a coating film that is resistant to gas permeation, said coating film therefore being useful as a coating material having properties preventing corrosion by a corrosive gas.

Room-temperature-curable polybutadiene resin composition, method for producing same, and packaged circuit board

Provided are an ultraviolet curable organopolysiloxane composition having a favorable ultraviolet curability; and a cured product thereof that has a favorable adhesiveness. The ultraviolet curable organopolysiloxane composition contains:

Ultraviolet curable organopolysiloxane composition

Through the present invention, by undergoing a step in which a straight-chain diorganopolysiloxane having silanol groups at both terminal ends of the molecular chain thereof, a hydrolyzable silane and/or a partial hydrolysis condensate thereof having a hydrolyzable group capable of detaching a lactic acid ester, and an amino-group-containing hydrolyzable organosilane and/or a partial hydrolysis condensate thereof are pre-mixed/reacted in advance and silanol groups at both terminal ends of the molecular chain of a main agent (base polymer) are blocked by specific hydrolyzable silyl groups, it is possible to manufacture a lactic-acid-ester-type room-temperature-curable organopolysiloxane composition excellent in all characteristics including curability, adhesive properties, workability, and the like that were not attainable by the conventional lactic-acid-ester-type room-temperature curable (RTV) silicone rubber composition.

Method for manufacturing room-temperature-curable organopolysiloxane composition, room-temperature-curable organopolysiloxane composition, and article

A room-temperature-curable organopolysiloxane composition for an oil seal, wherein an organosilane compound containing a specific organo-oxymethyl group and represented by formula (1) below and/or a partial hydrolysis condensate of said compound is used as a curing agent (crosslinking agent), and an organic compound having a guanidine skeleton is added in combination as a curing catalyst. In the formula, each Ris independently a C1-12 unsubstituted or substituted monovalent hydrocarbon group, Ris a C1-12 unsubstituted or substituted monovalent hydrocarbon group, Y is a hydrolyzable group, and n is 0, 1 or 2. It is thus possible to obtain a cured product having good rubber properties, adhesiveness, and engine oil resistance after curing even without containing a metal-based catalyst:

Room-temperature-curable organopolysiloxane composition for oil seal, and automotive part

Provided is a novel polyoxyalkylene compound which contains, at a molecular chain terminal, at least one reactive silicon-containing group represented by formula (1) per molecule and which has a main chain that is a polyoxyalkylene polymer. Also provided are: a process for producing the novel polyoxyalkylene compound; a room-temperature-curable composition which includes the compound as a main component and can contain any of various crosslinking agents; a sealing material; and an article. (In formula (1), Rand Rare each a monovalent hydrocarbon group, a hydrogen atom, or a triorganosiloxy group; n is 2 or larger; m is 1 or larger; and the broken line is a linking bond).

Silanol-group-terminated polyoxyalkylene compound and production process therefor, room-temperature-curable composition, sealing material, and article

This organopolysiloxane composition, when cured at room temperature by moisture in the atmosphere, provides a silicone rubber cured product having good self-adhesiveness to a magnesium alloy. The organopolysiloxane composition contains (A) an organopolysiloxane having a hydroxy group and/or a hydrolysable silyl group at both ends of the molecular chain, (B) an organic silicon compound other than (A) and (C), having at least three hydrolysable groups bonded to a silicon atom per molecule, and/or a partial hydrolysis-condensation product thereof, and (C) a silane coupling agent having a specific molecular structure having a carboxylic acid silyl ester bond. Furthermore, a novel compound, having an alkoxysilyl group and a carboxylic acid silyl ester group per molecule, can have improved adhesiveness/bonding properties with respect to a base material due to the effect of carboxylic acid after hydrolysis thereof.

Organopolysiloxane composition, and organic silicon compound and production method therefor

A room-temperature-curable organopolysiloxane composition; a structure obtained from the composition; and a method for assessing the cured state of the composition are provided. The room-temperature-curable organopolysiloxane composition, which changes in color with the progress of curing from the uncured state, comprises the following ingredients: (A) 100 parts by mass of one or more organopolysiloxanes represented by formula (1)HO(SiRO)H&#x2003;&#x2003;(1)and/or formula (2) (with variables as defined herein); (B) 0.1-50 parts by mass of an organosilicon compound having at least three silicon-atom-bonded hydrolyzable groups in the molecule, which is not any of ingredients (A), (C), and (D), and/or a product of the partial hydrolytic condensation of the organosilicon compound; (C) 0.01-20 parts by mass of a curing catalyst; (D) 0.1-10 parts by mass of a silane coupling agent; and (E) 0.01-10 parts by mass of a pH indicator.

