Polypropylene-base resin composition

Details Polypropylene-base resin composition Polypropylene-base resin composition

1986-03-28

1987-11-10

Lilling, Herbert J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523212, 523214, 523216, 523217, 524423, 524424, 524426, 524433, 524436, 524437, 524444, 524445, 524451, 524450, 524494, 524505, 525 88, 264 25, C08K 904, C08K 334, C08K 326, C08K 306

Patent

active

047058188

ABSTRACT:
Disclosed herein is a polypropylene-base resin composition obtained by heating at a temperature of 170.degree. C.-280.degree. C. a mixture containing a crystalline ethylene-propylene block copolymer having a specific composition, an ethylene-propylene copolymer rubber having a specific composition and viscosity, an inorganic filler having a specific particle size, and an organic peroxide, all in specified amounts. The thus-obtained polypropylene-base resin composition has high molding fluidity and are inexpensive and their moldings have excellent low-temperature impact resistance and paintability along with high stiffness. They are thus suitable for use in the production of large moldings such as automobile bumpers, fenders and body sidemembers.

REFERENCES:
patent: 4087485 (1978-05-01), Huff
patent: 4088714 (1978-05-01), Huff
patent: 4220579 (1980-09-01), Rinehart
patent: 4480065 (1984-10-01), Kawai et al.
patent: 4552689 (1985-11-01), Yui et al.

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