US4567248A
Expired / Lapsed
US
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Branched, high molecular weight, thermoplastic polyarylene ethers containing nitrile groups, and their preparation
Assignee: BASF SE
•
Filing: 1984-12-13
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Granted: 1986-01-28
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Expires: 2004-12-13
Abstract
Abstract Branched, high molecular weight, thermoplastic polyarylene ethers which contain nitrile groups and are composed of repeating units of the formula I -E1-O-E2-O- where E1 is a radical derived from a dihalobenzene compound and E2 is a radical derived from a bisphenol, and contain from 0.01 to 5 mol %, based on the radical E1, of one or more radicals derived from polyhalo compounds of the formulae <IMAGE> (II) <IMAGE> (III) <IMAGE> (IV) <IMAGE> (V) <IMAGE> (VI) where X is fluorine or chlorine, and their preparation.
Inventors
- 👤 Gerd Blinne
- 👤 Herbert Bender
- 👤 Peter Neumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:57
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/40; C08G65/4012; C08G65/4031; C08G65/4037; C08G65/4006; C08G75/00; C08G75/20; C08G75/23
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
78 words
A branched, high molecular weight, thermoplastic polyarylene ether which contains nitrile groups and repeating units of the formula I --E.sub.1 --O--E.sub.2 --O, I where E 1 is a halogen-free residuum of a dihalobenzene compound and E 2 is a HO-free residuum from a bisphenol, and contains from 0.01 to 5 mol %, based on the radical E 1 , of one or more halogen-free residuum of polyhalo compounds of the formulae ##STR41## where X is fluorine or chlorine.
Claim 2
Dependent Claim
78 words
A branched, high molecular weight, thermoplastic polyarylene ether which contains nitrile groups and repeating units of the formula I --E.sub.1 --O--E.sub.2 --O, I where E 1 is a halogen-free residuum of a dihalobenzene compound and E 2 is a HO-free residuum from a bisphenol, and contains from 0.01 to 5 mol %, based on the radical E 1 , of one or more halogen-free residuum of polyhalo compounds of the formulae ##STR41## where X is fluorine or chlorine.
Claim 3
Dependent Claim
22 words
A polyarylene ether as set forth in claim 1, which contains radicals derived from polyhalo compounds of the formulae II and III.
Claim 4
Dependent Claim
22 words
A polyarylene ether as set forth in claim 1, which consists of radicals derived from bis-(4-halophenyl) sulfone and bis-(4-hydroxyphenyl) sulfone and/or 2,2-bis-(4-hydroxyphenyl)-propane.
Claim 5
Dependent Claim
87 words
A process for the preparation of a branched, high molecular weight, thermoplastic polyarylene ether polycondensate containing nitrile groups, which comprises reacting essentially equivalent amounts of a bisphenol, or of a mixture of several bisphenols, with a dihalobenzene compound or mixture of several dihalobenzene compounds, and one or more polyhalobenzene compound of the formulae ##STR42## where X is fluorine or chlorine, in an amount of from 0.01 to 5 mol %, based on the amount of dihalobenzene compounds, used, in the presence of an anhydrous alkali metal carbonate.
Claim 6
Dependent Claim
87 words
A process for the preparation of a branched, high molecular weight, thermoplastic polyarylene ether polycondensate containing nitrile groups, which comprises reacting essentially equivalent amounts of a bisphenol, or of a mixture of several bisphenols, with a dihalobenzene compound or mixture of several dihalobenzene compounds, and one or more polyhalobenzene compound of the formulae ##STR42## where X is fluorine or chlorine, in an amount of from 0.01 to 5 mol %, based on the amount of dihalobenzene compounds, used, in the presence of an anhydrous alkali metal carbonate.
Claim 7
Dependent Claim
33 words
A process as set forth in claim 4, wherein from 0.1 to 2 mol %, based on the amount of dihalobenzene compounds, of polyhalo compounds of the formulae II to VI is used.
Claim 8
Dependent Claim
19 words
A process as set forth in claim 4, wherein polyhalobenzene compounds of the formulae II and III are present.
Claim 9
Dependent Claim
28 words
A process as set forth in claim 4, wherein not less than 70 mol %, based on the amount of dihalobenzene compounds used, of bis-(4-chlorophenyl) sulfone is employed.
Claim 10
Dependent Claim
27 words
A process as set forth in claim 4, wherein not less than 70 mol %, based on the amount of bisphenols used, of bis-(4-hydroxyphenyl) sulfone is employed.
Claim 11
Dependent Claim
25 words
A process as set forth in claim 4, wherein not less than 70 mol %, based on the amount of bisphenols, of 2,2-bis-(4-hydroxyphenyl)-propane is used.
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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) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |