Moldable silane-crosslinked polyolefin foam beads

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

1987-07-15

1989-09-26

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 56, 521 79, 521 81, 521 91, 521134, 521143, 521154, C08V 922, C08V 924

Patent

active

048701114

ABSTRACT:
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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