US4985175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomer-modified carbon-containing polyarylene sulfide blends
Assignee: Bayer AG
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Filing: 1989-08-14
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Granted: 1991-01-15
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Expires: 2009-08-14
Abstract
Abstract The invention relates to conductive blends of polyarylene sulfides (PAS), preferably polyphenylene sulfide (PPS), with graft polymers, conductive carbon black and graphite.
Inventors
- 👤 Hans-Jurgen Dziurla
- 👤 Klaus Reinking
- 👤 Wolfgang Wehnert
- 👤 Erhard Tresper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:58
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08L; C08L81/00; C08L81/02; C08L51/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
160 words
Conductive blends of (a) 20 to 82% by weight of polyarylene sulfide, (b) 4 to 60% by weight of conductive carbon black, (c) 4 to 60% by weight of graphite, (d) 1 to 60% by weight of a graft polymer of (A) 25 to 95 parts by weight of a copolymer of (a) 75 to 99.8 parts by weight of a C 1 -C 6 -alkyl acrylate, (b) 0.1 to 5 parts by weight of a monomer containing at least 2 non-conjugated olefinic double bonds and (c) 0 to 40 parts by weight of an unsaturated monomer other than (a) and (b) and (B) 75 to 5 parts by weight of a resin which has been obtained by polymerisation of at least one olefinically unsaturated monomer and has been produced in the presence of (A), the sum of the percentages by weight of constituents (a)+(b)+(c)+(d) being in each case 100% by weight, and optionally other standard fillers and reinforcing materials.
Claim 2
Dependent Claim
160 words
Conductive blends of (a) 20 to 82% by weight of polyarylene sulfide, (b) 4 to 60% by weight of conductive carbon black, (c) 4 to 60% by weight of graphite, (d) 1 to 60% by weight of a graft polymer of (A) 25 to 95 parts by weight of a copolymer of (a) 75 to 99.8 parts by weight of a C 1 -C 6 -alkyl acrylate, (b) 0.1 to 5 parts by weight of a monomer containing at least 2 non-conjugated olefinic double bonds and (c) 0 to 40 parts by weight of an unsaturated monomer other than (a) and (b) and (B) 75 to 5 parts by weight of a resin which has been obtained by polymerisation of at least one olefinically unsaturated monomer and has been produced in the presence of (A), the sum of the percentages by weight of constituents (a)+(b)+(c)+(d) being in each case 100% by weight, and optionally other standard fillers and reinforcing materials.
Claim 3
Dependent Claim
15 words
Mixtures as claimed in claim 1, characterized in that the polyarylene sulfide is polyphenylene sulfide.
Claim 4
Dependent Claim
16 words
Mixtures as claimed in claim 1, characterized in that the graft polymer is an acrylate rubber.
Claim 5
Dependent Claim
18 words
Mixtures as claimed in claim 1, characterized in that they contain metal fibers, flakes or powders as filler.
Claim 6
Dependent Claim
12 words
Molded articles, fibers and films comprising the mixtures claimed in claim 1.
Claim 7
Dependent Claim
28 words
Mixtures as claimed in claim 1 wherein component (B) is obtained by the polymerization of C 1 -C 4 alkyl acrylates or methacrylates, styrene, acrylonitrile or mixtures thereof.
Claim 8
Dependent Claim
17 words
Mixtures as claimed in claim 1 wherein componet (B) is a C 1 -C 4 alkyl methacrylate.
Claim 9
Dependent Claim
32 words
Mixtures as claimed in claim 1 wherein monomer (b) is a polyacrylic or polymethacrylic acid ester of a polyhydirc alcohol containing 2 to 8 carbon atoms and 2 to 4 hydroxyl groups.
Claim 10
Dependent Claim
17 words
Mixtures as claimed in claim 1 wherein monomer (b) is butylene diacrylate, allyl methacrylate or diallyl maleate.
Claim 11
Dependent Claim
31 words
Mixtures as claimed in claim 1 wherein monomer (c) is ethylene, isoprene, a vinyl ether, butadiene, styrene, a vinyl ester, a vinyl halide, a vinyl-substituted heterocyclic compound or a mixture thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-14 | 1994-07-16 | 1995-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-14 | 1998-07-16 | 1999-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-14 | 2002-07-16 | 2003-01-15 | $7700.00 | Window Closed / Lapsed |