Patent US4010223A successfully refreshed from Google Patents.
US4010223A
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Adducts containing succinic groups attached to elastomeric copolymers
Assignee: EIDP Inc
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Filing: 1975-05-16
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Granted: 1977-03-01
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Expires: 1995-05-16
Abstract
Abstract An adduct containing succinic groups attached to an elastomeric copolymer of ethylene, at least one C 3 -C 6 α-olefin, and at least one nonconjugated diene; the adduct having an inherent viscosity of at least one as measured on 0.1 gram of adduct dissolved in 100 milliliters of perchloroethylene at 30° C. and having a gel content less than about 5% as measured by weight percent adduct insoluble in boiling tetrahydrofuran at atmospheric pressure after 48 hours.
Inventors
- 👤 Stanley William Caywood, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:35
CPC Classifications
C; C08; C08L; C08L55/00; C08L55/04; C08F; C08F8/00; C08F8/46; C08L23/00; C08L23/26; C08F2800/00; C08F2800/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
78 words
An adduct containing succinic groups attached to an elastomeric copolymer of ethylene, at least one C 3 to C 6 α-olefin, and at least one nonconjugated diene; the adduct having an inherent viscosity of at least one as measured on 0.1 gram of adduct dissolved in 100 milliliters of perchloroethylene at 30° C. and having a gel content less than about 5% as measured by weight percent adduct insoluble in boiling tetrahydrofuran at atmospheric pressure after 48 hours.
Claim 2
Dependent Claim
78 words
An adduct containing succinic groups attached to an elastomeric copolymer of ethylene, at least one C 3 to C 6 α-olefin, and at least one nonconjugated diene; the adduct having an inherent viscosity of at least one as measured on 0.1 gram of adduct dissolved in 100 milliliters of perchloroethylene at 30° C. and having a gel content less than about 5% as measured by weight percent adduct insoluble in boiling tetrahydrofuran at atmospheric pressure after 48 hours.
Claim 3
Dependent Claim
49 words
The adduct of claim 1 wherein the elastomeric copolymer is a copolymer of ethylene, propylene, and at least one of a linear aliphatic diene of at least six carbon atoms having one terminal double bond, and a cyclic diene with at least one double bond in a cyclic ring.
Claim 4
Dependent Claim
45 words
The adduct of claim 1 wherein the elastomeric copolymer is a copolymer of ethylene, propylene, and 1,4-hexadiene having an inherent viscosity of at least about 1.5, and the adduct contains succinic groups calculated as maleic anhydride in an amount of 0.5 to 9% by weight.
Claim 5
Dependent Claim
31 words
The adduct of claim 3 wherein the adduct contains about 1 to 4% by weight of succinic groups calculated as maleic anhydride and has a gel content less than about 2%.
Claim 6
Dependent Claim
30 words
The adduct of claim 1 wherein the elastomeric copolymer is a copolymer of ethylene, propylene, and at least one of an alkylidene bicycloalkene, alkenyl bicycloalkene, bicycloalkadiene, and an alkenyl cycloalkene.
Claim 7
Dependent Claim
43 words
The adduct of claim 5 wherein the nonconjugated diene is 5-ethylidene-2-norbornene, the elastic copolymer has an inherent viscosity of about 1.5 to 3.0, and the adduct contains succinic groups calculated as maleic anhydride in an amount of about 0.5 to 9% by weight.
Claim 8
Dependent Claim
26 words
The adduct of claim 1 wherein the elastomeric copolymer is a copolymer of ethylene, propylene, a monoreactive nonconjugated diene, and at least one direactive nonconjugated diene.
Claim 9
Dependent Claim
46 words
The adduct of claim 7 wherein the elastomeric copolymer is a tetrapolymer of ethylene, propylene, 1,4-hexadiene, and 2,5-norbornadiene having an inherent viscosity of about 1.2 to 3.0; and the adduct contains succinic groups calculated as maleic anhydride in an amount of 0.5 to 9% by weight.
Claim 10
Dependent Claim
19 words
The adduct of claim 1 wherein said succinic groups consist of a mixture of succinic anhydride and succinic acid.
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) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |