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31. 发明授权

US5316882A Ferrite green beads and method of producing carrier particles 失效
标题翻译：铁氧体绿珠和生产载体颗粒的方法
公开(公告)号：US5316882A
公开(公告)日：1994-05-31
申请号：US53560
申请日：1993-04-23
申请人： Shankar S. Bijay , Tsang J. Chen
发明人： Shankar S. Bijay , Tsang J. Chen
IPC分类号： G03G9/10 , G03G9/107
CPC分类号： G03G9/107 , G03G9/10
摘要： A green bead composite for the manufacture of magnetic carrier particles for electrophotography is disclosed. The composite comprises a synthetic polyester or polyurethane as the binder for metal oxide and other metal salt particles. The dried, nonmagnetic green beads are prepared by a spray-drying process. The green beads so prepared are suitable for the production of magnetic carrier particles for electrophotographic development.
摘要翻译：公开了一种用于制造用于电子照相术的磁性载体颗粒的绿色珠粒复合材料。复合材料包括合成聚酯或聚氨酯作为金属氧化物和其它金属盐颗粒的粘合剂。干燥的非磁性绿色珠粒通过喷雾干燥方法制备。如此制备的绿色珠子适用于生产用于电子照相显影的磁性载体颗粒。

32. 发明授权

US4824902A Latex composition comprising polycarbonate having tertiary amine acid addition moiety 失效
标题翻译：乳胶组合物包含具有叔胺酸加成部分的聚碳酸酯
公开(公告)号：US4824902A
公开(公告)日：1989-04-25
申请号：US91249
申请日：1987-08-31
申请人： Tsang J. Chen
发明人： Tsang J. Chen
IPC分类号： C08G64/16 , C08J3/07 , C08G63/62
CPC分类号： C08J3/07 , C08G64/1608 , C08G64/1641 , C08J2369/00
摘要： Novel polycarbonate latex compositions comprising 0.1 to 30 mole percent of recurring units containing a carboxyl or a tertiary amine acid addition salt component are disclosed.The latex compositions are made by:(a) preparing a polycarbonate comprising from about 0.1 to 30 mole percent of recurring units having a carboxyl or a tertiary amine acid addition component;(b) dissolving the polycarbonate in a water miscible solvent having a boiling point below about 100.degree. C.;(c) blending the solution of (b) with water; and(d) removing the water-miscible solvent.
摘要翻译：公开了包含0.1至30摩尔％的含羧基或叔胺酸加成盐组分的重复单元的新型聚碳酸酯胶乳组合物。胶乳组合物通过以下制备：（a）制备包含约0.1至30摩尔％的具有羧基或叔胺酸添加组分的重复单元的聚碳酸酯; （b）将聚碳酸酯溶解在沸点低于约100℃的水混溶性溶剂中; （c）将（b）的溶液与水混合; 和（d）除去水混溶性溶剂。

33. 发明授权

US4684608A Latex compositions comprising loadable polymeric particles 失效
标题翻译：胶乳组合物包含可装载的聚合物颗粒
公开(公告)号：US4684608A
公开(公告)日：1987-08-04
申请号：US800197
申请日：1985-11-21
申请人： James W. Brown , Tsang J. Chen , Michael A. Schen
发明人： James W. Brown , Tsang J. Chen , Michael A. Schen
IPC分类号： C08F20/28 , C08F20/58 , G03C1/04 , G03C1/835 , G03C7/388 , G03C1/02
CPC分类号： G03C1/835 , C08F20/28 , C08F20/58 , G03C1/04 , G03C7/3882
摘要： A latex composition having utility in articles such as photographic elements is disclosed. The composition comprises loadable polymer particles having recurring units a, b and c wherein:component a is 10 to 100 weight percent of a tetrahydrofurfuryl monomer having the structure: ##STR1## in which R.sub.1 represents O or NH; andR.sub.2 represents H or lower alkyl of about 1 to 6 carbon atoms;component b is 0 to 20 weight percent of a hydrophilic monomer andcomponent c is 0 to 90 weight percent of a hydrophobic monomer.
摘要翻译：公开了一种在诸如照相元件的物品中具有效用的胶乳组合物。组合物包含具有重复单元a，b和c的可负载聚合物颗粒，其中：组分a为10至100重量％的具有以下结构的四氢糠基单体：其中R 1表示O或NH; 并且R 2表示H或具有约1至6个碳原子的低级烷基; 组分b是0至20重量％的亲水性单体，组分c为0至90重量％的疏水单体。

