Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
John Robert Moxey0
Elizabeth Dixon0
Date of Patent
November 28, 2006
0Patent Application Number
104320210
Date Filed
November 28, 2001
0Patent Primary Examiner
Patent abstract
A block copolymer is disclosed, which comprises a first block comprising polymerized units of an alkylene oxide and a second block comprising polymerized units of an alkylene oxide and a lactone, said copolymer being obtainable by polymerizing an alkylene oxide in the presence of an organic initiator to form said first block, and reacting the first block with a mixture of an alkylene oxide and a lactone. Such copolymers are found to have improved foam inhibition characteristics while maintaining their biodegradable properties.
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