Copolymer comprising alkylene carbonate and method of preparing same
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United States of America Patent
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Mar 30, 2004
Grant Date -
Jan 16, 2003
app pub date -
May 14, 2002
filing date -
Oct 11, 2000
priority date (Note) -
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Abstract
Disclosed are copolymers including an alkylene carbonate, and a method of preparing the same. The copolymers are represented by Formulas 1 and 2, and they are prepared with terpolymerized lactide or delta-valerolactone, carbon dioxide, and alkylene oxide, in the presence of a catalyst. ##STR1## (wherein, --O--A-- is an opened alkylene oxide structure, the alkylene oxide being selected from the group consisting of ethylene oxide, propylene oxide, 1-butene oxide, 1,1-dimethylethylene oxide, cyclopentene oxide, cyclohexene oxide, 1-phenylethylene oxide, 1-vinylethylene oxide, and 1-trifluoromethylethylene oxide; and x and y are independently an integer being equal to or less than 2,000, n is an integer, and n=(z-x-y), wherein z is an integer being equal to or less than 20,000.).
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