Expansible chamber devices
Patent
1976-06-14
1978-10-17
Lieberman, Allan
Expansible chamber devices
260876R, 260885, 521134, C08J 906, C08L 2706, C08L 3308, C08L 4900
Patent
active
041208331
ABSTRACT:
A modifier system for extruding PVC foam comprising two separate core-shell polymers, the shells of which are substantially ungrafted to the cores. Also disclosed is an improved process for extruding PVC foam and improved extruded PVC foam composition and articles.
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Grant R. Peter
Purvis Marshall T.
Fein Michael B.
Johnson Lester E.
Lieberman Allan
Rohm and Haas Company
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