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US5049618A
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Vulcanizable rubber compositions containing hydroxy aryl substituted monomaleimides
Assignee: Goodyear Tire and Rubber Co
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Filing: 1989-09-05
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Granted: 1991-09-17
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Expires: 2009-09-05
Abstract
Abstract The present invention relates to vulcanizable rubber compositions containing a methylene donor and a hydroxy-aryl substituted monomaleimide. The substituted monomaleimides may be used as a replacement for resorcinol and function as a methylene acceptor. The vulcanizable rubber compositions exhibit improved rubber/reinforcement interaction for increased adhesion and tear in rubber. These vulcanizable rubber compositions also contain a vulcanizing agent.
Inventors
- 👤 Lawson G. Wideman
- 👤 Paul H. Sandstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08L; C08L21/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
30 words
A vulcanizable rubber composition comprising a sulfur vulcanizable rubber, a vulcanizing agent and the reaction product of (a) a methylene donor and (b) a methylene acceptor of the formula: ##STR4##
Claim 2
Dependent Claim
30 words
A vulcanizable rubber composition comprising a sulfur vulcanizable rubber, a vulcanizing agent and the reaction product of (a) a methylene donor and (b) a methylene acceptor of the formula: ##STR4##
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein the methylene acceptor is: ##STR5##
Claim 4
Dependent Claim
11 words
The composition of claim 1 wherein the methylene acceptor is: ##STR6##
Claim 5
Dependent Claim
34 words
The composition of claim 1 wherein the rubber is selected from the group consisting of natural rubber, polychloroprene, polybutadiene, polyisoprene, butyl rubber, EPDM, styrene/butadiene copolymers, terpolymers of acrylonitrile, butadiene and styrene and blends thereof.
Claim 6
Dependent Claim
30 words
The composition of claim 1 wherein the methylene donor is selected from the group consisting of hexamethylene tetramine, hexamethoxymethyl melamine, lauryloxymethyl pyridinium chloride, ethyloxymethyl pyridinium chloride, trioxan hexamethylolmelamine and paraformaldehyde.
Claim 7
Dependent Claim
67 words
The composition according to claim 1 wherein the methylene donor is selected from the general formula: ##STR7## wherein X is an alkyl having from 1 to 8 carbon atoms, R, R 1 ,R 2 , R 3 and R 4 are individually selected from the group consisting of hydrogen, an alkyl having from 1 to 8 carbon atoms, the group --CH 2 OX or their condensation products.
Claim 8
Dependent Claim
26 words
The composition of claim 1 wherein the methylene donor is selected from the group consisting of hexakis(methoxymethyl)melamine, N,N',N"-trimethyl/N,N',N"-trimethylolmelamine, hexamethylolmelamine, N,N',N"-dimethylolmelamine, N-methylolmelamine, N,N'-dimethylolmelamine, N,N',N"tris(methoxymethyl) melamine and N,N',N"tributyl-N,N',N"-trimethylolmelamine.
Claim 9
Dependent Claim
26 words
The composition of claim 1 wherein the weight ratio of methylene donor to the hydroxy aryl substituted monomaleimide may range of from 1:10 to about 10:1.
Claim 10
Dependent Claim
25 words
The composition of claim 8 wherein the weight ratio of methylene donor to the hydroxyl aryl monomaleimide may range from about 1:3 to about 3:1.
Claim 11
Dependent Claim
28 words
The composition of claim 1 wherein the sulfur vulcanizing agent is selected from the group consisting of elemental sulfur, an amine disulfide, polymeric polysulfide or sulfur olefin adduct.
Claim 12
Dependent Claim
18 words
The composition of claim 10 wherein the sulfur vulcanizing agent ranges from about 0.1 to about 5 phr.
Claim 13
Dependent Claim
31 words
The composition of claim 1 wherein the amount of the hydroxy aryl substituted monomaleimide that is included in the sulfur vulcanizable rubber may range from about 0.1 to about 50 phr.
Claim 14
Dependent Claim
23 words
The composition of claim 12 wherein the amount of the hydroxy aryl substituted monomaleimide may range from about 0.5 to about 5.0 phr.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-16 | 1995-03-18 | 1995-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-16 | 1999-03-18 | 1999-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-16 | 2003-03-18 | 2003-09-17 | $7700.00 | Window Closed / Lapsed |