US3983286A
Expired / Lapsed
US
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Method of fixing copper salts to articles of synthetic polymers
Assignee: Rhone Poulenc Textile SA
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Filing: 1975-03-04
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Granted: 1976-09-28
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Expires: 1995-03-04
Abstract
Abstract The invention relates to a method of fixing copper salts on articles of synthetic polymers such as described in copending U.S. Pat. application Ser. No. 353,730 filed Apr. 20, 1973, now U.S. Pat. No. 3,940,533, patented Feb. 24, 1976; it also concerns articles and particularly, textile articles which have been obtained by the process as well as all materials containing them. The process involves subjecting the articles to the action of hydrogen sulfide and then to the action of a copper salt, characterized by the fact that the treatment with the copper salt is carried out in the presence of polyphenol. The articles obtained may be used, because of their good antistatic properties, to the manufacture of floor or wall coverings and, because of their good conductivity, to the manufacture of heating articles (partitions, clothes, industrial heating articles, etc.).
Inventors
- 👤 Andre Arsac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:25
CPC Classifications
D; D06; D06Q; D06Q1/00; D06Q1/04; D06M; D06M11/00; D06M11/51; D06M11/55; D06M11/56; D06M13/00; D06M13/10; D06M13/144; D06M13/148; D06M13/152; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T442/00; Y10T442/20; Y10T442/2418; Y10T442/2467
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
73 words
In a process of fixing a copper salt on an article of synthetic polymers wherein the said article is subjected to the action of hydrogen sulfide under a positive gage pressure and then to the action of a copper salt, the method of improving the adhesion of the salt to the article which comprises treating the article with the salt in the presence of at least 0.1 percent by weight of a polyphenol.
Claim 2
Dependent Claim
73 words
In a process of fixing a copper salt on an article of synthetic polymers wherein the said article is subjected to the action of hydrogen sulfide under a positive gage pressure and then to the action of a copper salt, the method of improving the adhesion of the salt to the article which comprises treating the article with the salt in the presence of at least 0.1 percent by weight of a polyphenol.
Claim 3
Dependent Claim
14 words
Process according to claim 1 wherein the polyphenol is included in the salt solution.
Claim 4
Dependent Claim
22 words
The process of claim 2 wherein the concentration of polyphenol in the salt solution is between 3 and 6 percent by weight.
Claim 5
Dependent Claim
18 words
Process according to claim 1 wherein the article is pretreated with polyphenol before treatment with the salt solution.
Claim 6
Dependent Claim
10 words
Process according to claim 1 wherein the polyphenol is diphenol.
Claim 7
Dependent Claim
11 words
Process according to claim 1 wherein the polyphenol is 1,3,5-trihydroxy benzene.
Claim 8
Dependent Claim
14 words
Process according to claim 1 wherein the polyphenol is a natural or synthetic tannin.
Claim 9
Dependent Claim
12 words
Process according to claim 1 wherein the synthetic polymer is a polyamide.
Claim 10
Dependent Claim
28 words
Textile articles obtained by the process of claim 1 comprising a uniform, regular, continuous surface deposit of copper salt the thickness of which is between 0.01 and 0.5μ.
Claim 11
Dependent Claim
21 words
Textile articles containing at least 0.05 percent by weight of an article obtained in accordance with the process of claim 8.
Claim 12
Independent Claim
61 words
A method of improving the antistatic properties of a synthetic polymer which comprises impregnating the polymer with hydrogen sulfide under pressure and thereafter immersing the resulting product in an aqueous solution containing at least about 0.1 percent of a polyphenol and a copper salt which will react with the hydrogen sulfide to form an electrically conductive deposit on the synthetic polymer.
Claim 13
Independent Claim
61 words
A method of improving the antistatic properties of a synthetic polymer which comprises impregnating the polymer with hydrogen sulfide under pressure and thereafter immersing the resulting product in an aqueous solution containing at least about 0.1 percent of a polyphenol and a copper salt which will react with the hydrogen sulfide to form an electrically conductive deposit on the synthetic polymer.
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) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |