Moldable silane-crosslinked polyolefin foam beads
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United States of America Patent
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-
Sep 26, 1989
Grant Date -
N/A
app pub date -
Jul 15, 1987
filing date -
Feb 24, 1987
priority date (Note) -
Expired
status (Latency Note)
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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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