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    • 10. 发明公开
    • 폴리에테르에스테르 단량체의 제조 방법 및 시멘트 분산제
    • 聚酯单体和水泥分散剂的生产方法
    • KR1020010050216A
    • 2001-06-15
    • KR1020000049628
    • 2000-08-25
    • 다케모토 유시 가부시키 가이샤
    • 미쯔오키노시타카즈히사오카다
    • C07C67/08
    • C04B24/165C04B24/2647C04B2103/408C07C67/08C07C69/54
    • PURPOSE: Provided is a method for producing a high-quality polyether ester monomer in the absence of a solvent. And a cement dispersant is also provided, which consists of a water-soluble vinyl copolymer produced by using the same, as an intermediate material. CONSTITUTION: The polyether ester monomer is produced by subjecting a one-terminal-substituted polyalkylene glycol of the formula(1) and an unsaturated carboxylic acid of the formula(2) to esterification in the absence of a solvent and in the presence of 0.03-0.5 wt.%(based on the polyalkylene glycol) p-benzoquinone and/or phenothiazine under heating and reduced pressure by using an acid catalyst. Thus, produced polyester ester monomer of the formula(3) is used as an intermediate material for producing water-soluble vinyl monomer as a cement dispersant.
    • 目的:提供在不存在溶剂的情况下制造高品质聚醚酯单体的方法。 并且还提供了一种水泥分散剂,其由作为中间材料的由其使用的水溶性乙烯基共聚物组成。 构成:聚醚酯单体通过使式(1)的单末端取代的聚亚烷基二醇和式(2)的不饱和羧酸在不存在溶剂的情况下进行酯化,并且在0.03- 通过使用酸催化剂,在加热和减压下,0.5重量%(基于聚亚烷基二醇)对苯醌和/或吩噻嗪。 因此,生产式(3)的聚酯酯单体用作生产水溶性乙烯基单体作为水泥分散剂的中间体材料。