Polyether-polycarbonate diols and processes for their production and use
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United States of America Patent
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Feb 28, 1989
Grant Date -
N/A
app pub date -
May 11, 1988
filing date -
May 21, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Polyether polycarbonate diols based on 1,6-hexanediol and having a molecular weight of from 500 to 12,000 are made by etherifying 50-100 mole % 1,6-hexane-diol in the presence of 0-50 mole % of specified diols and reacting the resultant polyether with a compound selected from diarylcarbonates, dialkyl carbonates, dioxolanones, hexanediol bischlorocarbonic acid esters, phosgene and urea. These diols are particularly useful in the production of polyurethanes having improved physical properties.
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