Metal salt fuel additive stabilized with a thiadiazole
    34.
    发明授权
    Metal salt fuel additive stabilized with a thiadiazole 失效
    用噻二唑稳定的金属盐燃料添加剂

    公开(公告)号:US5275630A

    公开(公告)日:1994-01-04

    申请号:US28645

    申请日:1993-03-05

    Inventor: Casper J. Dorer

    Abstract: A two component additive and a liquid hydrocarbon based fuel composition, containing the additive are disclosed. The fuel composition is comprised of a major amount of a liquid hydrocarbon diesel fuel and a minor fuel efficiency improving amount of the additive. The additive is composed of: (A) an overbased transition metal salt of a carboxylic acid; and (B) a compound represented by the general formula II: ##STR1## wherein R.sub.1 and R.sub.2 are independently hydrocarbyl. The additive may include a third component (C) which is a hydrocarbon-soluble ashless dispersant. The dispersant (C) is preferably a derivative of a substituted succinic acid wherein the hydrocarbyl substituent is derived from a polyalkylene characterized by a Mn value of about 500 to about 10,000 and a Mw/Mn value of about 1.0 to about 4.0.

    Abstract translation: 公开了含有添加剂的二组分添加剂和液体烃类燃料组合物。 燃料组合物由主要量的液态烃柴油燃料和少量燃料效率提高量的添加剂组成。 添加剂由以下组成:(A)羧酸的高碱性过渡金属盐; 和(B)由通式II表示的化合物:(*化学结构*)其中R 1和R 2独立地为烃基。 添加剂可以包括作为烃溶性无灰分散剂的第三组分(C)。 分散剂(C)优选是取代的琥珀酸的衍生物,其中烃基取代基衍生自聚亚烷基,其特征在于Mn值为约500至约10,000,Mw / Mn值为约1.0至约4.0。

    High thermal stability liquid hydrocarbons and methods for producing them
    36.
    发明授权
    High thermal stability liquid hydrocarbons and methods for producing them 失效
    高热稳定性液体烃及其制备方法

    公开(公告)号:US4280894A

    公开(公告)日:1981-07-28

    申请号:US583656

    申请日:1975-06-04

    Abstract: Liquid petroleum hydrocarbon blends having improved thermal stability at temperatures of 1000.degree. F. and higher are prepared by removing from the blends dissolved molecular oxygen and maintaining low levels of certain trace impurities in the blends. Trace impurity compounds that are maintained at low levels include: sulfur compounds classed as thiols, sulfides, disulfides and polysulfides; organic oxygen compounds classed as hydroperoxides, peroxides, paraffinic carboxylic acids, and phenols; nitrogen compounds classed as amides and alkyl-pyridines; and reactive olefins. Additional improvements in the blends can be obtained by providing them with a dibenzothiophene or a nitrogen compound classed as a paraffinic amine, carbazole or piperidine. The treated blends of this invention have substantially the same physical properties as similar blends that have not been so treated.

    Abstract translation: 通过从共混物中去除溶解的分子氧并保持混合物中某些痕量杂质的低含量,制备了在1000°F以上温度下具有改善的热稳定性的液体石油烃共混物。 维持在低水平的痕量杂质化合物包括:硫化物,硫化物,二硫化物和多硫化物; 分类为氢过氧化物,过氧化物,链烷烃羧酸和酚的有机氧化合物; 分类为酰胺和烷基 - 吡啶的氮化合物; 和活性烯烃。 通过提供共混物可以获得二苯并噻吩或分类为链烷烃胺,咔唑或哌啶的氮化合物,可以获得额外的改进。 本发明的经处理的共混物具有与尚未如此处理的类似共混物基本相同的物理性质。

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