US3940533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of attaching metal compounds to polymer articles
Assignee: Rhone Poulenc Textile SA
•
Filing: 1973-04-20
•
Granted: 1976-02-24
•
Expires: 1993-04-20
Abstract
Abstract A method of attaching metal compounds to articles formed from synthetic polymers wherein the articles are subjected to the action of hydrogen sulfide under pressure or to the action of an aqueous solution of a thioacetamide or thiourea, and then to the action of an aqueous solution of a silver, copper (cupric or cuprous), lead, tin or mercury salt. This method makes it possible to obtain articles, particularly textile articles, of improved electrical conductivity.
Inventors
- 👤 Andre Arsac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:50
CPC Classifications
D; D06; D06Q; D06Q1/00; D06Q1/04; D06M; D06M11/00; D06M11/83; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T442/00; Y10T442/30; Y10T442/3382; Y10T442/339
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
89 words
A method for improving the antistatic properties of a fiber selected from the group consisting of polyamide, polyester, polyamide-imide and aromatic polyamide fibers, which comprises treating the fiber with hydrogen sulfide under a pressure slightly over atmospheric or with an aqueous bath of thioacetamide or thiourea and thereafter impregnating the resulting product by immersing it in an aqueous solution containing a water soluble salt of copper, silver, tin, lead or mercury which will react with the said sulfur compound and form an electrically conductive deposit on the said fiber.
Claim 2
Independent Claim
89 words
A method for improving the antistatic properties of a fiber selected from the group consisting of polyamide, polyester, polyamide-imide and aromatic polyamide fibers, which comprises treating the fiber with hydrogen sulfide under a pressure slightly over atmospheric or with an aqueous bath of thioacetamide or thiourea and thereafter impregnating the resulting product by immersing it in an aqueous solution containing a water soluble salt of copper, silver, tin, lead or mercury which will react with the said sulfur compound and form an electrically conductive deposit on the said fiber.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein the metallic salt is a chloride, nitrate or sulfate of copper, silver, tin, lead or mercury.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein the said pressure is within the range of about 2 to 5 kilograms per square centimeter.
Claim 5
Dependent Claim
24 words
A conductive fabric made from fibers obtained by the process of Claim 1 having a continuous, regular and uniform coating of a metallic compound.
Claim 6
Independent Claim
124 words
A method of attaching a metallic compound to a fiber selected from the group consisting of polyamide, polyester, polyamide-imide and aromatic polyamide fibers, which comprises treating the fiber, for about 45 minutes to about 2 hours, at ambient temperature or above, with hydrogen sulfide under a pressure between 2 to 5 kg. per square centimeter or with an aqueous bath of thioacetamide or thiourea, with a concentration of about 3% to about 10% by weight, and exposing the resulting product for about 45 minutes to about 2 hours, at ambient temperature or above and at atmospheric pressure to the action of an aqueous solution of a silver, copper, lead, tin or mercury salt with a concentration of about 3% to about 10% by weight.
Claim 7
Independent Claim
124 words
A method of attaching a metallic compound to a fiber selected from the group consisting of polyamide, polyester, polyamide-imide and aromatic polyamide fibers, which comprises treating the fiber, for about 45 minutes to about 2 hours, at ambient temperature or above, with hydrogen sulfide under a pressure between 2 to 5 kg. per square centimeter or with an aqueous bath of thioacetamide or thiourea, with a concentration of about 3% to about 10% by weight, and exposing the resulting product for about 45 minutes to about 2 hours, at ambient temperature or above and at atmospheric pressure to the action of an aqueous solution of a silver, copper, lead, tin or mercury salt with a concentration of about 3% to about 10% by weight.
Claim 8
Dependent Claim
24 words
The method of claim 5 wherein the fiber is subjected to the action of an aqueous solution of thioacetamide or thiourea at atmospheric pressure.
Claim 9
Dependent Claim
22 words
The method of claim 5 wherein the silver, copper, lead, tin or mercury salt is a chloride, a nitrate or a sulfate.
References Cited (Backward Citations)
DE75056C
Cited
DE508206C
Cited
US3259559A
Cited
US3261711A
Cited
US3516848A
Cited
US3499881A
Cited
US3607350A
Cited
US3684554A
Cited
US3666552A
Cited
US3682786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |