Patent US4341882A successfully refreshed from Google Patents.
US4341882A
Expired / Lapsed
US
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Low resistivity thermoplastic compositions
Assignee: General Electric Co
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Filing: 1981-08-27
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Granted: 1982-07-27
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Expires: 2001-08-27
Abstract
Abstract Improved thermoplastic compositions are described. These compositions exhibit low resistivities making them particularly suitable for use in electrical applications. These compositions comprise a composition of polyphenylene ether and alkenyl aromatic resins in combination with an effective amount of anti-static agent. The anti-static agent is a styrene-allyl alcohol copolymer, anionically polymerized poly(ethylene oxide) or a combination thereof.
Inventors
- 👤 Arthur Katchman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:34
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/04; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08L71/02; Y; Y10; Y10S; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
41 words
In a thermoplastic composition comprising polyphenylene ether and alkenyl aromatic resin, the improvement wherein said composition contains an effective amount of an anti-static agent selected from the group consisting of styrene-allyl alcohol copolymer, anionically polymerized poly(ethylene oxide) and a combination thereof.
Claim 2
Dependent Claim
41 words
In a thermoplastic composition comprising polyphenylene ether and alkenyl aromatic resin, the improvement wherein said composition contains an effective amount of an anti-static agent selected from the group consisting of styrene-allyl alcohol copolymer, anionically polymerized poly(ethylene oxide) and a combination thereof.
Claim 3
Dependent Claim
21 words
The composition of claim 1, wherein the weight ratio between polyphenylene ether and alkenyl aromatic resins is from 1:5 to 5:1.
Claim 4
Dependent Claim
15 words
The composition of claim 1, wherein the alkenyl aromatic resin comprises rubber-modified high impact polystyrene.
Claim 5
Dependent Claim
18 words
The composition of claim 3, wherein said composition contains at least 2% by total weight of anti-static agent.
Claim 6
Dependent Claim
21 words
The composition of claim 4, wherein the anti-static agent comprises styrene-allyl alcohol copolymer having a molecular weight between 600 and 5,000.
Claim 7
Dependent Claim
23 words
The composition of claim 5, wherein the copolymer is a random copolymer having an alcohol degree of polymerization of from 10 to 30.
Claim 8
Dependent Claim
17 words
The composition of claim 6, wherein said composition contains from 2 to 20% copolymer by total weight.
Claim 9
Dependent Claim
22 words
The composition of claim 4, wherein the anti-static agent comprises anionically polymerized poly(ethylene oxide) having a molecular weight between 50,000 and 1,500,000.
Claim 10
Dependent Claim
20 words
The composition of claim 8, wherein said composition contains from 2 to 20% anionically polymerized poly(ethylene oxide) by total weight.
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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) | 1985-07-26 | 1986-01-25 | 1986-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-26 | 1990-01-25 | 1990-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-26 | 1994-01-25 | 1994-07-27 | $7700.00 | Window Closed / Lapsed |