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1. 发明授权

US4733010A Method of separating monohydrate of L-cysteine hydrochloride 失效
标题翻译：分离L-半胱氨酸盐酸盐一水合物的方法
公开(公告)号：US4733010A
公开(公告)日：1988-03-22
申请号：US59845
申请日：1987-06-09
申请人： Shyoichiro Miyahara , Toshiaki Kamiguchi , Tadashi Hashimukai , Kazunari Nitta
发明人： Shyoichiro Miyahara , Toshiaki Kamiguchi , Tadashi Hashimukai , Kazunari Nitta
IPC分类号： C07C319/28 , C07C67/00 , C07C313/00 , C07C323/50 , C07C323/58 , C12P13/12 , C07C51/487 , C07B57/00
CPC分类号： C12P13/12
摘要： Hydrochloric acid is added to a solution containing L-cysteine, L-cystine, L-serine and an inorganic salt until it contains at least 15% by weight of hydrochloric acid. The solution is held at a temperature of at least 20.degree. C. so that the L-cystine and the inorganic salt may form a solid, and the solid is removed from the solution. The solution is cooled to a temperature not exceeding 10.degree. C., so that crystallization may take place to form the monohydrate of L-cysteine hydrochloride. The monohydrate is separated from the L-serine in the solution.

2. 发明授权

US4769474A Process for purifying tryptophane 失效
标题翻译：纯化色氨酸的方法
公开(公告)号：US4769474A
公开(公告)日：1988-09-06
申请号：US847194
申请日：1986-04-02
申请人： Shoichiro Miyahara , Toshio Matsumoto , Tooru Miyahara , Kazunari Nitta
发明人： Shoichiro Miyahara , Toshio Matsumoto , Tooru Miyahara , Kazunari Nitta
IPC分类号： C12N9/00 , C07D209/20 , C12P13/22 , C07D209/08
CPC分类号： C07D209/20 , C12P13/227
摘要： A process for purifying tryptophan so as to contain almost no unreacted indole and a process for recovering unreacted indole with a very high percentage are provided, the purification process comprising passing a reaction fluid of tryptophan prepared from indole as raw material by means of an enzyme function, through a porous type, cation exchange resin layer, to cause the ion exchange part of the resin to absorb tryptophan, while to cause the porous part of the resin to adsorb indole, followed by eluting only the tryptophan with an alkali or acid aqueous solution, and the recovery process comprising subjecting tryptophan to repeated treatments of adsorption onto and elution from the ion exchange part of the resin and regeneration followed by eluting indole adsorbed onto the porous part of the resin with a water-containing organic solvent miscible with water and isolating indole from the resulting elute.
摘要翻译：提供了纯化色氨酸以便几乎不含未反应的吲哚的方法和以非常高的百分比回收未反应的吲哚的方法，该纯化方法包括使由吲哚制备的色氨酸的反应液作为原料通过酶功能通过多孔型阳离子交换树脂层，使树脂的离子交换部分吸收色氨酸，同时使树脂的多孔部分吸附吲哚，然后用碱或酸水溶液仅洗脱色氨酸，并且回收方法包括使色氨酸重复处理吸附到树脂的离子交换部分上并从树脂中洗脱并进行再生，随后用与水混合的含水有机溶剂吸附到树脂的多孔部分上的吲哚洗脱并分离吲哚从得到的洗脱液。

3. 发明授权

US4879411A Method for racemization of optically active serine 失效
标题翻译：光学活性丝氨酸外消旋化方法
公开(公告)号：US4879411A
公开(公告)日：1989-11-07
申请号：US219781
申请日：1988-07-18
申请人： Ken-ichi Ishiwata , Takeshi Nakamura , Nobuyoshi Makiguchi , Shoichiro Miyahara , Toshio Matsumoto , Kazunari Nitta
发明人： Ken-ichi Ishiwata , Takeshi Nakamura , Nobuyoshi Makiguchi , Shoichiro Miyahara , Toshio Matsumoto , Kazunari Nitta
IPC分类号： C07B55/00 , C07B31/00 , C07C67/00 , C07C227/00 , C07C227/36 , C07C229/22
CPC分类号： C07C227/36
摘要： Optically active serine can be racemized at a high reaction rate under the relatively mild conditions by treating the optically active serine in an alkaline solution in the presence of pyridoxal phosphate or salicylaldehyde and an alkaline compound.

