利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

39 条记录 (耗时 0.024 秒)

    Hyperbranched polymers
    1.
    发明授权
    Hyperbranched polymers 失效
    超支化聚合物

    公开(公告)号：US07544746B2

    公开(公告)日：2009-06-09

    申请号：US10516055

    申请日：2003-05-30

    申请人： Niels Dan Anders Södergard ,  Erik Mikael Stolt

    发明人： Niels Dan Anders Södergard ,  Erik Mikael Stolt

    IPC分类号： C08L77/06

    CPC分类号： C08G83/005 ,  C08G63/08

    摘要： A process for preparing a hyperbranched polymer having a weight-average molar mass of at least 30,000, includes coupling a first prepolymer having at least three functional end groups with a second prepolymer having at least two functional end groups by a dehydration condensation reaction between the end groups in the prepolymers. The number of arms and/or molar mass of the functionalized prepolymers can accurately be adjusted, thus affecting the properties of the resulting hyperbranched polymer in a desired way. The polymer can be equipped e.g. with hydrophobic and hydrophilic parts. Also, the number of functional end groups, that optionally can be used for further chemical reactions, in the hyperbranched polymer can easily be adjusted to a desired level. The hyperbranched high molar mass polymer can be prepared in high yields without the use of organic solvents or linking compounds, which is advantageous from an environmental as well as an economical point of view.

    摘要翻译： 一种制备重均摩尔质量至少为30,000的超支化聚合物的方法包括将具有至少三个官能端基的第一预聚物与具有至少两个官能端基的第二预聚物通过末端的脱水缩合反应 预聚物中的基团。 可以精确地调节官能化预聚物的臂数和/或摩尔质量，从而以期望的方式影响所得超支化聚合物的性质。 聚合物可以配备例如 具有疏水和亲水部分。 此外，可以将超支化聚合物中可任选地用于进一步化学反应的官能端基的数目容易地调整到所需的水平。 超支化的高摩尔质量聚合物可以以高产率制备而不使用有机溶剂或连接化合物，这从环境以及经济角度来看是有利的。

    Chlorination of sugars
    3.
    发明授权
    Chlorination of sugars 失效
    糖的氯化

    公开(公告)号：US5136031A

    公开(公告)日：1992-08-04

    申请号：US474314

    申请日：1990-07-09

    申请人： Riaz A. Khan ,  George H. Sankey ,  Philip J. Simpson ,  Nicholas M. Vernon

    发明人： Riaz A. Khan ,  George H. Sankey ,  Philip J. Simpson ,  Nicholas M. Vernon

    IPC分类号： C07H5/02 ,  C07H13/04 ,  C07H13/08

    CPC分类号： C07H5/02 ,  C07H13/04 ,  C07H13/08

    摘要： A process for the chlorination of sucrose or a derivative thereof, comprises reaction of the sucrose or derivative thereof with thionyl chloride and a nitrogen base at a ratio of about 1 molar equivalent (ME) of thionyl chloride and about 1 ME of base for every ME of free hydroxyl, in a non-reactive moderately polar solvent. The process is particularly suitable for the preparation of sucralose.

    摘要翻译： 蔗糖或其衍生物的氯化方法包括将蔗糖或其衍生物与亚硫酰氯和氮碱按每摩尔约1摩尔当量（ME）亚硫酰氯和约1ME碱的比例反应 的游离羟基，在非反应性中等极性溶剂中。 该方法特别适用于制备三氯蔗糖。

    Sucrose alkyl 4,6-orthoacylates
    4.
    发明授权
    Sucrose alkyl 4,6-orthoacylates 失效
    蔗糖烷基4,6-正酰基

    公开(公告)号：US4889928A

    公开(公告)日：1989-12-26

    申请号：US322695

    申请日：1989-03-13

    申请人： Philip J. Simpson

    发明人： Philip J. Simpson

    IPC分类号： C07H1/00 ,  C07H5/02 ,  C07H9/04 ,  C07H13/04 ,  C07H13/06 ,  C07H13/08

    CPC分类号： C07H13/04 ,  C07H13/08

    摘要： Sucrose 6-acylates, key intermediates in the preparation of sucralose, can be prepared by subjecting a sucrose alkyl 4,6-orthoacylate to mild aqueous acidic hydrolysis to provide a mixture of sucrose 4- and 6-acylates and then treating the mixture with a base to convert the 4- acylate to the 6-acylate.The novel sucrose alkyl 4,6-orthoacylates are prepared by reacting sucrose in solution or suspension in an inert organic solvent with a trialkyl orthoacrylate in the presence of an acid catalyst.

    摘要翻译： 蔗糖6-酰化物是制备三氯蔗糖的关键中间体，可以通过将4,6-正丙酸蔗糖烷基酯进行温和的酸性水解酸化来提供蔗糖4-和6-酰化物的混合物，然后用 将4-酰化物转化为6-酰化物。 通过蔗糖在惰性有机溶剂中的溶液或悬浮液与正丙酰三烷基酯在酸催化剂存在下反应来制备新的蔗糖烷基4,6-正己酸酯。

    4'-Halo-substituted sucrose derivatives
    6.
    发明授权
    4'-Halo-substituted sucrose derivatives 失效
    4'-卤素取代的蔗糖衍生物

