US3821176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile-(co)-polymers with antistatic finishes
Assignee: Bayer AG
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Filing: 1972-12-01
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Granted: 1974-06-28
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Expires: 1992-12-01
Abstract
Abstract The invention relates to acrylonitrile-(co)-polymers treated with antistatic finishes which are obtained by reacting hydroxyalkylated alcohols, amines or fatty acids with maleic acid anhydride, followed by an addition reaction with bisulphites or phosphites.
Inventors
- 👤 G Arend
- 👤 E Radlmann
- 👤 G Nischk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:45
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0075; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/16; Y10S260/19; Y10S260/21
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
14 words
The polymer of claim 1 wherein the acrylonitrile is copolymerized with a vinyl compound.
Claim 2
Dependent Claim
15 words
The polymer of claim 2 wherein said vinyl compound is an acrylic or methacrylic compound.
Claim 3
Dependent Claim
36 words
The polymer of claim 3 wherein said vinyl compound is a member selected from the group consisting of acrylic acid ester or amide, methacrylic acid ester or amide, vinyl chloride, vinylidene chloride and a mixture thereof.
Claim 4
Dependent Claim
21 words
A polymer as claimed in claim 4 comprising copolymerisable compounds which contain acidic or basic groups which have affinities for dyes.
Claim 5
Dependent Claim
31 words
A process for the production of a shaped acrylonitrile polymer product from a polymer as claimed in claim 1, wherein the antistatic agent is added to the acrylonitrile polymer before shaping.
Claim 6
Dependent Claim
33 words
A process for the production of a thread or foil of an acrylonitrile polymer as claimed in claim 1, in which the antistatic agent is added to a spinnable solution of the polymer.
Claim 7
Dependent Claim
13 words
A thread or foil of an acrylonitrile polymer as claimed in claim 1.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |