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    • 1. 再颁专利
    • Polycarbonate resin and electrophotographic photosensitive member using same
    • 聚碳酸酯树脂和使用其的电子照相感光构件
    • USRE43604E1
    • 2012-08-28
    • US13020572
    • 2005-05-19
    • Takaaki Hikosaka
    • Takaaki Hikosaka
    • G03G5/05C08G64/18
    • C08G64/186G03G5/0564G03G5/0578
    • Provided are a polycarbonate resin which can solve problems present in an electrophotographic photoreceptor and an electrophotographic photoreceptor in which the above polycarbonate resin is used and which is improved in a cleaning property, a lubricity and an abrasion resistance.The polycarbonate resin comprises a repetitive unit represented by the following Formula (1), and the electrophotographic photoreceptor in which a photosensitive layer is provided on a conductive substrate contains the above polycarbonate resin in the above photosensitive layer. In the following Formula (1), R represents an alkyl group having 1 to 3 carbon atoms; n1 is an integer of 2 to 4; and n2 is an integer of 1 to 200.
    • 提供一种聚碳酸酯树脂,其可以解决使用上述聚碳酸酯树脂的电子照相感光体和电子照相感光体中存在的问题,并提高了清洗性,润滑性和耐磨性。 聚碳酸酯树脂包括由下式(1)表示的重复单元,并且在导电性基材上设置感光层的电子照相感光体在上述感光层中含有上述聚碳酸酯树脂。 在下式(1)中,R表示碳原子数1〜3的烷基。 n1为2〜4的整数, n2为1〜200的整数。
    • 3. 发明申请
    • Polycarbonate Resin and Electrophotographic Photosensitive Member Using Same
    • 聚碳酸酯树脂和使用其的电子照相感光构件
    • US20070241312A1
    • 2007-10-18
    • US11596849
    • 2005-05-19
    • Takaaki Hikosaka
    • Takaaki Hikosaka
    • G03G5/05C08G64/18
    • C08G64/186G03G5/0564G03G5/0578
    • Provided are a polycarbonate resin which can solve problems present in an electrophotographic photoreceptor and an electrophotographic photoreceptor in which the above polycarbonate resin is used and which is improved in a cleaning property, a lubricity and an abrasion resistance. The polycarbonate resin comprises a repetitive unit represented by the following Formula (1), and the electrophotographic photoreceptor in which a photosensitive layer is provided on a conductive substrate contains the above polycarbonate resin in the above photosensitive layer. In the following Formula (1), R represents an alkyl group having 1 to 3 carbon atoms; n1 is an integer of 2 to 4; and n2 is an integer of 1 to 200.
    • 提供一种聚碳酸酯树脂,其可以解决使用上述聚碳酸酯树脂的电子照相感光体和电子照相感光体中存在的问题,并提高了清洗性,润滑性和耐磨性。 聚碳酸酯树脂包括由下式(1)表示的重复单元,并且在导电性基材上设置感光层的电子照相感光体在上述感光层中含有上述聚碳酸酯树脂。 在下式(1)中,R表示碳原子数1〜3的烷基。 n1为2〜4的整数, n2为1〜200的整数。
    • 5. 发明申请
    • ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND RESIN COMPOSITION
    • 电子照相机和树脂组合物
    • US20140011128A1
    • 2014-01-09
    • US14001419
    • 2012-03-13
    • Hironobu MorishitaTakaaki Hikosaka
    • Hironobu MorishitaTakaaki Hikosaka
    • G03G5/07
    • G03G5/076C08L69/00G03G5/056G03G5/0564G03G5/14752G03G5/14756
    • An electrophotographic photoreceptor that satisfies excellent transparency, abrasion resistance, and electrophotographic properties (including sensitivity and residual potential after light irradiation) all together is provided. Specifically, an electrophotographic photoreceptor and a resin composition that include therein (1) a polycarbonate resin (A) having a structural unit represented by the following formula (I) and (2) at least one selected from a polycarbonate resin (B) synthesized from a source material that includes therein a bisphenol represented by the following formula (II) and a polyester resin (B′) synthesized from a source material that includes therein a bisphenol represented by the following formula (II). In formulas (I) and (II), each of Ra, Rb, Rc, Rd, Re, and Rf represents, independently from one another, a substituted or non-substituted alkyl group, a substituted or non-substituted cycloalkyl group, or a substituted or non-substituted phenyl group. Each of p, q, r, s, t, and u represents, independently from one another, an integer of 0 to 4. Rg represents an alkyl group. X represents an alkylene group, an isopropylidene group, a sec-butylidene group, a cycloalkylene group, a cycloalkylidene group, or the like. Y represents a single bond or —O—. Each of mA and nA represents a composition ratio (mole ratio) of the structural unit in the round brackets.
