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    • 1. 发明授权
    • Process for preparing dialkylphosphinate salts
    • 制备二烷基次膦酸盐的方法
    • US5973194A
    • 1999-10-26
    • US198542
    • 1998-11-24
    • Norbert WeferlingHans-Peter SchmitzGunter Kolbe
    • Norbert WeferlingHans-Peter SchmitzGunter Kolbe
    • C01B25/163C07B61/00C07F9/30
    • C07F9/30
    • The invention relates to a process for preparing dialkylphosphinate salts, which comprisesa) reacting elemental yellow phosphorus with alkyl halides in the presence of alkali metal hydroxide or alkaline earth metal hydroxide to form a mixture which comprises as main constituents the salts of alkylphosphonous, phosphorous and hypophosphorous acids,b) adjusting the mixture to a pH below 7 and then reacting the mixture with olefins in the presence of a free-radical initiator andc) reacting the dialkylphosphinic acids obtained according to b) and/or alkali metal salts thereof with metal compounds of Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na and/or K to give the metal dialkylphosphinate salts.The invention likewise relates to the use of the metal dialkylphosphinate salts prepared by the process according to the invention to prepare flame retardants.
    • 本发明涉及一种制备二烷基次膦酸盐的方法,该方法包括:a)在碱金属氢氧化物或碱土金属氢氧化物存在下使元素黄磷与烷基卤化物反应形成一种混合物,该混合物包含烷基亚磷酸,磷和 次磷酸,b)将混合物调节至低于7的pH,然后在自由基引发剂存在下使该混合物与烯烃反应,和c)将根据b)获得的二烷基次膦酸与/或其碱金属盐与金属反应 Mg,Ca,Al,Sb,Sn,Ge,Ti,Zn,Fe,Zr,Ce,Bi,Sr,Mn,Li,Na和/或K的化合物,得到二烷基次膦酸金属盐。 本发明同样涉及通过本发明方法制备的二烷基次膦酸金属盐制备阻燃剂的用途。
    • 8. 发明授权
    • Processing for preparing salts of dialkylphosphinic acids
    • 加工制备二烷基次膦酸的盐
    • US06355832B1
    • 2002-03-12
    • US09610953
    • 2000-03-10
    • Norbert WeferlingHans-Peter SchmitzGünter Kolbe
    • Norbert WeferlingHans-Peter SchmitzGünter Kolbe
    • C07F930
    • C07F9/30
    • The invention relates to a process for preparing salts of dialkylphosphinic acids, which comprises a) reacting alkylphosphonous and/or hypophosphorous acid and/or alkali metal salts thereof with olefins in the presence of a free-radical initiator to give dialkylphosphinic acids and/or alkali metal salts thereof and b) reacting the dialkylphosphinic acids and/or alkali metal salts thereof obtained according to a) with metal compounds of Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na and/or K to give the metal dialkylphosphinate salts. The invention likewise relates to the use of the metal dialkylphosphinate salts prepared by the process according to the invention for preparing flame retardants.
    • 本发明涉及一种制备二烷基次膦酸的盐的方法,该方法包括:a)在自由基引发剂存在下,使烷基亚磷酸和/或次磷酸和/或其碱金属盐与烯烃反应,得到二烷基次膦酸和/或碱金属 其盐和b)使根据a)获得的二烷基次膦酸和/或其碱金属盐与Mg,Ca,Al,Sb,Sn,Ge,Ti,Zn,Fe,Zr,Ce,Bi,Sr, Mn,Li,Na和/或K,得到二烷基次膦酸金属盐。 本发明同样涉及通过本发明方法制备的二烷基次膦酸金属盐用于制备阻燃剂的用途。