HYDROGENATED POLYMERS WITH A RADIAL STRUCTURE HAVING A CORE BASED ON CALIXARENES AND USE THEREOF IN LUBRICANT COMPOSITIONS
    2.
    发明申请
    HYDROGENATED POLYMERS WITH A RADIAL STRUCTURE HAVING A CORE BASED ON CALIXARENES AND USE THEREOF IN LUBRICANT COMPOSITIONS 审中-公开
    具有基于加仑剂的核心的径向结构的氢化聚合物及其在润滑剂组合物中的用途

    公开(公告)号:US20170051224A1

    公开(公告)日:2017-02-23

    申请号:US15304757

    申请日:2015-04-16

    摘要: Hydrogenated polymers with a radial structure having a core made up of calixarenes of the general formula (I), to the core of which is linked a number P of hydrogenated linear polymer segments selected from: —hydrogenated homopolymers or copolymers of conjugated dienes; or —hydrogenated copolymers of said conjugated dienes and monoalkenyl arenes, and —mixtures thereof said formula (I) in which: —R1, R2, R3 and R4 are independently selected from hydrogen; a group containing carbon and hydrogen; a group also containing heteroatoms in addition to carbon and hydrogen; a group also containing silicon in addition to carbon, hydrogen and heteroatoms; —one of the two substituents R5 and R6 is hydrogen, while the other may be hydrogen or alkyl, with a number of carbon atoms between 1 and 6, preferably methyl and ethyl; —n is an integer in the range between 4 and 16.

    摘要翻译: 具有径向结构的氢化聚合物具有由通式(I)的杯芳烃构成的核心,其核心连接数个P的氢化的线性聚合物链段,其选自: ​​- 氢化均聚物或共轭二烯的共聚物; 或所述共轭二烯和单烯基芳烃的氢化共聚物,及其所述式(I)的混合物,其中:-R 1,R 2,R 3和R 4独立地选自氢; 含碳和氢的基团; 除碳和氢之外还含有杂原子的基团; 除了碳,氢和杂原子之外还含有硅的基团; 两个取代基R5和R6之一是氢,而另一个可以是氢或烷基,其中多个碳原子在1和6之间,优选甲基和乙基; - n是4和16之间的整数。

    PROCESS FOR THE PURIFICATION OF THE SOLVENT DERIVING FROM THE PRODUCTION OF ELASTOMERIC BLENDS

    公开(公告)号:US20190201807A1

    公开(公告)日:2019-07-04

    申请号:US16323694

    申请日:2016-08-11

    摘要: Process for the purification of the solvent deriving from the production of an elastomeric blend comprising the following steps: .(a) optionally, subjecting said solvent to a pre-washing (2) in the presence of at least one acid or basic aqueous solution; .(b) feeding said solvent to a liquid-liquid separation column (7); .(c) feeding the stream leaving the head of said liquid-liquid separation column (7) to an azeotropic distillation column (21); .(d) feeding the stream withdrawn laterally (side-withdrawal) from said azeotropic distillation column (21) to an adsorption section (34a/b); Said process allows to obtain a polymer grade solvent having a quality suitable for being used indifferently and contemporaneously in various types of production plants of elastomeric (co)polymers, i.e. in plants wherein an anionic (co)polymerization is carried out, and also in plants wherein a Ziegler-Natta (co)polymerization is carried out.