Patent US3893979A successfully refreshed from Google Patents.
US3893979A
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US
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Polyetherurethanes which contain hydantoin rings and their use as antistatic agents
Assignee: Bayer AG
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Filing: 1973-09-14
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Granted: 1975-07-08
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Expires: 1993-09-14
Abstract
Abstract The invention relates to polyetherurethanes which contain hydantoin rings and their use as antistatic agents for threads, fibers, foils and films produced from polymers. These polyetherurethanes which contain hydantoin rings are particularly noteworthy by combining the following advantages. The presence of the hydantoin rings gives them excellent compatibility with the polymers and in addition they impart to the polymers an antistatic property which is very resistant to washing. Another major advantage of these compounds is that they substantially improve the light fastness of the polymers, evidently due to the presence of the hydantoins.
Inventors
- 👤 Gerhard Dieter Wolf
- 👤 Helmut Engelhard
- 👤 Francis Bentz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:27
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5054; C08G18/506; C08G18/70; C08G18/71; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/26; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3445; Y; Y10; Y10S; Y10S524/00; Y10S524/91; Y10S524/913; Y10S525/00; Y10S525/908; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
37 words
POLYETHERURETHANES CONTAINING HYDANTOIN RINGS CORRESPONDING TO THE GENERAL FORMULA X-(OCNH2N)Q-(OCMH2M)Q-HYD-Y-HYD-(CMH2MO)Q-(CNH2NO)Q-X IN WHICH Y REPRESENTS A BIVALENT C2-18 HYDROCARBON GROUP OR A BIVALENT C2-C8 HYDROCARBON GROUP SUBSTITUTED WITH HALOGEN. ALKYL, -NO2 OR -CN AND X REPRESENTS THE GROUP
Claim 2
Dependent Claim
37 words
POLYETHERURETHANES CONTAINING HYDANTOIN RINGS CORRESPONDING TO THE GENERAL FORMULA X-(OCNH2N)Q-(OCMH2M)Q-HYD-Y-HYD-(CMH2MO)Q-(CNH2NO)Q-X IN WHICH Y REPRESENTS A BIVALENT C2-18 HYDROCARBON GROUP OR A BIVALENT C2-C8 HYDROCARBON GROUP SUBSTITUTED WITH HALOGEN. ALKYL, -NO2 OR -CN AND X REPRESENTS THE GROUP
Claim 3
Dependent Claim
4 words
Polyetherurethane having the formula
Claim 4
Dependent Claim
4 words
Polyetherurethane having the formula
Claim 5
Dependent Claim
4 words
Polyetherurethane having the formula
Claim 6
Dependent Claim
4 words
Polyetherurethane having the formula
Claim 7
Dependent Claim
9 words
Polyetherurethanes containing hydantoin rings corresponding to the general formula
Claim 8
Dependent Claim
9 words
Polyetherurethanes containing hydantoin rings corresponding to the general formula
References Cited (Backward Citations)
US3629263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |