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US5612418A
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US
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Peroxide-cured blends of polyacrylates and partially hydrogenated nitrile rubbers
Assignee: Zeon Chemical LP
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Filing: 1996-01-18
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Granted: 1997-03-18
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Expires: 2016-01-18
Abstract
Abstract Blends of a polyacrylate elastomer with a partially hydrogenated rubber, when peroxide-cured, provide a product which is excellent in resistance to degradation by heat or contact with oil, and which is particularly suitable for making belts, hoses, gaskets and the like for use in automobile engines.
Inventors
- 👤 Paul E. Manley
- 👤 Richard J. Flecksteiner
- 👤 Michael E. Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:38
CPC Classifications
C; C08; C08L; C08L15/00; C08L15/005; C08K; C08K5/00; C08K5/04; C08K5/14; C08L33/00; C08L33/04; C08L33/06; C08L33/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
102 words
A peroxide-cured blend consisting essentially of: 10 to 90 parts by weight of a polyacrylate elastomer comprising at least 10 mole % of the structural unit ##STR8## wherein R 1 is a C 4-8 alkyl group; up to 30 mole % of the structural unit ##STR9## wherein R 2 is an alkoxyalkyl group containing 2-12 carbon atoms; and the balance to a total of 100 mole % of the structural unit ##STR10## wherein R 3 is a C 1-3 alkyl group; and 9- 10parts by weight of a partially hydrogenated nitrile rubber having a degree of unsaturation of from 0.1 to 20%.
Claim 2
Dependent Claim
102 words
A peroxide-cured blend consisting essentially of: 10 to 90 parts by weight of a polyacrylate elastomer comprising at least 10 mole % of the structural unit ##STR8## wherein R 1 is a C 4-8 alkyl group; up to 30 mole % of the structural unit ##STR9## wherein R 2 is an alkoxyalkyl group containing 2-12 carbon atoms; and the balance to a total of 100 mole % of the structural unit ##STR10## wherein R 3 is a C 1-3 alkyl group; and 9- 10parts by weight of a partially hydrogenated nitrile rubber having a degree of unsaturation of from 0.1 to 20%.
Claim 3
Dependent Claim
18 words
A peroxide-cured blend according to claim 1, comprising 20 to 30 mole % of the structural unit ##STR11##
Claim 4
Dependent Claim
21 words
A peroxide-cured blend according to claim 1, wherein R 1 is n-butyl, R 2 is methoxyethyl and R 3 is ethyl.
Claim 5
Dependent Claim
110 words
A peroxide-cured blend consisting essentially of: 10 to 90 parts by weight of a polyacrylate elastomer comprising at least 10 mole % of the structural unit ##STR12## wherein R 1 is a C 4-8 alkyl group; up to 30 mole % of the structural unit ##STR13## wherein R 2 is an alkoxylakyl group containing 2-12 carbon atoms; 1to 10 mole % of the structural unit ##STR14## and the balance to a total of 100 mole % of the structural unit ##STR15## wherein R 3 is a C 1-3 alkyl group; and 10to 90 parts by weight of a hydrogenated nitrile rubber having a degree of unsaturation of 1 to 20%.
Claim 6
Dependent Claim
110 words
A peroxide-cured blend consisting essentially of: 10 to 90 parts by weight of a polyacrylate elastomer comprising at least 10 mole % of the structural unit ##STR12## wherein R 1 is a C 4-8 alkyl group; up to 30 mole % of the structural unit ##STR13## wherein R 2 is an alkoxylakyl group containing 2-12 carbon atoms; 1to 10 mole % of the structural unit ##STR14## and the balance to a total of 100 mole % of the structural unit ##STR15## wherein R 3 is a C 1-3 alkyl group; and 10to 90 parts by weight of a hydrogenated nitrile rubber having a degree of unsaturation of 1 to 20%.
