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    • 6. 发明授权
    • Mixtures of alkylated methylolated 4,5-dihydroxy-imidazolidin-2-ones
    • 烷基化羟甲基化的4,5-二羟基 - 咪唑烷-2-酮的混合物
    • US06265589B1
    • 2001-07-24
    • US09331583
    • 1999-06-30
    • Pia HoisFerdinand LippertJürgen Reichert
    • Pia HoisFerdinand LippertJürgen Reichert
    • C07D23340
    • D06M13/432C07D233/40D06M2101/06
    • Described is a process for preparing mixtures of mixed-alkylated methylolated 4,5-dihydroxyimidazolidin-2-ones by reaction of methylolated 4,5-dihydroxyimidazolidin-2-one (DMDHEU) with a monohydric C1-5 alcohol and a polyol selected from the group consisting of ethylene glycol, diethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, glycerol and polyethylene glycols of the formula HO(CH2CH2O)nH where 3≦n≦20, the monohydric C1-5 alcohol and the polyol each being used in an amount of from 0.1 to 2.0 mol equivalents, based on DMDHEU, and the reaction being carried out at temperatures from 20° C. to 70° C. and at a pH of from 1 to 2.5, and the pH being set to a value of from 4 to 8 after the reaction.
    • 描述了通过羟甲基化的4,5-二羟基咪唑烷-2-酮(DMDHEU)与一元C 1-5醇和选自以下的多元醇的反应制备混合烷基化的羟甲基化的4,5-二羟基咪唑烷-2-酮的混合物的方法: 由乙二醇,二甘醇,1,2-丙二醇,1,3-丙二醇,1,2-丁二醇,1,3-丁二醇,1,4-丁二醇,甘油和聚乙二醇组成的组 式中HO(CH 2 CH 2 O)nH其中3 <= n <= 20,一元C 1-5醇和多元醇的用量为0.1至2.0摩尔当量,基于DMDHEU,反应在温度 从20℃至70℃,pH为1〜2.5,反应后pH设定为4〜8。