专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5968365A Preparation of inulin products 失效
标题翻译：菊粉制品的制备
公开(公告)号：US5968365A
公开(公告)日：1999-10-19
申请号：US783085
申请日：1997-01-15
申请人： Kathleen S. Laurenzo , Juan L. Navia , David S. Neiditch
发明人： Kathleen S. Laurenzo , Juan L. Navia , David S. Neiditch
IPC分类号： C08B37/18 , C07B63/00 , C07H1/08 , C07H3/06 , C08B30/04 , C08B37/00 , B01D61/00
CPC分类号： C08B37/0054
摘要： A process is described for clarifying a crude inulin extract by ultrafiltration and separating an aqueous inulin solution containing carbohydrates having a range of degrees of polymerization into fractions having different average degrees of polymerization which comprises subjecting an aqueous inulin solution to ultrafiltration through a membrane having a predetermined pore size whereby inulin fractions having average degrees of polymerization less than a predetermined value pass through said membrane as permeate and inulin fractions having average degrees of polymerization greater than said predetermined value are collected as retentate.
摘要翻译：描述了用于通过超滤来澄清粗制菊粉提取物的方法，并将含有聚合度范围的碳水化合物的菊糖溶液水溶液分离成具有不同平均聚合度的级分，其包括使菊糖水溶液通过具有预定的平均聚合度小于预定值的菊粉馏分通过所述膜作为渗透物，并且平均聚合度大于所述预定值的菊粉馏分作为保留物被收集。

2. 发明授权

US5530106A Recovery of sucralose intermediates 失效
标题翻译：三氯蔗糖中间体的回收
公开(公告)号：US5530106A
公开(公告)日：1996-06-25
申请号：US368466
申请日：1995-01-04
申请人： Juan L. Navia , Robert E. Walkup , David S. Neiditch
发明人： Juan L. Navia , Robert E. Walkup , David S. Neiditch
IPC分类号： C07H13/04 , C07H13/08 , C07H13/00 , C07H13/06
CPC分类号： C07H13/04 , C07H13/08
摘要： There is disclosed a process for recovering sucralose-6-ester from a feed mixture of 6-O-acyl-4,1',6'-trichloro-4,1',6'-trideoxygalactosucrose in a reaction medium comprising a tertiary amide (such as N,N-dimethylformamide), wherein said process comprises removing a major proportion of said tertiary amide by steam distillation. In preferred aspects of the invention, the steam distillation is followed by extraction and then purification by crystallization or crystal aging to recover sucralose-6-ester in good yield.
摘要翻译：公开了在含有叔酰胺的反应介质中从6-O-酰基-4,1'，6'-三氯-4,1'，6'-三脱氧半乳糖蔗糖的进料混合物中回收三氯蔗糖-6-酯的方法（例如N，N-二甲基甲酰胺），其中所述方法包括通过蒸汽蒸馏除去主要比例的所述叔酰胺。在本发明的优选方面，蒸汽蒸馏之后是提取，然后通过结晶或晶体老化纯化以良好的收率回收三氯半乳蔗糖-6-酯。

3. 发明授权

US5498709A Production of sucralose without intermediate isolation of crystalline sucralose-6-ester 失效
标题翻译：生产三氯半乳蔗糖而不中间分离结晶三氯半乳蔗糖-6-酯
公开(公告)号：US5498709A
公开(公告)日：1996-03-12
申请号：US448710
申请日：1995-05-24
申请人： Juan L. Navia , Robert E. Walkup , Nicholas M. Vernon , David S. Neiditch
发明人： Juan L. Navia , Robert E. Walkup , Nicholas M. Vernon , David S. Neiditch
IPC分类号： C07H3/04 , C07H5/02 , C07G17/00 , C07H1/00 , C07H3/00
CPC分类号： C07H5/02
摘要： There is disclosed a process for producing sucralose from sucralose-6-ester whereby the sucralose-6-ester is deacylated directly either prior to or after removal of the tertiary amide reaction vehicle from the neutralized chlorination reaction mixture, to produce an aqueous solution of sucralose plus salts and impurities, from which sucralose is recovered by extraction and is then preferably purified by crystallization.
摘要翻译：公开了一种由三氯蔗糖-6-酯制备三氯半乳蔗糖的方法，由此三氯蔗糖-6-酯在从中和的氯化反应混合物中除去叔胺反应载体之前或之后直接脱酰基，以产生三氯半乳蔗糖的水溶液加上盐和杂质，通过萃取从其中回收三氯蔗糖，然后优选通过结晶纯化。

4. 发明授权

US5023329A Sucrose-6-ester production process 失效
标题翻译：蔗糖-6-酯生产工艺
公开(公告)号：US5023329A
公开(公告)日：1991-06-11
申请号：US512692
申请日：1990-04-23
申请人： David S. Neiditch , Nicholas M. Vernon , Robert E. Wingard, Jr.
发明人： David S. Neiditch , Nicholas M. Vernon , Robert E. Wingard, Jr.
IPC分类号： C07H13/02 , C07H13/04 , C07H13/08 , C07H23/00
CPC分类号： C07H13/04 , C07H13/08 , C07H23/00
摘要： Process which comprises reacting sucrose with a di-(hydrocarbyl)tin oxide in an inert organic reaction vehicle with removal of water for a period of time and at a temperature sufficient to produce a 1,3-di-(6-O-sucrose)-1,1,3,3-tetra(hydrocarbyl)distannoxane.

