Organopolysiloxane composition for bonding to magnesium alloy
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsTsuneo Kimura, Mamoru Teshigawara
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Abstract
An organopolysiloxane composition for bonding to magnesium alloys comprises (A) 100 parts by weight of an organopolysiloxane of the following general formula (1) and/or (2) wherein R may be the same or different and represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and n is an integer of at least 10, X represents an oxygen atom or an alkylene group having 2 to 5 carbon atoms, and m independently represents an integer of 0 or 1, (B) 0.1 to 50 parts by weight of an organosilicon compound having at least three hydrolyzable groups bonded to silicon atoms in one molecule and/or a partial hydrolyzate thereof, and (C) 0.1 to 15 parts by weight of an acidic silane coupling agent.
Claims5
A self-adhesive organopolysiloxane composition for bonding to magnesium alloys comprising
- (A) 100 parts by weight of an organopolysiloxane of the following general formula (1) or (2) or a mixture thereof,
- HO(SiR2O)nH (1)
- wherein R may be the same or different and represents a halogen-substituted or unsubstituted alkyl, cycloalkyl or aryl group having 1 to 10 carbon atoms, and the letter n is an integer of at least 10,
- wherein R and n have the same meanings as above, X represents an oxygen atom or an alkylene group having 2 to 5 carbon atoms, and the letter m independently represents an integer of 0 or 1;
- (B) 0.1 to 50 parts by weight of an organosilicon compound having at least three hydrolyzable groups bonded to silicon atoms in a molecule and/or a partial hydrolyzate thereof;
- and
- (C) 0.1 to 15 parts by weight of an acidic silane coupling agent selected from the group consisting of an acid anhydride-functional silane coupling agent, a carboxylic acid-functional silane coupling agent, a sulfonic acid-functional silane coupling agent, a phosphoric acid-functional silane coupling agent, a phenol-functional silane coupling agent, and a fluoroalcohol-functional silane coupling agent.
Dependencies are inferred from the claim text.