Method for producing crystalline polyoxyalkylene polyol, and resin obtained by using the same as raw material
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United States of America Patent
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Jul 2, 2013
Grant Date -
May 13, 2010
app pub date -
Apr 24, 2008
filing date -
Apr 26, 2007
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Abstract
The present invention has its object to produce a highly reactive crystalline polyoxyalkylene polyol with a very high isotacticity at low cost, and provide polyurethane resins, and polyester resins which are excellent in sharp meltability. The present invention relates to a method for producing a crystalline polyoxyalkylene polyol having a number average molecular weight of 500 to 20,000 including performing ring-opening polymerization of an alkylene oxide (a) in the presence of a salen complex (B), the crystalline polyoxyalkylene polyol (A), and a polyurethane resin and a polyester resin produced by the crystalline polyoxyalkylene polyol (A).
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