摘要:
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. R1 is selected from OH, a halogen atom, ONa, OK, and OR1a. R1a and A1 are 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.)
摘要翻译:在分子中含有至少一个由化学式(1)表示的单元的聚羟基链烷酸酯。 聚羟基链烷酸酯是具有增强的熔融加工性的生物可降解塑料,当用作电子照相方法中的调色剂的电荷控制剂时,显示出优异的充电稳定性,高充电性和增强的分散性。 (R表示-A 1)(-SO 2 R 1 R 1) SUB>选自OH,卤素原子,ONa,OK和OR 1a。R 1a和A 1选自取代的 取代或未取代的芳香族环结构,取代或未取代的芳香族环结构,取代或未取代的杂环结构,m和x为1〜8的整数,当存在2个以上的单元时,R 1,R 2, 对于每个单元,单独地对上述独立地定义如上所述的基团,其中R 1,R 1,R 1,
摘要:
A novel polyhydroxyalkanoate having a monomer unit represented by the formula (1), the unit having a carboxyl group substituting a ring structure at the end of side chain, obtainable by oxydizing vinyl or methyl group substituting a ring structure at the end of the side chain. The polyhydroxyalkanoate has high thermal stability, charge stablity, a high charge amount, improved dispersibility and biodegradability together, and therefore, suitable for resin moldings, and binders and charge controlling agents for toners used in the electrophotographic process.
摘要:
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. R1 is selected from OH, a halogen atom, ONa, OK, and OR1a. R1a and A1 are 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, R1 R1a, A1, m, and x is defined as above independently for each of the units.)
摘要翻译:在分子中含有至少一个由化学式(1)表示的单元的聚羟基链烷酸酯。 聚羟基链烷酸酯是具有增强的熔融加工性的生物可降解塑料,当用作电子照相方法中的调色剂的电荷控制剂时,显示出优异的充电稳定性,高充电性和增强的分散性。 (R表示-A 1)(-SO 2 R 1 R 1) SUB>选自OH,卤素原子,ONa,OK和OR 1a。R 1a和A 1选自取代的 取代或未取代的芳香族环结构,取代或未取代的芳香族环结构,取代或未取代的杂环结构,m和x为1〜8的整数,当存在2个以上的单元时,R 1,R 2, 对于每个单元,单独地独立地定义如上所定义的A 1,R 1,m和x。
摘要:
The invention provides a novel polyester adapted for use in a charge control agent for a toner for an electrophotographic process, having a charge stability, a high charge amount, an improved dispersibility and a biodegradability, and a producing method and an application technology therefore. According to the invention, there is provided polyhydroxyalkanoate comprising at least one unit represented by the following chemical formula in a molecule: —(O—CH(—(CH2)m—CH2-p-C6H4—CONH-A1SO2R1)CH2CO)— (wherein R1 represents OH, a halogen atom, ONa, OK or OR1a; A1 and R1a each represents a substituted or unsubstituted aliphatic hydrocarbon structure, a substituted or unsubstituted aromatic cyclic structure or a substituted or unsubstituted heterocyclic structure; m represents an integer selected from a range of 0 to 7; and R1, A1, R1a and m have the aforementioned meanings independently for each unit when plural units are present), a charge control agent containing such polyhydroxyalkanoate, a toner utilizing such charge control agent, and an image forming method and an image forming apparatus utilizing such toner.
摘要:
A novel polyhydroxyalkanoate having a monomer unit represented by the formula (1), the unit having a carboxyl group substituting a ring structure at the end of side chain, obtainable by oxydizing vinyl or methyl group substituting a ring structure at the end of the side chain. The polyhydroxyalkanoate has high thermal stability, charge stablity, a high charge amount, improved dispersibility and biodegradability together, and therefore, suitable for resin moldings, and binders and charge controlling agents for toners used in the electrophotographic process.
摘要:
A polyhydroxyalkanoate copolymer comprises one kind of unit of —[OCH((CH2)x—SOC6H5R)CH2CO]— (n=1-7) (1) (wherein R is any one of H, halogen, CN, NO2, COOR′, SO2R″ (R′ is any one of H, Na, K, CH3 and C2H5; R″ is any one of OH, ONa, OK, halogen, OCH3 and OC2H5), CH3, C2H5, C3H7, (CH3)2—CH and (CH3)3—C) and —[OCH((CH2)x—SO2C6H5R)CH2CO]— (n=1-7) (2) (wherein R is any one of H, halogen, CN, NO2, COO R′, SO2R″ (R′ is any one of H, Na, K, CH3 and C2H5; R″ is any one of OH, ONa, OK, halogen, OCH3 and OC2H5), CH3, C2H5, C3H7, (CH3)2—CH and (CH3)3—C) and at least one unit of chemical formulae (3) to (6): —[OCH((CH2)m—Rz)CH2CO]— (n=1-8) (3) (wherein Rz comprises a residue having either a phenyl structure or a thienyl structure), —[OCH((CH2)k—C6H11Ra)CH2CO]— (n=1-8) (4) (wherein Ra is any one of H, CN, NO2, halogen, CH3, C2H5, C3H7, CF3, C2F5 and C3F7) —[OCH((CH2)n—CH═CH2)CH2CO]— (n=1-8), and (5) —[OCH((CH2)n—COORb)CH2CO]— (n=1-8) (6) (wherein Rb is any one of H, Na and K).
摘要:
To provide a toner for developing electrostatic images which is not easily cause the phenomenon of toner-spent, constituent materials are so selected that a charge control resin has hardness which is the same as the hardness of a binder resin or the charge control resin is harder than the binder resin, as measured with a scanning probe microscope in a viscoelasticity evaluation mode in respect to the binder resin and the charge control resin which are present in the particle interiors or particle surfaces of the toner.
摘要:
The invention provides a 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.
摘要:
Provided are a PHA having an active group, which is produced by microorganisms with high productivity, and in which the ratio of units on its side chain having an active group can be controlled and the physical properties can be arbitrarily controlled so that its application as a polymer is not limited, and a method for producing the same. A 3-hydroxy-ω-[(phenylmethyl)oxy]alkanoic acid unit expressed by the following chemical formula (1): wherein x can be one or more integers within the range shown in the chemical formula.
摘要:
The invention provides a novel polyester adapted for use in a charge control agent for a toner for an electrophotographic process, having a charge stability, a high charge amount, an improved dispersibility and a biodegradability, and a producing method and an application technology therefor. According to the invention, there is provided polyhydroxyalkanoate comprising at least one unit represented by the following chemical formula in a molecule: —(O—CH(—(CH2)m—CH2-p-C6H4—CONH-A1SO2R1)CH2CO)— (wherein R1 represents OH, a halogen atom, ONa, OK or OR1a; A1 and R1a each represents a substituted or unsubstituted aliphatic hydrocarbon structure, a substituted or unsubstituted aromatic cyclic structure or a substituted or unsubstituted heterocyclic structure; m represents an integer selected from a range of 0 to 7; and R1, A1, R1a and m have the aforementioned meanings independently for each unit when plural units are present), a charge control agent containing such polyhydroxyalkanoate, a toner utilizing such charge control agent, and an image forming method and an image forming apparatus utilizing such toner.