Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Donghui Zhang0
William B. Tolman0
Marc A. Hillmyer0
Date of Patent
May 11, 2010
Patent Application Number
11545092
Date Filed
October 6, 2006
Patent Primary Examiner
Patent abstract
A synthetic route is provided to prepare poly(ω-hydroxycarboxylic acid) polymers via the ring-opening polymerization of ω-hydroxycarboxylic acid cyclic oligomers. The cyclic oligomers can be prepared directly from biorenewable sources, such as 3-hydroxypropionic acid. The method can be used to prepare high molecular weight polymers from the cyclic oligomers. Good molecular weight control can be obtained for both solution state and melt polymerizations.
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