5. 发明授权

US4485210A Process for the continuous production of star-block copolymers of a monovinyl aromatic monomer and a conjugated diene 失效
标题翻译：用于连续生产单乙烯基芳族单体和共轭二烯的星形嵌段共聚物的方法
公开(公告)号：US4485210A
公开(公告)日：1984-11-27
申请号：US482385
申请日：1983-04-06
申请人： David S. Neiditch , Gerald A. Bullano , Robert J. DiLullo , David E. Ofstein
发明人： David S. Neiditch , Gerald A. Bullano , Robert J. DiLullo , David E. Ofstein
IPC分类号： B01J19/18 , C08F297/04 , C08G81/02
CPC分类号： C08G81/022 , B01J19/18 , B01J19/1862 , C08F297/044 , B01J2219/00103 , B01J2219/00159 , B01J2219/00162 , B01J2219/00164 , B01J2219/185
摘要： A continuous process for producing star-block copolymer of a monovinyl aromatic monomer and a conjugated diene by continuously forming a vinyl aromatic polymer having a low weight average molecular weight to number average molecular weight ratio in a first reactor by anionic initiation in a solution of inert solvent; discharging a solution of polymer from the first reactor and passing the solution to a second sealed, cylindrical, pressurized, vertical reactor having a bottom zone, top zone and a plurality of intermediate zones separated by separation plates, each having a central aperture and mixing shaft passing therethrough, with the mixture passing to successive zones through an annular space formed between the shaft and each separation plate. The continuously produced solution of diblock copolymer is removed from the top zone of the second reactor and mixed with a polyfunctional coupling agent in a third reactor to produce a solution of star-block copolymer, with that solution discharged from the third reactor and contacted with a terminating agent, and the resultant star-block copolymer separated from the solvent.
摘要翻译：通过连续形成在惰性溶液中通过阴离子引发在第一反应器中具有低重均分子量与数均分子量比的乙烯基芳族聚合物，生产单乙烯基芳族单体和共轭二烯的星形嵌段共聚物的连续方法溶剂; 从第一反应器排出聚合物溶液并将溶液通过第二密封的，圆柱形的，加压的立式反应器，该反应器具有由分隔板隔开的底部区域，顶部区域和多个中间区域，每个中间区域具有中心孔和混合轴通过其中混合物通过形成在轴和每个分离板之间的环形空间通过连续的区域。将连续生产的二嵌段共聚物溶液从第二反应器的顶部区域除去，并与第三反应器中的多官能偶联剂混合以产生星形嵌段共聚物溶液，该溶液从第三反应器排出并与终止剂和从溶剂中分离的所得星形嵌段共聚物。

6. 发明授权

US4442273A Process and apparatus for continuous polymerization of a monovinyl aromatic monomer 失效
标题翻译：用于连续聚合单乙烯基芳族单体的方法和设备
公开(公告)号：US4442273A
公开(公告)日：1984-04-10
申请号：US482391
申请日：1983-04-06
申请人： David S. Neiditch , Gerald A. Bullano , Robert J. DiLullo , David E. Ofstein
发明人： David S. Neiditch , Gerald A. Bullano , Robert J. DiLullo , David E. Ofstein
IPC分类号： B01J19/00 , B01J19/18 , C08F2/06
CPC分类号： B01J19/006 , B01J19/1862 , B01J2219/00094 , B01J2219/00159 , B01J2219/00162 , B01J2219/00777 , B01J2219/185
摘要： A process and apparatus for the continuous polymerization of monovinyl aromatic monomers, such as styrene, to produce a substantially monodisperse polymer, wherein a solution of monomer in an inert solvent and a hydrocarbyllithium initiator are fed to the bottom zone of a sealed, cylindrical, pressurized, vertical reactor having a plurality of zones, with separation plates separating the reactor into a bottom, a plurality of intermediate, and top zones, the separation plates each having a central aperture, and a mixing means for each zone has a shaft extending through the apertures to provide an annular space for flow of fluid through the zones, the annular space between each separation plate and the shaft of the mixing means being of a size to provide a pressure differential between adjacent zones of less than about one pound per square inch, a substantially monodisperse polymer in solution discharged from the top zone of the reactor.
摘要翻译：用于连续聚合单乙烯基芳族单体如苯乙烯的方法和装置，以产生基本上单分散的聚合物，其中将单体在惰性溶剂和烃基锂引发剂中的溶液进料到密封的圆柱形加压的底部区域具有多个区域的立式反应器，其中分离板将反应器分成底部，多个中间和顶部区域，每个分隔板具有中心孔，并且每个区域的混合装置具有延伸通过孔以提供用于流过所述区域的流体的环形空间，每个分离板和混合装置的轴之间的环形空间具有提供小于约1磅/平方英寸的相邻区域之间的压力差的尺寸，从反应器的顶部区域排出的溶液中的基本上单分散的聚合物。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式