Preparation of overbased nitrogen-containing ashless dispersions
    388.
    发明授权
    Preparation of overbased nitrogen-containing ashless dispersions 失效
    含氮含量不分散剂的制备

    公开(公告)号:US3755172A

    公开(公告)日:1973-08-28

    申请号:US3755172D

    申请日:1971-08-02

    Inventor: WOODS W HUNT M

    Abstract: An overbased dispersion useful as a lubricating oil additive is prepared by adding a metal alkoxide-carbonate complex to an alcohol or alcohol-aromatic solution of a metal free, oil soluble, neutral or basic dispersing agent containing an acylated nitrogen atom. The dispersing agent is preferably an amide, imide or ester derived from the reaction of a high molecular weight alkenyl carboxylic acid or acid anhydride with an organic nitrogen-containing compound having at least one amino group or hydroxyl group. Concurrently with, or following, addition of the alkoxide-carbonate complex, the complex is hydrolyzed to yield a dispersion of fine particles of metal carbonate. The solvents are then stripped from the dispersion to form a bright, clear composition having a base number of from about 50 to about 250 and useful as an ashless detergent-dispersant additive to lubricating oils.

    Abstract translation: 通过向含有酰化氮原子的无金属,油溶性,中性或碱性分散剂的醇或醇 - 芳族溶液中加入金属醇盐 - 碳酸盐配合物来制备用作润滑油添加剂的高碱性分散体。 分散剂优选是由高分子链烯基羧酸或酸酐与具有至少一个氨基或羟基的有机含氮化合物的反应得到的酰胺,酰亚胺或酯。 同时加入或继续添加醇盐 - 碳酸盐络合物后,络合物被水解,得到金属碳酸盐细颗粒的分散体。 然后将溶剂从分散体中汽提,形成碱值为约50至约250的明亮,透明的组合物,并可用作润滑油中的无灰洗涤剂 - 分散剂添加剂。

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