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11. 发明授权

US5132190A Hydrozones and electrophotographic photoreceptors comprising them 失效
标题翻译：包含它们的氢氧化物和电子照相光电子器件
公开(公告)号：US5132190A
公开(公告)日：1992-07-21
申请号：US505273
申请日：1990-04-09
申请人： Yasuyuki Yamada , Hiroyuki Akahori , Katashi Enomoto , Hisato Itoh , Tsutomu Nishizawa , Akihiro Yamaguchi
发明人： Yasuyuki Yamada , Hiroyuki Akahori , Katashi Enomoto , Hisato Itoh , Tsutomu Nishizawa , Akihiro Yamaguchi
IPC分类号： C07C251/86 , G03G5/06
CPC分类号： C07C251/86 , G03G5/0616 , G03G5/0668 , C07C2103/18
摘要： A hydrazone compound represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each are an aryl group or collectively with the carbon to which they are attached form a polycyclic group; R.sub.3 represents a hydrogen or halogen atom or an alkyl or phenyl group; and R.sub.4 and R.sub.5 each represent an alkyl, aralkyl or aryl group, with the proviso that at least one of R.sub.4 and R.sub.5 is an aryl group, is useful as a charge-transporting material in an electrophotographic photoreceptor and are produced by condensing the corresponding aldehyde with the corresponding H.sub.2 N--NR.sub.4 R.sub.5 hydrazine.

12. 发明授权

US5525682A Superabsorbent polymer and process for producing same 失效
公开(公告)号：US5525682A
公开(公告)日：1996-06-11
申请号：US473205
申请日：1995-06-07
申请人： Akinori Nagatomo , Hiroaki Tamatani , Masanobu Ajioka , Akihiro Yamaguchi
发明人： Akinori Nagatomo , Hiroaki Tamatani , Masanobu Ajioka , Akihiro Yamaguchi
IPC分类号： C08G69/10 , C08G69/48 , C08G73/10 , C08F283/04
CPC分类号： C08G69/10 , C08G69/48 , C08G73/1092
摘要： A process for preparing a novel superabsorbent polymer which is readily hydrolyzed and conform to environment by reacting a polysuccinimide with a diamine in an aqueous solution or an organic solvent to partially crosslink the polysuccinimide, and subsequently or concurrently hydrolyzing the remaining imide ring with an alkali while controlling the pH; and the superabsorbent polymer thus obtained.

13. 发明授权

US5817728A Preparation of degradable copolymers 失效
标题翻译：可降解共聚物的制备
公开(公告)号：US5817728A
公开(公告)日：1998-10-06
申请号：US610240
申请日：1996-03-04
申请人： Chojiro Higuchi , Hiroshi Suizu , Masatoshi Takagi , Takeshi Kashima , Yuji Terado , Ikumi Kitada , Masanobu Ajioka , Akihiro Yamaguchi , Taiji Kameoka
发明人： Chojiro Higuchi , Hiroshi Suizu , Masatoshi Takagi , Takeshi Kashima , Yuji Terado , Ikumi Kitada , Masanobu Ajioka , Akihiro Yamaguchi , Taiji Kameoka
IPC分类号： C08B3/16 , C08B13/00 , C08B31/02 , C08G63/664 , C08G63/672 , C08G63/81 , C08B3/00
CPC分类号： C08G63/81 , C08B13/00 , C08B3/16 , C08B31/02 , C08G63/664 , C08G63/672
摘要： A preparation process of a degradable copolymer comprising carrying out dehydration polycondensation of polysaccharide (A) with one or more compounds (B) selected from the group consisting of: (b1) hydroxycarboxylic acid, (b2) polyhydroxycarboxylic acid, (b3) aliphatic polyhydric alcohol and aliphatic polybasic acid, and (b4) aliphatic polyester derived from aliphatic polyhydric alcohol and aliphatic polybasic acid. A copolymer having a high molecular weight, excellent toughness, transparency and heat resistance, and additionally having a high melt tension can be obtained with a reaction time less than a half of the conventional process. The copolymer obtained by the invention is a material suited for injection molding, extrusion, calendaring, blow forming, balloon forming, vacuum forming and foaming. Particularly, the copolymer obtained by the invention has a high melt tension and thus the molten copolymer is difficult to sag and flow and can be processed with ease into foams and blow bottles.
摘要翻译：一种可降解共聚物的制备方法，包括进行多糖（A）与一种或多种选自以下的化合物（B）的脱水缩聚：（b1）羟基羧酸，（b2）聚羟基羧酸，（b3）脂肪族多元醇和脂族多元酸，和（b4）衍生自脂肪族多元醇和脂肪族多元酸的脂肪族聚酯。可以获得具有低于常规方法的一半的反应时间的具有高分子量，优异的韧性，透明性和耐热性以及额外具有高熔体张力的共聚物。通过本发明获得的共聚物是适于注射成型，挤出，压延，吹塑成型，球形成型，真空成型和发泡的材料。特别地，本发明获得的共聚物具有高熔体张力，因此熔融共聚物难以下垂和流动，并且可以容易地加工成泡沫和吹塑瓶。

