Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1992-02-11
1993-10-26
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 89, 525 95, 525240, C08L 5302, C08L 906, C08L 2312
Patent
active
052567346
ABSTRACT:
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.degree. C. and a load of 2.16 kg/cm.sup.2. 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 lighter.
REFERENCES:
patent: 4687804 (1987-08-01), Shiraishi et al.
patent: 5026752 (1991-06-01), Wakabayashi et al.
WIPL, AN 82-48939E & JP-A-57073034 *Abstract*.
Hoshino Minoru
Sekiguchi Katsumi
Suehiro Keigo
Sugihara Eiichi
Clark W. R. H.
Mitsui Toatsu Chemicals Inc.
Seidleck James J.
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