Polypropylene resin composition and method for manufacturing...

Details Polypropylene resin composition and method for manufacturing... Polypropylene resin composition and method for manufacturing...

C - Chemistry, Metallurgy

08

L

C08L 51/04 (2006.01) C08J 7/04 (2006.01) C08K 3/00 (2006.01) C08L 23/10 (2006.01) C08L 23/02 (2006.01) C08L 53/02 (2006.01)

Patent

CA 2061094

A resin composition is herein provided which comprises 100 parts by weight of a polypropylene and 20 to 100 parts by weight of a hydrogenated styrene/butadiene or styrene/isoprene elastomeric block copolymer having a melt index of not less than 25 g/10 min as determined at a temperature of 230°C and a load of 2.16 kg/cm2. A method for manufacturing a coated molded article of the resin composition is herein provided and the method comprises the steps of molding said resin composition and then applying a coating directly without any preliminary surface treatment. This method can provide a molded article having low mold shrinkage factor and linear expansion coefficient, makes it possible to reduce the amount of fillers to be incorporated and is thus effective for making the weight of automobiles more lighter.

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