会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Production of alkyl phosphites
    • 亚磷酸烷基酯的生产
    • US5344951A
    • 1994-09-06
    • US31838
    • 1993-03-16
    • Abbas Kadkhodayan
    • Abbas Kadkhodayan
    • C07F9/141C07F9/142C07F9/143
    • C07F9/143C07F9/142
    • This invention relates to an improved process for producing diesters of phosphorous acid. The process comprises (a) reacting phosphorous acid with monohydric alcohol in a petroleum distillate solvent while maintaining a reaction mass temperature within the range of from about 130.degree. to about 138.degree. C., and (b) refluxing the reaction mass during the reaction, wherein the phosphorous acid contains about 20 up to about 35 wt. % water, the molar ratio of alcohol to phosphorous acid used is within the range of from about 2.0:1 to about 4.0:1, and water is removed from the reaction mass essentially as it is formed during steps (b) and (c).
    • 本发明涉及一种生产亚磷酸二酯的改进方法。 该方法包括(a)在石油馏出物溶剂中使亚磷酸与一元醇反应,同时保持反应物质温度在约130℃至约138℃的范围内,和(b)在反应期间回流反应物质, 其中所述亚磷酸含有约20至约35wt。 %的水,所使用的醇与亚磷酸的摩尔比在约2.0:1至约4.0:1的范围内,并且基本上在步骤(b)和(c)中形成的水​​从反应物质中除去, 。