US4158653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomer blend composition of a sulfonated EPDM terpolymer and a polystyrene resin
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1977-04-26
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Granted: 1979-06-19
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Expires: 1997-04-26
Abstract
Abstract This invention relates to heterogeneous elastomeric blends having improved rheological properties of a major portion of a neutralized sulfonated elastomeric polymer with a minor portion of a polystyrene thermoplastic resin or a neutralized sulfonated polystyrene resin and mixtures thereof. Both the sulfonated elastomeric polymer and the sulfonated thermoplastic resin have about 0.2 to about 10.0 mole percent of SO3H groups, at least 90% of which are neutralized with an organic amine.
Inventors
- 👤 Chan I. Chung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:36
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/26; C08L23/32; C08J; C08J3/00; C08J3/005; C08L25/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
58 words
An elastomeric blend composition, which comprises: (a) a neutralized sulfonated EPDM terpolymer; and (b) about 1 to about 20 parts per hundred by weight of a thermoplastic resin based on 100 parts of said neutralized sulfonated EPDM terpolymer, said thermoplastic resin being selected from the group consisting of poly alpha methylstyrene, poly-t-butylstyrene, polyhalo-styrene, and polystyrene and mixtures thereof.
Claim 2
Dependent Claim
58 words
An elastomeric blend composition, which comprises: (a) a neutralized sulfonated EPDM terpolymer; and (b) about 1 to about 20 parts per hundred by weight of a thermoplastic resin based on 100 parts of said neutralized sulfonated EPDM terpolymer, said thermoplastic resin being selected from the group consisting of poly alpha methylstyrene, poly-t-butylstyrene, polyhalo-styrene, and polystyrene and mixtures thereof.
Claim 3
Dependent Claim
34 words
A composition according to claim 1, wherein said neutralized sulfonated EPDM terpolymer has about 0.2 to about 10.0 mole percent neutralized sulfonate groups, at least 90% of which being neutralized with an organic amine.
Claim 4
Dependent Claim
36 words
A composition according to claim 2, further comprising said thermoplastic resin being sulfonated with about 0.2 to about 10.0 mole percent of neutralized sulfonate groups, at least 90% of which being neutralized with an organic amine.
Claim 5
Dependent Claim
25 words
A composition according to claim 3, further including a process oil, said process oil being selected from the group consisting of naphthenic, aromatics, and paraffinics.
Claim 6
Dependent Claim
29 words
A composition according to claim 4, further including a filler, said filler being selected from the group consisting of carbon blacks, clays, talc, and calcium carbonate and mixtures thereof.
Claim 7
Dependent Claim
11 words
A composition according to claim 1, wherein the thermoplastic is polystyrene.
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) | 1982-06-18 | 1982-12-18 | 1983-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-18 | 1986-12-18 | 1987-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-18 | 1990-12-18 | 1991-06-19 | $7700.00 | Window Closed / Lapsed |