Method of enhancing open cell formation in alkenyl aromatic poly

Details Method of enhancing open cell formation in alkenyl aromatic poly Method of enhancing open cell formation in alkenyl aromatic poly

1997-06-23

1999-10-05

Cooney, Jr., John M.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 79, 521 81, 521 82, C08J 912

Patent

active

059625457

ABSTRACT:
Disclosed is a method of enhancing open cell formation in making extruded alkenyl aromatic polymer foams of about 30 percent or more open cell content. Open cell formation is enhanced by incorporating into the foam an ethylene copolymer having a Vicat softening point of about 85.degree. C. or less. The ethylene copolymer is incorporated at from about 0.1 to about 7 percent based upon the weight of the alkenyl aromatic polymer material comprising the foam.

REFERENCES:
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patent: 5340840 (1994-08-01), Park et al.
patent: 5434195 (1995-07-01), Imeokparia et al.
patent: 5557896 (1996-09-01), Imeokparia et al.

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