Patent EP0429928A2 successfully refreshed from Google Patents.
EP0429928A2
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EP
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Polar aprotic catalysts for formation of fluorosilicone fluids
Assignee: General Electric Co
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Filing: 1990-11-10
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Granted: —
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Expires: 2010-11-10
Abstract
Abstract There is provided a silicone composition comprising: (A) A silanol endstopped fluid represented by the general formula: wherein R is selected from the class consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals and "x" is from about 3 to about 10; (B) a catalyst comprising an aprotic solvent; and (C) water.
Inventors
- 👤 Edwin Robert Evans
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 20:17
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/08; C08G77/22; C08G77/24
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
50 words
A silicone composition comprising: (A) a silanol endstopped fluid represented by the general formula: wherein R is selected from the class consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals and "x" is from about 3 to about 10; (B) a catalyst comprising an aprotic solvent; and (C) water.
Claim 2
Dependent Claim
50 words
A silicone composition comprising: (A) a silanol endstopped fluid represented by the general formula: wherein R is selected from the class consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals and "x" is from about 3 to about 10; (B) a catalyst comprising an aprotic solvent; and (C) water.
Claim 3
Dependent Claim
31 words
The silicone composition of Claim 1 wherein each R radical in component (A) is selected from C 1-8 alkyl radicals, C 1 -ε haloalkyl radicals, and C 1 -8 cycloalkyl radicals.
Claim 4
Dependent Claim
43 words
The silicone composition of Claim 1 wherein each R radical is selected from alkyl radicals of one to eight carbon atoms and a monovalent group represented by the formula: R 1 CH 2 CH 2 - where R 1 is a perfluoroalkyl radical.
Claim 5
Dependent Claim
20 words
The silicone composition of Claim 1 wherein each R radical is selected from the group consisting of methyl and trifluoropropyl.
Claim 6
Dependent Claim
11 words
The silicone composition of Claim 1 further comprising component (D) hexamethyldisilazane.
Claim 7
Dependent Claim
11 words
The silicone composition of Claim 1 further comprising component (D) divinyltetramethyldisilazane.
Claim 8
Dependent Claim
40 words
A silicone composition comprising: (A) a cyclic trimer represented by the general formula: wherein R is selected from the class consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals; (B) a catalyst comprising an aprotic solvent; and (C) water.
Claim 9
Dependent Claim
40 words
A silicone composition comprising: (A) a cyclic trimer represented by the general formula: wherein R is selected from the class consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals; (B) a catalyst comprising an aprotic solvent; and (C) water.
Claim 10
Dependent Claim
32 words
The silicone composition of Claim 7 wherein each R radical in component (A) is selected from C 1 -8 alkyl radicals, C 1 -8 haloalkyl radicals, and C 1 -8 cycloalkyl radicals.
Claim 11
Dependent Claim
41 words
The silicone composition of Claim 7 wherein each R radical is selected from alkyl radicals of one to eight carbon atoms and a monovalent group represented by the formula: R'CH 2 CH 2 - where R 1 is a perfluoroalkyl radical.
Claim 12
Dependent Claim
20 words
The silicone composition of Claim 7 wherein each R radical is selected from the group consisting of methyl and trifluoropropyl.
Claim 13
Dependent Claim
11 words
The silicone composition of Claim 7 further comprising component (D) hexamethyldisilazane.
Claim 14
Dependent Claim
11 words
The silicone composition of Claim 7 further comprising component (D) divinyltetramethyldisilazane.
Claim 15
Dependent Claim
63 words
A process for producing silanol terminated, fluorosubstituted polydiorganosiloxanes comprising reacting in the presence of an aprotic solvent with no other known catalysts a composition comprising: (A) a silanol endstopped fluid represented by the general formula: wherein R is selected from the class consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals and "x" is from about 3 to about 10; (B) water.
Claim 16
Dependent Claim
63 words
A process for producing silanol terminated, fluorosubstituted polydiorganosiloxanes comprising reacting in the presence of an aprotic solvent with no other known catalysts a composition comprising: (A) a silanol endstopped fluid represented by the general formula: wherein R is selected from the class consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals and "x" is from about 3 to about 10; (B) water.
Claim 17
Dependent Claim
65 words
A process for producing silanol terminated, fluorosubstituted polydiorganosiloxanes having a viscosity of 300 to 4,000 centipoise at 25 ° C comprising reacting in the presence of an aprotic solvent with no other known catalysts a composition comprising: (A) a cyclic trimer represented by the general formula: wherein R is selected from the class consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals; (B) water.
Claim 18
Dependent Claim
65 words
A process for producing silanol terminated, fluorosubstituted polydiorganosiloxanes having a viscosity of 300 to 4,000 centipoise at 25 ° C comprising reacting in the presence of an aprotic solvent with no other known catalysts a composition comprising: (A) a cyclic trimer represented by the general formula: wherein R is selected from the class consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals; (B) water.
References Cited (Backward Citations)
No citation records indexed.
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