B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
400/1000, 402/15
B29C 67/22 (1985.01)
Patent
CA 1211247
ABSTRACT OF THE DISCLOSURE High quality plastic foam and the like expanded products and articles are made by incorporating a blowing agent in an acid-containing alkenyl aromatic polymer, such an a copolymer of styrene and acrylic acid; extruding while cross-linking the polymer with a polyfunctional cross-linking agent.
456407
Bearden Charles R.
Corbett John M.
Smart & Biggar
The Dow Chemical Company
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