Reaction injection molding based on diethyl methylene diphenyl diisocyanate
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United States of America Patent
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Mar 30, 1993
Grant Date -
N/A
app pub date -
Dec 19, 1991
filing date -
Dec 19, 1991
priority date (Note) -
Expired
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Abstract
Disclosed herein is an improved polyurea system comprising a reaction product of a polyisocyanate and a polyamine and an amine chain extender, the improvement comprising the polyisocyanate containing diethyl methylene diisocyanate, a prepolymer thereof or a mixture thereof, in an amount sufficient to slow down the reaction for use in a reaction injection molding.
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