Process for oxidizing primary alcohols
    2.
    发明申请
    Process for oxidizing primary alcohols 失效
    氧化伯醇的方法

    公开(公告)号:US20020072600A1

    公开(公告)日:2002-06-13

    申请号:US10013654

    申请日:2001-12-13

    摘要: Primary hydroxyl groups in a substrate having both primary and secondary hydroxyl groups can be selectively oxidized to carbaldehyde and/or carboxyl groups by contacting the substrate with a cyclic nitroxyl compound in the presence of a peroxosulfate as a co-oxidant and by carrying out the reaction at a temperature below 30null C. and at a pH below 9. The process is halogen-free and metal-free and is especially suitable for oxidizing polysaccharides.

    摘要翻译: 具有伯羟基和仲羟基的底物中的伯羟基可以通过在作为辅助氧化剂的过氧硫酸盐存在下使基底与环状硝酰基化合物接触并通过进行反应而选择性地氧化成甲醛和/或羧基 温度低于30℃,pH低于9.该方法是无卤素和无金属的,特别适用于氧化多糖。

    Finishing agent
    4.
    发明授权
    Finishing agent 失效
    整理剂

    公开(公告)号:US5994532A

    公开(公告)日:1999-11-30

    申请号:US793348

    申请日:1997-02-24

    申请人: Olle Wikstrom

    发明人: Olle Wikstrom

    摘要: The use of amylopectin-type starch obtained from potato that has been subjected to a genetical engineering modification to suppress the formation of amylose-type starch, as a finishing agent in papermaking is described.

    摘要翻译: PCT No.PCT / SE96 / 00873 Sec。 371日期1997年2月24日 102(e)1997年2月24日PCT PCT 1996年7月1日PCT公布。 出版物WO97 / 04167 日期1997年2月6日描述了通过进行基因工程改造的马铃薯获得的支链淀粉型淀粉,以抑制直链淀粉型淀粉的形成,作为造纸中的整理剂。

    Oxidation of starch
    6.
    发明授权
    Oxidation of starch 有权
    淀粉氧化

    公开(公告)号:US06822091B1

    公开(公告)日:2004-11-23

    申请号:US09763380

    申请日:2001-03-29

    IPC分类号: C08B3118

    CPC分类号: C08B31/18 C08B35/08

    摘要: The invention relates a process of oxidizing starch wherein a root or tuber starch comprising at least 95 wt. % based on dry substance of the starch amylopectin, or a derivative therof, is treated with hydrogen peroxide in the presence of a catalyst, which catalyst comprises divalent copper ions. The present invention further relates to an oxidizable starch obtainable by a process comprising treating a starch with hydrogen peroxide in the presence of a catalyst, which catalyst comprises divalent copper ions.

    摘要翻译: 本发明涉及氧化淀粉的方法,其中根或块茎淀粉包含至少95wt。 基于淀粉支链淀粉的干物质或衍生物的%在催化剂存在下用过氧化氢处理,该催化剂包含二价铜离子。 本发明还涉及可通过包括在催化剂存在下用过氧化氢处理淀粉的方法获得的可氧化淀粉,所述催化剂包含二价铜离子。

    Method For the Controlled Oxidation of Polysaccharides
    8.
    发明申请
    Method For the Controlled Oxidation of Polysaccharides 有权
    多糖的控制氧化方法

    公开(公告)号:US20080194805A1

    公开(公告)日:2008-08-14

    申请号:US11658852

    申请日:2005-07-29

    摘要: The invention relates to a method for the controlled oxidation of oligo- and/or polysaccharides containing free —CH2OH primary hydroxyl groups, using an oxidising agent. The invention is characterised in that the oxidation reaction is performed in a densified fluid which is inert in relation to the oxidising agents employed. The invention is suitable for use, for example, in the food, paint, paper, textile, agricultural and pharmaceutical industries, in the medical, biomedical or paramedical fields, in the surgical field, in the cosmetic industry and as agents for the complexing or sequestering of metal ions, heavy metals and radioactive elements in the nuclear industry.

    摘要翻译: 本发明涉及使用氧化剂来控制含有游离-CH 2 OH羟基的寡糖和/或多糖的氧化方法。 本发明的特征在于,氧化反应在致密流体中进行,该致密流体相对于所用的氧化剂是惰性的。 本发明适用于例如食品,油漆,纸张,纺织品,农业和制药工业,医疗,生物医学或辅助医疗领域,在外科领域,化妆品工业中,以及用于络合或 核工业中金属离子,重金属和放射性元素的螯合。

    Method For The Production Of Hyperbranched Polysaccharide Fractions
    9.
    发明申请
    Method For The Production Of Hyperbranched Polysaccharide Fractions 审中-公开
    超支化多糖成分的制备方法

    公开(公告)号:US20070202577A1

    公开(公告)日:2007-08-30

    申请号:US10590676

    申请日:2005-02-26

    申请人: Klaus Sommermeyer

    发明人: Klaus Sommermeyer

    IPC分类号: C12P19/04 C08B31/00

    摘要: The invention relates to a method for producing hyperbranched amylopectin having a mean molecular weight ranging between 2,000 and 29,000 Dalton and an average degree of branching of more than 10 percent and less than 20 percent, said degree of branching being expressed in mole percent of the anhydroglucose units carrying branching points. According to the inventive method, the molecular weight of plant amylopectins or starch rich in amylopectin is reduced to molecular weights not exceeding 60,000 Dalton by means of a-amylase or acid hydrolysis in a first hydrolysis step, and the molecular weight of the reduced product obtained in the first hydrolysis step is further reduced by means of β-amylase reduction in a second hydrolysis step. The invention further relates to the production of coupling products of the hyperbranched amylopectin with a pharmaceutical agent.

    摘要翻译: 本发明涉及一种生产超支链支链淀粉的方法,其平均分子量介于2,000至29,000道尔顿之间,平均支化度大于10%且小于20%,所述支化度以脱葡萄糖的摩尔百分数表示 单位承载分支点。 根据本发明的方法,在第一水解步骤中,通过α-淀粉酶或酸水解将植物支链淀粉或富含支链淀粉的淀粉的分子量降低到不超过6,000道尔顿的分子量,并且得到的还原产物的分子量 在第二水解步骤中通过β-淀粉酶还原进一步降低第一水解步骤。 本发明还涉及超支化支链淀粉与药剂的偶联产物的生产。

    Process for oxidizing primary alcohols
    10.
    发明授权
    Process for oxidizing primary alcohols 失效
    氧化伯醇的方法

    公开(公告)号:US06936710B2

    公开(公告)日:2005-08-30

    申请号:US10013654

    申请日:2001-12-13

    摘要: Primary hydroxyl groups in a substrate having both primary and secondary hydroxyl groups can be selectively oxidized to carbaldehyde and/or carboxyl groups by contacting the substrate with a cyclic nitroxyl compound in the presence of a peroxosulfate as a co-oxidant and by carrying out the reaction at a temperature below 30° C. and at a pH below 9. The process is halogen-free and metal-free and is especially suitable for oxidizing polysaccharides.

    摘要翻译: 具有伯羟基和仲羟基的底物中的伯羟基可以通过在作为辅助氧化剂的过氧硫酸盐存在下使基底与环状硝酰基化合物接触并通过进行反应而选择性地氧化成甲醛和/或羧基 温度低于30℃,pH低于9.该方法是无卤素和无金属的,特别适用于氧化多糖。