PRODUCTION OF COMB POLYMERS BY MEANS OF ESTERIFICATION
    11.
    发明申请
    PRODUCTION OF COMB POLYMERS BY MEANS OF ESTERIFICATION 审中-公开
    通过纯化生产聚碳酸酯

    公开(公告)号:US20130217808A1

    公开(公告)日:2013-08-22

    申请号:US13879527

    申请日:2011-12-07

    IPC分类号: C04B24/26

    摘要: The invention relates to a method for producing comb polymers, wherein at least one polycarboxylic acid or a salt thereof is esterified with at least one monohydroxy polyether, comprising the following steps: (a) preparing a reaction mixture containing at least one polycarboxylic acid; (b) heating the reaction mixture to at least 80° C.; (c) adding a base; and (d) esterifying the mixture at a reaction temperature of at least 80° C. obtaining a comb polymer, wherein at least one monohydroxy polyether is added to the reaction mixture in step (a) and/or (b). The invention further relates to comb polymers, cement compositions, molded bodies, and uses of comb polymers.

    摘要翻译: 本发明涉及一种生产梳形聚合物的方法,其中至少一种多元羧酸或其盐与至少一种单羟基聚醚酯化,包括以下步骤:(a)制备含有至少一种多元羧酸的反应混合物; (b)将反应混合物加热至至少80℃; (c)加入碱; 和(d)在至少80℃的反应温度下使混合物酯化,得到梳状聚合物,其中在步骤(a)和/或(b)中向反应混合物中加入至少一种单羟基聚醚。 本发明还涉及梳状聚合物,水泥组合物,成型体和梳状聚合物的用途。

    Process for preparing biocompatible polyurea
    15.
    发明申请
    Process for preparing biocompatible polyurea 审中-公开
    制备生物相容性聚脲的方法

    公开(公告)号:US20060122367A1

    公开(公告)日:2006-06-08

    申请号:US10525953

    申请日:2003-08-07

    IPC分类号: C08G73/00

    CPC分类号: C08G71/02

    摘要: A process is provided for preparing urea-containing polymers by contacting a hydroxy-functional organic compound having a functionality of two or more, with a coupling agent in the presence of a strong base, wherein the coupling agent is a carbonylbislactam compound having the general formula (I): wherein n is an integer from 3 to 15, and that the contacting is conducted at a temperature between 0° C. and 80° C. The polymers thus obtained are believed to be new and are useful e.g. in tissue engineering and coatings applications.

    摘要翻译: 提供了一种制备含尿素聚合物的方法,其通过使具有两个或多个官能度的羟基官能的有机化合物与强碱的存在下与偶联剂接触,其中偶联剂是具有通式的羰基双内酰胺化合物 (I):其中n为3至15的整数,并且接触在0℃至80℃之间的温度下进行。由此获得的聚合物被认为是新的,可用于例如 在组织工程和涂料应用中。