Patent US3856738A successfully refreshed from Google Patents.
US3856738A
Expired / Lapsed
US
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Acrylonitrile polymers with reduced surface resistance
Assignee: Bayer AG
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Filing: 1972-12-01
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Granted: 1974-12-24
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Expires: 1992-12-01
Abstract
Abstract Antistatic acrylonitrile polymers containing a polyalkylene oxide with sulfonate groups as an antistatic agent are the object of the invention. Fibres consisting of acrylonitrile polymers and 1 to 20 percent by weight of said antistatic agent show reduced surface resistance. Antistatic fibres are prepared from a spinning dope solution which comprises an organic solvent, an acrylonitrile polymer having at least 60 percent by weight of acrylonitrile and as an antistatic additive a sulfonate groups containing polyalkylene oxide compound.
Inventors
- 👤 F Bodesheim
- 👤 E Radlmann
- 👤 H Schaffner
- 👤 G Nischk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:29
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; Y; Y10; Y10S; Y10S260/00; Y10S260/21
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
51 words
AN ANTISTATIC ACRYLONITRILE POLYMER COMPOSITION WHICH HAS INCORPORATED THREIN AN ACRYLONITRILE POLYMER HAVING AT LEAST 60 PERCENT BY WEIGHT OF ACRYLONITRILE AND AS AN ANTISTATIC AGENT 1 TO 20 PERCENT BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE POLYMER COMPOSITION OF A SULPHONATE GROUPS CONTAINING POLYALKYLENOXIDE COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
51 words
AN ANTISTATIC ACRYLONITRILE POLYMER COMPOSITION WHICH HAS INCORPORATED THREIN AN ACRYLONITRILE POLYMER HAVING AT LEAST 60 PERCENT BY WEIGHT OF ACRYLONITRILE AND AS AN ANTISTATIC AGENT 1 TO 20 PERCENT BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE POLYMER COMPOSITION OF A SULPHONATE GROUPS CONTAINING POLYALKYLENOXIDE COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
24 words
The antistatic acrylonitrile polymer composition of claim 1, in which the acrylonitrile polymer is a copolymer from acrylonitrile and vinyl, acrylic or allyl compounds.
Claim 4
Dependent Claim
23 words
The antistatic acrylnitrile polymer composition of claim 1, in which the acrylonitrile polymer is a copolymer from acrylonitrile, methyl acrylate and methallysulphonic acid.
Claim 5
Dependent Claim
23 words
The antistatic acrylonitrile polymer composition of claim 1, in which the acrylnitrile polymer is a copolymer from acrylonitrile, vinylidene chloride and methallysulphonic acid.
Claim 6
Dependent Claim
53 words
Antistatic fibres of acrylonitrile polymers consisting essentially of an acrylonitrile polymer having at least 60 percent by weight of acrylonitrile and incorporated therein as an antistatic agent 1 to 20 percent by weight based on the total amount of the polymer composition of a sulphonate groups containing polyalkylene oxide compound of the formula
Claim 7
Dependent Claim
53 words
Antistatic fibres of acrylonitrile polymers consisting essentially of an acrylonitrile polymer having at least 60 percent by weight of acrylonitrile and incorporated therein as an antistatic agent 1 to 20 percent by weight based on the total amount of the polymer composition of a sulphonate groups containing polyalkylene oxide compound of the formula
Claim 8
Dependent Claim
74 words
A spinning dope solution for preparing an antistatic fibre of acrylonitrile polymers of claim 5 comprising a polar organic solvent, an acrylonitrile polymer having at least 60 percent by weight of acrylonitrile and 1 to 20 percent by weight, based on the total amount of the polymer composition of a sulphonate groups containing polyalkylene oxide compound as solutes to form a 15 to 30 percent solution by weight of said solutes in said solvent.
Claim 9
Dependent Claim
13 words
The spinning dope solutions of claim 6, wherein said solvent is dimethyl formamide.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |