Patent US3852255A successfully refreshed from Google Patents.
US3852255A
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Shaped structures of acrylonitrile polymers containing antistatic additives
Assignee: Bayer AG
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Filing: 1974-02-13
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Granted: 1974-12-03
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Expires: 1994-02-13
Abstract
Abstract D R A W I N G Shaped structures of 85 - 99.5 percent by weight of an acrylonitrile polymers and 0.5 - 15 percent by weight of an antistatic additive being a polyether urethane compound of the general formula
Inventors
- 👤 F Bentz
- 👤 D Brokmeier
- 👤 U Reinehr
- 👤 G Nischk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:03
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/205; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S524/00; Y10S524/91; Y10S524/913
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
16 words
The shaped structure of claim 1, wherein in the general formula said bivalent radical R'' is
Claim 2
Dependent Claim
16 words
The shaped structure of claim 1, wherein in the general formula said bivalent radical R'' is
Claim 3
Dependent Claim
48 words
A shaped structure consisting of 90 to 98 percent by weight of an acrylonitrile polymer containing at least 60% by weight of acrylonitrile in polymerized form and as an antistatic agent of from 2 to 10 percent by weight of a polyether diurethane compound of the general formula
Claim 4
Dependent Claim
16 words
The shaped structure of claim 4, wherein in the general formula said bivalent radical R'' is
Claim 5
Dependent Claim
16 words
The shaped structure of claim 4, wherein in the general formula said bivalent radical R'' is
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |