Fine-celled polyolefin foam materials

Details Fine-celled polyolefin foam materials Fine-celled polyolefin foam materials

1998-05-27

1999-07-27

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 79, 521 98, 521142, 521143, 521134, C08J 900

Patent

active

059291273

ABSTRACT:
Fine-celled polyolefin foams of high dimensional stability at elevated temperatures and high stiffness, with foam densities ranging from 10 to 600 kg/m.sup.3, consisting of mixtures of polypropylenes and polyolefins, which were reacted with bifunctional, unsaturated monomers and/or hydrolyzable, ethylenically unsaturated organosilane compounds in the presence of thermally decomposing free radical-forming agents in two reactive process steps and subsequently foamed. The fine-celled polyolefin foams are suitable for use in the packaging sector, preferably for packaging foods, for external and internal parts of motor vehicles and for components of electric and electronic equipment.

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patent: 4702868 (1987-10-01), Pontiff et al.
patent: 4870111 (1989-09-01), Pontiff et al.
patent: 5605937 (1997-02-01), Knaus
patent: 5643969 (1997-07-01), Sugamo et al.

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