US5508369A
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Organopolysiloxanes having a silanol group and process of making them
Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1994-08-17
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Granted: 1996-04-16
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Expires: 2014-08-17
Abstract
Abstract Novel organopolysiloxanes having one silanol group within a molecule and the method for manufacturing them at high purity and high yield. The organopolysiloxanes having a silanol group are expressed by the formula (1) below: <IMAGE> (1) wherein R1 is a monovalent hydrocarbon group with 1 to 8 carbon atoms, each of R2, R3 and R4 is a monovalent hydrocarbon group with 1 to 8 carbon atoms or a siloxyl group expressed by -OSiR5R7, wherein R5, R6 and R7 are monovalent hydrocarbon groups with 1 to 8 carbon atoms, Y is either a hydrogen atom, a halogen atom, or a monovalent hydrocarbon group with 1 to 12 carbon atoms, n is an integer of from 0 to 12, and a is either 0 or 1, with the proviso that the grouping Y-(CH2)n-Si does not includes H-Si, CH3-Si or a hydrolyzable silyl group.
Inventors
- 👤 Toshio Yamazaki
- 👤 Nobuyuki Suzuki
- 👤 Shinichi Morioka
- 👤 Shoji Ichinohe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:27
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
An organosiloxane having a silanol group of the formula (1) below, ##STR20## wherein R 1 is an unsubstituted nonovalent hydrocarbon group of 1 to 8 carbon atoms or a monovalent hydrocarbon group of 1 to 8 carbon atoms substituted by halogen or cyano groups, each of R 2 , R 3 , and R 4 is independently a monovalent hydrocarbon group of 1 to 8 carbon atoms or a siloxyl group expressed by --OSiR 5 R 6 R 7 wherein R 5 , R 6 , and R 7 are independently substituted or unsubstituted monovalent hydrocarbon groups with 1 to 8 carbon atoms, Y is a (meth)acryloyl group, n is an integer of from 0 to 12, and a is 0 or 1.
Claim 2
Dependent Claim
123 words
An organosiloxane having a silanol group of the formula (1) below, ##STR20## wherein R 1 is an unsubstituted nonovalent hydrocarbon group of 1 to 8 carbon atoms or a monovalent hydrocarbon group of 1 to 8 carbon atoms substituted by halogen or cyano groups, each of R 2 , R 3 , and R 4 is independently a monovalent hydrocarbon group of 1 to 8 carbon atoms or a siloxyl group expressed by --OSiR 5 R 6 R 7 wherein R 5 , R 6 , and R 7 are independently substituted or unsubstituted monovalent hydrocarbon groups with 1 to 8 carbon atoms, Y is a (meth)acryloyl group, n is an integer of from 0 to 12, and a is 0 or 1.
Claim 3
Dependent Claim
40 words
The organosiloxane of claim 1, wherein the monovalent hydrocarbon groups in R 1 -R 7 are alkyl groups, cycloalkyl groups, alkenyl groups, a phenyl group or a benzyl group, each of which is, optionally, substituted by halogens or cyano groups.
Claim 4
Dependent Claim
40 words
The organosiloxane of claim 1, wherein at least one of R 2 , R 3 and R 4 is a siloxyl group selected from the group consisting of trimethyl siloxyl, ethyl dimethyl siloxyl, 3,3,3-trifluoropropyl dimethyl siloxyl and cyanoethyl dimethyl siloxyl.
Claim 5
Dependent Claim
21 words
The organosiloxane of claim 1, wherein each of R 1 , R 2 , R 3 and R 4 is methyl.
Claim 6
Dependent Claim
193 words
An organosiloxane having a silanol group of the formula (1) below, ##STR21## wherein R 1 is an unsubstituted monovalent hydrocarbon group of 1 to 8 carbon atoms or a monovalent hydrocarbon groups of 1 to 8 carbon atoms substituted by halogen or cyano groups, each of R 2 , R 3 , and R 4 is independently a monovalent hydrocarbon group of 1 to 8 carbon atoms or a siloxyl group expressed by --OSiR 5 R 6 R 7 wherein R 5 , R 6 , and R 7 are independently substituted or unsubstituted monovalent hydrocarbon groups with 1 to 8 carbon atoms provided that at least one of r 2 , R 3 or R 4 is a siloxyl group selected from the group consisting of trimethyl siloxyl, ethyldimethyl siloxyl, 3,3,3,-trifluoropropyl dimethyl siloxyl and cyanoethyldimethyl siloxy, Y is either a hydrogen atom, a halogen atom, or a monovalent organic group of 1 to 12 carbon atoms, n is an integer of from 0 to 12, and a is either 0 or 1, with the proviso that the grouping, Y--(CH 2 ) n --Si is not H-Si, CH-Si or a hydrolyzable silyl group.
Claim 7
Dependent Claim
193 words
An organosiloxane having a silanol group of the formula (1) below, ##STR21## wherein R 1 is an unsubstituted monovalent hydrocarbon group of 1 to 8 carbon atoms or a monovalent hydrocarbon groups of 1 to 8 carbon atoms substituted by halogen or cyano groups, each of R 2 , R 3 , and R 4 is independently a monovalent hydrocarbon group of 1 to 8 carbon atoms or a siloxyl group expressed by --OSiR 5 R 6 R 7 wherein R 5 , R 6 , and R 7 are independently substituted or unsubstituted monovalent hydrocarbon groups with 1 to 8 carbon atoms provided that at least one of r 2 , R 3 or R 4 is a siloxyl group selected from the group consisting of trimethyl siloxyl, ethyldimethyl siloxyl, 3,3,3,-trifluoropropyl dimethyl siloxyl and cyanoethyldimethyl siloxy, Y is either a hydrogen atom, a halogen atom, or a monovalent organic group of 1 to 12 carbon atoms, n is an integer of from 0 to 12, and a is either 0 or 1, with the proviso that the grouping, Y--(CH 2 ) n --Si is not H-Si, CH-Si or a hydrolyzable silyl group.
Claim 8
Dependent Claim
46 words
The organosiloxane of claim 5, wherein the monovalent hydrocarbon groups in R 1 -R 7 , which are not siloxyl groups, are alkyl groups, cycloalkyl groups, alkenyl groups, a phenyl group or a benzyl group, each of which is, optionally, substituted by halogens or cyano groups.
Claim 9
Dependent Claim
24 words
The organosiloxane of claim 5, wherein Y is an alkenyl group, an alkynyl group, a (meth)acryloyl group, a cyano group or a nitro group.
Claim 10
Dependent Claim
23 words
The organosiloxane of claim 5, wherein Y is a (meth) acryloyl group, a vinyl group, a halogen-substituted hydrocarbon group or a cyano group.
Claim 11
Dependent Claim
11 words
The organosiloxane of claim 5, wherein Y is a perfluoroalkyl group.
Claim 12
Dependent Claim
12 words
The organosiloxane of claim 5, wherein Y is a (meth) acryloyl group.
References Cited (Backward Citations)
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