Rigid polyurethane foams
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United States of America Patent
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Jul 23, 2002
Grant Date -
N/A
app pub date -
Feb 25, 2000
filing date -
Feb 25, 2000
priority date (Note) -
Expired
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Abstract
Polyurethane foams containing a syntactic phase and a cellular, non-syntactic phase are useful as reinforcing foams, such as in automotive applications. The foams are conveniently made in the reaction of a high viscosity isocyanate-reactive component and a high-viscosity polyisocyanate component, at least one of which contains a plurality of hollow microspheres.
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