A PROCESS FOR PREPARING A PLASTIC ARTICLE

• Main Authors: WEBER WILHELM, FRISCH DAVID CRAIG
• Format: Patent
• Language: English
• Published: 03.06.1989
• Edition: 4
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; 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; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; PERFORMING OPERATIONS; PRINTED CIRCUITS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Catalytically imaged thermosetting and thermoplastic resin objects inclusing printed circuit boards are provided. An adhesion promoted and thus hydrophilic insulating base material is treated in selected areas to produce metallic nuclei catalytic to electroless metal deposition in the form of an image of a desired metal pattern. The image is exposed to an electroless metal plating bath to reinforce the image. Then, the non-imaged areas of the base material are rendered hydrophobic by means of solvent treatment. The imaged areas are built up by metal deposition. Preferably the solvent treatment of the non-imaged areas of the base material is repeated.