Method for the preparation of olefin polysulfides, the products obtained
and their utilization as lubricant additives
    23.
    发明授权
    Method for the preparation of olefin polysulfides, the products obtained and their utilization as lubricant additives 失效
    制备烯烃多硫化物的方法,获得的产品及其作为润滑剂添加剂的利用

    公开(公告)号:US4645610A

    公开(公告)日:1987-02-24

    申请号:US725278

    申请日:1985-04-19

    摘要: A method for the preparation of olefin polysulfides that can be used in particular as extreme pressure additives for lubricants is described. This method comprises: (1) reacting sulfur monochloride or dichloride with at least one mono-olefin containing 2 to 5 carbon atoms (in general isobutene) resulting in the formation of an adduct; (2) bringing into contact said adduct, conjointly with a hydrocarbyl halide, with a sulfur compound (for example, alkaline sulfides, hydrosulfides or polysulfides) and, in most cases, elemental sulfur, in an aqueous or aqueous-alcoholic medium; (3) heating the mixture and, after it has settled into two phases, separating the organic phase containing the olefin polysulfide; and if necessary (4) treating the product obtained with a base.The olefin polysulfides obtained contain a high proportion of sulfur, have a satisfactory viscosity and are sufficiently soluble in mineral oils as well as synthetic oils to be used as extreme pressure additives in the formulation of gear oils. Some of these products are also advantageous in the formulation of oils intended to be used in metal work.

    摘要翻译: 描述了可用于特别用作润滑剂的极压添加剂的烯烃多硫化物的制备方法。 该方法包括:(1)使一氯化硫或二氯化物与至少一种含2至5个碳原子的单烯烃(通常为异丁烯)反应,形成加合物; (2)在含水或含水醇介质中与硫化合物(例如碱性硫化物,氢硫化物或多硫化物)和多数情况下元素硫接触所述加合物,与烃基卤化物接触; (3)加热混合物,在两相分离后,分离含有烯烃多硫化物的有机相; 如果需要(4)处理用碱获得的产物。 获得的烯烃聚硫化物含有高比例的硫,具有令人满意的粘度,并且足够溶于矿物油以及用作齿轮油制剂中的极压添加剂的合成油。 这些产品中的一些在用于金属加工的油的配方中也是有利的。