Radiation-curable, aqueous dispersions, production and use thereof
    3.
    发明授权
    Radiation-curable, aqueous dispersions, production and use thereof 失效
    可辐射固化的水分散体,其生产和使用

    公开(公告)号:US5684081A

    公开(公告)日:1997-11-04

    申请号:US677289

    申请日:1996-07-09

    摘要: The present invention relates to polyester acrylate/urethane dispersions based on polyester acrylate prepolymers containing hydroxyl groups, obtainable by polyaddition of A. 40-90 wt. % of one or more polyester acrylate prepolymers containing hydroxyl groups and having an OH content of 40-120 mg of KOH/g and B. 0.1-20 wt. % of one or more mono- and/or difunctional compounds reactive towards isocyanate groups, which compounds contain groups which are cationic, artionic and/or have a dispersant action due to ether groups with C. 10-50 wt. % of one or more polyisocyanates D. 0.0-30 wt. % of polyols together with a subsequent reaction with E. 0.1-10 wt. % of one or more di- and/or polyamines.

    摘要翻译: 本发明涉及基于聚丙烯酸酯预聚物的聚酯丙烯酸酯/聚氨酯分散体,所述聚酯丙烯酸酯预聚物含有羟基,可通过加入A.40-90wt。 %的一种或多种含羟基并且OH含量为40-120mg KOH / g和聚丙烯酸酯预聚物的聚酯丙烯酸酯预聚物。 %的一种或多种对异氰酸酯基团反应的单和/或二官能化合物,该化合物含有阳离子,挥发性和/或由于醚基团而具有分散作用的基团。 %的一种或多种多异氰酸酯D. 0.0-30wt。 %的多元醇与随后的反应与E. 0.1-10wt。 %的一种或多种二胺和/或多胺。

    Process of preparing alkylhydroxyalkylcellulose
    9.
    发明授权
    Process of preparing alkylhydroxyalkylcellulose 有权
    制备烷基羟烷基纤维素的方法

    公开(公告)号:US07402668B2

    公开(公告)日:2008-07-22

    申请号:US10197070

    申请日:2002-07-17

    CPC分类号: C08B11/193

    摘要: A process of preparing alkylhydroxyalkylcellulose (e.g., methylhydroxyethylcellulose and methylhydroxypropylcellulose) by reaction of cellulose in the presence of alkali metal hydroxide with an alkylating agent and a hydroxyalkylating agent is described. The process includes: (a) alkalizing cellulose by means of 0.9 to 2.9 equivalents of an alkali metal hydroxide I/AGU of the cellulose in the form of an aqueous alkali metal hydroxide solution, in the presence of a suspension medium containing at least 0.2 equivalents of an alkylating agent I/AGU of the cellulose; (b) reacting the alkalized cellulose of step (a) with alkylating agent I and a hydroxyalkylating agent at a temperature above 65° C.; (c) adding additional alkali metal hydroxide 11 in the form of an aqueous alkali metal hydroxide solution; and (d) adding additional alkylating agent 11 in an amount of at least the absolute value of the difference between (i) the number of equivalents of alkylating agent I/AGU of the cellulose already added, and (ii) the total number of equivalents of alkali metal hydroxide/AGU of the cellulose added. Additional alkylating agent 11 is not added in step (d) if (i) the number of equivalents of alkylating agent I/AGU of the cellulose already added exceeds (ii) the total number of equivalents of alkali metal hydroxide/AGU of the cellulose already added. In a further step (e), the alkylhydroxyalkylcellulose is isolated from the reaction mixture. The isolated alkylhydroxyalkylcellulose may be optionally purified.

    摘要翻译: 描述了通过在碱金属氢氧化物存在下纤维素与烷基化剂和羟烷基化剂反应来制备烷基羟烷基纤维素(例如甲基羟乙基纤维素和甲基羟丙基纤维素)的方法。 该方法包括:(a)在含有至少0.2当量的悬浮介质存在下,通过0.9至2.9当量的碱金属氢氧化物I / AGU将纤维素碱化为碱金属氢氧化物水溶液形式的纤维素碱化纤维素 的纤维素的烷基化剂I / AGU; (b)在高于65℃的温度下使步骤(a)的碱化纤维素与烷基化剂I和羟烷基化剂反应; (c)加入碱金属氢氧化物水溶液形式的另外的碱金属氢氧化物11; 和(d)添加额外的烷基化剂11,其量至少为(i)已经加入的纤维素的烷基化剂I / AGU的当量数之间的差异的绝对值,和(ii)总当量数 的碱金属氢氧化物/ AGU的纤维素加入。 如果(i)已经加入的纤维素的烷基化剂I / AGU的当量数超过(ii)已经在纤维素中的碱金属氢氧化物/ AGU的当量的总数,则在步骤(d)中不加入另外的烷基化剂11 添加。 在另外的步骤(e)中,从反应混合物中分离烷基羟烷基纤维素。 分离的烷基羟烷基纤维素可以任选地纯化。