14. 发明授权

US5637631A Preparation process of degradable polymer 失效
标题翻译：可降解聚合物的制备方法
公开(公告)号：US5637631A
公开(公告)日：1997-06-10
申请号：US553984
申请日：1995-11-06
申请人： Ikumi Kitada , Chojiro Higuchi , Masanobu Ajioka , Akihiro Yamaguchi
发明人： Ikumi Kitada , Chojiro Higuchi , Masanobu Ajioka , Akihiro Yamaguchi
IPC分类号： C08G63/08 , C08G63/60 , C08G63/81 , C08K5/00 , C08F20/00
CPC分类号： C08G63/08 , C08G63/60 , C08G63/81
摘要： A process for preparing a degradable copolymer of aliphatic polyester comprising the steps of reacting two or more kinds of aliphatic polyester homopolymer in the presence of a catalyst in a reaction mixture containing an organic solvent, and a degradable copolymer of aliphatic polyester obtained by said preparation process. The copolymers exhibits high transparency in addition to excellent strength and elongation, can be processed into various molded articles and formed items such as films and filaments, and can provide heat resistance by heat treatment of said molded articles and formed items. The copolymer can be suitably utilized for processed articles such as a film, breathable film, sheet, textile, monofilament, multifilament, yarn, non-woven fabric, flat yarn, staple, crimped fiber, ribbed tape, split yarn, conjugate fiber, laminate, blow-bottle, sheet, stretched sheet, foam and net.
摘要翻译：一种制备脂肪族聚酯的可降解共聚物的方法，包括以下步骤：在催化剂存在下，在含有机溶剂的反应混合物和通过所述制备方法得到的脂族聚酯的可降解共聚物之间使两种或更多种脂肪族聚酯均聚物反应。除了优异的强度和伸长率之外，共聚物显示出高透明度，可以加工成各种成型体和成膜物品如膜和长丝，并且可以通过所述模制品和成形品的热处理提供耐热性。该共聚物可以适用于薄膜，透气薄膜，薄片，纺织品，单丝，复丝，纱线，无纺布，扁丝，短纤维，卷曲纤维，带肋带，分裂纱，复合纤维，叠层吹瓶，片，拉伸片，泡沫和网。

15. 发明授权

US5571889A Polymer containing monomer units of chemically modified polyaspartic acids or their salts and process for preparing the same 失效
标题翻译：含有化学改性的聚天冬氨酸或其盐的单体单元的聚合物及其制备方法
公开(公告)号：US5571889A
公开(公告)日：1996-11-05
申请号：US450117
申请日：1995-05-25
申请人： Toshio Katoh , Akinori Nagatomo , Hiroaki Tamatani , Masanobu Ajioka , Akihiro Yamaguchi
发明人： Toshio Katoh , Akinori Nagatomo , Hiroaki Tamatani , Masanobu Ajioka , Akihiro Yamaguchi
IPC分类号： A61K8/88 , A61Q5/00 , A61Q5/06 , A61Q19/00 , C08G73/10 , C08G69/10
CPC分类号： C08G73/1092 , A61K8/88 , A61Q19/00 , A61Q5/00 , A61Q5/06
摘要： A polymer containing the following monomer unit (I) and/or (II): ##STR1## and a process for preparing the polymer which comprises, in ring opening reaction of the polysuccinimide, opening the ring of polysuccinimide by using an amino acid ester having an extremely high reactivity in place of an .alpha.-amino acid having an extremely low reactivity. The polymer is characterized by having no irritation to organisms (e.g., eyes and skin), and for example, the polymer is useful in the industrial fields of fields of medical supplies, health, beauty and sanitary aids, quasi-pharmaceuticals, and the like.
摘要翻译：包含以下单体单元（I）和/或（II）的聚合物：制备聚合物的方法，其包括在聚琥珀酰亚胺的开环反应中打开环的聚琥珀酰亚胺通过使用具有极高反应性的氨基酸代替具有极低反应性的α-氨基酸。聚合物的特征在于对生物体（例如眼睛和皮肤）没有刺激性，并且例如该聚合物可用于医疗用品，健康，美容和卫生助剂，准药品等领域的工业领域。