4. 发明授权

US5179227A Fractionation process of reaction mixture containing methylene bridged polyphenylene polyisocyanate 失效
标题翻译：含有亚甲基联苯聚苯乙烯的反应混合物的分离方法
公开(公告)号：US5179227A
公开(公告)日：1993-01-12
申请号：US779733
申请日：1991-10-23
申请人： Noritoshi Ishida , Zunzi Tashima , Mitsunori Shimamatsu , Kazunari Nitta , Takashi Nagou
发明人： Noritoshi Ishida , Zunzi Tashima , Mitsunori Shimamatsu , Kazunari Nitta , Takashi Nagou
IPC分类号： C07C263/10 , C07C263/20 , C07C265/14 , C08G18/76
CPC分类号： C07C263/10 , C07C263/20
摘要： A fractionation process of a methylene bridged polyphenylene polyisocyanate mixture obtained by phosgenating condensation product of aniline and formaldehyde is disclosed.In order to apply the above mixture to a variety of uses, the process separates the mixture into fractions by giving primary attention to the content of 4,4'-and 2,4'-isomer of diphenylmethane diisocyanate and at the same time reduces the content of impurities having acidity and hydrolyzable chlorine.

5. 发明授权

US4733009A Method for separating glycine and L-serine from a solution containing same 失效
标题翻译：从含有它的溶液中分离甘氨酸和L-丝氨酸的方法
公开(公告)号：US4733009A
公开(公告)日：1988-03-22
申请号：US886160
申请日：1986-07-16
申请人： Shoichiro Miyahara , Toshio Matsumoto , Tooru Miyahara , Akio Sakaguchi , Kazunari Nitta
发明人： Shoichiro Miyahara , Toshio Matsumoto , Tooru Miyahara , Akio Sakaguchi , Kazunari Nitta
IPC分类号： C12P13/04 , C07C67/00 , C07C227/00 , C07C227/40 , C07C229/08 , C07C229/22 , C12P13/06 , C07C99/12
CPC分类号： C12P13/06
摘要： Disclosed is a method for separating lycine and L-serine from a solution containing both of them in the dissolved state and, in particular, a reaction solution obtained from a fermentation or enzymic conversion process for the preparation of L-serine by using glycine as the raw material. This method is based on a chromatographic technique utilizing the differential affinity of L-serine and glycine for a strongly acidic ion exchange resin.
摘要翻译：本发明公开了从溶解状态的两者中分离出来的溶液和L-丝氨酸的方法，特别是通过使用甘氨酸作为制备L-丝氨酸的发酵或酶转化方法得到的反应液原材料。该方法基于利用L-丝氨酸和甘氨酸对强酸性离子交换树脂的差异亲和力的色谱技术。

6. 发明授权

US5364958A Process for the production of methylene-crosslinked polyphenylene polyisocyanate 失效
标题翻译：制备亚甲基交联聚亚苯基多异氰酸酯的方法
公开(公告)号：US5364958A
公开(公告)日：1994-11-15
申请号：US79806
申请日：1993-06-22
申请人： Noritoshi Ishida , Zunzi Tashima , Naoki Sato , Michiya Takasaki , Masaaki Iijima , Kazuyuki Kuroda , Kazunari Nitta
发明人： Noritoshi Ishida , Zunzi Tashima , Naoki Sato , Michiya Takasaki , Masaaki Iijima , Kazuyuki Kuroda , Kazunari Nitta
IPC分类号： C07C263/10 , C08G18/76 , C07C263/04
CPC分类号： C07C263/10 , C07C263/20 , C08G18/7664
摘要： The hue of a methylene-crosslinked polyphenylene polyisocyanate continuously produced by the reaction with phosgene in an inert solvent of a polyamine mixture obtained by condensation of aniline and formaldehyde in the presence of an acid catalyst is improved by first removing any residual phosgene followed by heat treatment in the presence of hydrogen chloride gas.
摘要翻译：通过在酸性催化剂的存在下通过苯胺和甲醛的缩合获得的多胺混合物的惰性溶剂中与光气反应连续产生的亚甲基交联的聚亚苯基多异氰酸酯的色调通过首先除去任何残余的光气，然后进行热处理在氯化氢气体存在下。

7. 发明授权

US4418018A Process for the production of 2,3-dichloropropionitrile 失效
标题翻译： 2,3-二氯丙腈生产方法
公开(公告)号：US4418018A
公开(公告)日：1983-11-29
申请号：US342804
申请日：1982-01-26
申请人： Kazuyuki Kuroda , Riyoiti Ikematsu , Kazunari Nitta
发明人： Kazuyuki Kuroda , Riyoiti Ikematsu , Kazunari Nitta
IPC分类号： C07B61/00 , B01J31/00 , B01J31/02 , C07C67/00 , C07C253/00 , C07C253/14 , C07C255/10 , C07C120/00 , C07C121/16
CPC分类号： C07C255/00
摘要： In a process for the production of 2,3-dichloropropionitrile by the chlorination of acrylonitrile, the improvement which comprises chlorinating acrylonitrile in the presence of pyridine or an alkylpyridine in combination with an alkaline earth metal carbonate.
摘要翻译：在通过氯化丙烯腈生产2,3-二氯丙腈的方法中，其改进包括在吡啶或烷基吡啶与碱土金属碳酸盐的组合下氯化丙烯腈。

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