34. 发明授权

US4608424A Latex compositions comprising loadable polymeric particles 失效
公开(公告)号：US4608424A
公开(公告)日：1986-08-26
申请号：US660157
申请日：1984-10-12
申请人： James W. Brown , Tsang J. Chen , Michael A. Schen
发明人： James W. Brown , Tsang J. Chen , Michael A. Schen
IPC分类号： C08F20/28 , C08F20/58 , G03C1/04 , G03C1/835 , G03C7/388 , C08F30/04
CPC分类号： C08F20/58 , C08F20/28 , G03C1/04 , G03C1/835 , G03C7/3882
摘要： A latex composition having utility in articles such as photographic elements is disclosed. The composition comprises loadable polymer particles having recurring units a, b and c wherein:component a is 10 to 100 weight percent of a tetrahydrofurfuryl monomer having the structure: ##STR1## in which R.sub.1 represents O or NH; andR.sub.2 represents H or lower alkyl of about 1 to 6 carbon atoms;component b is 0 to 20 weight percent of a hydrophilic monomer andcomponent c is 0 to 90 weight percent of a hydrophobic monomer.

35. 发明授权

US4578333A Multilayer photoconductive elements having an acrylonitrile copolymer interlayer 失效
标题翻译：具有丙烯腈共聚物中间层的多层光电导元件
公开(公告)号：US4578333A
公开(公告)日：1986-03-25
申请号：US643768
申请日：1984-08-24
申请人： William J. Staudenmayer , Tsang J. Chen , Paul M. Borsenberger , Hans R. Grashof
发明人： William J. Staudenmayer , Tsang J. Chen , Paul M. Borsenberger , Hans R. Grashof
IPC分类号： G03G5/10 , G03G5/14
CPC分类号： G03G5/102 , G03G5/142
摘要： In photoconductive elements having a conductive support, a charge generation layer containing a photoconductive pigment such as a perylene compound and a charge transport layer, an acrylonitrile copolymer interlayer is disposed between the charge generating layer and the support. This interlayer provides the element with improved adhesion and increased photosensitivity.
摘要翻译：在具有导电载体的光电导元件中，在电荷产生层和载体之间设置含有苝化合物和电荷输送层等光导性颜料的电荷产生层，丙烯腈共聚物中间层。该中间层为元件提供了改善的粘附性和增加的光敏性。

36. 发明授权

US4304769A Process for achieving uniform, efficient distribution of hydrophobic materials through hydrophilic colloid layers and loaded latex compositions 失效
标题翻译：用于通过亲水胶体层和负载的胶乳组合物均匀，有效地分配疏水性材料的方法
公开(公告)号：US4304769A
公开(公告)日：1981-12-08
申请号：US882282
申请日：1978-02-27
申请人： Tsang J. Chen
发明人： Tsang J. Chen
IPC分类号： G03C1/005 , G03C1/37 , G03C7/388 , A01N25/22 , A01N57/00
CPC分类号： G03C7/3882 , G03C1/005 , G03C1/37
摘要： An improved process is disclosed for uniformly dispersing hydrophobic materials through a hydrophilic colloid layer such as, for example, a photographically useful layer containing gelatin. The process over which the present invention is a valuable improvement comprises the steps:(a) forming an aqueous dispersion by intermixing the hydrophobic material and an aqueous polymeric latex, optionally including gelatin in the dispersion;(b) forming a wet layer by coating onto a suitable support the aqueous dispersion from step (a); and(c) thereafter removing a substantial proportion of the water from the wet layer through which the hydrophobic material is dispersed.The present process relates particularly to improvements in step (a), wherein the "aqueous dispersion" is formed by blending a loadable polymeric latex into a solution of the hydrophobic material dissolved in a water-miscible solvent using techniques which avoid coagulation of the hydrophobic material or the particles of the latex. Removal of the water-miscible solvent results in the hydrophobic material being sorbed ("loaded") directly onto and through the particles of latex without coagulating the latex. Use of this process provides products having valuable, unexpected properties, possibly due to a combination of the size and the nature of the loaded particles. The process is particularly advantageous in achieving a distribution of hydrophobic material in small particles within a hydrophilic colloid layer or aqueous medium.
摘要翻译：公开了一种通过亲水胶体层均匀分散疏水性材料的改进方法，例如含有明胶的照相用层。本发明是有价值的改进方法包括以下步骤：（a）通过将疏水性材料和水性聚合物胶乳混合而形成水性分散体，任选地在分散体中包括明胶; （b）通过将来自步骤（a）的水分散体涂覆在合适的载体上形成湿层; 和（c）此后从疏水材料分散的湿层中除去相当大部分的水。本方法特别涉及步骤（a）中的改进，其中“水性分散体”是通过使用避免疏水材料凝结的技术将可加载的聚合物胶乳混合到溶解在水混溶性溶剂中的疏水性材料的溶液中形成的或胶乳的颗粒。去除水混溶性溶剂导致疏水性材料直接吸附（“加载”）到胶乳颗粒上并通过胶乳颗粒而不凝结胶乳。该方法的使用提供了具有有价值的意想不到的性质的产品，这可能是由于加载的颗粒的尺寸和性质的组合。该方法在实现疏水材料在亲水胶体层或水性介质中的小颗粒中的分布特别有利。

