Rapid dissolving polymer compositions and uses therefor
    61.
    发明授权
    Rapid dissolving polymer compositions and uses therefor 失效
    快速溶解聚合物组合物及其用途

    公开(公告)号:US4837249A

    公开(公告)日:1989-06-06

    申请号:US121295

    申请日:1987-11-16

    Abstract: A particulate, free-flowing and rapid dissolving polymer composition is prepared by comminuting a high molecular weight thermoplastic or viscoelastic polymer at a temperature below its glass transition temperature while maintaining the polymer in an inert environment. A finely divided, solid coating agent is mingled with the comminuted polymer while maintaining the polymer particles in a cold and inert atmosphere. The particles of coating agent form a protective shell around each polymer particle by tumble mixing the components while raising the temperature of the mixture. The polymer composition finds use as a drag reducing agent; as an anti-misting agent; to enhance the efficiency of oil skimming processes and devices; and for the preparation of polymer solutions for other uses.

    Abstract translation: 通过在低于其玻璃化转变温度的温度下粉碎高分子量热塑性或粘弹性聚合物,同时将聚合物保持在惰性环境中来制备颗粒状,自由流动且快速溶解的聚合物组合物。 将细碎的固体涂层剂与粉碎的聚合物混合,同时将聚合物颗粒保持在冷和惰性气氛中。 包衣剂的颗粒通过在提高混合物的温度的同时通过混合组分形成围绕每个聚合物颗粒的保护壳。 聚合物组合物用作减阻剂; 作为防雾剂; 提高撇油过程和装置的效率; 并为其他用途制备聚合物溶液。

    Separation process
    62.
    发明授权
    Separation process 失效
    分离过程

    公开(公告)号:US4758354A

    公开(公告)日:1988-07-19

    申请号:US918896

    申请日:1986-10-15

    Abstract: A method for separating liquids, particularly hydrocarbons from water, whereby a small amount of a high molecular weight polymer is dissolved in the hydrocarbon to render it viscoelastic. A hydrocarbon layer is then mechanically removed from the water in a manner which causes rapid stretching of the hydrocarbon with attendant development of elastic properties in the hydrocarbon layer. The polymer may be applied to the surface of the hydrocarbon as droplets of a relatively concentrated polymer solution or as solid particulates having a polymer core covered by a powdered solid material which is non-reactive toward the polymer.

    Abstract translation: 一种从水中分离液体,特别是烃的方法,由此将少量高分子量聚合物溶解在烃中以使其具有粘弹性。 然后以引起碳氢化合物的快速拉伸的方式机械地从水中除去碳氢化合物,同时在烃层中具有弹性特性。 聚合物可以作为相对浓缩的聚合物溶液的液滴施加到烃的表面,或者作为具有聚合物芯的固体颗粒,其被聚合物芯覆盖,所述聚合物芯由对聚合物是非反应性的粉末状固体材料覆盖。

    ADDITIF DETERGENT POUR CARBURANT
    69.
    发明公开

    公开(公告)号:EP3350293A1

    公开(公告)日:2018-07-25

    申请号:EP16774539.7

    申请日:2016-09-15

    Inventor: PREVOST, Julie

    Abstract: The invention relates to the use of a block copolymer as detergent additive in an internal combustion engine liquid fuel. The block copolymer comprises: - at least one block A of following formula (I): (I) in which n is an integer ranging from 2 to 100, R1 is chosen from hydrogen and the methyl group, R2 is chosen from C
    1 to C
    34 hydrocarbon-based chains, - at least one block B of following formula (II): (II) in which p is an integer between 2 and 40, and G is chosen from: o an aryl group, and o an aryl group substituted by at least one group chosen from: • a group R, • a C
    1 to C
    12 hydrocarbon-based chain, and • a C
    1 to C
    12 hydrocarbon-based chain substituted by at least one group R, said group R being chosen from the group consisting of: - the groups comprising from 1 to 40 atoms chosen from C, N, and optionally O, and comprising at least one primary, secondary or tertiary amine function, and - quaternary ammoniums.

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