    • 提供了一起满足优异的透明性,耐磨性和电子照相特性(包括光照射后的灵敏度和残留电位)的电子照相感光体。 具体而言,是电子照相感光体和树​​脂组合物,其中含有(1)具有下述通式(I)和(2)表示的结构单元的聚碳酸酯树脂(A)和(2)中的至少一种选自聚碳酸酯树脂 在其中包含由下式(II)表示的双酚的源材料和由其中包含由下式(II)表示的双酚的源材料合成的聚酯树脂(B')。 在式(I)和(II)中,Ra,Rb,Rc,Rd,Re和Rf各自独立地表示取代或未取代的烷基,取代或未取代的环烷基,或 取代或未取代的苯基。 p,q,r,s,t和u各自独立地表示0〜4的整数.Rg表示烷基。 X表示亚烷基,异亚丙基,仲丁叉基,亚环烷基,亚环烷基等。 Y表示单键或-O-。 mA和nA中的每一个表示圆括号中的结构单元的组成比(摩尔比)。
    • 10. 发明申请
    • POLYCARBONATE COPOLYMER, METHOD FOR PRODUCING THE SAME, MOLDED BODY, OPTICAL MATERIAL, AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE BODY
    • 聚碳酸酯共聚物,其制造方法,成型体,光学材料和电摄影光敏体
    • US20090326184A1
    • 2009-12-31
    • US12375451
    • 2007-10-18
    • Takaaki HikosakaYasushi Hamada
    • Takaaki HikosakaYasushi Hamada
    • C08G64/04
    • C08F6/00C08G64/00C08G64/04G02B1/04G03G5/0564G03G5/14756C08L69/00
    • A polycarbonate copolymer contains: 0.1 to 50 mol % of a monomer unit represented by the following formula (1); and a monomer unit represented by the following formula (2). In the polycarbonate copolymer, the content of biphenols having a structure represented by the following formula (3) is 90 mass ppm or less. In the formula, R1 and R2 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom. In the formula: R3 and R4 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom; and X represents any one of bonding groups represented by —O—, —S—, —SO—, —SO2—, —CO— and 9,9-fluorenylidene group. In the formula, R1 and R2 each independently represent a hydrogen atom, an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms or a halogen atom.
    • 聚碳酸酯共聚物含有:下述通式(1)所示的单体单元为0.1〜50摩尔%。 和由下式(2)表示的单体单元。 在聚碳酸酯共聚物中,具有由下式(3)表示的结构的联苯的含量为90质量ppm以下。 式中,R 1和R 2各自独立地表示氢原子,碳原子数1〜6的脂肪族烃基,碳原子数6〜12的芳基或卤素原子。 式中,R 3和R 4分别独立地表示氢原子,碳原子数1〜6的脂肪族烃基,碳原子数6〜12的芳基或卤原子。 X表示由-O - , - S - , - SO - , - SO 2 - , - CO-和9,9-亚芴基表示的键合基团中的任何一个。 式中,R 1和R 2各自独立地表示氢原子,碳原子数1〜6的脂肪族烃基,碳原子数6〜12的芳基或卤素原子。