Prepolymer compositions for insulating foams
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Apr 22, 2003
Grant Date -
N/A
app pub date -
May 15, 2000
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, wherein a polyisocyanate with a content of less than 2 wt %, based on the prepolymer component, of monomeric isocyanate is used.
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