37. 发明授权

US4199363A Processes for achieving uniform, efficient distribution of hydrophobic materials through hydrophilic colloid layers and loaded latex compositions 失效
标题翻译：用于通过亲水胶体层和负载的胶乳组合物实现疏水材料的均匀，有效分配的方法
公开(公告)号：US4199363A
公开(公告)日：1980-04-22
申请号：US956943
申请日：1978-11-03
申请人： Tsang J. Chen
发明人： Tsang J. Chen
IPC分类号： C08J3/215 , C08L33/06 , G03C1/005 , G03C1/053 , G03C7/388 , G03C1/84 , G03C1/10 , G03C1/40
CPC分类号： C08J3/215 , C08L33/06 , G03C1/005 , G03C1/053 , G03C7/3882
摘要： An improved process is disclosed for uniformly dispersing hydrophobic materials through a hydrophilic colloid layer such as, for example, a photographically useful layer containing gelatin. The process over which the present invention is a valuable improvement comprises the steps:(a) forming an aqueous dispersion by intermixing the hydrophobic material and an aqueous polymeric latex, optionally including gelatin in the dispersion;(b) forming a wet layer by coating onto a suitable support the aqueous dispersion from step (a); and(c) thereafter removing a substantial proportion of the water from the wet layer through which the hydrophobic material is dispersed.The present process relates particularly to improvements in step (a), wherein the "aqueous dispersion" is formed by blending a loadable polymeric latex into a solution of the hydrophobic material dissolved in a water-miscible solvent using techniques which avoid coagulation of the hydrophobic material or the particles of the latex. Removal of the water-miscible solvent results in the hydrophobic material being sorbed ("loaded") directly onto and through the particles of latex without coagulating the latex. Use of this process provides products having valuable, unexpected properties, possibly due to a combination of the size and the nature of the loaded particles. The process is particularly advantageous in achieving a distribution of hydrophobic material in small particles within a hydrophilic colloid layer or aqueous medium.
摘要翻译：公开了一种通过亲水胶体层均匀分散疏水性材料的改进方法，例如含有明胶的照相用层。本发明是有价值的改进方法包括以下步骤：（a）通过将疏水性材料和水性聚合物胶乳混合而形成水性分散体，任选地在分散体中包括明胶; （b）通过将来自步骤（a）的水分散体涂覆在合适的载体上形成湿层; 和（c）此后从疏水材料分散的湿层中除去相当大部分的水。本方法特别涉及步骤（a）中的改进，其中“水性分散体”是通过使用避免疏水材料凝结的技术将可加载的聚合物胶乳混合到溶解在水混溶性溶剂中的疏水性材料的溶液中形成的或胶乳的颗粒。去除水混溶性溶剂导致疏水性材料直接吸附（“加载”）到胶乳颗粒上并通过胶乳颗粒而不凝结胶乳。该方法的使用提供了具有有价值的意想不到的性质的产品，这可能是由于加载的颗粒的尺寸和性质的组合。该方法在实现疏水材料在亲水胶体层或水性介质中的小颗粒中的分布特别有利。

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