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    • 9. 发明申请
    • Copolymer Synthesis Process
    • 共聚物合成工艺
    • US20090312504A1
    • 2009-12-17
    • US12477565
    • 2009-06-03
    • Klaus K. LorenzAlexander KrausBarbara WimmerPetra WagnerChristian ScholzManfred Bichler
    • Klaus K. LorenzAlexander KrausBarbara WimmerPetra WagnerChristian ScholzManfred Bichler
    • C08F2/04
    • C04B28/02C04B24/2647C04B24/2694C04B2103/308C08F216/1416C08F220/26Y10S526/915C04B2103/302
    • Preparing a non-ionic copolymer having a hydrolysable monomer residue and a polyether macromonomer residue in a semicontinuous mode in a polymerization reactor associated with a metering device, including introducing polyether macromonomer and water into the reactor, wherein hydrolysable monomer which is added thereto forms a polymerization reaction mixture; introducing hydrolysable monomer into the metering device; adding hydrolysable monomer into the reactor from the metering device; passing a free radical polymerization initiator into the reactor before and/or during the addition of the hydrolysable monomer, the hydrolysable monomer and the polyether macromonomer reacting by free radical polymerization to form the non-ionic copolymer; and, subjecting the reaction mixture to polymerization while an addition rate of the hydrolysable monomer and/or at least a component of the polymerization initiator is varied stepwise or continuously. No monomer is introduced to incorporate ionic cement binding sites into the non-ionic copolymer.
    • 在与计量装置相关联的聚合反应器中制备具有可水解单体残基和聚醚大分子单体残基的非离子共聚物,其包括将聚醚大分子单体和水引入反应器,其中加入的可水解单体形成聚合 反应混合物; 将可水解单体引入计量装置; 从计量装置将可水解单体加入到反应器中; 在可水解单体加入之前和/或期间将自由基聚合引发剂通入自由基聚合引发剂,可水解单体和聚醚大分子单体通过自由基聚合反应形成非离子共聚物; 并且使反应混合物进行聚合,同时可水解单体和/或至少一种聚合引发剂组分的添加速率逐步或连续地改变。 没有引入单体以将离子水泥结合位点引入非离子共聚物。