Polypropylene interior parts for autocars

Details Polypropylene interior parts for autocars Polypropylene interior parts for autocars

1985-06-25

1987-01-20

Lieberman, Allan M.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525323, C08L 2316, C08L 5300

Patent

active

046380302

ABSTRACT:
Polypropylene interior parts for autocars having overcome the drawback of their permanent bulge or secondary deformation due to high temperature exposure is provided, which parts are obtained by molding a material comprising a propylene-ethylene block copolymer prepared by polymerizing propylene at a first stage so that the resulting propylene homopolymer can have a relation between its isotactic pentad ratio (P) and MFR of

REFERENCES:
patent: 4500734 (1985-12-01), Fujishita et al.

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