Dimensionally-stable polypropylene foam expanded with inorganic

Details Dimensionally-stable polypropylene foam expanded with inorganic Dimensionally-stable polypropylene foam expanded with inorganic

1994-06-28

1996-10-22

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 82, 521 94, 521 97, 521 98, C08J 912, C08J 914

Patent

active

055677428

ABSTRACT:
Disclosed is a low density, dimensionally-stable, extruded propylene polymer foam comprising primarily of an expanded propylene polymer material wherein the foam has a blowing agent comprising at least 15 percent by weight of one or more inorganic blowing agents. The propylene polymer material comprises at least about 15 weight percent of propylene monomeric units. The foam has a density of from about 10 to about 150 kilograms per cubic meter. The foam having an average cell wall thickness of less than about 35 micrometers.

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