US 2003/0194789 A1 · Novel polyhydroxyalkanoate copolymer including unit having bromo group in side chain and method for producing the same

Abstract

The invention provides polyhydroxyalkanoate having a bromo group in a unit and being thermally stable and capable of arbitrarily controlling physical properties, and a producing method thereof. According to the invention, there are provided a polyhydroxyalkanoate copolymer including a 3-hydroxy-ω-bromoalkanoic acid unit represented by a formula —[OCH((CH2)nBr)CH2C(O)]— (n=1 to 8) (1) and a unit represented by a formula —[OCH((CH2)mR)CH2C(O)]— (2) within a same molecule, and a method for producing a polyhydroxyalkanoate copolymer by microorganisms, utilizing a ω-bromoalkanoic acid represented by a formula Br(CH2)pCH2CH2COOH (p=1 to 8) (20) and a compound represented by a formula R(CH2)qCH2CH2COOH (21) as raw materials. (In the formulae, R designates a residue selected from the group consisting of a phenyl structure, a thienyl structure and a cyclohexyl structure. m and q are integers selected from 1 to 8 respectively, provided it may be 0 when R designates the cyclohexyl structure. n and p designate integers within the ranges in the formulae respectively. These respective residues and integers in one unit are independent of respective one in another unit.)

Claims16

Dependent claims

A polyhydroxyalkanoate copolymer comprising a 3-hydroxy-ω-bromoalkanoic acid unit represented by a chemical formula (1) and a unit represented by a chemical formula (2) within a same molecule:

49
wherein n designates a number within a range shown in the chemical formula and can be different from that of another unit in the same molecule;
50
wherein a pair of R and m is selected from the group consisting of R including a residue having a phenyl structure and m being an integer selected from 1 to 8, R including a residue having a thienyl structure and m being an integer selected from 1 to 8;
and R includes a residue having a cyclohexyl structure and m being an integer selected from 0 to 8;
and, in case plural units are present, the pair of R and m of one unit can be different from that of another unit in the same molecule.

3 more elements

A method for producing a polyhydroxyalkanoate copolymer including at least a kind of a 3-hydroxy-ω-bromoalkanoic acid unit represented by the chemical formula (1) and at least a kind of a unit represented by the chemical formula (2) within a same molecule, comprising the step of executing a biosynthesis by a microorganism having an ability of producing a polyhydroxyalkanoate copolymer including at least a kind of the 3-hydroxy-ω-bromoalkanoic acid unit represented by the chemical formula (1) and at least a kind of the unit represented by the chemical formula (2) within a same molecule, wherein at least a kind of ω-bromoalkanoic acid represented by a chemical formula (20) and at least a kind of a compound represented by a chemical formula (21) is utilized as the raw materials:

63
wherein p is an integer selected within a range indicated in the chemical formula,
64
wherein a pair of R and q is selected from the group consisting of R including a residue having a phenyl structure and q being an integer selected from 1 to 8, R including a residue having a thienyl structure and q being an integer selected from 1 to 8, and R including a residue having a cyclohexyl structure and q being an integer selected from 0 to 8,
65
wherein n designates, independently for each unit, a number within a range shown in the chemical formula,
66
wherein a pair of R and m is selected from the group consisting of R including a residue having a phenyl structure and m being an integer selected from 1 to 8, R including a residue having a thienyl structure and m being an integer selected from 1 to 8, and R includes a residue having a cyclohexyl structure and m being an integer selected from 0 to 8, and, in case plural units are present, the pair of R and m of one unit can be different from that of another unit in the same molecule.

5 more elements

Dependencies are inferred from the claim text.

Novel polyhydroxyalkanoate copolymer including unit having bromo group in side chain and method for producing the same

Life of this patent

Novel polyhydroxyalkanoate copolymer including unit having bromo group in side chain and method for producing the same

Life of this patent

Abstract

Claims16