US5155176A
Expired / Lapsed
US
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Blends of copoly(arylene sulfide) and polyamide
Assignee: Eastman Chemical Co
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Filing: 1992-03-23
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Granted: 1992-10-13
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Expires: 2012-03-23
Abstract
Abstract A composition comprising an admixture of (A) a copoly(arylene sulfide) corresponding to the structure [(--A--S--).sub.1-x (--A--S--S--).sub.x ].sub.n wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.5 to 0.001 and n is at least 25, and (B) a polyamide corresponding to the general structure ##STR1## or to the general structure ##STR2##
Inventors
- 👤 Shriram Bagrodia
- 👤 David R. Fagerburg
- 👤 Joseph J. Watkins
- 👤 Paul B. Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:17
CPC Classifications
C; C08; C08L; C08L77/00; C08L81/00; C08L81/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
155 words
A composition comprising an admixture of (A) from 99.5 to 50 weight percent, based on the weight of the admixture, of a copoly(arylene sulfide) corresponding to the structure [(--A--S--).sub.1-x (--A--S--S--).sub.x ].sub.n wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.5 to 0.001 and n is at least 25, and (B) from 0.5 to 50 weight percent, based on the weight of the admixture, of a polyamide corresponding to the structure ##STR6## wherein a is an integer in the range of 4 to 12, R corresponds to the structure (--CH.sub.2 --).sub.b wherein b is an integer in the range of 4 to 13 or to the structure ##STR7## wherein c is 0, 1, 2 or 3, and n is at least 25, or a polyamide corresponding to the structure ##STR8## wherein d is an integer in the range of 5 to 11 and m is at least 50.
Claim 2
Dependent Claim
155 words
A composition comprising an admixture of (A) from 99.5 to 50 weight percent, based on the weight of the admixture, of a copoly(arylene sulfide) corresponding to the structure [(--A--S--).sub.1-x (--A--S--S--).sub.x ].sub.n wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.5 to 0.001 and n is at least 25, and (B) from 0.5 to 50 weight percent, based on the weight of the admixture, of a polyamide corresponding to the structure ##STR6## wherein a is an integer in the range of 4 to 12, R corresponds to the structure (--CH.sub.2 --).sub.b wherein b is an integer in the range of 4 to 13 or to the structure ##STR7## wherein c is 0, 1, 2 or 3, and n is at least 25, or a polyamide corresponding to the structure ##STR8## wherein d is an integer in the range of 5 to 11 and m is at least 50.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein the divalent aromatic radical is provided by diiodobenzene, diiodonaphthalene or diiodobiphenyl.
Claim 4
Dependent Claim
20 words
The composition of claim 1 wherein the divalent aromatic radical is selected from p-diiodobenzene, m-diiodobenzene, p,p'-diiodobiphenyl, p,p'-diiododiphenyl ether or 2,6-diiodonaphthalene.
Claim 5
Dependent Claim
55 words
The composition of claim 1 wherein a in an integer in the range of 4 to 8, b is an integer in the range of 4 to 8, c is 0 or 1 n is at least 25, d is an integer in the range of 5 to 11, and m is at least 50.
Claim 6
Dependent Claim
109 words
A composition comprising an admixture of (A) from 98 to 75 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 50, and (B) from 2 to 25 weight percent, based on the weight of the admixture, of a polyamide corresponding to the structure ##STR9## wherein R corresponds to the structure (--CH.sub.2 --).sub.6 or to the structure ##STR10## and n is at least 50, or a polyamide corresponding to the structure ##STR11## wherein m is at least 75.
Claim 7
Dependent Claim
109 words
A composition comprising an admixture of (A) from 98 to 75 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 50, and (B) from 2 to 25 weight percent, based on the weight of the admixture, of a polyamide corresponding to the structure ##STR9## wherein R corresponds to the structure (--CH.sub.2 --).sub.6 or to the structure ##STR10## and n is at least 50, or a polyamide corresponding to the structure ##STR11## wherein m is at least 75.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |