US4551493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent flame-retardant poly(arylether-arylsulfone) molding materials
Assignee: BASF SE
•
Filing: 1984-02-21
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Granted: 1985-11-05
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Expires: 2004-02-21
Abstract
Abstract Transparent flame-retardant poly(arylether-arylsulfone) molding materials preferably contain not less than 50% by weight of units of the formula ##STR1## and, as a flameproofing agent, from 0.1 to 10% by weight, based on the weight of poly(arylether-arylsulfone), of a poly(2,6-dibromophenylene 1,4-oxide) having a molecular weight of from 1000 to 20000, and, if required, a heat stabilizer. The molding materials are useful for the production of shaped articles, films and fibers.
Inventors
- 👤 Gerd Blinne
- 👤 Volker Muench
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:19
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3437; C08K5/17; C08K5/18; C08L; C08L71/00; C08L81/00; C08L81/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
22 words
A transparent, flame-retardant molding composition which comprises: poly(arylether-arylsulfone) molding material, and an effective amount of a poly(2,6-dibromophenylene 1,4-oxide) as a flameproofing agent.
Claim 2
Dependent Claim
22 words
A transparent, flame-retardant molding composition which comprises: poly(arylether-arylsulfone) molding material, and an effective amount of a poly(2,6-dibromophenylene 1,4-oxide) as a flameproofing agent.
Claim 3
Dependent Claim
25 words
A transparent flame-retardant poly(arylether-arylsulfone) molding material as set forth in claim 1, wherein the poly(2,6-dibromophenylene 1,4-oxide) has a molecular weight of from 1000 to 20,000.
Claim 4
Dependent Claim
33 words
A transparent flame-retardant poly(arylether-arylsulfone) molding material as set forth in claim 1, which contains the poly(2,6-dibromophenylene 1,4-oxide) in an amount of from 0.1 to 10.0% by weight, based on the weight of poly(arylether-arylsulfone).
Claim 5
Dependent Claim
12 words
The molding material of claim 1, which further contains a heat stabilizer.
Claim 6
Dependent Claim
40 words
The molding material of claim 1, which contains a poly(2,6-dibromophenylene 1,4-oxide) and, in addition, from 0.1 to 5.0% by weight, based on the weight of poly(arylether-arylsulfone), of a heat stabilizer from the group consisting of cyclic and/or linear diphenylamine/acetone condensates.
Claim 7
Dependent Claim
43 words
A transparent flame-retardant poly(arylether-arylsulfone) molding material as set forth in claim 1, which contains from 0.1 to 10.0% by weight of a poly(2,6-dibromophenylene 1,4-oxide) and from 0.1 to 5.0% by weight of ##STR11## the percentages being based on the weight of the poly(arylether-arylsulfone).
Claim 8
Dependent Claim
28 words
A transparnt flame-retardant poly(arylether-arylsulfone) molding material as set forth in claim 1, wherein the poly(arylether-arylsulfone) contains not less than 50% by weight of units of the formula ##STR12##
Claim 9
Dependent Claim
32 words
A transparent flame-retardant poly(arylether-arylsulfone) molding material as set forth in claim 1, wherein the poly(arylether-arylsulfone) essentially consists of units of the formula ##STR13## where n is an integer from 30 to 100.
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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) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |