Substantially closed cell shaped hard phenol foam and method for preparing that phenol foam
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United States of America Patent
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Apr 24, 1990
Grant Date -
N/A
app pub date -
Apr 14, 1989
filing date -
Jan 3, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A phenol foam and a method for preparing substantially closed cell shaped resins on the basis of the condensation product between, on the one hand an either or not substituted phenol and/or phenol derivative and, on the other hand an aldehyde by using a blowing means for forming a hard phenol foam, whereby a physical blowing means comprising chlorine-propane is used.
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