Lightly crosslinked linear olefinic polymer foams and...

Details Lightly crosslinked linear olefinic polymer foams and... Lightly crosslinked linear olefinic polymer foams and...

B - Operations, Transporting

29

C

18/661

B29C 67/20 (2006.01) C08J 9/00 (2006.01)

Patent

CA 1247816

ABSTRACT A substantially closed-celled linear poly- olefin foam is made by melt processing under pressure a linear polyolefin together with a volatile blowing agent and a cross-linking agent and then expanding the polymer. Suitable cross-linking agents, includ- ing azido and vinyl functional silanes, organic peroxides, multifunctional vinyl monomers, and oxygen, increase the melt tension and melt viscosity of the polymer by lightly cross-linking the polymer with itself to enable the production of foams having improved properties in comparison with branched polyolefin foams.

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