Alcohol control of lightly crosslinked foamed polymer...

Details Alcohol control of lightly crosslinked foamed polymer... Alcohol control of lightly crosslinked foamed polymer...

C - Chemistry, Metallurgy

08

J

403/64

C08J 9/14 (2006.01) C08J 3/24 (2006.01)

Patent

CA 1272349

Abstract An expandable olefin or styrene polymer composition for production of lightly crosslinked foamed polymers and a process for controlling the degree of crosslinking of the polymer prior to extrusion foaming is disclosed. The control is obtained by use of (a) a reversible gas-yielding crosslinking reaction which is delayed in the foam extrusion line in the presence of gaseous products (alcohols) and (b) added amounts of an alcohol such as an aliphatic alcohol. Suitable crosslinking agents include silanes, azido functional silanes, titanates, and amino compounds.

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