Moldable silane-crosslinked polyolefin foam beads

Details Moldable silane-crosslinked polyolefin foam beads Moldable silane-crosslinked polyolefin foam beads

C - Chemistry, Metallurgy

08

J

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C08J 9/22 (2006.01) B29B 9/06 (2006.01) B29C 44/34 (2006.01) C08J 9/16 (2006.01) C08J 9/228 (2006.01) C08J 9/24 (2006.01) C08L 23/02 (2006.01)

Patent

CA 1297629

ABSTRACT OF THE DISCLOSURE Moldable foam beads comprising a silane-crosslinked polyolefin foam are produced by mixing a composition comprising a silane-modified polyolefin (such as a silane-grafted polyethylene) and a silanol condensation catalyst in an extruder to produce a melt, then injecting a blowing agent into the melt at a rate effective to produce a desired foam density in the extrudate; extruding and cutting the melt to form foam beads; and exposing the foam beads to moisture to produce silane crosslinking of the polyolefin foam.

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