IMPROVED LOW SEDIMENT PROCESS FOR FORMING BORATED DISPERSANT
    8.
    发明申请
    IMPROVED LOW SEDIMENT PROCESS FOR FORMING BORATED DISPERSANT 审中-公开
    改进形成分散分散剂的低成本方法

    公开(公告)号:WO1994013762A1

    公开(公告)日:1994-06-23

    申请号:PCT/US1993012194

    申请日:1993-12-14

    IPC分类号: C10M129/95

    摘要: A low sediment process for forming a borated, oil soluble, polymer-substituted, nitrogen- or ester-containing lubricating oil additive. A polymer-substituted, nitrogen- or ester-containing additive in the presence of a solvent therefor, is contacted under boronating reaction conditions in a reaction zone with particulate boric acid. The boric acid has a particle size distribution in lubricating oil characterized by a PHI value of not greater than about 450. The PHI value is the ratio of said particles' total spherical volume divided by said particles' total spherical external surface area; i.e., PHI = total spherical volume/total spherical surface area = SIGMA i (4/3)Ni pi di / SIGMA i Ni pi di wherein, for each of a plurality of distribution segments defining a particle size range; di is the average particle diameter for the ith distribution segment; Ni is the particle volume percent of the ith distribution segment; and the sum is taken over all the distribution segments.

    摘要翻译: 用于形成硼酸盐,油溶性,聚合物取代的含氮或酯的润滑油添加剂的低沉积方法。 在其溶剂存在下的聚合物取代的含氮或酯的添加剂在硼酸化反应条件下在反应区与硼酸颗粒接触。 硼酸在润滑油中的粒度分布特征在于PHI值不大于约450.PHI值是所述颗粒的总球体积除以所述颗粒的总球面外表面积的比率; 即,PHI =总球面体积/总球面表面积= SIGMA i(4/3)Ni pi di 3 / SIGMA i Ni pi di 2其中,对于限定粒度范围的多个分配段中的每一个 ; di是第i个分配段的平均粒径; Ni是第i个分配段的颗粒体积百分比; 并且所有分配段中的总和。