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    • 2. 发明授权
    • Purification of tertiary phosphine oxides
    • 叔膦氧化物的纯化
    • US5892121A
    • 1999-04-06
    • US968180
    • 1997-11-12
    • Dieter HermelingRandolf HugoHardo Siegel
    • Dieter HermelingRandolf HugoHardo Siegel
    • C07F9/02C07F9/53
    • C07F9/025C07F9/5345
    • A process for the purification of tertiary phosphine oxides obtained in a Wittig synthesis as a contaminated by product resulting from the reaction of the corresponding tertiary phosphines, especially triphenylphosphine. The contaminated tertiary phosphine oxides coming from this Wittig synthesis have the formula I ##STR1## in which R.sup.1, R.sup.2, and R.sup.3 denote C.sub.1 -C.sub.12 alkyl, C.sub.5 -G.sub.8 cycloalkyl, aryl, C.sub.7 -C.sub.20 aralkyl, or C.sub.7 -C.sub.20 alkylaryl. The contaminated phosphine oxide I or phosphine oxide I-containing mixtures, optionally in an inert solvent, are first caused to react with an inorganic or organic acid at temperatures of from 0.degree. to 150.degree. C. to form a crystallized acid salt. The resulting salt crystals are then treated in a purifying step with water or an inorganic base or an organic base to again form the tertiary phosphine oxide. This reformed oxide is then extracted with an inert organic solvent from which the purified tertiary phosphine oxide is finally liberated.
    • 用于净化由Wittig合成得到的叔膦氧化物的方法,该方法被相应的叔膦特别是三苯基膦反应产生的产物污染。 来自该Wittig合成的受污染的叔膦氧化物具有式I(I),其中R 1,R 2和R 3表示C 1 -C 12烷基,C 5 -C 8环烷基,芳基,C 7 -C 20芳烷基或C 7 -C 20 烷基芳基 首先使受污染的氧化膦I或含氧化膦I的混合物,任选在惰性溶剂中,在0℃至150℃的温度下与无机或有机酸反应,形成结晶的酸盐。 然后将所得盐晶体在纯化步骤中用水或无机碱或有机碱处理,以再次形成叔氧化膦。 然后将该重整氧化物用惰性有机溶剂萃取,从其中最终释放纯化的叔氧化膦。
    • 7. 发明授权
    • Fine-grained water-absorbent particles with a high fluid transport and absorption capacity
    • 具有高流体输送和吸收能力的细颗粒吸水颗粒
    • US07759422B2
    • 2010-07-20
    • US11665883
    • 2005-10-14
    • Ulrich RiegelThomas DanielDieter HermelingMark Elliott
    • Ulrich RiegelThomas DanielDieter HermelingMark Elliott
    • C08G63/60
    • A61L15/60C08L33/02
    • The invention relates to finely divided water-absorbing polymeric particles having high fluid transportation and absorption performance, the Centrifuge Retention Capacity (CRC) being not less than 26 g/g, the absorbency under a load of 4.83 kPa (AUL0.7 psi) not less than 23 g/g and the Transportation Value (TV) not less than 15,000 cm3s, the Transportation Value (TV) being the product of Saline Flow Conductivity (SFC) and wicking absorption after 60 minutes (DA60) multiplied by 107, and wherein the wicking absorption after 60 minutes (DA60) is the weight of 0.9% by weight sodium chloride solution absorbed by 70 g of the water-absorbing polymeric particles in 60 minutes, wherein the water-absorbing polymeric particles are situated, during measurement, in a circularly round vessel which has an internal diameter of 6 cm and is sealed at its lower end by a sieve base of 36 μm mesh size, and the sieve base is in atmospheric contact with 0.9% by weight sodium chloride solution, processes for their preparation and also their use in hygiene articles and packaging materials.
    • 本发明涉及具有高流体输送和吸收性能的细分散的吸水聚合物颗粒,离心保留容量(CRC)不小于26g / g,负荷4.83kPa(AUL0.7psi)下的吸收性不是 运输价值(TV)不小于15,000立方厘米,运输价值(TV)是盐水流动电导率(SFC)的乘积和60分钟后的吸液吸收(DA60)乘以107,其中 60分钟后的芯吸吸收(DA60)是在60分钟内由70g吸水性聚合物颗粒吸收的0.9重量%氯化钠溶液的重量,其中吸水聚合物颗粒在测量期间位于 内径6厘米的圆形圆形容器,其下端由36微米的筛孔尺寸的筛基密封,筛基与0.9重量%氯化钠溶液大气接触, 他们的准备以及在卫生用品和包装材料中的使用。