Polyisocyanurate foam with chloropropane blowing agent
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United States of America Patent
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-
Nov 12, 1991
Grant Date -
N/A
app pub date -
Mar 2, 1990
filing date -
Mar 3, 1989
priority date (Note) -
Expired
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Abstract
A polyisocyanurate foam or a with polyurethane modified polyisocyanurate foam having a mainly closed cell structure and also a method for preparing this foam, the latter comprising closed cells wherein chloropropane, preferably 2-chloropropane, whether or not with another gas, is enclosed.
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