16. 发明授权

US5302743A Preparation of N-protected .alpha.-L-aspartyl-L-phenylalanine methyl ester 失效
标题翻译： N-保护的α-L-天冬氨酰基-L-苯丙氨酸甲酯的制备
公开(公告)号：US5302743A
公开(公告)日：1994-04-12
申请号：US823538
申请日：1992-01-21
申请人： Toshio Katoh , Chojiro Higuchi , Takeshi Oura , Masanobu Ajioka , Akihiro Yamaguchi
发明人： Toshio Katoh , Chojiro Higuchi , Takeshi Oura , Masanobu Ajioka , Akihiro Yamaguchi
IPC分类号： C07K5/075 , C07C229/00
CPC分类号： C07K5/0613 , Y02P20/55
摘要： Disclosed is an improved process for the preparation of an N-protected .alpha.-L-aspartyl-L-phenylalanine methyl ester from an N-protected L-aspartic anhydride and L-phenylalanine methyl ester, the improvement which comprises employing the L-phenylalanine methyl ester in the form of a mineral acid salt thereof and conducting the reaction either (a) in an organic solvent and in the presence of a salt of an organic carboxylic acid, or (b) in an organic solvent comprising an organic carboxylic acid and in the presence of at least one member of the group consisting of an alkali metal or an alkaline earth metal inorganic base, an ammonium alkali metal or alkaline earth metal salt of an organic carboxylic acid and ammonium carbonate. The starting N-protected aspartic anhydride, e.g., N-benzyloxycarbonyl-L-aspartic anhydride, can be produced by the reaction of N-protected aspartic acid with phosgene. When the N-protecting group sibenzyloxycarbonyl and the solvent is acetic acid, the desired product can be isolated from the reaction mixture in crystalline form in high purity by adding water thereto.
摘要翻译：公开了一种由N-保护的L-天冬氨酸酐和L-苯丙氨酸甲酯制备N-保护的α-L-天冬氨酰-L-苯丙氨酸甲酯的改进方法，其改进包括使用L-苯丙氨酸甲酯酯，其为无机酸盐，并且在有机溶剂中和有机羧酸的盐存在下进行反应，或（b）在包含有机羧酸的有机溶剂中和存在由碱金属或碱土金属无机碱组成的组中的至少一种，有机羧酸的铵碱金属或碱土金属盐和碳酸铵。起始的N-保护的天冬氨酸酐，例如N-苄氧基羰基-L-天冬氨酸酐可以通过N-保护的天冬氨酸与光气的反应来制备。当N-保护基团苄氧基羰基和溶剂为乙酸时，可以通过向其中加入水从所述反应混合物中以高纯度从结晶形式中分离所需产物。

17. 发明授权

US5283357A Separation method of .alpha.-l-aspartyl-l-phenylalanine methyl ester 失效
标题翻译： α1-天冬氨酰基-1-苯丙氨酸甲酯的分离方法
公开(公告)号：US5283357A
公开(公告)日：1994-02-01
申请号：US688709
申请日：1991-04-23
申请人： Toshio Katoh , Chojiro Higuchi , Takeshi Oura , Masanobu Ajioka , Akihiro Yamaguchi
发明人： Toshio Katoh , Chojiro Higuchi , Takeshi Oura , Masanobu Ajioka , Akihiro Yamaguchi
IPC分类号： C07K5/072 , C07K5/075 , C07C227/34 , C07C227/38
CPC分类号： C07K5/0613
摘要： A method for separating .alpha.-L-aspartyl-L-phenylalanine methyl ester (.alpha.-APM) from a solution containing .alpha.-APM and impurities associated with the production thereof which comprises adding a mineral acid or an organic sulfonic acid to the solution in an organic carboxylic acid or in a solvent containing an organic carboxylic acid, and isolating the pure salt of .alpha.-APM which precipitates therefrom.
摘要翻译：从含有α-APM的溶液和与其生产相关的杂质的溶液中分离α-L-天冬氨酰基-L-苯丙氨酸甲酯（α-APM）的方法，其包括在无机酸或有机磺酸中加入无机酸或有机磺酸有机羧酸或含有机羧酸的溶剂中，并分离其中沉淀的α-APM的纯盐。

18. 发明授权

US5428126A Aliphatic polyester and preparation process thereof 失效
标题翻译：脂肪族聚酯及其制备方法
公开(公告)号：US5428126A
公开(公告)日：1995-06-27
申请号：US368879
申请日：1995-01-05
申请人： Takeshi Kashima , Taiji Kameoka , Chojiro Higuchi , Masanobu Ajioka , Akihiro Yamaguchi
发明人： Takeshi Kashima , Taiji Kameoka , Chojiro Higuchi , Masanobu Ajioka , Akihiro Yamaguchi
IPC分类号： C08G63/16 , C08G63/60 , C08G63/81 , C08F6/16
CPC分类号： C08G63/60 , C08G63/16 , C08G63/81
摘要： A preparation process of aliphatic polyester having a weight average molecular weight of 15,000 or more by conducting a direct polycondensation reaction of an aliphatic polyhydric alcohol or a mixed aliphatic polyhydric alcohol and an aliphatic polybasic acid or a mixed aliphatic polybasic acid, or additionally a hydroxycarboxylic acid or a mixed hydroxycarboxylic acid or an oligomer of the hydroxycarboxylic acid in a reaction mixture containing an organic solvent.The aliphatic polyester thus obtained contains an extremely small amount of impurities, has low color and can exhibit satisfactory strength in the form of films, filaments and other shaped articles.
摘要翻译：通过进行脂肪族多元醇或混合脂肪族多元醇与脂肪族多元酸或混合脂肪族多元酸的直接缩聚反应，或另外添加羟基羧酸，进行重均分子量为15000以上的脂肪族聚酯的制备方法或羟基羧酸的混合羟基羧酸或低聚物在含有机溶剂的反应混合物中。由此获得的脂肪族聚酯含有极少量的杂质，颜色低，并且可以以薄膜，长丝和其它成型制品的形式显示令人满意的强度。

19. 发明授权

US4897506A Isolation of alpha-l-aspartyl-l-phenylalanine methyl ester from aqueous medium 失效
标题翻译：从水介质中分离α-1-天冬氨酰-1-苯丙氨酸甲酯
公开(公告)号：US4897506A
公开(公告)日：1990-01-30
申请号：US256838
申请日：1988-10-12
申请人： Ryuichi Mita , Takeshi Oura , Toshio Katoh , Chojiro Higuchi , Akihiro Yamaguchi , Masanobu Ajioka
发明人： Ryuichi Mita , Takeshi Oura , Toshio Katoh , Chojiro Higuchi , Akihiro Yamaguchi , Masanobu Ajioka
IPC分类号： C07K5/072 , C07K5/075
CPC分类号： C07K5/0613
摘要： A method for preparing .alpha.-L-aspartyl-L-phenylalanine methyl ester having improved solubilization by the isolation thereof from an aqueous medium containing at least one additive selected from the group consisting of sodium alginate, sodium salt of carboxymethylcellulose, sodium starch glycolate and sodium polyacrylate.

20. 发明授权

US5679767A Purification process of aliphatic polyester 失效
标题翻译：脂肪族聚酯的净化过程
公开(公告)号：US5679767A
公开(公告)日：1997-10-21
申请号：US564736
申请日：1995-11-29
申请人： Hiroshi Suizu , Masatoshi Takagi , Masanobu Ajioka , Akihiro Yamaguchi
发明人： Hiroshi Suizu , Masatoshi Takagi , Masanobu Ajioka , Akihiro Yamaguchi
IPC分类号： C08G63/90 , C08F6/02 , C08J3/00
CPC分类号： C08G63/90
摘要： The invention is a purification process of an aliphatic polyester prepared in the presence of a catalyst from a hydroxycarboxylic acid or a cyclic ester of a hydroxycarboxylic acid, or a combination of an aliphatic polyhydric alcohol with an aliphatic polybasic acid, or a mixture of these compounds, comprising deactivating the catalyst while maintaining the aliphatic polyester in a molten or dissolved state, or insolubilizing and separating the catalyst and successively removing low molecular compounds; and can provide aliphatic polyester which has a low content of unreacted monomers and low molecular weight compounds and is excellent in heat resistance and weatherability.
摘要翻译：本发明是在由羟基羧酸或羟基羧酸的环状酯或脂族多元醇与脂肪族多元酸的组合的催化剂或这些化合物的混合物存在下制备的脂肪族聚酯的纯化方法包括使所述催化剂失活，同时保持所述脂肪族聚酯处于熔融或溶解状态，或使所述催化剂不溶解和分离并连续除去低分子化合物; 并且可以提供具有低含量的未反应单体和低分子量化合物的脂肪族聚酯，并且耐热性和耐候性优异。

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