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:
To provide a novel polyhydroxyalkanoate having a reactive functional group in a molecule and a method of producing the same; and a novel polyhydroxyalkanoate having a new function obtained by chemically modifying the polyhydroxyalkanoate having a reactive functional group and a method of producing the same. By utilizing a vinyl group of a polyhydroxyalkanoate containing a unit having the vinyl group at a side chain thereof, a polyhydroxyalkanoate containing units having a carboxyl group, an amide group, and a sulfonic group in a molecule is induced.
摘要:
A novel polyhydroxyalkanoate having a reactive functional group in a molecule, and a production method thereof, etc. are provided. By utilizing the vinyl group of polyhydroxyalkanoate which contains a unit having a vinyl group on a side chain, a polyhydroxyalkanoate which contains a carboxyl group and a unit having an amide group and a sulfonic acid group in a molecule is derived.
摘要:
To provide: a charge control agent having negative chargeability, which contributes to environmental conservation and the like to an increased degree, has high performance (high charge amount, quick rise-up of charge, excellent stability with time, and high environmental stability), and has improved dispersibility; a toner for developing an electrostatic charge image containing the charge control agent; and an image forming method and an image forming apparatus each using the toner for developing an electrostatic charge image. A charge control agent for controlling a charged state of powder, characterized by including one or more units each represented by the following chemical formula (1) in a molecule.
摘要:
The invention is to provide a novel polyhydroxyalkanoate having a reactive function group within the molecule and a producing method therefor In a polyhydroxyalkanoate containing a unit having a vinyl group in a side chain, such vinyl group is utilized for deriving a polyhydroxyalkanoate comprising a carboxyl group or a unit having an amide group and a sulfonic acid group.
摘要:
The invention is to provide a novel polyhydroxyalkanoate having a reactive functional group within a molecule, a novel polyhydroxyalkanoate having a novel function by a chemical modification of the polyhydroxyalkanoate having the reactive functional group, and a producing method therefor. A polyhydroxyalkanoate containing a unit having a carboxyl group in a side chain is utilized for deriving a polyhydroxyalkanoate containing a unit having an amide group and a sulfonic acid group in the molecule.
摘要:
Provided is a polyhydroxyalkanoate containing in a molecule thereof one or more units each selected from the following formulae (1) (2), (3) and (4): wherein R1 and R6 are each OH, halogen, ONa, OK, OCH3 or OC2H5; A1 and J6 are each a substituted or unsubstituted aliphatic hydrocarbon; m and n are each 0 to 7; r is 1 to 500; and R1′ to R5′ are each hydrogen or halogen.
摘要翻译:提供一种分子中含有一个或多个选自下式(1)(3)和(4)中的单元的聚羟基链烷酸酯:其中R 1和R 6 每个OH,卤素,ONa,OK,OCH 3或OC 2 H 5; A 1和J 6各自为取代或未取代的脂族烃; m和n各自为0至7; r为1〜500; R 1至R 5'各自为氢或卤素。
摘要:
A polyhydroxyalkanoate comprises a unit of formula (1): —(O—CH((CH2)mSASO2R)CH2C(═O))— wherein R is selected from the group consisting of OH, a halogen atom, ONa, OK, OCH3 and OC2H5; A represents a substituted or unsubstituted aliphatic hydrocarbon structure; m is an integer number selected from 1 to 8; and in the case where a plurality of units exist in the same molecule, R, A and m in one unit can be different from them in another unit respectively. A method of producing the polyhydroxyalkanoate comprises the step of reacting a polyhydroxyalkanoate comprising a unit of formula (18): —(O—CH((CH2)mBr)CH2C(═O))—, wherein m is an integer number selected from 1 to 8, and in the case where a plurality of units exist in the same molecule, m in one unit can be different from that in another unit, with at least one type of compounds of formula (19): HS-A1-SO2R15 wherein R15 is selected from the group consisting of OH, a halogen atom, ONa, OK, OCH3 and OC2H5 and A1 is a substituted or unsubstituted aliphatic hydrocarbon structure, and in the case where a plurality of types of compounds exist in the same molecule, R15 and A1 in one unit can be different from them in another unit respectively.
摘要翻译:聚羟基链烷酸酯包含式(1)的单元: - (O-CH((CH 2)2)NH 2 R 2 CH 2 (O)) - 其中R选自OH,卤素原子,ONa,OK,OCH 3和OC 2 SUB 5 H 5; A表示取代或未取代的脂族烃结构; m为选自1至8的整数; 并且在同一分子中存在多个单元的情况下,一个单元中的R,A和m可以分别与另一个单元中的不同。 制备聚羟基链烷酸酯的方法包括使包含式(18)单元的聚羟基链烷酸酯: - (O-CH((CH 2))m Br)CH (-O)) - ,其中m是选自1至8的整数,并且在同一分子中存在多个单元的情况下,一个单元中的m可以不同 与另一单元中的至少一种式(19)的化合物:HS-A 1 -SO 2 R 15其中 R 15选自OH,卤素原子,ONa,OK,OCH 3和OC 2 H 5 并且A 1是取代或未取代的脂族烃结构,在同一分子中存在多种类型的化合物的情况下,R 15和 一个单元中的1 <1> SUB>可以分别与另一个单元中的不同。
摘要:
A polymer is provided in which a sulfonic group or a derivative thereof is introduced. The polymer includes a unit represented by the following chemical formula (1): wherein R represents -A1-SO2R1; A1 is selected from an alkylene group, a heterocyclic ring, an aromatic ring; and —SO2R1 is a sulfonic group or of a derivative of a sulfonic acid.
摘要翻译:提供其中引入了磺酸基或其衍生物的聚合物。 聚合物包括由下列化学式(1)表示的单元:其中R表示-A1-SO2R1; A1选自亚烷基,杂环,芳香环, 和-SO 2 R 1是磺酸基或磺酸衍生物。
摘要:
A developer carrying member is disclosed which can prevent a toner from being excessively charged in a developing assembly while keeping the charge quantity of the toner at a somewhat higher level, and seldomly causes toner melt adhesion to the developer carrying member. The developer carrying member contains a polymer having a unit represented by the chemical formula (1):