US4378389A
Expired / Lapsed
US
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Silicone release coating and lubricating compositions and methods
Assignee: Momentive Performance Materials Japan LLC
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Filing: 1981-02-25
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Granted: 1983-03-29
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Expires: 2001-02-25
Abstract
Abstract A silicone base release or lubricating agent is disclosed which is comprised of the reaction product of a silanol-containing polydiorganosiloxane fluid with a first reaction product of epoxy or glycidoxy functional silanes and aminofunctional silanes.
Inventors
- 👤 Kazo Maruyama
- 👤 Shuhei Kosaka
- 👤 Akitsugu Kurita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:04
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/10; C08; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/26; C09D183/04; C09D183/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
273 words
A method of imparting a release or lubricating property to a surface of a substrate, which comprises the steps of coating on the surface of the substrate a composition comprising a reaction product of (1) 80 to 99.9% by weight of a polydiorganosiloxane having a viscosity of20 to 1,000,000 centistokes as measured at 25° C. and containing therein at least one silanol group per molecule with (2) 0.1 to 20% by weight of a reaction product of (A) an amino group-containing silane represented by the general formula: ##STR5## wherein Q 1 represents a monovalent group selected from the group consisting of hydrogen atom, --CH 3 , --CH 2 CH 2 ,NH 2 and --CH 2 CH 2 NHCH 2 CH 2 NH 2 , R 1 represents a divalent hydrocarbon group having 1 to 4 carbon atoms, R 2 and R 3 stand for a monovalent hydrocarbon group having 1 to 4 carbon atoms, and a is 0 or 1, with (B) an epoxy group-containing silane represented by the following general formula: ##STR6## wherein Q 2 represents an epoxy group-containing group selected from the group consisting of glycidoxyl and epoxycyclohexyl groups, R 4 represents a divalent hydrocarbon group having 2 to 4 carbon atoms, R 5 and R 6 stand for a monovalent hydrocarbon group having 1 to 4 carbon atoms, and b is 0 or 1 wherein said reaction product is diluted with inert solvent to provide a silicone content of less than 10% by weight, coating a film on the surface of the substrate; and curing said film thereby imparting a release or lubricating property to the surface of the substrate.
Claim 2
Independent Claim
273 words
A method of imparting a release or lubricating property to a surface of a substrate, which comprises the steps of coating on the surface of the substrate a composition comprising a reaction product of (1) 80 to 99.9% by weight of a polydiorganosiloxane having a viscosity of20 to 1,000,000 centistokes as measured at 25° C. and containing therein at least one silanol group per molecule with (2) 0.1 to 20% by weight of a reaction product of (A) an amino group-containing silane represented by the general formula: ##STR5## wherein Q 1 represents a monovalent group selected from the group consisting of hydrogen atom, --CH 3 , --CH 2 CH 2 ,NH 2 and --CH 2 CH 2 NHCH 2 CH 2 NH 2 , R 1 represents a divalent hydrocarbon group having 1 to 4 carbon atoms, R 2 and R 3 stand for a monovalent hydrocarbon group having 1 to 4 carbon atoms, and a is 0 or 1, with (B) an epoxy group-containing silane represented by the following general formula: ##STR6## wherein Q 2 represents an epoxy group-containing group selected from the group consisting of glycidoxyl and epoxycyclohexyl groups, R 4 represents a divalent hydrocarbon group having 2 to 4 carbon atoms, R 5 and R 6 stand for a monovalent hydrocarbon group having 1 to 4 carbon atoms, and b is 0 or 1 wherein said reaction product is diluted with inert solvent to provide a silicone content of less than 10% by weight, coating a film on the surface of the substrate; and curing said film thereby imparting a release or lubricating property to the surface of the substrate.
Claim 3
Dependent Claim
16 words
A method as in claim 1 wherein the substrate is a sill for a sliding door.
Claim 4
Dependent Claim
16 words
A method as in claim 1 wherein the surface to be coated is a non-smooth surface.
Claim 5
Dependent Claim
18 words
A method as in claim 3 wherein said surface of a substrate is a surface of a fastener.
Claim 6
Dependent Claim
31 words
A method as in claim 1 wherein said polydiorganosiloxane of component 1 is comprised of 10 to 80% by weight of a polydiorganosiloxane having one end blocked by a silanol group.
Claim 7
Dependent Claim
203 words
A silicone releasing or lubricating composition comprising a reaction product of (1) 80 to 99.9% by weight of a polydiorganosiloxane having a viscosity of 20 to 1,000,000 centistokes as measured at 25° C. and containing at least one silanol group per molecule with (2) 0.1 to 20% by weight of a reaction product of (A) an amino group-containing silane represented by the following general formula: ##STR7## wherein Q 1 represents a monovalent group selected from the group consisting of hydrogen atom, --CH 3 , --CH 2 CH 2 NH 2 and --CH 2 CH 2 NHCH 2 CH 2 NH 2 , R 1 represents a divalent hydrocarbon group having 1 to 4 carbon atoms, R 2 and R 3 represent a monovalent hydrocarbon group having 1 to 4 carbon atoms, and a is 0 or 1, with (B) an epoxy group-containing silane represented by the following general formula: ##STR8## wherein Q 2 represents an epoxy group-containing group selected from the group consisting of glycidoxyl and epoxycyclohexyl groups, R 4 represents a divalent hydrocarbon group having 2 to 4 carbon atoms, R 5 and R 6 represents a monovalent hydrocarbon group having 1 to 4 carbon atoms, and b is 0 or 1.
Claim 8
Dependent Claim
203 words
A silicone releasing or lubricating composition comprising a reaction product of (1) 80 to 99.9% by weight of a polydiorganosiloxane having a viscosity of 20 to 1,000,000 centistokes as measured at 25° C. and containing at least one silanol group per molecule with (2) 0.1 to 20% by weight of a reaction product of (A) an amino group-containing silane represented by the following general formula: ##STR7## wherein Q 1 represents a monovalent group selected from the group consisting of hydrogen atom, --CH 3 , --CH 2 CH 2 NH 2 and --CH 2 CH 2 NHCH 2 CH 2 NH 2 , R 1 represents a divalent hydrocarbon group having 1 to 4 carbon atoms, R 2 and R 3 represent a monovalent hydrocarbon group having 1 to 4 carbon atoms, and a is 0 or 1, with (B) an epoxy group-containing silane represented by the following general formula: ##STR8## wherein Q 2 represents an epoxy group-containing group selected from the group consisting of glycidoxyl and epoxycyclohexyl groups, R 4 represents a divalent hydrocarbon group having 2 to 4 carbon atoms, R 5 and R 6 represents a monovalent hydrocarbon group having 1 to 4 carbon atoms, and b is 0 or 1.
Claim 9
Dependent Claim
27 words
A composition as in claim 6, wherein 10 to 80% by weight of the polydiorganosiloxane (1) is a polydiorganosiloxane having one end blocked by a silanol group.
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) | 1986-03-28 | 1986-09-27 | 1987-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-28 | 1990-09-27 | 1991-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-28 | 1994-09-27 | 1995-03-29 | $7700.00 | Window Closed / Lapsed |