Tagging materials for gasoline
    15.
    发明授权
    Tagging materials for gasoline 失效
    汽油标签材料

    公开(公告)号:US5512066A

    公开(公告)日:1996-04-30

    申请号:US468495

    申请日:1995-06-06

    CPC classification number: C10L1/003 C10L1/16 C10L1/165 G01N31/22 C10L1/1616

    Abstract: Gasolines are identified from one another by adding to at least one of the gasolines at least one tagging material which is unique to that gasoline. Each unique tagging material has a number average molecular weight of at least 15,000 and is present at a level of less than 1.0 ppm of the gasoline. In addition, each unique tagging material must be soluble in the composition to be tagged, must not vaporize or thermally degrade at temperatures below about 120.degree. C., must not contribute to degradation of hydrocarbon filterability: and must not contribute to engine harm. A sample of the gasoline is vaporized to form a liquid residue; and the liquid residue is analyzed for the presence of the tagging material in the residue to thereby identify the particular gasoline.

    Abstract translation: 通过向汽油中的至少一个加入至少一种与该汽油独特的标签材料,来确定汽油。 每种独特的标签材料的数均分子量至少为15,000,并且汽油的含量低于1.0ppm。 此外,每个独特的标签材料必须溶于要标记的组合物中,不得在低于约120℃的温度下蒸发或热降解,不得有助于碳氢化合物过滤性的降解:并且不会对发动机造成损害。 汽油样品蒸发形成液体残留物; 并分析残留物中残留物中标记物质的存在,从而识别特定的汽油。

    Polymer combination useful in fuel oil to improve cold flow properties
    20.
    发明授权
    Polymer combination useful in fuel oil to improve cold flow properties 失效
    聚合物组合可用于燃油以改善冷流特性

    公开(公告)号:US4175926A

    公开(公告)日:1979-11-27

    申请号:US869647

    申请日:1978-01-16

    Inventor: Max J. Wisotsky

    Abstract: Ethylene polymers or copolymers, which are pour depressants for middle distillate fuel, in combination with a second polymer having alkyl groups of 6 to 18 carbon atoms, and derived from either dicarboxylic acid esters or olefins, are useful in improving the cold flow properties of middle distillate fuel oils wherein a portion, e.g., 5 wt. % or more, of the fuel boils above 700.degree. F.

    Abstract translation: 作为中间馏分燃料的倾点抑制剂的乙烯聚合物或共聚物与具有6至18个碳原子的烷基的第二聚合物组合并衍生自二羧酸酯或烯烃可用于改善中间体的冷流动性 馏出燃料油,其中一部分例如5wt。 燃料沸点高于700°F的%以上。

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