US4975139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparation of rubber laminate
Assignee: Zeon Corp
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Filing: 1989-06-22
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Granted: 1990-12-04
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Expires: 2009-06-22
Abstract
Abstract Disclosed is a process for the preparation of a rubber laminate, which comprises bringing an uncured composition comprising a fluororubber and a metal oxide incorporated therein into contact with an uncured composition comprising an epoxy group-containing acrylate rubber and a phosphonium salt of the following general formula incorporated therein: ##STR1## wherein R 1 , R 2 , R 3 and R 4 are selected from the group consisting of hydrocarbon groups having 1 to 20 carbon atoms, secondary and tertiary amino groups substituted with a hydrocarbon group having 1 to 20 carbon atoms and fluoroalkyl groups having 1 to 20 carbon atoms, with the proviso that the case where all of R 1 , R 2 , R 3 and R 4 are secondary or tertiary amino groups or fluoroalkyl groups is excluded, and R 5 stands for a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, and curing them.
Inventors
- 👤 Osamu Sugimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:38
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/14; B32B25/04; B32B25/042; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/49; C08K5/50; C08L; C08L27/00; C08L27/02; C08L27/12; C08L33/00; C08L33/04; C08L33/06; C08L33/08; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1386; Y10T428/139; Y10T428/1393; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
153 words
A process for the preparation of a rubber laminate, which comprises bringing an uncured composition comprising a fluororubber and a metal oxide incorporated therein into contact with an uncured composition comprising an epoxy group-containing acrylate rubber and a phosphonium salt of the following general formula incorporated therein: ##STR4## wherein R 1 , R 2 , R 3 and R 4 are selected from the group consisting of hydrocarbon groups having 1 to 20 carbon atoms, secondary and tertiary amino groups substituted with a hydrocarbon group having 1 to 20 carbon atoms and fluoroalkyl groups having 1 to 20 carbon atoms, with the proviso that the case where all of R 1 , R 2 , R 3 and R 4 are secondary or tertiary amino groups or fluoroalkyl groups is excluded, and R5 stands for a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, and curing the uncured compositions.
Claim 2
Dependent Claim
153 words
A process for the preparation of a rubber laminate, which comprises bringing an uncured composition comprising a fluororubber and a metal oxide incorporated therein into contact with an uncured composition comprising an epoxy group-containing acrylate rubber and a phosphonium salt of the following general formula incorporated therein: ##STR4## wherein R 1 , R 2 , R 3 and R 4 are selected from the group consisting of hydrocarbon groups having 1 to 20 carbon atoms, secondary and tertiary amino groups substituted with a hydrocarbon group having 1 to 20 carbon atoms and fluoroalkyl groups having 1 to 20 carbon atoms, with the proviso that the case where all of R 1 , R 2 , R 3 and R 4 are secondary or tertiary amino groups or fluoroalkyl groups is excluded, and R5 stands for a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, and curing the uncured compositions.
Claim 3
Dependent Claim
34 words
A process according to claim 1, wherein the fluororubber is one selected from the group consisting of rubbery polymers of fluorinated unsaturated monomers and rubbery copolymers of said unsaturated monomers with other copolymerizable monomers
Claim 4
Dependent Claim
28 words
A process according to claim 1, wherein the fluororubber is one selected from the group consisting of a vinylidene fluoride/hexafluoropropene copolymer rubber and a vinylidene fluoride/hexafluoropropene/tetrafluoroethylene terpolymer rubber.
Claim 5
Dependent Claim
40 words
A process according to claim 1, wherein the epoxy group-containing acrylate rubber is a rubbery copolymer of an epoxy group-containing monomer with at least one monomer selected from the group consisting of copolymerizable vinyl-terminated monomers and copolymerizable vinylidene group-containing monomers.
Claim 6
Dependent Claim
36 words
A process according to claim 1, wherein the metal oxide is at least one oxide selected from the group consisting of CaO, MgO, PbO, Pb 3 O 4 , BaO and Al 2 O 3 .
Claim 7
Dependent Claim
27 words
A process according to claim 1, wherein the hydrocarbon group is a member selected from the group consisting of alkyl, cycloalkyl, aralkyl, aryl and substituted aryl groups.
Claim 8
Dependent Claim
27 words
A process according to claim 1, wherein the secondary amino or tertiary amino group is a member selected from the group consisting of alkylamino and arylamino groups.
Claim 9
Dependent Claim
29 words
A process according to claim 1, wherein the amount of the metal oxide used is 1 to 30 parts by weight per 100 parts by weight of the fluororubber.
Claim 10
Dependent Claim
32 words
A process according to claim 1, wherein the amount of the phosphonium salt used is 1 to 10 parts by weight per 100 parts by weight of the epoxy group-containing acrylate rubber.
References Cited (Backward Citations)
US4343861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-03 | 1994-06-04 | 1994-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-03 | 1998-06-04 | 1998-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-03 | 2002-06-04 | 2002-12-04 | $7700.00 | Window Closed / Lapsed |