Preparation of cellular polyurethane elastomers using polyether carbonate diols as a starting component
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United States of America Patent
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Dec 22, 1992
Grant Date -
N/A
app pub date -
Jan 6, 1992
filing date -
Jan 25, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for the preparation of cellular polyurethane elastomers involves reacting a) an organic and/or modified organic polyisocyanate with b) a polyether polycarbonate diol which contains bonded polyoxytetramethylene glycol radicals having a mean molecular weight Mn (number average) of from 150 to 500, and, if desired, c) a low-molecular-weight chain extender and/or crosslinking agent, in the presence of d) a blowing agent, e) a catalyst and f) if desired additives and/or assistants.
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