PROCESS FOR NICKELING PLASTICS MATERIALS

1,192,621. Etching. FARBWERKE HOECHST A.G. 5 May, 1967 [5 May, 1966], No. 21017/67. Heading B6J. [Also in Divisions B1, C7 and H1] Fluorine-free, chlorine-free, bromine-free plastics are etched with an aqueous chlorine or bromine solution, with a liquid chlorohydrocarbon such as chlorobenzene, carbo...

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Bibliographische Detailangaben
1. Verfasser:	WALTER HERWIG
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Zusammenfassung:	1,192,621. Etching. FARBWERKE HOECHST A.G. 5 May, 1967 [5 May, 1966], No. 21017/67. Heading B6J. [Also in Divisions B1, C7 and H1] Fluorine-free, chlorine-free, bromine-free plastics are etched with an aqueous chlorine or bromine solution, with a liquid chlorohydrocarbon such as chlorobenzene, carbon tetrachloride, chloroform or tetrachloroethylene, or with a current of chlorine or bromine containing water vapour. Plastics containing fluorine are first treated with an alkali metal solution of, for example, sodium or potassium in liquid ammonia or phosphoric acid tridimethylamide, then are etched with an aqueous chlorine or bromine solution or wtih a current of bromine or chlorine and water vapour. The materials etched may be in the form of powders, granules or sheets and may include polyethylene, polypropylene, polyvinyl chloride, polytetrafluor. ethylene, polytrioxan, polyethylene terephthalate and phenol-formaldehyde resins.