Patent US4124653A successfully refreshed from Google Patents.
US4124653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomer blend
Assignee: EIDP Inc
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Filing: 1977-12-12
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Granted: 1978-11-07
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Expires: 1997-12-12
Abstract
Abstract An elastomeric blend of (A) a butadiene/acrylonitrile copolymer and (B) a copolyetherester consisting essentially of 15-95% by weight of short chain ester units derived from a dicarboxylic acid and having a molecular weight not greater than 300 and a diol having a molecular weight not greater than 250, and 5-85% by weight of long chain ester units derived from a dicarboxylic acid having a molecular weight not greater than 300 and a poly(alkylene oxide)glycol having a number average molecular weight of 400-6000, said copolyetherester having a melting point of at least 100° C; the blend containing from 1-50% by weight of component (A).
Inventors
- 👤 Kenneth H. Whitlock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:54
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/672; C08L; C08L67/00; C08L67/02; C08L67/025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
103 words
An elastomeric blend of (A) a butadiene/acrylonitrile copolymer and (B) a copolyetherester consisting essentially of 15-95% by weight of short chain ester units derived from a dicarboxylic acid and having a molecular weight not greater than 300 and a diol having a molecular weight not greater than 250, and 5-85% by weight of long chain ester units derived from a dicarboxylic acid having a molecular weight not greater than 300 and a poly(alkylene oxide)glycol having a number average molecular weight of 400-6000, said copolyetherester having a melting point of at least 100° C.; the blend containing from 1-50% by weight of component (A).
Claim 2
Dependent Claim
103 words
An elastomeric blend of (A) a butadiene/acrylonitrile copolymer and (B) a copolyetherester consisting essentially of 15-95% by weight of short chain ester units derived from a dicarboxylic acid and having a molecular weight not greater than 300 and a diol having a molecular weight not greater than 250, and 5-85% by weight of long chain ester units derived from a dicarboxylic acid having a molecular weight not greater than 300 and a poly(alkylene oxide)glycol having a number average molecular weight of 400-6000, said copolyetherester having a melting point of at least 100° C.; the blend containing from 1-50% by weight of component (A).
Claim 3
Dependent Claim
19 words
An elastomeric blend of claim 1 wherein said blend has a melt tension of at least about 0.4 gm.
Claim 4
Dependent Claim
21 words
An elastomeric blend of claim 2 wherein the acrylonitrile/butadiene copolymer has a Mooney viscosity of from about 30-120 [ML-4, 100° C.].
Claim 5
Dependent Claim
31 words
An elastomeric blend of claim 2 wherein copolyetherester (B) has a molecular weight such that the inherent viscosity measured in m-cresol at 30° C. at 0.1 gm/dl is between about 0.75-1.7.
Claim 6
Dependent Claim
15 words
An elastomeric blend of claim 2 containing up to about 20% by weight polyvinyl chloride.
Claim 7
Dependent Claim
24 words
A blow-moldable elastomeric blend of claim 2 wherein the copolyetherester is derived from phthalic, isophthalic, terephthalic acid or mixtures thereof, 1,4-butanediol and poly(tetramethylene oxide)glycol.
Claim 8
Dependent Claim
25 words
A blow-moldable elastomeric blend of claim 2 wherein the acrylonitrile/butadiene copolymer is present in the blend in an amount of from about 15-35% by weight.
Claim 9
Dependent Claim
21 words
A blow-moldable elastomeric blend of claim 2 wherein copolyetherester component (B) has from about 15-75 weight percent long chain ester units.
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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) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |