Method for producing sulfonated aryl phosphines
    6.
    发明授权
    Method for producing sulfonated aryl phosphines 失效
    制备磺化芳基膦的方法

    公开(公告)号:US06610881B1

    公开(公告)日:2003-08-26

    申请号:US09937640

    申请日:2001-12-12

    IPC分类号: C07C30900

    摘要: The invention relates to a method for producing sulfonated aryl phosphines by reacting aryl phosphines with oleum. After reacting the aryl phosphines with oleum, the sulfonation mixture is firstly diluted with water and an inert gas stream is then fed through the diluted sulfonation mixture until SO2 is no longer released from the diluted sulfonation mixture. Afterwards, the sulfonation mixture is subsequently processed in a usual manner. The invention also relates to a method for producing solutions of sulfonated aryl phosphines by reacting the aryl phosphines with oleum, diluting the sulfonation mixture with water, extracting the aqueous solution using an organic solution consisting of an amine, and subsequently carrying out a reextraction using an aqueous solution having an inorganic base. According to the invention, the solution containing aqueous sulfonated aryl phosphines is adjusted to a pH value of up to 3 by adding acid, and an inert gas stream is then fed through the aqueous solution until sulfur dioxide is no longer released. The invention additionally relates to an aqueous catalyst solution containing rhodium and an aqueous solution of sulfonated aryl phosphines, treated as defined by the invention, for carrying out the hydroformylation of olefinically unsaturated compounds, and relates to the use thereof for carrying out the same.

    摘要翻译: 本发明涉及通过使芳基膦与发烟硫酸反应制备磺化芳基膦的方法。 在芳基膦与发烟硫酸反应之后,首先用水稀释磺化混合物,然后将惰性气体流通过稀释的磺化混合物,直到SO 2不再从稀释的磺化混合物中释放出来。 之后,磺化混合物随后以常规方式进行处理。 本发明还涉及通过使芳基膦与发烟硫酸反应制备磺化芳基膦的溶液的方法,将磺化混合物与水稀释,使用由胺构成的有机溶液萃取水溶液,然后使用 具有无机碱的水溶液。 根据本发明,通过加入酸将含有磺化芳基膦水溶液的溶液的pH值调至3,然后将惰性气体流通过该水溶液直至二氧化硫不再释放。 本发明另外涉及含有铑的水性催化剂溶液和由本发明定义的磺化芳基膦的水溶液,用于进行烯属不饱和化合物的加氢甲酰化,并涉及其用于进行烯属不饱和化合物的加氢甲酰化。

    Method of stabilizing aldehydes
    8.
    发明授权
    Method of stabilizing aldehydes 有权
    稳定醛的方法

    公开(公告)号:US6137013A

    公开(公告)日:2000-10-24

    申请号:US211937

    申请日:1998-12-15

    CPC分类号: C07C45/86

    摘要: A method of stabilizing aliphatic C.sub.3 -C.sub.14 -aldehydes against polymerization and autocondensation by the addition of alkaline substances to the aldehydes wherein the alkaline substances used are alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal carbonates, alkaline earth metal carbonates or alkali metal carboxylates which are added to the aldehyde to be stabilized in amounts of 0.05-20 ppm, based on the aldehyde.

    摘要翻译: 通过向醛中添加碱性物质来稳定脂肪族C 3 -C 14醛对聚合和自缩合的方法,其中使用的碱性物质是碱金属氢氧化物,碱土金属氢氧化物,碱金属碳酸盐,碱土金属碳酸盐或碱金属羧酸盐 基于醛加入到待稳定的醛中,其量为0.05-20ppm。