초록 ▼

The present invention provides a room temperature curable polyorganosiloxane composition comprising: (A) 100 parts by weight in total of: (1) a polydiorganosiloxane of the general formula: ##STR## (2) a silane of the general formula: ##EQU##R b 3 Si(OR 4 ) 4-b (B) 0.01 to 10 parts by weigh

The present invention provides a room temperature curable polyorganosiloxane composition comprising: (A) 100 parts by weight in total of: (1) a polydiorganosiloxane of the general formula: ##STR## (2) a silane of the general formula: ##EQU##R b 3 Si(OR 4 ) 4-b (B) 0.01 to 10 parts by weight of a curing catalyst; (C) 0.5 to 10 parts by weight of a nitrogen-containing silicon compound in which the nitrogen atom is bonded with a silicon atom through one or more carbon atoms and said nitrogen atom is further bonded directly with said silicon atom or another silicon atom; and (D) 0.05 to 50 parts by weight of a polyoxyalkylene chain-containing compound.

대표청구항 ▼

1. A room temperature curable polyorganosiloxane composition comprising: (A) 100 parts by weight in total of: (1) a polydiorganosiloxane of the general formula: ##EQU##R a 1 (R 2 O) (3-a ) SiO--R 2 SiO-- n Si(OR 2 ) (3-a ) R a 1 wherein R and R 1 are the same or different and represent a

1. A room temperature curable polyorganosiloxane composition comprising: (A) 100 parts by weight in total of: (1) a polydiorganosiloxane of the general formula: ##EQU##R a 1 (R 2 O) (3-a ) SiO--R 2 SiO-- n Si(OR 2 ) (3-a ) R a 1 wherein R and R 1 are the same or different and represent a monovalent substituted or unsubstituted hydrocarbon group, R 2 represents a monovalent group selected from the group consisting of alkyl groups having 1 to 4 carbon atoms and alkoxyalkyl groups having 1 to 6 carbon atoms in total, a represents a number of 0 or 1 and n represents a number for controlling the viscosity of (a) from 100 to 500,000 cP at 25° C., and (2) a silane of the general formula: ##EQU##R b 3 Si(OR 4 ) 4-b wherein R 3 represents a monovalent substituted or unsubstituted hydrocarbon group, R 4 represents a monovalent group selected from the group consisting of alkyl groups having 1 to 4 carbon atoms and alkoxyalkyl groups having 1 to 6 carbon atoms in total and b represents a number of 0 or 1, or a partially hydrolyzed condensate thereof with the proviso that the amount of (A)(1) is 85 to 100 wt. % based on the total of (A)(1) and (A)(2); (B) 0.01 to 10 parts by weight of a curing catalyst; (C) 0.5 to 10 parts by weight of a nitrogen-containing silicon compound in which the nitrogen atom is bonded with a silicon atom through one or more carbon atoms and said nitrogen atom is further bonded directly with said silicon atom or another silicon atom; and (D) 0.05 to 50 parts by weight of a polyoxyalkylene chain-containing compound. 2. A composition according to claim 1 wherein the terminal group of (A)(1) is a methyldimethoxysilyl group. 3. A composition according to claim 2 wherein (A)(1) is a polydimethylsiloxane terminated with a methyldimethoxysilyl group. 4. A composition according to claim 1 wherein the terminal group of (A)(1) is a trimethoxysilyl group. 5. A composition according to claim 1 wherein the viscosity of (A)(1) at 25° C. is 500 to 200,000 cP. 6. A composition according to claim 1 wherein R 4 of (A)(2) is a methyl group. 7. A composition according to claim 6 wherein (A)(2) is tetramethoxysilane. 8. A composition according to claim 6 wherein (A)(2) is methyltrimethoxysilane. 9. A composition according to claim 6 wherein (A)(2) is vinyltrimethoxysilane. 10. A composition according to claim 1 wherein R 4 of (A)(2) is a methoxymethyl group. 11. A composition according to claim 1 wherein the amount of (A)(2) is 0.4 to 5 wt. % based on (A). 12. A composition of according to claim 1 wherein (B) is an organotin compound. 13. A composition according to claim 1 wherein the amount of (B) is 0.1 to 1 part by weight. 14. A composition according to claim 1 wherein (C) is N-trimethylsilyl-γ-aminopropyltriethoxysilane. 15. A composition according to claim 1 wherein (C) is 1,1-dimethoxy-2-trimethylsilyl-1-sila-2-azacyclopentane. 16. A composition according to claim 1 wherein (C) is poly(1,1-dimethoxy-5-trimethylsilyl-1-sila-5-azapentane). 17. A composition according to claim 1 wherein the amount of (C) is 1 to 5 parts by weight. 18. A composition according to claim 1 wherein (D) is polyoxyalkylene. 19. A composition according to claim 1 wherein (D) is a polyorganosiloxane/polyoxyalkylene copolymer. 20. A composition according to claim 1 wherein the amount of (D) is 0.1 to 10 parts by weight.