Prepolymer composition for insulating foams
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United States of America Patent
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Apr 25, 2000
Grant Date -
N/A
app pub date -
Oct 16, 1995
filing date -
Feb 10, 1993
priority date (Note) -
Expired
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Abstract
A prepolymer composition for producing polyurethane insulating foams from pressure tanks which consists of a prepolymer component with at least one PU prepolymer with a content of NCO groups of 4 to 20 wt % and usual additives, as well as a propellant component, with a content of 0.01 to 2 wt %, based on the prepolymer component, of polybutadiene.
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