US4233428A
Expired / Lapsed
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Primer compositions for silicone rubber compositions
Assignee: Momentive Performance Materials Japan LLC
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Filing: 1978-12-04
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Granted: 1980-11-11
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Expires: 1998-12-04
Abstract
Abstract A primer composition for silicone rubber compositions comprising an epoxy resin, an amine functional silane, an aminoxy functional silane, or siloxane, a mercapto functional silane, and an organic solvent. Such primer compositions are especially used as primer compositions for aminoxy curing room temperature vulcanizable silicone rubber compositions.
Inventors
- 👤 Isao Endo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:20
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4085; C09; C09D; C09D183/00; C09D183/04; C09D183/08; C08J2367/00; C08J2367/02; C08J2483/00; C08J2483/02; C08J2483/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
219 words
A primer composition for a silicone rubber composition comprising, (a) 100 parts by weight of epoxy resin containing more than 2 radicals expressed by the formula ##STR10## within each molecule; (b) from 50 to 500 parts by weight of a silane containing an amino group expressed by the formula R 1 CH 2 CH 2 CH 2 Si(OR 2 ) 3 wherein R 1 is a nitrogen-containing group selected from the class consisting of substituted or unsubstituted amino groups expressed by Q 2 1 N and Q 2 2 N(CH 2 ) 2 NH wherein Q 1 and Q 2 are groups selected from the class consisting of a hydrogen atom and an alkyl radical respectively, and R 2 is a monovalent hydrocarbon group; (c) from 30 to 500 parts by weight of an organic silicon compound containing the group expressed by the formula R 2 3 NOSi.tbd. wherein R 3 is a group selected from the class consisting of a hydrogen atom and a monovalent hydrocarbon group with no aliphatic unsaturation; (d) from 100 to 1000 parts by weight of a mercapto-containing silane expressed by the formula HS(CH 2 ) a Si(OR 4 ) 3 wherein a has a value of either 2 or 3, and R 4 is a monovalent hydrocarbon group; and (e) an organic solvent.
Claim 2
Dependent Claim
219 words
A primer composition for a silicone rubber composition comprising, (a) 100 parts by weight of epoxy resin containing more than 2 radicals expressed by the formula ##STR10## within each molecule; (b) from 50 to 500 parts by weight of a silane containing an amino group expressed by the formula R 1 CH 2 CH 2 CH 2 Si(OR 2 ) 3 wherein R 1 is a nitrogen-containing group selected from the class consisting of substituted or unsubstituted amino groups expressed by Q 2 1 N and Q 2 2 N(CH 2 ) 2 NH wherein Q 1 and Q 2 are groups selected from the class consisting of a hydrogen atom and an alkyl radical respectively, and R 2 is a monovalent hydrocarbon group; (c) from 30 to 500 parts by weight of an organic silicon compound containing the group expressed by the formula R 2 3 NOSi.tbd. wherein R 3 is a group selected from the class consisting of a hydrogen atom and a monovalent hydrocarbon group with no aliphatic unsaturation; (d) from 100 to 1000 parts by weight of a mercapto-containing silane expressed by the formula HS(CH 2 ) a Si(OR 4 ) 3 wherein a has a value of either 2 or 3, and R 4 is a monovalent hydrocarbon group; and (e) an organic solvent.
Claim 3
Dependent Claim
28 words
The composition of claim 1 wherein epoxy resin (a) is the resin expressed by the general formula, ##STR11## wherein m has a value of between 1 and 15.
Claim 4
Dependent Claim
28 words
The composition of claim 1 wherein epoxy resin (a) is the resin expressed by the general formula, ##STR12## wherein n has a value of between 0 and 3.
Claim 5
Dependent Claim
50 words
The composition of claim 1 wherein the silane containing amino group (b) is the silane expressed by the formula, NH 2 CH 2 CH 2 CH 2 Si(OR 5 ) 3 wherein R 5 is a group selected from the class consisting of a methyl radical and an ethyl radical.
Claim 6
Dependent Claim
33 words
The composition of claim 1 wherein the silane-containing amino group (b) is expressed by the formula H 2 NCH 2 CH 2 NHCH 2 --CH 2 CH 2 Si(OCH 3 ) 3 .
Claim 7
Dependent Claim
19 words
The composition of claim 1 wherein the organic silicon compound (c) is the compound expressed by the formula, ##STR13##
Claim 8
Dependent Claim
13 words
The composition of claim 6 wherein the R 3 is an ethyl radical.
Claim 9
Dependent Claim
26 words
The composition of claim 1 wherein the organic silicon compound (c) is the compound expressed by the formula CH 3 Si(ONR 2 3 ) 3 .
