Shin-etsu Chemical Co., Ltd.

Takeshi Nyuugaku

Ayumu Kiyomori

Koichi Nakazawa

An acryloxy or methacryloxy group-containing organosilicon compound of the formula (wherein Ris a substituted or unsubstituted monovalent hydrocarbon group of 1 to 10 carbon atoms, Ris a hydrogen atom or a methyl group, Ris an unsubstituted divalent hydrocarbon group of 1 to 18 carbon atoms, X is a halogen atom and n is an integer of 1, 2 or 3) is to prepared by subjecting a hydrohalosilane compound of the formulaHSiXR  ()and an alkenyl group-containing (meth)acrylate compound of the formula to a hydrosilylation reaction in the presence of an acid amide compound and a platinum catalyst. This method is able to suppress, in the industrial scale production of (meth)acryloyloxy group-containing organosilicon compounds, propagation reactions by which the starting (meth)acrylate compound self-polymerizes.

Method for producing (meth)acryloxy group-containing organosilicon compounds

Disclosed is a transparent organopolysiloxane composition consisting of a powdery silicone resin having the following general formula (1), a carboxylic acid compound or a natural oil containing the carboxylic acid compound, and an aprotic solvent. (wherein Reach independently represents a substituted or unsubstituted divalent hydrocarbon group having 1 to 20 carbon atoms which may contain a hetero atom, Reach independently represents a hydrogen atom, a methyl group, or an ethyl group, and a represents an integer of 2 to 70).

Organopolysiloxane composition

To provide an organosilicon compound having a cyclic silazane structure, represented by the following general formula (1): wherein Rrepresents a hydrogen atom, an oxy radical, a hydroxyl group, a substituted or unsubstituted alkoxy group having 1 to 10 carbon atoms, or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, Rrepresents a substituted or unsubstituted alkylene group having 3 to 6 carbon atoms, Rand R each independently represent a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and n represents an integer of 0 to 2.

Organosilicon compound having cyclic silazane structure, composition containing the same, and method for producing the same

Provided is a surface treatment agent including an alkoxysilane compound having a cyclic silazane structure represented by the following general formula (1): wherein Rrepresents an unsubstituted linear alkyl group having 6 to 20 carbon atoms, Rrepresents a substituted or unsubstituted alkylene group having 3 to 6 carbon atoms that may include a heteroatom, Rand Reach independently represent a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and n represents an integer of 0 or 1.

Surface treatment agent and surface treatment method using the same

A (meth)acryloyloxy-containing organosilicon compound (3) is prepared by simultaneously feeding a hydrohalosilane compound (1) and a (meth)acrylate compound (2) in the presence of a polymerization inhibitor to a reaction system, and effecting hydrosilylation reaction in the presence of a platinum catalyst. The content of (meth)acrylate compound (2) is 0-100 mol % based on the content of organosilicon compound (3) in the reaction system. Ris a C-Cmonovalent hydrocarbon group, X is halogen, n is 1, 2 or 3, Ris H or methyl, and Ris a C-Calkylene group. 

Preparation of organosilicon compound having (meth)acryloyloxy group

Provided is a glycoluril ring-containing organosilicon compound having 4 organoxysilyl groups to form silanol groups capable of covalently bonding with hydroxyl groups on an inorganic material surface. The compound imparts mechanical strength and adhesion to an organic/inorganic composite material.

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Joetsu, Japan

Takeshi Nyuugaku