Patent US3933228A successfully refreshed from Google Patents.
US4544702A
Expired / Lapsed
US
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Modified ionic elastomer and blend with nylon
Assignee: Uniroyal Chemical Co Inc
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Filing: 1984-06-11
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Granted: 1985-10-01
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Expires: 2004-06-11
Abstract
Abstract Adduct of an unsaturated dicarboxylic acid or ester (e.g., maleic anhydride) and neutralized sulfonated EPDM is an ionic elastomer useful as an impact-modifier for nylon.
Inventors
- 👤 Nedie L. DeVera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:14
CPC Classifications
C; C08; C08L; C08L77/00; C08F; C08F8/00; C08F8/46
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
100 words
A polymer blend which comprises an admixture of (a) from 60 to 97 parts by weight of nylon and (b) correspondingly from 40 to 3 parts by weight of an ionic elastomeric adduct containing carboxylic groups, which is a neutralized sulfonated copolymer of ethylene, an alpha-olefin having from 3 to 10 carbon atoms, and a copolymerizable non-conjugated diene, said adduct having succinic acid groups attached thereto, the sulfonic acid content being from 1 to 30 milliequivalents per 100 grams, and the carboxylic content calculated as maleic anhydride being from 0.1 to 10% based on the total weight of the elastomer.
Claim 2
Dependent Claim
100 words
A polymer blend which comprises an admixture of (a) from 60 to 97 parts by weight of nylon and (b) correspondingly from 40 to 3 parts by weight of an ionic elastomeric adduct containing carboxylic groups, which is a neutralized sulfonated copolymer of ethylene, an alpha-olefin having from 3 to 10 carbon atoms, and a copolymerizable non-conjugated diene, said adduct having succinic acid groups attached thereto, the sulfonic acid content being from 1 to 30 milliequivalents per 100 grams, and the carboxylic content calculated as maleic anhydride being from 0.1 to 10% based on the total weight of the elastomer.
Claim 3
Dependent Claim
42 words
A polymeric blend as in claim 1 in which the sulfonic acid content of the sulfonated copolymer is from 2 to 20 milliequivalents per 100 grams and the carboxylic content of the adduct calculated as maleic anhydride is from 0.3 to 5%.
Claim 4
Dependent Claim
16 words
A polymeric blend as in claim 1 in which the copolymer is an ethylene-propylene-ethylidene norbornene terpolymer.
Claim 5
Dependent Claim
23 words
A polymeric blend as in claim 1 containing from 75 to 82 parts of (a) and from 25 to 18 parts of (b).
Claim 6
Dependent Claim
42 words
A polymeric blend as in claim 4 in which the sulfonic acid content of the sulfonated copolymer is from 2 to 20 milliequivalents per 100 grams and the carboxylic content of the adduct calculated as maleic anhydride is from 0.3 to 5%.
Claim 7
Dependent Claim
16 words
A polymeric blend as in claim 4 in which the copolymer is an ethylene-propylene-ethylidene norbornene terpolymer.
Claim 8
Dependent Claim
22 words
A polymeric blend as in claim 4 in which the adduct is a reaction product of maleic anhydride with the sulfonated copolymer.
Claim 9
Dependent Claim
13 words
A polymeric blend as in claim 1 in which (a) is nylon 6.
Claim 10
Dependent Claim
13 words
A polymeric blend as in claim 1 in which (a) is nylon 6/6.
Claim 11
Dependent Claim
13 words
A polymeric blend as in claim 1 in which (a) is nylon 11.
Claim 12
Dependent Claim
13 words
A polymeric blend as in claim 6 in which (a) is nylon 6.
Claim 13
Dependent Claim
13 words
A polymeric blend as in claim 6 in which (a) is nylon 6/6.
Claim 14
Dependent Claim
13 words
A polymeric blend as in claim 6 in which (a) is nylon 11.
Claim 15
Independent Claim
103 words
A method of preparing a polymeric blend composition which comprises mixing (a) from 60 to 97 parts by weight of nylon and (b) correspondingly from 40 to 3 parts by weight of an ionic elastomeric adduct containing carboxylic groups, which is a neutralized sulfonated copolymer of ethylene, an alpha-olefin having from 3 to 10 carbon atoms, and a copolymerizable non-conjugated diene, said adduct having succinic acid groups attached thereto, the sulfonic acid content being from 1 to 30 milliequivalents per 100 grams, and the carboxylic content calculated as maleic anhydride being from 0.1 to 10% based on the total weight of the elastomer.
Claim 16
Independent Claim
103 words
A method of preparing a polymeric blend composition which comprises mixing (a) from 60 to 97 parts by weight of nylon and (b) correspondingly from 40 to 3 parts by weight of an ionic elastomeric adduct containing carboxylic groups, which is a neutralized sulfonated copolymer of ethylene, an alpha-olefin having from 3 to 10 carbon atoms, and a copolymerizable non-conjugated diene, said adduct having succinic acid groups attached thereto, the sulfonic acid content being from 1 to 30 milliequivalents per 100 grams, and the carboxylic content calculated as maleic anhydride being from 0.1 to 10% based on the total weight of the elastomer.
Claim 17
Independent Claim
101 words
A method of preparing a polymeric blend composition which comprises mixing (a) from 75 to 82 parts by weight of nylon and (b) correspondingly from 25 to 18 parts by weight of an ionic elastomeric adduct of maleic anhydride and neutralized sulfonated EPDM, the sulfonic acid content of the neutralized sulfonated EPDM being from 2 to 20 milliequivalents per 100 grams and the maleic anhydride content of the adduct being from 0.3 to 5% based on the weight of the adduct, the EPDM being an ethylene-propylene-ethylidene norbornene terpolymer and the nylon being selected from nylon 6, nylon 6/6 and nylon 11.
Claim 18
Independent Claim
101 words
A method of preparing a polymeric blend composition which comprises mixing (a) from 75 to 82 parts by weight of nylon and (b) correspondingly from 25 to 18 parts by weight of an ionic elastomeric adduct of maleic anhydride and neutralized sulfonated EPDM, the sulfonic acid content of the neutralized sulfonated EPDM being from 2 to 20 milliequivalents per 100 grams and the maleic anhydride content of the adduct being from 0.3 to 5% based on the weight of the adduct, the EPDM being an ethylene-propylene-ethylidene norbornene terpolymer and the nylon being selected from nylon 6, nylon 6/6 and nylon 11.
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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) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |