摘要:
To provide a resin-coated carrier for an electrophotographic developer capable of providing an image with excellent image quality; and a two-component developer and a replenishing developer each of which contains the resin-coated carrier as a constituent. A resin-coated carrier for an electrophotographic developer, including: a core; and a resin coating layer containing a polyhydroxyalkanoate containing one or more units each represented by the following chemical formula (1) in a molecule, the resin coating layer being placed on the core:
摘要:
There is provided a resin-coated carrier with a coating layer attached to the surface of a core material in a stable manner, the electrophotographic carrier which can provide an image with excellent quality. The resin-coated carrier of the present invention comprises a resin-coating layer comprising, on a core material, a polymer comprising a unit represented by the formula (1):
摘要:
The present invention provides a negataively chargeable charge controlling agent to control a charged state of a powder or granular material such as toner for electrophotography, where the agent comprises a polyhydroxyalkanoate having at least one kind of 3-hydroxy-ω-carboxyalkanoic acid unit represented by the chemical formula (1): wherein n is an integer selected from 1 to 8; R1 is an H, Na or K atom, or and when more than one unit exists, n and R1 is the same or different between the units. The charge controlling agent is excellent in electrophtographic properties and propitious to environment because of the biodegradability of the polyhydroxyalkanoate. wherein n is an integer selected from the range shown in the same chemical formula; R1 is an H atom, Na atom, K atom, or and when more than one unit exists, n and R1 may differ from unit to unit.
摘要翻译:本发明提供一种负电荷电荷控制剂,用于控制电子照相用调色剂等粉末或颗粒状物质的带电状态,其中该试剂包含具有至少一种3-羟基-ω-羧酸烷基酯的聚羟基链烷酸酯单元, 化学式(1):其中n是选自1至8的整数; R 1是H,Na或K原子,或者当存在多于一个单元时,单元之间的n和R 1相同或不同。 电荷控制剂由于聚羟基链烷酸酯的生物降解性而具有优异的电泳性质和有利于环境的作用。 其中n是选自相同化学式所示范围的整数; R 1是H原子,Na原子,K原子,或者当存在多于一个单元时,n和R 1可以不同于单元。
摘要:
A polyhydroxyalkanoate is disclosed which has in the molecule a unit represented by Chemical Formula (1). wherein R is arbitrarily selected from a hydrogen atom, a halogen atom, CN, NO2, COOR′, SO2R″, CH3, C2H5, C3H7, C(CH3)2H and C(CH3)3; where R′ is H, Na, K, CH3 or C2H5, and R″ is OH, ONa, OK, a halogen atom, OCH3 or OC2H5; and x is an integer arbitrarily selected from 1 to 8; with the proviso that a polyhydroxyalkanoate is excluded which has a hydrogen atom as R and x in all the units is 2 or 4. Also disclosed is a process for producing the polyhydroxyalkanoate by the use of a microorganism having the ability to produce the polyhydroxyalkanoate and accumulate it in the bacterial body.
摘要翻译:公开了在分子中具有由化学式(1)表示的单元的聚羟基链烷酸酯。 其中R可以任选地选自氢原子,卤原子,CN,NO 2,COOR',SO 2 R“,CH 3 C 2 H 3,C 3 H 3,C(CH 3)3 H 3,C 3 H 3, 2)H和C(CH 3 3)3。 其中R'是H,Na,K,CH 3或C 2 H 5,并且R“是OH,ONa,OK, 卤原子,OCH 3或OC 2 H 5; x是任意选自1至8的整数; 条件是排除了具有氢原子作为R的聚羟基链烷酸酯,并且所有单元中的x均为2或4.还公开了通过使用具有生产聚羟基链烷酸酯的能力的微生物来生产聚羟基链烷酸酯并累积 它在细菌体内。