US 4,792,645 AGranted

Process for producing electroconductive fibrous shaped-articles

AssigneesAgency of Industrial Science and Technology, Toda Kogy Corp.

InventorsYukimichi Nakao, Kyoji Kaeriyama, Yoshio Suda, Tomoyuki Imai, Osamu Oze, Nanao Horiishi

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Abstract

Disclosed herein is a process for producing electroconductive fibrous shaped-articles comprising the steps of: soaking water-absorptive fibrous shaped-articles in a palladium hydrosol containing a cationic surfactant, an anionic surfactant, a non-ionic surfactant or a mixture thereof, and after (i) drying the thus treated shaped-articles, (ii) washing the thus treated shaped-articles with water or (iii) washing the thus treated shaped-articles and then drying, subjecting the thus obtained, shaped-articles on which colloidal palladium is adsorbed to chemical plating, thereby obtaining the electroconductive fibrous shaped-articles of which fibers thereof are subjected to metallizing plating.

Claims28

Dependent claims

A process for producing electroconductive fibrous shaped-articles comprising the steps of:

(a) preparing a palladium hydrosol by treating an aqueous solution of a palladium (II) salt with a reductant in the presence of a least a cationic surfactant, an anionic surfactant, a non-ionic surfactant or a mixture thereof,
(b) soaking a water-absorptive fibrous shaped-article in the form of paper or non-woven fabrics having the capacity to allow said palladium hydrosol to penetrate into the inner portion of the paper or non-woven fabric being soaked,
(c) removing said soaked shaped-article from said palladium hydrosol and treating said soaked shaped-article by either:
(i) drying said soaked shaped-article, or
(ii) washing said soaked shaped-article with water, or
(iii) washing said soaked shaped-article with water and drying said washed soaked shaped-article, and
(d) chemical plating said treated soaked shaped-articles of step (c), thereby obtaining electroconductive fibrous shaped-articles.

4 more elements

Electroconductive fibrous shaped-article prepared by a process comprising the steps of:

(a) preparing a palladium hydrosol by treating an aqueous solution of a palladium (II) salt with a reductant in the presence of at least a cationic surfactant, an anionic surfactant, a non-ionic surfactant or a mixture thereof,
(b) soaking a water-absorptive fibrous shaped-article in the form of paper or non-woven fabrics having the capacity to allow said palladium hydrosol to penetrate into the inner portion of the paper or non-woven fabric being soaked,
(c) removing said soaked shaped-article from said palladium hydrosol and treating said soaked shaped-article by either:
(i) drying said soaked shaped-article, or
(ii) washing said soaked shaped-article with water, or
(iii) washing said soaked shaped-article with water and drying said washed soaked shaped-article, and
(d) chemical plating said treated soaked shaped-articles of step (c), thereby obtaining electroconductive fibrous shaped-articles.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/770,095Filed 28 Aug 1985
Priority: JP 59-1840693 Sep 1984
Granted: 20 Dec 1988
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

C23C 18/28
Of organic surfaces, e.g. resins: sensitising or activating
D06M 11/83
Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such…
Y10T 428/12444
All metal or with adjacent metals: embodying fibers interengaged or between layers [e.g., paper, etc.]
Y10T 428/12493
All metal or with adjacent metals: composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]