Method for the preparation of styrene polymer foam and foam...

B - Operations – Transporting – 29 – C

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B29C 67/20 (2006.01) C08J 9/12 (2006.01)

Patent

CA 1259155

ABSTRACT Styrene polymer foam is prepared using a mixed blowing agent of carbon dioxide plus ethyl chloride and optionally a fluorocarbon to provide a foam having primary cells and secondary cells formed in the struts and walls.

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