NOVEL POLYHYDROXYALKANOATE, ITS PRODUCTION METHOD, CHARGE CONTROLLER, TONER BINDER, TONER, IMAGE FORMATION METHOD USING THE TONER, AND IMAGE FORMATION APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a polyester which is freed from the drawback of thermal properties (the narrowness of the scope of application to moldings or films due to the lowness of a glass transition temperature and of a melting point) as seen in a conventional polyester and the drawback of chargeability and having performances satisfactory for especially a charge controller and to provide its application. SOLUTION: There are provided a polyhydroxyalkanoate containing at least one unit selected from the group consisting of units (1), (2), (3) and (4) in the image; and a method for producing the same; and application of the same to e.g., a charge controller. In the image, R1and R6are each OH, a halogen atom, ONa, OK, OCH3, or OC2H5; R'1to R'5are each a hydrogen atom or a halogen atom; A1and J6are each a substituted or unsubstituted aliphatic hydrocarbon structure; m and n are each an integer in the range of 0-7; and r is an integer in the range of 1-500, provided that when a plurality of units are present, R1, R6, R'1to R'5, A1, J6, m, n, and r are as defined above and are independent in every unit. COPYRIGHT: (C)2004,JPO