Expandable polypropylene interpolymer particles

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

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521 56, 521 60, 521139, C08J 918

Patent

active

046669469

ABSTRACT:
Blends of polypropylene-poly(vinyl aromatic monomer) interpolymer with certain polymers and/or rubbers can be impregnated with blowing agents to give products which can be expanded under atmospheric steam conditions to give low density, fine cell structure foam particles.

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patent: 4622347 (1986-11-01), Fudge

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