Room-temperature-curable organopolysiloxane composition, structure, and method for assessing cured state of said composition

Provided is a silicone gel composition containing, as essential components: Curing the silicone gel can provide a silicone gel cured product which has a degree of penetration of 40-100 as defined according to JIS K2220, has a free oil content of 15 mass % or less, has a low modulus and low stress, and does not exhibit oil bleeding over time.

Silicone gel composition, cured product thereof, and power module

This dealcoholization room-temperature curable organopolysiloxane composition contains (A) a diorganopolysiloxane having a silicon atom-bonded hydroxy group and/or a hydrolyzable silyl group at both ends of the molecular chain, and has a coefficient of viscosity of 20-1,000,000 mPa&#xb7;s, (B) an organopolysiloxane which is a partial (co-)hydrolysis-condensation product of a hydrolyzable organosilane compound having one or more silicon atom-bonded alkenyl groups and 1-3 silicon atom-bonded alkoxy groups, per molecule, (C) a hydrolyzable organosilane compound having one or more phenylene backbones and two or more amino groups, per molecule, and/or a partial hydrolysis-condensation product thereof. The dealcoholization room-temperature curable organopolysiloxane composition has good curability and storage stability even when the composition does not contain a metal catalyst, is less toxic to the human body and is environmentally friendly, is cost-competitive, and has good rubber physical properties and adhesiveness after being cured.

Dealcoholization room-temperature curable organopolysiloxane composition, and article sealed by cured product of same

An ultraviolet curable organopolysiloxane composition which contains: (in the formulae, a represents a number of 1-3; and the broken line represents a bonding hand); With use of this ultraviolet curable organopolysiloxane composition, the hardness of a cured product obtained therefrom is easily controlled, and good surface curability and good curability in deep portions are achieved even in the presence of oxygen. Consequently, this ultraviolet curable organopolysiloxane composition enables the achievement of a silicone gel (a gel-like cured product) which has been cured at a substantially uniform crosslinking density (with a substantially uniform penetration) without depending on the irradiance of ultraviolet light (the amount of irradiation energy).

Ultraviolet curable organopolysiloxane composition, silicone gel cured product and method for producing same, and pressure sensor

Provided is a curable organopolysiloxane composition from which highly heat-resistant cured products can be obtained, the curable organopolysiloxane composition comprising: (A) 100 parts by mass of a novel organopolysiloxane represented by formula (1) (Ris an alkyl group or an alkoxy substituted alkyl group having 1 to 6 carbon atoms, Ris a group selected from an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, and a group in which a portion of the hydrogen atoms of those groups is substituted with a halogen atom, Ar is an arylene group having 6 carbon atoms or more, a is 1 to 1,000, b is 1 to 5,000, and n is 1 to 3, the total of n in an unsubstituted or substituted alkoxysilyl group on both ends of the molecular chain being 3 or more); and (B) 0.01 to 10 parts by mass of a curing catalyst. Also provided are electrical and electronic components, a vehicle oil seal, a building sealant, etc. which use the cured product of the composition.

Arylene group-containing organopolysiloxane and curable organopolysiloxane composition using same

The present invention provides: a novel organic titanium compound having an effect as an adhesion promoter by itself; a production method of such organic titanium compound; and a room temperature-curable resin composition containing such organic titanium compound both as a curing catalyst and as an adhesion promoter. Provided are an organic titanium compound represented by an average composition formula (I):Ti(OR)(YSi-A-O&#x2014;CO&#x2014;CH&#x2550;C(O)R)(wherein Rrepresents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, R represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, A represents a divalent hydrocarbon group having 3 to 6 carbon atoms, Y represents a hydrolyzable group, and a represents a number satisfying 0&#x3c;a&#x3c;4); a production method of such organic titanium compound; and a room temperature-curable resin composition that contains a room temperature-curable resin.

Moisture and room temperature-curable organopolysiloxane resin composition and method for producing cured product thereof

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Annaka, Japan

Takafumi Sakamoto