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    • 4. 发明授权
    • Preparation of alkyl glycosides
    • 烷基糖苷的制备
    • US5554742A
    • 1996-09-10
    • US295795
    • 1994-09-15
    • Gerhard WolfAlfred OftringGeorg SchuhHelmut WolfRudolf AltHans-Heinrich BechtolsheimerDieter Hertel
    • Gerhard WolfAlfred OftringGeorg SchuhHelmut WolfRudolf AltHans-Heinrich BechtolsheimerDieter Hertel
    • C07H15/04C07H1/00
    • C07H15/04
    • The preparation of alkyl glycosides by reaction of aqueous glycoses having a water content of 10-80% by weight with aliphatic primary alcohols having from 5 to 30 C atoms is described, in which(a) the alcohols and the glycoses are employed in a molar ratio of 2:1 to 10:1,(b) 0.1-5% by weight, based on the amount of the glycoses employed, of the acidic form of an anionic surfactant is used as the acidic catalyst having emulsifying properties,(c) 1-30% by weight, based on the amount of the glycoses employed, of alkyl glycosides is used as a further emulsifier,(d) the aqueous glycose is preheated to 50.degree.-90.degree. C. and the preheated aqueous solution of the glycose is metered with effective mixing into the reaction mixture of alcohol, acidic catalyst and emulsifier in such a manner that an emulsion is formed,(e) the reaction is carried out at from 100.degree. to 150.degree. C. and from 10 to 100 mbar, the water introduced into the reaction mixture and the water formed by the reaction being continuously removed by distillation,(f) after the reaction has ended, the acidic catalyst is neutralized by addition of a base such that the resulting mixture has a pH of 8-10, then(g) the excess alcohol is removed by distillation at from 0.01 to 10 mbar down to a residual content of less than 5% by weight, based on the amount of alkyl glycoside present, and(h) the reaction mixture is bleached at pH 8-10 after conversion into an aqueous paste having a content of from 30 to 70% by weight of alkyl glycoside using a compound eliminating active oxygen.
    • PCT No.PCT / EP93 / 00791 Sec。 371日期1994年9月15日 102(e)1994年9月15日PCT 1993年4月1日PCT PCT。 出版物WO93 / 21196 日期:1993年10月28日描述了通过水含量为10-80%(重量)的水性糖苷与具有5至30个碳原子的脂族伯醇反应制备烷基糖苷,其中(a)醇和糖 以摩尔比为2:1至10:1使用,(b)0.1-95重量%,基于所用糖苷的量,酸性形式的阴离子表面活性剂用作具有乳化性的酸性催化剂 性质,(c)基于所用糖糖的量,将1-30重量%的烷基糖苷用作另外的乳化剂,(d)将糖水溶液预热至50-90℃,将预热的 以醇,酸性催化剂和乳化剂的反应混合物中有效混合糖的水溶液,使得形成乳液,(e)反应在100-150℃和从 10至100毫巴,引入反应混合物中的水和由t形成的水 通过蒸馏连续除去反应,(f)反应结束后,通过加入碱中和酸性催化剂,使得所得混合物的pH值为8-10,然后(g)过量的醇通过 以0.01至10毫巴蒸馏至基于存在的烷基糖苷的量小于5重量%的残留含量,和(h)将反应混合物在转化成具有 使用除去活性氧的化合物,含有30〜70重量%的烷基糖苷。
    • 10. 发明申请
    • Tanning agent and curing agent based on dialdehydes
    • 鞣剂和基于二醛的固化剂
    • US20050125906A1
    • 2005-06-16
    • US10511279
    • 2003-05-02
    • Stephan HüfferGunther PabstTilman TaegerStefan SchroederGerhard Wolf
    • Stephan HüfferGunther PabstTilman TaegerStefan SchroederGerhard Wolf
    • C07C45/72C14C3/16C14C3/00
    • C07C45/72C14C3/16
    • The invention relates to a tanning agent that is produced by reacting at least one aldehyde of general formula (I) with at least another identical or different aldehyde of formula (I), wherein the variables are defined as follows: Z is a single chemical bond, an optionally substituted C1-C12-alkyl, an optionally substituted C5-C12-cycloalkyl or an optionally substituted C6-C14-aryl, wherein the reaction is carried out in the presence of an acid catalyst and optionally in the presence of at least another carbonyl compound of formula (II), R1 to R4 represent, independent of one another, hydrogen, optionally substituted C1-C12-allyl, optionally substituted C3-C12-cycloalkyl, optionally substituted C7-C13-aralkyl or optionally substituted C6-C14-aryl, provided that at least another aldehyde of formula (I) in which the radical of Z contains α hydrogen atoms or at least another carbonyl compound of formula (I) is present when Z is a single chemical bond or a radical without any hydrogen atoms. The invention also relates to a method for the production of said tanning agent, to the utilization thereof as curing agent, particularly for pretannage, tannage or retannage of animal skins using the inventive tanning agents. The invention further relates to a powder active agent containing one or more of said inventive tanning agents, to a method for the production of said powder active agents and to the use thereof as curing agent and to leather produced using the inventive tanning agents or the inventive method.
    • 本发明涉及通过使至少一种通式(I)的醛与至少另一相同或不同的式(I)的醛反应制备的鞣制剂,其中变量定义如下:Z是单一化学键 ,任选取代的C 1 -C 12 - 烷基,任选取代的C 5 -C 12 - 环烷基 或任选取代的C 6 -C 14 - 芳基,其中反应在酸催化剂的存在下进行,并且任选地在至少另外一种羰基化合物存在下进行 式(II)中,R 1至R 4彼此独立地表示氢,任选取代的C 1 -C 4烷基, 12-烯丙基,任选取代的C 3 -C 12 - 环烷基,任选取代的C 7 -C 13 - 或其任选取代的C 6 -C 14 - 芳基,条件是至少另一种式(I)的醛,其中th 当Z是单个化学键或没有任何氢原子的基团时,Z的基团含有α氢原子或至少另外一个式(I)的羰基化合物。 本发明还涉及一种用于生产所述鞣剂的方法,其用作固化剂,特别是使用本发明的鞣剂对动物皮肤进行预处理,鞣制或回火处理。 本发明还涉及含有一种或多种所述本发明的鞣剂的粉末活性剂,用于制备所述粉末活性剂的方法及其作为固化剂的用途,以及使用本发明的鞣剂或本发明制备的皮革 方法。