Electrically conducting fiber and method of making same
First Claim
1. An electrically conducting fiber comprising a synthetic or natural starting fiber having cyanic groups introduced therein which is impregnated with copper sulfide.
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Abstract
Electrically conducting fibers are prepared by introducing cyanic groups into a synthetic or natural starting fiber and then subjecting the fiber to a heat treatment with a copper compound, a reducing agent capable of reducing bivalent copper ions to monovalent copper ions, and a sulfur-containing compound capable of discharging a sulfur atom or sulfur ion for reaction with monovalent copper ions adsorbed by the fiber so that copper sulfide is impregnated into the fibers. Heat treatment with the sulfur-containing compound can be simultaneous with or separate from heat treatment with the copper compound and reducing agent. The electrically conducting fibers of the present invention have excellent conductivity, improved washability and are not plagued by the problem of static charging associated with the starting synthetic or natural fiber.
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23 Claims
- 1. An electrically conducting fiber comprising a synthetic or natural starting fiber having cyanic groups introduced therein which is impregnated with copper sulfide.
- 11. A method of making an electrically conducting fiber comprising heat treating at least one synthetic or natural starting fiber having cyanic groups introduced therein with a copper compound, a reducing agent capable of reducing bivalent copper ions to monovalent copper ions, and a sulfur-containing compound to adsorb copper sulfide within said starting fiber containing said cyanic groups.
Specification