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    Viscosity improver compositions providing improved low temperature characteristics to lubricating oil
    73.
    发明授权
    Viscosity improver compositions providing improved low temperature characteristics to lubricating oil 有权
    粘度改进剂组合物为润滑油提供改进的低温特性

    公开(公告)号：US08524645B2

    公开(公告)日：2013-09-03

    申请号：US12834175

    申请日：2010-07-12

    申请人： Chor Huang ,  Lewis Breon

    发明人： Chor Huang ,  Lewis Breon

    IPC分类号： C10M143/04 ,  C10M143/10 ,  C10M143/12

    CPC分类号： C10M143/00 ,  C10M2205/022 ,  C10M2205/024 ,  C10M2205/04 ,  C10M2205/06 ,  C10N2220/021 ,  C10N2220/022 ,  C10N2220/033 ,  C10N2230/02 ,  C10N2230/68 ,  C10N2240/10

    摘要： A lubricant composition comprising an oil of lubricating viscosity; (A) 0.05 to 1.5 percent by weight of a copolymer comprising 70 to 79 percent by weight of units derived from ethylene (“E”), having a Mw of 50,000 to 100,000, Mw/ Mn less than 3, density (“D”) of 860 to 896 kg/m3, and a melting point (“Tm”) of 15° C. to 60° C., wherein E and Tm fulfill the expression 3.44E−206≧Tm; and (B) 0.05 to 1.5 percent by weight of a block copolymer comprising a first block which comprises a vinyl aromatic comonomer and a second block which comprises a diene comonomer, the diene monomer-containing block being hydrogenated; wherein the weight ratio (A):(B) is 20:80 to 60:40; exhibits good low temperature performance and durability.

    摘要翻译： 一种润滑剂组合物，其包含润滑粘度的油; （A）0.05至1.5重量％的共聚物，其包含70至79重量％的衍生自乙烯（“E”）的单元，其Mw为50,000至100,000，Mw / Mn小于3，密度（“D” ）为860〜896kg / m 3，熔点（Tm）为15℃〜60℃，其中E和Tm满足表达式3.44E-206> = Tm; 和（B）0.05至1.5重量％的嵌段共聚物，其包含包含乙烯基芳族共聚单体的第一嵌段和包含二烯共聚单体的第二嵌段，含二烯单体的嵌段被氢化; 其中所述重量比（A）:( B）为20:80至60:40; 表现出良好的低温性能和耐久性。

    Concentrates of a highly branched polymer and functional fluids prepared therefrom
    76.
    发明授权
    Concentrates of a highly branched polymer and functional fluids prepared therefrom 失效
    高支化聚合物的浓缩物和由其制备的功能性流体

    公开(公告)号：US5484866A

    公开(公告)日：1996-01-16

    申请号：US149449

    申请日：1993-11-09

    申请人： Frederick C. Loveless ,  Wan-Li Liu

    发明人： Frederick C. Loveless ,  Wan-Li Liu

    IPC分类号： C08F212/12 ,  C10M143/10 ,  C08F236/00 ,  C08F212/06

    CPC分类号： C10M143/10 ,  C08F212/12 ,  C10M2205/04 ,  C10N2270/02

    摘要： A process for the preparation of a polymer concentrate which is a relatively concentrated solution in a base stock oil, e.g., a mineral oil or synthetic hydrocarbon oil, of a highly branched polymer having segments of a polymer of p-tert-butylstyrene (t-BS), comprising the free radical solution polymerization in the base stock oil of t-BS and optionally, one or more additional polymerizable monoethylenically unsaturated (monofunctional) monomers together with a small amount of a multiethylenically unsaturated (multifunctional) cross-linking agent, e.g., divinylbenzene (DVB). Optionally, the polymer solution obtained from the polymerization may be diluted with an additional amount of the base stock oil employed in the polymerization to obtain a polymer concentrate having a lower polymer concentration and viscosity than the polymerization solution. The polymer concentrate may then be mixed with an additional a amount of base stock oil which may be the same or different from the base stock oil present in the polymer concentrate to obtain a functional fluid, e.g., a lubricating oil, having improved viscometric properties.

    摘要翻译： 一种制备聚合物浓缩物的方法，该聚合物浓缩物是具有高分支聚合物的基础油（例如矿物油或合成烃油）中相对浓缩的溶液，其具有对叔丁基苯乙烯（t- BS），其包括在t-BS的基础油中的自由基溶液聚合和任选的一种或多种另外的可聚合单烯属不饱和（单官能）单体以及少量的多烯属不饱和（多官能）交联剂，例如 ，二乙烯基苯（DVB）。 任选地，由聚合得到的聚合物溶液可以用额外量的聚合中使用的基础油进行稀释，以获得聚合物浓度比聚合溶液低的聚合物浓度和粘度。 然后可以将聚合物浓缩物与额外的一定量的基础油相混合，所述基础油可以与存在于聚合物浓缩物中的基础油相同或不同，以获得具有改善的粘度特性的功能性流体，例如润滑油。