Crystalline unsaturated polyester and the preparation thereof
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United States of America Patent
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Jun 13, 1989
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N/A
app pub date -
Jul 24, 1987
filing date -
Dec 21, 1984
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Expired
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Abstract
The invention relates to crystalline unsaturated polyester, consisting of segments derived from a mainly hydroxy-terminated, unsaturated polyester, bound through urethane bonds to units derived from a (poly)isocyanate and further, if desired, in an amount that is at most relatively small, units, bound via urethane bonds, that are derived from a diol containing between 2 and 12 carbon atoms and/or from a diamine containing between 2 and 12 carbon atoms and/or from an alkanolamine containing between 2 and 12 carbon atoms.
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