Polypropylene resin composition and method for coating...

C - Chemistry – Metallurgy – 08 – L

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C08L 9/00 (2006.01) B05D 3/06 (2006.01) B05D 7/02 (2006.01) B29C 59/14 (2006.01) C08J 3/28 (2006.01) C08J 7/04 (2006.01) C08L 23/10 (2006.01) C08L 23/16 (2006.01) C08L 47/00 (2006.01) C08L 53/00 (2006.01)

Patent

CA 2038307

Herein provided are a polypropylene resin composition which comprises (A) a polypropylene, (B) an ethylene-propylene-diene terpolymeric rubber having a Mooney viscosity, ML1+ ~ (100°C ), ranging from 5 to 50 and an iodine value of not less than 15, the content of the component (B) ranging from 10 to 50% by weight on the basis of the total weight of the components (A) and (B), and optionally (C) an inorganic filler in an amount ranging from 0 to 44 parts by weight per 100 parts by weight of the sum of the components (A) and (B); a coating method which comprises the steps of applying a primer coating to a molded product obtained by molding the foregoing polypropylene resin composition or irradiating the molded product with plasma without degreasing and washing the product with a halogen atom-containing organic solvent and then applying a top coat to the product; and a coating method which comprises the steps of degreasing and washing a molded product obtained by molding the foregoing polypropylene resin composition and then applying a top coat to the product without applying a primer coating to the molded product or irradiating the molded product with plasma. The coated film obtained according to the foregoing methods has good bond strength to the molded product.

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