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    NUCLEATED POLYOLEFIN COMPOSITIONS AND METHODS AND USES THEREOF
    1.
    发明申请
    NUCLEATED POLYOLEFIN COMPOSITIONS AND METHODS AND USES THEREOF 审中-公开

    公开(公告)号：US20190225781A1

    公开(公告)日：2019-07-25

    申请号：US16315600

    申请日：2017-07-05

    申请人： Braskem S.A.

    发明人： Adriane Gomes Simanke ,  Marcia Pires Fortes Ferreira ,  Mariele Kaipers Stocker ,  Cristóvão De Lemos

    IPC分类号： C08L23/06 ,  C08L23/12 ,  C08K5/00 ,  C08K5/098 ,  B29C48/00

    摘要： Methods may include modifying the crystallization properties of a polymer composition including a polyolefin and a nucleating agent with the structure: wherein R1 and R2 are independently selected from hydrogen, alkyl, alkenyl, or aryl, wherein the alkyl, alkenyl, or aryl may be substituted with one or more carboxylate groups and M is a metal selected from Group I of the Periodic Table; or wherein R1 and R2 are independently hydrogen, alkyl, alkenyl, or aryl with the proviso that at least one of R1 or R2 is a carbon chain having 1 to 12 carbons with at least one of the carbons in the carbon chain covalently bound to the polyolefin, and wherein the alkyl, alkenyl, or aryl may be substituted with one or more carboxylate groups; and M is a metal selected from Group I of the Periodic Table.

    METHOD OF CONTROLLING POLYETHYLENE ARCHITECTURE
    8.
    发明申请
    METHOD OF CONTROLLING POLYETHYLENE ARCHITECTURE 有权

    公开(公告)号：US20220325019A1

    公开(公告)日：2022-10-13

    申请号：US17715678

    申请日：2022-04-07

    申请人： Braskem S.A.

    发明人： Jorge Manuel Jardim da Silva ,  Hadi Mohammadi ,  Kevin Herrington ,  Manoela Ellwanger Cangussu ,  Nei Sebastião Domingues Junior ,  Adriane Gomes Simanke

    IPC分类号： C08F218/10 ,  C08F2/38

    摘要： A method of controlling long chain branching in an ethylene-based polymer includes polymerizing ethylene with one or more optional monomers to form an ethylene-based polymer, and controlling a degree of long chain branching (LCB) in the ethylene-based polymer. The degree of LCB ranges from 0.1 per 1000 carbon atoms in the polymer backbone to 10 per 1000 carbon atoms in the polymer backbone, as measured by 13CNMR. The degree of LCB is controlled by adding one or more branched vinyl ester to the polymerizing step in an amount ranging from 0.01 mol % to 5.0 mol %, relative to total monomer content. A polymer composition contains the ethylene-based polymer. An article includes the polymer composition containing the ethylene-based polymer.