Stabilized polypropylene compositions

Details Stabilized polypropylene compositions Stabilized polypropylene compositions

1982-06-21

1983-04-26

Lieberman, Allan

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524451, 524513, 525173, C08L 2312

Patent

active

043813569

ABSTRACT:
Disclosed are plastic grade polypropylene compositions suitable for molding and extrusion, which contain an inert particulate filler material such as talc and a copolyester which greatly increases the heat stability of articles produced therefrom. The polypropylene is semi-crystalline, isotactic, having a density equal to or greater than 0.90. The copolyesters used in the composition of this invention are described as amorphous polyesters derived at least in part from terephthalic acid and diethylene glycol or 1,4-cyclohexanedimethanol.

REFERENCES:
patent: 3223752 (1965-12-01), Tate
patent: 3431322 (1969-04-01), Caldwell
patent: 3457216 (1969-07-01), Dew
patent: 4046837 (1977-09-01), Carroll
patent: 4341690 (1982-07-01), Marsh

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