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39 条记录 (耗时 0.019 秒)

    Layered photoreceptors with multiple transport layers
    2.
    发明授权
    Layered photoreceptors with multiple transport layers 失效
    具有多个传输层的分层光感受器

    公开(公告)号：US06027848A

    公开(公告)日：2000-02-22

    申请号：US786469

    申请日：1997-01-21

    申请人： Damodar M. Pai ,  William W. Limburg

    发明人： Damodar M. Pai ,  William W. Limburg

    IPC分类号： C08G64/16 ,  G03G5/047 ,  G03G5/07 ,  G03G13/22

    CPC分类号： G03G5/047 ,  C08G64/1641 ,  G03G5/076

    摘要： An electrophotographic imaging member including a supporting substrate; an optional charge blocking layer; an optional adhesive layer; a charge generating layer and at least two charge transport layers, each charge transport layer including a charge transporting polymer (a) including a backbone containing charge transporting moieties in the backbone, the moieties having a chemical structure different from the chemical structure of charge transporting moieties in the charge transport polymer of any charge transport layer lying closer to the charge generating layer, and (b) having a higher ionization potential than the charge transport polymer in any charge transport layer lying closer to the charge generating layer. This imaging member may be employed in an electrophotographic imaging process, particularly in high sensitivity infrared photoreceptors which are compatible with liquid ink development processes.

    摘要翻译： 一种电子照相成像构件，包括支撑衬底; 可选的电荷阻挡层; 可选粘合层; 电荷产生层和至少两个电荷传输层，每个电荷传输层包括电荷传输聚合物（a），其包含在主链中含有电荷传输部分的主链，所述部分具有不同于电荷传输部分的化学结构的化学结构 在更靠近电荷产生层的任何电荷传输层的电荷输送聚合物中，和（b）在靠近电荷产生层的任何电荷传输层中具有比电荷输送聚合物更高的电离电位。 该成像构件可以用于电子照相成像过程中，特别是在与液体油墨显影方法相容的高灵敏度红外感光体中。

    Copolymers of tyrosine-based polycarbonate and poly(alkylene oxide)
    8.
    发明授权
    Copolymers of tyrosine-based polycarbonate and poly(alkylene oxide) 失效
    酪氨酸基聚碳酸酯和聚（环氧烷）的共聚物

    公开(公告)号：US5658995A

    公开(公告)日：1997-08-19

    申请号：US562842

    申请日：1995-11-27

    申请人： Joachim B. Kohn ,  Chun Yu

    发明人： Joachim B. Kohn ,  Chun Yu

    IPC分类号： A61K47/34 ,  A61K47/48 ,  A61L27/00 ,  C08G63/672 ,  C08G63/685 ,  C08G64/16 ,  C08G64/18 ,  C08G69/40 ,  C08L69/00 ,  C08L77/00

    CPC分类号： A61K47/48215 ,  A61K47/48192 ,  A61K47/48246 ,  C08G63/6856 ,  C08G64/1641 ,  C08G64/183

    摘要： Random block copolymers having the formula: ##STR1## wherein R.sub.1 is --CH.dbd.CH-- or (--CH.sub.2 --).sub.j, in which j is zero or an integer from one to eight; R.sub.2 is selected from hydrogen, straight and branched alkyl and alkylaryl groups containing up to 18 carbon atoms and derivatives or biologically and pharmaceutically active compounds covalently bonded to said copolymer; each R.sub.3 is independently an alkylene group containing up to 4 carbon atoms; y is an integer between about 5 and about 3000; and f is the percent molar fraction of alkylene oxide in the copolymer and ranges between about 1 and about 99 mole percent. Implantable medical devices and drug delivery implants containing the random block copolymers are also disclosed, along with methods for drug delivery and for preventing the formation of adhesions between injured tissues employing the random block copolymers. Polyarylate random block copolymers are also described.

    摘要翻译： 其中R 1为-CH = CH-或（-CH 2 - ）j，其中j为0或1至8的整数; R2选自含有至多18个碳原子的氢，直链和支链烷基和烷基芳基以及与所述共聚物共价结合的衍生物或生物和药学活性化合物; 每个R 3独立地是含有至多4个碳原子的亚烷基; y为约5至约3000之间的整数; f是共聚物中环氧烷的摩尔百分比，在约1至约99摩尔％之间。 还公开了含有无规嵌段共聚物的植入式医疗装置和药物递送植入物，以及用于药物递送和用于使用无规嵌段共聚物的损伤组织之间形成粘连的方法。 还描述了聚芳酯无规嵌段共聚物。

    Photoconductive imaging members with N,N-bis(biarylyl)aniline charge transport polymers
    9.
    发明授权
    Photoconductive imaging members with N,N-bis(biarylyl)aniline charge transport polymers 失效
    具有N，N-双（二芳基）苯胺电荷传输聚合物的光导成像构件

    公开(公告)号：US4937165A

    公开(公告)日：1990-06-26

    申请号：US332206

    申请日：1989-04-03

    申请人： Beng S. Ong ,  Barkev Keoshkerian ,  Giuseppa Baranyi

    发明人： Beng S. Ong ,  Barkev Keoshkerian ,  Giuseppa Baranyi

    IPC分类号： C08G18/32 ,  C08G63/685 ,  C08G64/16 ,  G03G5/07

    CPC分类号： C08G64/1641 ,  C08G18/329 ,  C08G63/6856 ,  G03G5/075 ,  G03G5/076

    摘要： A photoconductive imaging member comprised of a photogenerating layer, and a charge transport layer comprised of the N,N-bis(biarylyl)aniline charge transport polymers of the formula ##STR1## wherein A and B are independently selected from bifunctional linkages; Z is alkylenedioxy, arylenedioxy, or substituted derivatives thereof; R and R' are alkyl, aryl, alkoxy, aryloxy, or halogen; x and y are mole fractions wherein x is greater than 0 and the sum of x and y is equal to 1.0; a and b are the numbers 0, 1 or 2; and n represents the number of monomer units.

    摘要翻译： 由光生代层和由N，N-双（二芳基）苯胺电荷输送聚合物组成的光电生成层，其中A和B独立地选自双官能键; Z是亚烷基二氧基，亚芳基二氧基或其取代衍生物; R和R'是烷基，芳基，烷氧基，芳氧基或卤素; x和y是摩尔分数，其中x大于0，x和y之和等于1.0; a和b是数字0,1或2; n表示单体单元数。