Dispersing Agent Containing Copolymer Mixture
    18.
    发明申请
    Dispersing Agent Containing Copolymer Mixture 有权
    含有共聚物混合物的分散剂

    公开(公告)号:US20120041106A1

    公开(公告)日:2012-02-16

    申请号:US13133022

    申请日:2009-11-25

    IPC分类号: C04B24/26 C08L33/02

    摘要: The invention relates to a polymer composition containing 5 to 95% by weight of a copolymer H and 2 to 60% by weight of a copolymer K, the copolymers H and K each having polyether macromonomer structural units and acid monomer structural units, which are present in the copolymers H and K in each case in a molar ratio of 1:20 to 1:1, and at least 20 mol % of all structural units of the copolymer H and at least 25 mol % of all structural units of the copolymer K being present in each case in the form of acid monomer structural units, the polyether macromonomer structural units of the copolymer H having side chains containing in each case at least 5 ether oxygen atoms, the number of ether oxygen atoms per side chain of the polyether macromonomer structural units of the copolymer H varying in such a way that the corresponding frequency distribution diagram, in which the number of ether oxygen atoms per side chain of a polyether macromonomer structural unit is plotted along the abscissa and the associated frequency for the copolymer H is plotted along the ordinate, contains at least 2 maxima.

    摘要翻译: 本发明涉及一种聚合物组合物,其含有5〜95重量%的共聚物H和2〜60重量%的共聚物K,共聚物H和K各自具有聚醚大分子单体结构单元和酸单体结构单元,其存在 在共聚物H和K中的摩尔比为1:20至1:1的共聚物中,和共聚物H的所有结构单元的至少20摩尔%和共聚物K的所有结构单元的至少25摩尔% 在各种情况下以酸性单体结构单元的形式存在,共聚物H的聚醚大分子单体结构单元具有侧链含有至少5个醚氧原子,每个侧链上的醚氧原子的数量为聚醚大分子单体 共聚物H的结构单元以这样的方式变化,其中相应的频率分布图,其中聚醚大分子单体结构单元的每个侧链的醚氧原子的数量沿着横坐标绘制, 共聚物H的相关频率沿纵坐标绘制,含有至少2个最大值。

    Semi Continuously Operated Method for Producing Copolymers
    20.
    发明申请
    Semi Continuously Operated Method for Producing Copolymers 有权
    半连续生产共聚物的方法

    公开(公告)号:US20120004350A1

    公开(公告)日:2012-01-05

    申请号:US13133004

    申请日:2009-11-25

    IPC分类号: C08F224/00 C04B28/28 C08F2/10

    摘要: The invention relates to a process for the preparation of a copolymer in semicontinuous operation in a polymerization apparatus, comprising a polymerization reactor connected to a metering device, in each case acid monomer being initially taken in the metering device and polyether macromonomer, acid monomer and water in the polymerization reactor, acid monomer being metered from the metering device into the polymerization reactor, free radical polymerization initiator being passed into the polymerization reactor before and/or during the metering of the acid monomer into the polymerization reactor so that an aqueous medium in which acid monomer and polyether macromonomer are reacted with formation of the copolymer by free radical polymerization forms in the polymerization reactor, the molar ratio of acid monomer used altogether to polyether macromonomer used altogether being 20:1 to 1:1, the molar ratio of acid monomer initially taken in the polymerization reactor to the acid monomer metered into the polymerization reactor being 10:1 to 1:10 and the metering of the acid monomer being effected with the proviso that at least 70 mol % of the acid monomer metered in altogether are metered in the course of 5 to 19 minutes at a metering rate that is constant or varies to a limited extent.

    摘要翻译: 本发明涉及一种在聚合设备中半连续操作中制备共聚物的方法,其包括连接到计量装置的聚合反应器,在每种情况下,酸性单体最初被摄入计量装置和聚醚大分子单体,酸单体和水 在聚合反应器中,将酸单体从计量装置计量加入到聚合反应器中,自由基聚合引发剂在酸单体计量之前和/或期间进入聚合反应器进入聚合反应器, 酸性单体和聚醚大分子单体与聚合反应器中通过自由基聚合形式形成共聚物,总共使用的酸单体与聚醚大分子单体的摩尔比为20:1-1:1,酸单体的摩尔比 最初在聚合反应器中装入酸单体 进入聚合反应器中的比例为10:1至1:10,并且酸性单体的计量条件是条件是在5至19分钟的时间内将计量的至少70mol%的酸单体计量加入到 计量率恒定或在有限程度上变化。