Polypropylene resin expanded particles

Details Polypropylene resin expanded particles Polypropylene resin expanded particles

1995-03-01

1995-11-21

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 56, 521 58, C08J 922, C08J 9228

Patent

active

054687810

ABSTRACT:
There are provided polypropylene resin expanded particles which have a uniform bubble size, can be molded with an exceptionally low steam pressure, and can produce an expanded molded product having a good surface appearance and an excellent energy absorption property. The present particles are polypropylene resin expanded particles containing as a base resin an isotactic polypropylene resin polymerized in the presence of a metallocene polymerization catalyst.

REFERENCES:
patent: 4108934 (1978-08-01), Rubens et al.
Database WPI, Derwent Publications Ltd., AN 250936, JP-A-2 175 227, Jul. 6, 1990.

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