    公开(公告)号：US4405654A

    公开(公告)日：1983-09-20

    申请号：US371995

    申请日：1982-04-26

    申请人： Cheang K. Lee

    发明人： Cheang K. Lee

    IPC分类号： A23L27/30 ,  C07H5/02 ,  A23G3/30 ,  A23L1/236 ,  A61K7/16

    CPC分类号： C07H5/02 ,  A23L27/37

    摘要： Compounds of the general formula (I) ##STR1## (wherein X represents a halogen atom; R.sup.1 and R.sup.2 respectively represent a combination selected from the group consisting of: a hydroxy group and a hydrogen atom; a halogen atom and a hydrogen atom; and a hydrogen atom and a halogen atom; andR.sup.3 and R.sup.4, which may be the same or different, each represent a substituent selected from the group consisting of a halogen atom and a hydroxy group;at least one of R.sup.1, R.sup.2 and R.sup.3 representing a halogen atom) are potent sweeteners obtainable by opening a corresponding 3',4'-lyxoepoxide with a source of halide ions.

    摘要翻译： 通式（I）的化合物（I）（其中X表示卤素原子; R 1和R 2分别表示选自：羟基和氢原子的组合;卤素原子和氢原子 原子;和氢原子和卤素原子; R 3和R 4可以相同或不同，分别表示选自卤素原子和羟基的取代基; R 1，R 2和 R3表示卤素原子）是通过用卤素离子源打开相应的3'，4'-溶血氧化物可获得的有效的甜味剂。

    Method for the synthesis of sucrose-6-esters
    7.
    发明授权
    Method for the synthesis of sucrose-6-esters 有权
    蔗糖-6-酯的合成方法

    公开(公告)号：US06939962B2

    公开(公告)日：2005-09-06

    申请号：US10343378

    申请日：2001-07-19

    申请人： Jason D. Clark ,  Richard R. LeMay, Jr.

    发明人： Jason D. Clark ,  Richard R. LeMay, Jr.

    IPC分类号： B01J31/12 ,  C07B61/00 ,  C07H13/02 ,  C07H13/04 ,  C07H13/06 ,  C07H1/00 ,  C07H15/04

    CPC分类号： C07H13/04 ,  C07H13/06

    摘要： There is described a process for the synthesis of a sucrose-6-ester comprising: (a) reacting a mixture comprising sucrose and a polar aprotic solvent with an organotin-based acylation promoter, while adding a solvent capable of removing water by co-distillation, and removing water by co-distillation, to afford a first reaction mixture which is substantially free from water, followed by (b) adding a carboxylic anhydride to said first reaction mixture to afford a second reaction mixture, and maintaining said second reaction mixture at a temperature and for a period of time sufficient to produce a sucrose-6-ester, characterised in that step (a) is performed at a temperature of from 85 to 125° C. and at a pressure of from 20 to 80 kPa. In the most preferred embodiment, the polar aprotic solvent is DMF, the solvent capable of removing water by co-distillation is cyclohexane, the organotion-based acylation promoter is a 1,3-diacyloxy-1,1,3,3-tetrabutyldistannoxane, and step (a) is performed at approximately 97° C., and approximately 50 kpa, until the weight ratio of tin to water in the first reaction mixture is greater than about 26, when the tin content is measured by X-Ray Fluoresence Analyzer, and the water content is measured by the Karl-Fischer method.

    摘要翻译： 描述了合成蔗糖-6-酯的方法，其包括：（a）使包含蔗糖和极性非质子溶剂的混合物与有机锡基酰化促进剂反应，同时加入能够通过共蒸馏除去水的溶剂 ，并通过共蒸馏除去水，得到基本上不含水的第一反应混合物，然后（b）向所述第一反应混合物中加入羧酸酐以提供第二反应混合物，并将所述第二反应混合物保持在 温度和足以产生蔗糖-6-酯的一段时间，其特征在于步骤（a）在85至125℃的温度和20至80kPa的压力下进行。 在最优选的实施方案中，极性非质子溶剂是DMF，通过共蒸馏除去水的溶剂是环己烷，基于有机物的酰化促进剂是1,3-二酰氧基-1,1,3,3-四丁基二锡氧烷， 并且步骤（a）在大约97℃和大约50kpa进行，直到当第一反应混合物中锡与水的重量比大于约26时，当锡含量通过X射线荧光分析仪 ，并用Karl-Fischer法测量含水量。

    Solid sucralose
    8.
    发明授权
    Solid sucralose 失效
    固体三氯蔗糖

    公开(公告)号：US5932720A

    公开(公告)日：1999-08-03

    申请号：US11845

    申请日：1998-02-18

    申请人： George Henry Sankey

    发明人： George Henry Sankey

    IPC分类号： C07H1/06 ,  A23L27/30 ,  C07H3/04 ,  C07H5/02 ,  C07H1/00

    CPC分类号： C07H5/02

    摘要： The flowability of crystalline sucralose can be increased by treating the crystalline material in a fluidised bed at ambient temperature with additions of water, followed by a fluidised drying phase. Fluidisation by means of an upward current of air at 25-35.degree. C. and added water at 20-50% by weight, e.g., 25-40%, is preferred.

    摘要翻译： PCT No.PCT / GB96 / 01729 Sec。 371日期1998年2月18日 102（e）1998年2月18日PCT PCT 1996年7月18日PCT公布。 公开号WO97 / 08181 日期1997年3月6日结晶三氯半乳蔗糖的流动性可以通过在环境温度下用加水处理流化床中的结晶物质，随后进行流化干燥阶段来提高。 通过在25-35℃的空气向上流动并加入20-50重量％（例如25-40％）的水进行流化。