Process for foaming cellulose acetate rod

Details Process for foaming cellulose acetate rod Process for foaming cellulose acetate rod

1983-05-26

1985-03-26

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264 455, 264DIG5, 264DIG13, 521 90, 525433, 528370, B29D 2700

Patent

active

045072566

ABSTRACT:
A new process for foaming cellulose acetate rods consists of blending the cellulose acetate with a suitable plasticizer, a nucleating agent, cyclic ethylene carbonate, and a co-reactant for the ethylene carbonate and extruding into a foamed rod. Suitable co-reactants include aromatic diol polyesters, polycarbonates, and poly(ester-carbonates) and monomeric or polymeric materials containing the ##STR1## group, which have melting or flow points of less than about 250.degree. C.

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