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    COMPOSITIONS FOR HIGH STABILIZATION OF EMULSIONS
    3.
    发明申请
    COMPOSITIONS FOR HIGH STABILIZATION OF EMULSIONS 有权

    公开(公告)号：US20220162350A1

    公开(公告)日：2022-05-26

    申请号：US17433030

    申请日：2020-02-14

    申请人： RHODIA OPERATIONS

    发明人： Helène MARTIN ,  Patrick MOREAU

    IPC分类号： C08F2/24 ,  C08F293/00

    摘要： The instant invention concerns compositions suitable for stabilizing emulsions, which comprise a mixture of:—at least an alkanolamide emulsifier; and—a block copolymer comprising:—a hydrophilic block comprising units deriving from a mono-alpha-ethylenically-unsaturated monomers; and—a block B preferably deriving from a mono-alpha-ethylenically-unsaturated monomers

    Method of preparing graft copolymer
    7.
    发明授权
    Method of preparing graft copolymer 有权

    公开(公告)号：US11034778B2

    公开(公告)日：2021-06-15

    申请号：US16619063

    申请日：2018-11-16

    申请人： LG CHEM, LTD.

    发明人： Wang Rae Joe ,  Bong Keun Ahn ,  Min Jung Kim ,  Yong Yeon Hwang ,  Jang Won Park

    IPC分类号： C08F2/24 ,  C08F279/04 ,  C08F285/00 ,  C08F279/06 ,  C08L51/06

    摘要： The present invention provides a method of preparing a graft copolymer, which comprises: emulsion-polymerizing one or more selected from the group consisting of an aromatic vinyl-based monomer to prepare a seed, a vinylcyano-based monomer and an alkyl (meth)acrylate-based monomer; emulsion-polymerizing the seed and an alkyl (meth)acrylate-based monomer to prepare a core; and emulsion-polymerizing the core, an aromatic vinyl-based monomer and a vinylcyano-based monomer to prepare a shell, wherein one or more steps selected from the group consisting of the steps of preparing the seed, the core and the shell comprises adding an emulsifier comprising a compound represented by Formula 1 below.

    Method of maintaining a melt flow index of a polyethylene polymer product
    8.
    发明授权
    Method of maintaining a melt flow index of a polyethylene polymer product 有权

    公开(公告)号：US10995161B2

    公开(公告)日：2021-05-04

    申请号：US16620102

    申请日：2018-06-06

    申请人： Univation Technologies, LLC

    发明人： Bruce J. Savatsky ,  R. Eric Pequeno ,  Brandon C. Locklear ,  Jim Farley

    IPC分类号： C08F10/02 ,  C08F2/24 ,  C08F4/6592

    摘要： The present disclosure provides a method of maintaining a target value of a melt flow index of a polyethylene polymer product being synthesized with a metallocene catalyst in a fluidized bed gas phase reactor. The method includes producing the polyethylene polymer product at the target value of the melt flow index with a metallocene catalyst in a fluidized bed gas phase reactor at a steady state in which the fluidized bed gas phase reactor is at a first reactor temperature and receives feeds of hydrogen and ethylene at a hydrogen to ethylene feed ratio at a first ratio value. When a change in reactor temperature is detected, the hydrogen to ethylene feed ratio is changed from the first ratio value to a second ratio value so as to maintain the melt flow index value of the polyethylene polymer product at the target value.

    SYNTHETIC POLYISOPRENE COPOLYMER AND PRODUCING METHOD THEREFOR
    9.
    发明申请
    SYNTHETIC POLYISOPRENE COPOLYMER AND PRODUCING METHOD THEREFOR 有权

    公开(公告)号：US20210079148A1

    公开(公告)日：2021-03-18

    申请号：US16954382

    申请日：2018-01-09

    申请人： Toyo Tire Corporation

    发明人： Norihiko Nakamura ,  Seiichi Kawahara

    IPC分类号： C08F279/02 ,  C08F36/08 ,  C08F2/24 ,  C08F6/16

    摘要： A synthetic polyisoprene copolymer is manufactured by stirring a synthetic polyisoprene rubber latex under the heating condition of 50° C. or higher, purifying the latex by centrifugation, adding a vinyl monomer to the purified synthetic polyisoprene rubber latex obtained and graft-copolymerizing the vinyl monomer. The synthetic polyisoprene copolymer is a copolymer in which a vinyl monomer is graft-copolymerized on the surface of synthetic polyisoprene particles, and which has a nanomatirx structure in which the synthetic polyisoprene rubber particles are dispersed in a continuous phase having a thickness of from 1 to 100 nm formed by graft chains in a phase-separated state.