Polyhydroxyalkanoate containing amide group, sulfonic group,...

Details Polyhydroxyalkanoate containing amide group, sulfonic group,... Polyhydroxyalkanoate containing amide group, sulfonic group,...

2008-07-01

2008-07-01

Seidleck, James (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

C528S271000, C528S274000, C424S078370, C430S108220, C430S110200, C430S110200

Reexamination Certificate

active

07393912

ABSTRACT:
A polyhydroxyalkanoate containing in a molecule at least one unit represented by the chemical formula (1). The polyhydroxyalkanoate is a biodegradable plastic with enhanced melt-processability and exhibits excellent charging stability, high chargeability, and enhanced dispersibility when used as a charge control agent of a toner in an electrophotographic process.(R denotes -A1(—SO2R1)x. R1is selected from OH, a halogen atom, ONa, OK, and OR1a. R1aand A1are selected from a substituted or unsubstituted aliphatic hydrocarbon structure, a substituted or unsubstituted aromatic ring structure, and a substituted or unsubstituted heterocyclic structure. Further, m and x are integers selected from 1 to 8, and when two or more units exist, each of R, R1R1a, A1, m, and x is defined as above independently for each of the units.)

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