US5093035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive polyarylenesulphide mixtures containing carbon
Assignee: Bayer AG
•
Filing: 1989-02-06
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Granted: 1992-03-03
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Expires: 2009-02-06
Abstract
Abstract The invention relates to conductive blends made from polyarylenesulphides, preferably polyphenylenesulphides (PPS) with graphite and conductive carbon black.
Inventors
- 👤 Heinz-Jurgen Dziurla
- 👤 Klaus Kraft
- 👤 Klaus Reinking
- 👤 Wolfgang Wehnert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:08
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
68 words
Conductive blends made from a) 20 to 92% by weight polyarylenesulphides, b) 4 to 60% by weight conductive carbon black and c) 4 to 60% by weight graphite, where the sum of the percentages by weight of the components a)+b)+c) is in every case 100% by weight and containing 0.01 to 150% by weight of glass fibers, based on the weight of the sum of the components a+b+c.
Claim 2
Dependent Claim
68 words
Conductive blends made from a) 20 to 92% by weight polyarylenesulphides, b) 4 to 60% by weight conductive carbon black and c) 4 to 60% by weight graphite, where the sum of the percentages by weight of the components a)+b)+c) is in every case 100% by weight and containing 0.01 to 150% by weight of glass fibers, based on the weight of the sum of the components a+b+c.
Claim 3
Dependent Claim
14 words
Mixtures according to claim 1, characterized in that polyphenylenesulphide is used as the polyarylenesulphides.
Claim 4
Dependent Claim
29 words
Mixtures according to claim 1, characterized in that the products produced from them have specific surface resistances less than 50 ohm.cm and specific volume resistances less than 5 ohm.cm.
Claim 5
Dependent Claim
23 words
Mixtures according to claim 1, characterized in that the mouldings produced from them have an electrical conductivity which reaches 0.125 Sm/mm 2 .
Claim 6
Dependent Claim
12 words
Mixtures according to claim 1 which additionally contain mica as a filler.
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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) | 1995-03-03 | 1995-09-02 | 1996-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-03 | 1999-09-02 | 2000-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-03 | 2003-09-02 | 2004-03-03 | $7700.00 | Window Closed / Lapsed |