US4780338A
Expired / Lapsed
US
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Solventless silicone coating composition
Assignee: General Electric Co
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Filing: 1987-03-26
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Granted: 1988-10-25
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Expires: 2007-03-26
Abstract
Abstract Solventless silicone coating compositions are disclosed which contain a fluid silicone resin and a polydiorganosiloxane fluid.
Inventors
- 👤 William T. Saad
- 👤 George F. Medford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:29
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04; Y; Y10; Y10S; Y10S528/00; Y10S528/901; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
127 words
A solventless composition comprising: (a) 100 parts by weight of at least one silicone resin having alkoxy or acyloxy functional groups, a viscosity of from about 5 to about 200,000 centipoise at 25° C., and the general formula: R.sub.a SiO.sub.(4-a)/2 wherein R is a substituted or unsubstituted hydrocarbon radical having from about 1 to about 10 carbon atoms and "a" is on average from about 0.75 to about 1.9, (b) from about 5 to about 2000 parts by weight of at least one polydiorganosiloxane fluid having a viscosity between about 5 and 5,000 centipoise at 25° C. and having functional groups which will react with the alkoxy or acyloxy functional groups of the silicone resin, and (c) an effective amount of condensation catalyst to cure the composition.
Claim 2
Dependent Claim
127 words
A solventless composition comprising: (a) 100 parts by weight of at least one silicone resin having alkoxy or acyloxy functional groups, a viscosity of from about 5 to about 200,000 centipoise at 25° C., and the general formula: R.sub.a SiO.sub.(4-a)/2 wherein R is a substituted or unsubstituted hydrocarbon radical having from about 1 to about 10 carbon atoms and "a" is on average from about 0.75 to about 1.9, (b) from about 5 to about 2000 parts by weight of at least one polydiorganosiloxane fluid having a viscosity between about 5 and 5,000 centipoise at 25° C. and having functional groups which will react with the alkoxy or acyloxy functional groups of the silicone resin, and (c) an effective amount of condensation catalyst to cure the composition.
Claim 3
Dependent Claim
44 words
The composition of claim 1 wherein said silicone resin has the general formula: R.sub.a SiO.sub.(4-a)/2 wherein R is a substituted or unsubstituted hydrocarbon radical having from about 1 to about 10 carbon atoms and "a" is on average from about 0.9 to about 1.5.
Claim 4
Dependent Claim
22 words
The composition of claim 1 wherein said silicone resin is a copolymer having R 2 SiO 2/2 and R SiO 3/2 units.
Claim 5
Dependent Claim
38 words
The composition of claim 1 wherein said silicone resin contains from about 0 to about 10% by weight hydroxy functional groups and up to about 30% by weight molar equivalent methoxy groups of alkoxy or acyloxy functional groups.
Claim 6
Dependent Claim
40 words
The composition of claim 1 wherein said silicone resin contains from about 0 to about 5% by weight hydroxy functional groups and from about 10 to about 25% by weight molar equivalent methoxy groups of alkoxy or acyloxy functional groups.
Claim 7
Dependent Claim
22 words
The composition of claim 1 wherein said silicone resin has sufficient alkoxy or acyloxy functionality to control viscosity within the stated range.
Claim 8
Dependent Claim
30 words
The composition of claim 4 wherein said silicone resin has a sufficient ratio of alkoxy or acyloxy functional groups to hydroxy functional groups to control viscosity within the stated range.
Claim 9
Dependent Claim
36 words
The composition of claim 4 wherein said silicone resin has a sufficient ratio of alkoxy or acyloxy functional groups to hydroxy functional groups and a sufficiently low molecular weight to control viscosity within the stated range.
Claim 10
Dependent Claim
15 words
The composition of claim 1 wherein said silicone resin and said polydiorganosiloxane fluid are compatible.
Claim 11
Dependent Claim
25 words
The composition of claim 1 wherein the silicone resin and polydiorganosiloxane fluid have substantially the same organo substituents to render said resin and fluid compatible.
Claim 12
Dependent Claim
53 words
The composition of claim 1 wherein said polydiorganosiloxane fluid has the general formula: ##STR2## wherein R is a substituted or unsubstituted hydrocarbon radical of from 1 to about 10 carbon atoms; X is selected from the group consisting of hydroxy, alkoxy and acyloxy; and n is an integer to give the stated viscosity.
Claim 13
Dependent Claim
21 words
The composition of claim 1, wherein said resin has a viscosity between about 25 and about 2500 centipoise at 25° C.
Claim 14
Dependent Claim
30 words
The composition of claim 1 wherein there is present for each 100 parts by weight said silicone resin, from about 50 to about 1000 parts by weight said polydiorganosiloxane fluid.
Claim 15
Dependent Claim
13 words
The composition of claim 1 further including pigments, reinforcing agents and/or UV screens.
Claim 16
Independent Claim
145 words
A method for coating substrates comprising: (a) applying a solventless composition comprising: (i) 100 parts by weight of at least one silicone resin having alkoxy or acyloxy functional groups, a viscosity of from about 10 to about 200,000 centipoise at 25° C., and the general formula: R.sub.a SiO.sub.(4-a)/2 wherein R is a substituted or unsubstituted hydrocarbon radical having from about 1 to about 10 carbon atoms and "a" is on average from about 0.75 to about 1.9, (ii) from about 5 to about 2000 parts by weight of at least one polydiorganosiloxane fluid having a viscosity between about 5 and 5,000 centipoise at 25° C. and having functional groups which will react with the alkoxy or acyloxy functional groups of the silicone resin, and (iii) an effective amount of condensation catalyst to cure the composition; and (b) curing said mixture to a substrate by heating.
Claim 17
Independent Claim
145 words
A method for coating substrates comprising: (a) applying a solventless composition comprising: (i) 100 parts by weight of at least one silicone resin having alkoxy or acyloxy functional groups, a viscosity of from about 10 to about 200,000 centipoise at 25° C., and the general formula: R.sub.a SiO.sub.(4-a)/2 wherein R is a substituted or unsubstituted hydrocarbon radical having from about 1 to about 10 carbon atoms and "a" is on average from about 0.75 to about 1.9, (ii) from about 5 to about 2000 parts by weight of at least one polydiorganosiloxane fluid having a viscosity between about 5 and 5,000 centipoise at 25° C. and having functional groups which will react with the alkoxy or acyloxy functional groups of the silicone resin, and (iii) an effective amount of condensation catalyst to cure the composition; and (b) curing said mixture to a substrate by heating.
Claim 18
Dependent Claim
44 words
The method of claim 15 wherein said silicone resin has the general formula: R.sub.a SiO.sub.(4-a)/2 wherein R is a substituted or unsubstituted hydrocarbon radical having from about 1 to about 10 carbon atoms and "a" is on average from about 0.9 to about 1.5.
Claim 19
Dependent Claim
22 words
The method of claim 15 wherein said silicone resin is a copolymer having R 2 SiO 2/2 and R SiO 3/2 units.
Claim 20
Dependent Claim
38 words
The method of claim 15 wherein said silicone resin contains from about 0 to about 10% by weight hydroxy functional groups and up to about 30% by weight molar equivalent methoxy groups of alkoxy or acyloxy functional groups.
Claim 21
Dependent Claim
40 words
The method of claim 15 wherein said silicone resin contains from about 0 to about 5% by weight hydroxy functional groups and from about 10 to about 25% by weight molar equivalent methoxy groups of alkoxy or acyloxy functional groups.
Claim 22
Dependent Claim
22 words
The method of claim 15 wherein said silicone resin has sufficient alkoxy or acyloxy functionality to control viscosity within the stated range.
Claim 23
Dependent Claim
30 words
The composition of claim 19 wherein said silicone resin has a sufficient ratio of alkoxy or acyloxy functional groups to hydroxy functional groups to control viscosity within the stated range.
Claim 24
Dependent Claim
36 words
The method of claim 18 wherein said silicone resin has a sufficient ratio of alkoxy or acyloxy functional groups to hydroxy functional groups and a sufficiently low molecular weight to control viscosity within the stated range.
Claim 25
Dependent Claim
15 words
The method of claim 15 wherein said silicone resin and said polydiorganosiloxane fluid are compatible.
Claim 26
Dependent Claim
25 words
The method of claim 15 wherein the silicone resin and polydiorganosiloxane fluid have substantially the same organo substituents to render said resin and fluid compatible.
Claim 27
Dependent Claim
53 words
The method of claim 15 wherein said polydiorganosiloxane fluid has the general formula: ##STR3## wherein R is a substituted or unsubstituted hydrocarbon radical of from 1 to about 10 carbon atoms; X is selected from the group consisting of hydroxy, alkoxy and acyloxy; and n is an integer to give the stated viscosity.
Claim 28
Dependent Claim
21 words
The method of claim 15, wherein said resin has a viscosity between about 25 and about 2500 centipoise at 25° C.
Claim 29
Dependent Claim
30 words
The method of claim 15 wherein there is present for each 100 parts by weight said silicone resin, from about 50 to about 1000 parts by weight said polydiorganosiloxane fluid.
Claim 30
Dependent Claim
13 words
The method of claim 15 further including pigments, reinforcing agents and/or UV screens.
Claim 31
Dependent Claim
16 words
The method of claim 15 wherein said composition is heated directly to cure temperature as applied.
Claim 32
Dependent Claim
14 words
The method of claim 15 wherein said composition is applied to a hot substrate.
Claim 33
Dependent Claim
140 words
An article comprising a substrate having on the surface thereof a coating comprising the reaction products of (a) 100 parts by weight of at least one silicone resin having alkoxy or acyloxy functional groups, a viscosity of from about 10 to about 200,000 centipoise at 25° C., and the general formula: R.sub.a SiO.sub.(4-a)/2 wherein R is a substituted or unsubstituted hydrocarbon radical having from about 1 to about 10 carbon atoms and "a" is on average from about 0.75 to about 1.9, (b) from about 5 to about 2000 parts by weight of at least one polydiorganosiloxane fluid having a viscosity between about 5 and 5,000 centipoise at 25° C. and having functional groups which will react with the alkoxy or acyloxy functional groups of the silicone resin, and (c) an effective amount of condensation catalyst to cure the composition.
Claim 34
Dependent Claim
140 words
An article comprising a substrate having on the surface thereof a coating comprising the reaction products of (a) 100 parts by weight of at least one silicone resin having alkoxy or acyloxy functional groups, a viscosity of from about 10 to about 200,000 centipoise at 25° C., and the general formula: R.sub.a SiO.sub.(4-a)/2 wherein R is a substituted or unsubstituted hydrocarbon radical having from about 1 to about 10 carbon atoms and "a" is on average from about 0.75 to about 1.9, (b) from about 5 to about 2000 parts by weight of at least one polydiorganosiloxane fluid having a viscosity between about 5 and 5,000 centipoise at 25° C. and having functional groups which will react with the alkoxy or acyloxy functional groups of the silicone resin, and (c) an effective amount of condensation catalyst to cure the composition.
Claim 35
Dependent Claim
44 words
The article of claim 31 wherein said silicone resin has the general formula: R.sub.a SiO.sub.(4-a)/2 wherein R is a substituted or unsubstituted hydrocarbon radical having from about 1 to about 10 carbon atoms and "a" is on average from about 0.9 to about 1.5.
Claim 36
Dependent Claim
21 words
The article of claim 31 wherein said silicone resin is a copolymer having R 2 SiO 2/2 and RSiO 3/2 units.
Claim 37
Dependent Claim
38 words
The article of claim 31 wherein said silicone resin contains from about 0 to about 10% by weight hydroxy functional groups and up to about 30% by weight molar equivalent methoxy groups of alkoxy or acyloxy functional groups.
Claim 38
Dependent Claim
40 words
The article of claim 31 wherein said silicone resin contains from about 0 to about 5% by weight hydroxy functional groups and from about 10 to about 25% by weight molar equivalent methoxy groups of alkoxy or acyloxy functional groups.
Claim 39
Dependent Claim
22 words
The article of claim 31 wherein said silicone resin has sufficient alkoxy or acyloxy functionality to control viscosity within the stated range.
Claim 40
Dependent Claim
30 words
The composition of claim 34 wherein said silicone resin has a sufficient ratio of alkoxy or acyloxy functional groups to hydroxy functional groups to control viscosity within the stated range.
Claim 41
Dependent Claim
36 words
The article of claim 34 wherein said silicone resin has a sufficient ratio of alkoxy or acyloxy functional groups to hydroxy functional groups and a sufficiently low molecular weight to control viscosity within the stated range.
Claim 42
Dependent Claim
15 words
The article of claim 31 wherein said silicone resin and said polydiorganosiloxane fluid are compatible.
Claim 43
Dependent Claim
25 words
The article of claim 31 wherein the silicone resin and polydiorganosiloxane fluid have substantially the same organo substituents to render said resin and fluid compatible.
Claim 44
Dependent Claim
53 words
The article of claim 31 wherein said polydiorganosiloxane fluid has the general formula: ##STR4## wherein R is a substituted or unsubstituted hydrocarbon radical of from 1 to about 10 carbon atoms; X is selected from the group consisting of hydroxy, alkoxy and acyloxy; and n is an integer to give the stated viscosity.
Claim 45
Dependent Claim
21 words
The article of claim 31, wherein said resin has a viscosity between about 25 and about 2500 centipoise at 25° C.
Claim 46
Dependent Claim
30 words
The article of claim 31 wherein there is present for each 100 parts by weight said silicone resin, from about 50 to about 1000 parts by weight said polydiorganosiloxane fluid.
Claim 47
Dependent Claim
13 words
The article of claim 31 further including pigments, reinforcing agents and/or UV screens.
Claim 48
Dependent Claim
19 words
A article of claim 31 wherein said coating has a thickness of from about 5 to about 125 mils.
Claim 49
Dependent Claim
23 words
The article of claim 31 wherein said substrate is selected from the group consisting of glass, aluminum, copper, steel and high temperature plastics.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-25 | 1992-04-25 | 1992-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-25 | 1996-04-25 | 1996-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-25 | 2000-04-25 | 2000-10-25 | $7700.00 | Window Closed / Lapsed |