US5276111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blends of copoly(arylene sulfide) and poly(aryl sulfone)
Assignee: Eastman Chemical Co
•
Filing: 1993-01-29
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Granted: 1994-01-04
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Expires: 2013-01-29
Abstract
Abstract Disclosed is a composition comprising an admixture of (A) from 99 to 1 weight percent, based on the weight of the admixture, of a copoly(arylene sulfide) and (B) from 1 to 99 weight percent, based on the weight of the admixture, of a poly(aryl sulfone).
Inventors
- 👤 Shriram Bagrodia
- 👤 David R. Fagerburg
- 👤 Joseph J. Watkins
- 👤 Paul B. Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:13
CPC Classifications
C; C08; C08L; C08L81/00; C08L81/02; C08L81/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
82 words
A composition comprising an admixture of (A) from 99 to 1 weight percent, based on the weight of the admixture, of a copoly(phenylene sulfide) corresponding to the structure [(--A--S--).sub.1-x (--A--S--S--).sub.x ].sub.n wherein A is a divalent phenylene radical, x is in the range of 0.5 to 0.001 and n is at least 25, and (B) from 1 to 99 weight percent, based on the weight of the admixture, of a poly(arylsulfone) corresponding to the structure ##STR7## wherein n is at least 15.
Claim 2
Dependent Claim
82 words
A composition comprising an admixture of (A) from 99 to 1 weight percent, based on the weight of the admixture, of a copoly(phenylene sulfide) corresponding to the structure [(--A--S--).sub.1-x (--A--S--S--).sub.x ].sub.n wherein A is a divalent phenylene radical, x is in the range of 0.5 to 0.001 and n is at least 25, and (B) from 1 to 99 weight percent, based on the weight of the admixture, of a poly(arylsulfone) corresponding to the structure ##STR7## wherein n is at least 15.
Claim 3
Dependent Claim
37 words
The composition of claim 1 wherein the amount of component (A) is in the range of 85 to 15 weight percent and the amount of component (B) is in the range of 15 to 85 weight percent.
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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) | 1997-01-03 | 1997-07-05 | 1998-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-03 | 2001-07-05 | 2002-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-03 | 2005-07-05 | 2006-01-04 | $7700.00 | Window Closed / Lapsed |