Dispersing asphaltenes in hydrocarbon refinery streams with
.alpha.-olefin/maleic anhydride copolymer
    6.
    发明授权
    Dispersing asphaltenes in hydrocarbon refinery streams with .alpha.-olefin/maleic anhydride copolymer 失效
    用α-烯烃/马来酸酐共聚物在烃精炼料流中分散沥青质

    公开(公告)号:US5214224A

    公开(公告)日:1993-05-25

    申请号:US910230

    申请日:1992-07-09

    Abstract: Dispersing asphaltenes in liquid hydrocarbons, particularly formed during the refining of crude petroleum, is disclosed. The dispersant comprises a free radically polymerized copolymer of an .alpha.-olefin of from about 10 to about 36 carbon atoms and maleic anhydride wherein the anhydride moieties along the copolymer backbone are substantially unhydrolyzed or otherwise not derivatized. The copolymer has a ratio of .alpha.-olefin to maleic anhydride of from about 1:1 to about 1:5 and a molecular weight of from 5000 to about 100,000. Alternatively the dispersant comprises a mixture of the .alpha.-olefin/maleic anhydride copolymer and an alkyl substituted phenol/formaldehyde liquid polymer, such as nonyl phenol/formaldehyde polymer, or a lipophilic/hydrophilic vinylic polymer, such as hydroxyethyl methacrylate/lauryl acrylate copolymer. Also disclosed is a liquid hydrocarbon dispersion containing asphaltenes and 1-100 ppm of the .alpha.-olefin/maleic anhydride copolymer.

    Abstract translation: 公开了在石油精炼期间特别形成的液体烃中沥青质分散体。 分散剂包含约10至约36个碳原子的α-烯烃和马来酸酐的自由基聚合共聚物,其中沿着共聚物主链的酸酐部分基本上未水解或以其它方式不衍生。 共聚物的α-烯烃与马来酸酐的比例为约1:1至约1:5,分子量为5000至约100,000。 或者,分散剂包括α-烯烃/马来酸酐共聚物和烷基取代的酚/甲醛液体聚合物如壬基苯酚/甲醛聚合物或亲脂性/亲水性乙烯基聚合物如甲基丙烯酸羟乙酯/丙烯酸月桂酯共聚物的混合物。 还公开了含有沥青质和1-100ppm的α-烯烃/马来酸酐共聚物的液体烃分散体。

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