Claim 7
Dependent Claim
18 words
A peroxide-cured blend according to claim 4, comprising 20 to 30 mole % of the structural unit ##STR16##
Claim 8
Dependent Claim
21 words
A peroxide-cured blend according to claim 4, wherein R 1 is n-butyl, R 2 is methoxyethyl and R 3 is ethyl.
Claim 9
Dependent Claim
109 words
A peroxide-curable composition consisting essentially of a blend of: 10 to 90 parts by weight of a polyacrylate elastomer comprising at least 10 mole % of the structural unit ##STR17## wherein R 1 is a C 4-8 alkyl group; up to 30 mole % of the structural unit ##STR18## wherein R 2 is an alkoxyalkyl group containing 2-12 carbon atoms; and the balance to a total of 100 mole % of the structural unit ##STR19## wherein R 3 is a C 1-3 alkyl group; 90to 10 parts by weight of a hydrogenated nitrile rubber having a degree of unsaturation of from 0.1 to 20%; and a peroxide curing system.
Claim 10
Dependent Claim
109 words
A peroxide-curable composition consisting essentially of a blend of: 10 to 90 parts by weight of a polyacrylate elastomer comprising at least 10 mole % of the structural unit ##STR17## wherein R 1 is a C 4-8 alkyl group; up to 30 mole % of the structural unit ##STR18## wherein R 2 is an alkoxyalkyl group containing 2-12 carbon atoms; and the balance to a total of 100 mole % of the structural unit ##STR19## wherein R 3 is a C 1-3 alkyl group; 90to 10 parts by weight of a hydrogenated nitrile rubber having a degree of unsaturation of from 0.1 to 20%; and a peroxide curing system.
Claim 11
Dependent Claim
18 words
A peroxide-curable composition according to claim 7 wherein the peroxide curing system comprises di-1,1-bis (t-butylperoxy)-3,3,4-trimethylcyclohexane and m-phenylenediamine bis-maleimide.
Claim 12
Dependent Claim
22 words
A peroxide curable composition blend according to claim 7, consisting essentially of 20 to 30 mole % of the structural unit ##STR20##
Claim 13
Dependent Claim
118 words
A peroxide-curable composition which comprises a blend of: 10 to 90 parts by weight of a polyacrylate elastomer comprising at least 10 mole % of the structural unit ##STR21## wherein R 1 is a C 4-8 alkyl group; up to 30 mole % of the structural unit ##STR22## wherein R 2 is an alkoxylalkyl group containing 2-12 carbon atoms; 1 to 10 mole % of the structural unit ##STR23## and the balance to a total of 100 mole % of the structural unit ##STR24## wherein R 3 is a C 1-3 alkyl group; 90to 10 parts by weight of a hydrogenated nitrile rubber having a degree of unsaturation of from 0.1 to 20%; and a peroxide curing system.
Claim 14
Dependent Claim
118 words
A peroxide-curable composition which comprises a blend of: 10 to 90 parts by weight of a polyacrylate elastomer comprising at least 10 mole % of the structural unit ##STR21## wherein R 1 is a C 4-8 alkyl group; up to 30 mole % of the structural unit ##STR22## wherein R 2 is an alkoxylalkyl group containing 2-12 carbon atoms; 1 to 10 mole % of the structural unit ##STR23## and the balance to a total of 100 mole % of the structural unit ##STR24## wherein R 3 is a C 1-3 alkyl group; 90to 10 parts by weight of a hydrogenated nitrile rubber having a degree of unsaturation of from 0.1 to 20%; and a peroxide curing system.
Claim 15
Dependent Claim
19 words
A peroxide-curable composition according to claim 10, wherein the peroxide curing system comprises an organic peroxide and m-phenylenediamine bis-maleimide.
Claim 16
Dependent Claim
20 words
A peroxide-cured blend according to claim 10, consisting essentially of 20 to 30 mole % of the structural unit ##STR25##
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) | 2000-03-17 | 2000-09-16 | 2001-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-17 | 2004-09-16 | 2005-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-17 | 2008-09-16 | 2009-03-18 | $7700.00 | Window Closed / Lapsed |