Shin-etsu Chemical Co., Ltd.

Shigeki Yasuda

Munenao Hirokami

Tetsuro Yamada

Takafumi Sakamoto

Kazuhiro Tsuchida

Taiki Katayama

Akira Uta

An organic silicon compound having a ketimine structure having good storage stability can be obtained by a production method that produces an organic silicon compound having a ketimine structure indicated by formula (1) Rand Reach independently indicating a C1-10 alkyl group or a C6-10 aryl group, Rand Reach independently indicating a hydrogen atom, a C1-10 alkyl group, or a C6-10 aryl group, n indicating an integer of 1-3, and m indicating an integer of 1-12. The method includes steps (I) and (II) and has a chlorine atom content relative to the organic silicon compound indicated by formula (1) of less than 0.1 mass ppm. Step (I): an amino group-containing silicon compound indicated by formula (2) and a carbonyl compound indicated by formula (3) are caused to react. R-R, n, and m are as described above. Step (II): the chlorine atom content is reduced.

Production method for organic silicon compound having ketimine structure

Disclosed is an organopolysiloxane having a constituent unit represented by a general formula (1), a constituent unit represented by a general formula (2), and a group represented by a general formula (3) that is directly bonded to a silicon atom. Rrepresents an alkyl group or an aryl group. Reach independently represents an alkyl group or an aryl group, n is each independently 2 or 3, and m is an integer of 5 to 100.RO—  (3) Rrepresents a hydrogen atom, an alkyl group, or an aryl group.

Organopolysiloxane and coating composition containing organopolysiloxane

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:

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Annaka, Japan

Shigeki Yasuda