Removal of water haze from distillate fuel
    103.
    发明授权
    Removal of water haze from distillate fuel 失效
    从馏出燃料中清除水雾

    公开(公告)号:US4854938A

    公开(公告)日:1989-08-08

    申请号:US187186

    申请日:1988-04-28

    Abstract: A method of de-hazing distillate fuel is disclosed which comprises adding to the fuel a solution of a halide salt dissolved in an alcohol, and an alcohol soluble organosiloxane. The halide salt may be the chloride of magnesium, cadmium, copper, nickel or the tetra methyl ammonium group, for example the salt may have the formula MgCl.sub.2.6H.sub.2 O or (CH.sub.3).sub.4 NCl. The organosiloxane may be a cyclic, linear or branched material and may have e.g. a minor amount of siloxane units having the general formula ##EQU1## and a minor amount of siloxane units having the general formula ##EQU2## in which each R represents a substituted or unsubstituted hydrocarbon group of up to ten carbon atoms, a has the value 0, 1, 2, or 3, b has the value 0, 1 or 2, c has the value 1 or 2, and each Z represents a group linked to the silicon atom and comprising a functional organic group. Each group Z may be a group selected from the polyoxyalkylene group R'(OCH.sub.2 CH.sub.2).sub.p (OCH.sub.2 CH.CH.sub.3).sub.r OR", the amine group R'NHQ, the quaternary ammonium salt R'NR.sub.3.sup.2 X, the carboxylate group R'CO.sub.2 M, the sulphonate group R'SO.sub.3 M, or the hydroxyl group, in which R' represents a group which provides a link to the silicon atom through an oxygen or a carbon atom, p has a value in the range 1 to 100, r has a value in the range 0 to 50, the sum of p and q is in the range 2 to 100, R" represents a hydrogen atom, an alkyl group or an acyl group, Q represents a hydrogen atom or a group R'NHQ, each R.sup.2 represents an alkyl group, X represents a halide ion and each group M represents a cation.

    Method for demulsifying
    110.
    发明授权
    Method for demulsifying 有权
    破乳方法

    公开(公告)号:US07745501B2

    公开(公告)日:2010-06-29

    申请号:US11472727

    申请日:2006-06-22

    CPC classification number: B01D17/047 C08G77/46 C10G33/04 C10L1/285

    Abstract: The invention relates to a method for separating emulsions of oil and water, the method comprising incorporating a demulsifying-effective amount of a silicone demulsifier into an emulsion comprising an oil phase and an aqueous phase, the silicone demulsifier having a molecular structure comprising a polysiloxane backbone of at least two siloxane units covalently bound to (i) one or more alkylene oxide groups comprising one or more alkylene oxide units independently having one to five carbon atoms, and (ii) one or more oxirane-containing and/or oxetane-containing groups, wherein said oxirane or oxetane is optionally ring-opened by reaction with a chemical or group capable of ring-opening an oxirane or oxetane ring, respectively, and wherein a solid filler is substantially excluded from the silicone demulsifier and emulsion. The invention also relates to compositions containing the above-described demulsifier and the water and oil phases of an emulsion.

    Abstract translation: 本发明涉及一种用于分离油和水的乳液的方法,所述方法包括将破乳有效量的硅氧烷破乳剂掺入包含油相和水相的乳液中,所述硅氧烷破乳剂具有包含聚硅氧烷主链的分子结构 共价键合至少两个硅氧烷单元(i)一个或多个包含一个或多个独立地具有1-5个碳原子的氧化烯单元的环氧烷基团,和(ii)一种或多种含环氧乙烷和/或含氧杂环丁烷基团 其中所述环氧乙烷或氧杂环丁烷分别通过与能够开环环氧乙烷或氧杂环丁烷环的化学或基团反应而任意开环,并且其中基本上从硅氧烷破乳剂和乳液中排除固体填料。 本发明还涉及含有上述破乳剂和乳液的水相和油相的组合物。

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