Impact resistant polyureaurethane and polyureaurethane prepolymer having low NCO/OH ratio
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United States of America Patent
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Dec 5, 2006
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N/A
app pub date -
Nov 5, 2002
filing date -
Nov 16, 2001
priority date (Note) -
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Abstract
The present invention relates to a polyureaurethane wherein the prepolymer comprising said polyureaurethane has a NCO to OH equivalent ratio of from 2.0 to less than 2.5. In an embodiment, the polyureaurethane prepolymer comprises a polyisocyanate and at least one OH-containing material, which can be reacted with an amine-containing curing agent to produce the polyureaurethane of the present invention.
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