Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 12, 2010
Patent Application Number
11950181
Date Filed
December 4, 2007
Patent Primary Examiner
Patent abstract
Processes for preparing random polytrimethylene ether ester are provided. The processes include contacting 1,3-propanediol with a suitable polymerization catalyst, wherein the 1,3-propanediol comprises about 10 microg/g or less peroxide compounds, based on the weight of 1,3-propanediol, and about 100 microg/g or less carbonyl compounds based on the weight of the 1,3-propanediol.
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