Abstract:
A compound having formula (I) wherein R1 and R2 independently represent C1-C6 alkyl; R3 is C1-C6 alkyl; R4 is C1-C18 alkyl or C4-C18 heteroalkyl; m is zero, one, two or three; n is one, two or three; and j, k, p, q, r and s independently are zero, one or two; provided that at least one of j, k, p, q, r and s is not zero.
Abstract:
A hydrocarbon fuel antioxidant comprises a compound having a following molecular structure R1-(CnHm)-R2, a precursor or a derivative of the compound: wherein n and m are positive integers; —(CnHm)— group is a straight chain molecule segment formed by covalent linkage of carbon atoms which are more than or equal to 3 and less than or equal to 50; ,R1 and R2 comprise an aromatic ring or carboxylic acid or hydroxyl radical or alkyl group; the aromatic ring group may either be a single ring or polycyclic, and may also be a heterocycle containing oxygen or nitrogen, which may be provided with or not provided with a substituent group; the antioxidant contains more than one linear chain or ring conjugated bond formed by conjugated double bonds; the ring conjugated double bonds are located on the aromatic ring at the end part; the linear chain conjugated double bonds are located on a carbon chain in the middle; and the antioxidant has a prominent absorption peak in a 250-400 nm ultraviolet wavelength range. The hydrocarbon fuel antioxidant comprises carotinoid, vitamin A or vitamin E. The invention further provides applications and a method of application of the antioxidant. The antioxidant can promote the ultraviolet light stabilization effect of the fuels, but also can promote the oxygen stabilization effect of the fuels, and particularly can promote the combustion efficiency of the fuels and reduce the emission of contaminants when the antioxidant is together used with such additives as cetane number improver and octane number improver.
Abstract translation:烃燃料抗氧化剂包含具有以下分子结构R1-(CnHm)-R2的化合物,化合物的前体或衍生物:其中n和m是正整数; - (C n H m) - 基团是通过大于或等于3并且小于或等于50的碳原子的共价连接形成的直链分子链段; ,R 1和R 2包含芳环或羧酸或羟基或烷基; 芳环基可以是单环或多环,并且也可以是含有氧或氮的杂环,其可以具有或不具有取代基; 抗氧化剂含有多于一个由共轭双键形成的直链或环共轭键; 环共轭双键位于端部的芳环上; 线性链共轭双键位于中间的碳链上; 并且抗氧化剂在250-400nm紫外线波长范围内具有显着的吸收峰。 烃类燃料抗氧化剂包括类胡萝卜素,维生素A或维生素E.本发明还提供了抗氧化剂的应用和应用的方法。 抗氧化剂可以促进燃料的紫外光稳定作用,而且可以促进燃料的氧稳定化作用,特别是可以提高燃料的燃烧效率,并且当抗氧化剂与这种添加剂一起使用时减少污染物的排放 作为十六烷值改进剂和辛烷值改进剂。
Abstract:
An additive composition improves the stability and the engine performances of gas oils, including gas oils of the non-road type in compliance with the decree of 10 Dec. 2010, including: (a) at least one metal deactivator or chelating agent, (b) at least one antioxidant of the hindered phenol type (alkylphenol), (c) at least one dispersant and/or detergent, (d) at least one metal passivator, where the compositions include improved properties, in particular relative to the oxidation resistance, storage stability, thermal stability, reduction in fouling of the injectors, reduction in loss of power, reduction in the tendency of the filters to clog.