Claim 10
Dependent Claim
28 words
The composition of claim 1 wherein the silane containing the mercapto (d) is expressed by the formula HSCH 2 CH 2 CH 2 Si(OCH 3 ) 3 .
Claim 11
Dependent Claim
223 words
A process for forming a primer composition for silicone rubber compositions comprising mixing (a) 100 parts by weight of epoxy resin containing more than 2 radicals expressed by the formula ##STR14## within each molecule; (b) from 50 to 500 parts by weight of a silane containing an amino group expressed by the formula R 1 CH 2 CH 2 CH 2 Si(OR 2 ) 3 wherein R 1 is a nitrogen-containing group selected from the class consisting of substituted or unsubstituted amino groups expressed by Q 2 1 N and Q 2 2 N(CH 2 ) 2 NH wherein Q 1 and Q 2 are groups selected from the class consisting of a hydrogen atom and an alkyl radical respectively, and R 2 is a monovalent hydrocarbon group; (c) from 30 to 500 parts by weight of an organic silicon compound containing the group expressed by the formula R 2 3 NOSi.tbd. wherein R 3 is a group selected from the class consisting of a hydrogen atom and a monovalent hydrocarbon group with no aliphatic unsaturation; (d) from 100 to 1000 parts by wweight of a mercapto-containing silane expressed by the formula HS(CH 2 ) a Si(OR 4 ) 3 wherein a has a value of either 2 or 3, and R 4 is a monovalent hydrocarbon group; and (e) an organic solvent.
Claim 12
Dependent Claim
223 words
A process for forming a primer composition for silicone rubber compositions comprising mixing (a) 100 parts by weight of epoxy resin containing more than 2 radicals expressed by the formula ##STR14## within each molecule; (b) from 50 to 500 parts by weight of a silane containing an amino group expressed by the formula R 1 CH 2 CH 2 CH 2 Si(OR 2 ) 3 wherein R 1 is a nitrogen-containing group selected from the class consisting of substituted or unsubstituted amino groups expressed by Q 2 1 N and Q 2 2 N(CH 2 ) 2 NH wherein Q 1 and Q 2 are groups selected from the class consisting of a hydrogen atom and an alkyl radical respectively, and R 2 is a monovalent hydrocarbon group; (c) from 30 to 500 parts by weight of an organic silicon compound containing the group expressed by the formula R 2 3 NOSi.tbd. wherein R 3 is a group selected from the class consisting of a hydrogen atom and a monovalent hydrocarbon group with no aliphatic unsaturation; (d) from 100 to 1000 parts by wweight of a mercapto-containing silane expressed by the formula HS(CH 2 ) a Si(OR 4 ) 3 wherein a has a value of either 2 or 3, and R 4 is a monovalent hydrocarbon group; and (e) an organic solvent.
Claim 13
Dependent Claim
19 words
The process of claim 10 wherein the epoxy resin (a) is a resin expressed by the general formula, ##STR15##
Claim 14
Dependent Claim
29 words
The process of claim 10 wherein the epoxy resin (a) is the resin expressed by the general formula, ##STR16## wherein n has a value of between 0 and 3.
Claim 15
Dependent Claim
49 words
The process of claim 10 wherein the silane amino compound (b) is the silane expressed by the formula NH 2 CH 2 CH 2 CH 2 Si(OR 5 ) 3 wherein R 5 is a group selected from the class consisting of a methyl radical and an ethyl radical.
Claim 16
Dependent Claim
32 words
The process of claim 10 wherein the silane-containing amino (b) is expressed by the formula H 2 NCH 2 CH 2 NHCH 2 CH 2 CH 2 Si(OCH 3 ) 3 .
Claim 17
Dependent Claim
19 words
The process of claim 10 wherein the organic silicon compound (c) is the compound expressed by the formula, ##STR17##
Claim 18
Dependent Claim
13 words
The process of claim 15 wherein the R 3 is an ethyl radical.
Claim 19
Dependent Claim
26 words
The process of claim 10 wherein the organic silicon compound (c) is the compound expressed by the formula CH 3 Si(ONR 2 3 ) 3 .
Claim 20
Dependent Claim
29 words
The process of claim 10 wherein the silane containing the mercapto group (d) is expressed by the formula HSCH 2 CH 2 CH 2 Si(OCH 3 ) 3 .
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) | 1983-11-11 | 1984-05-12 | 1984-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-11 | 1988-05-12 | 1988-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-11 | 1992-05-12 | 1992-11-11 | $7700.00 | Window Closed / Lapsed |