Polymer and method for production thereof
AssigneeKanegafuchi Kagaku Kogyo Kabushiki Kaisha
InventorsTakeshi Shiotani, Genta Kobayashi
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Abstract
The present invention is directed to a copolymer containing a unit represented by Formula (1): ##STR1## wherein Y represents a hydrocarbon residue having 1 to 13 carbon atoms which may have 1 to 4 double bonds. A method for production thereof comprises the steps of culturing microorganisms of the genus Pseudomonas under limitation of nutrients other than carbon sources using a medium containing long-chain fatty acids having 14 to 22 carbon atoms or lower alcohol esters thereof, or triglycerides comprising long-chain fatty acids having 14 to 22 carbon atoms as carbon sources; washing the bacterial cells after completion of cultivation; extracting the bacterial cells; and recovering a polyester from the extracts.
Claims21
A polymer comprising a group of repeating units represented by Formula (1):
- ##STR6## wherein Y represents a hydrocarbon residue having 12 to 13 carbon atoms which may have 1 to 4 double bonds, and wherein said group is a member selected from the group consisting of a unit having a carbon number of 4, a unit having a carbon number of 6, a unit having a carbon number of 8, a unit having a carbon number of 10, a unit having a carbon number of 12, a unit having a carbon number of 14, and a unit having a carbon number of 16.
A Pseudomonas fluorescens capable of synthesizing a polymer containing a unit represented by Formula (1):
- ##STR7## wherein Y represents a hydrocarbon residue having 1 to 13 carbon atoms which may have 1 to 4 double bonds.
A method for producing a polymer containing a unit represented by Formula (1):
- ##STR8## wherein Y represents a hydrocarbon residue having 1 to 13 carbon atoms which may have 1 to 4 double bonds comprising the steps of culturing a microorganism of the genus Pseudomonas under limitation of nutrients other than carbon sources using a medium containing at least one long-chain fatty acid having 14 to 22 carbon atoms or a lower alcohol ester thereof, or a triglyceride comprising a long-chain fatty acid having 14 to 22 carbon atoms as carbon atoms as carbon sources;
- washing the bacterial cells after completion of cultivation;
- extracting said bacterial cells;
- and recovering a polyester from the extract.
Dependencies are inferred from the claim text.