Method of treating the surfaces of shaped articles of polycarbonate resins

• Main Authors: INOUE, SHOICHI, TANIYAMA, SUSUMU, SHIMAOKA, GORO
• Format: Patent
• Language: English
• Published: 23.12.1980
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; GENERAL PROCESSES OF COMPOUNDING; INKS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING-UP

A method of treating the surface of a shaped article of a polycarbonate resin, which comprises coating the shaped article of the polycarbonate resin with a specific pre-treating solution (I), air-drying the coated article, then coating the article with a specific coating composition (II), and heat-curing the coated article. The pre-treating solution (I) contains a bisphenol type epoxy resin in a mixed solvent of a lower alcohol and an alkyl ether of ethylene glycol, and the coating composition (II) comprises (A) a reaction mixture of an aminoalkylalkoxy silane of the formula (1) with an epoxyalkylalkoxy silane of the formula (2); (B) a mixture of an alkyl-modified methylol melamine of the formula (3) with an alkyd resin; and (C) an acrylic acid derivative of the formula (5) or its polymer of a low degree of polymerization, the formulas (1), (2), (3) and (5) being given in the claim.