Copolymer of ethylene and ion pair compound

    公开(公告)号:US12269905B2

    公开(公告)日:2025-04-08

    申请号:US17627433

    申请日:2020-07-16

    Abstract: The invention relates to an ethylene copolymer obtained by copolymerizing ethylene and an ion pair compound consisting of a cation of formula (I) and an anion selected from formulas (II), (III), (IV) and (V), wherein (I) where R1=H or C1-C10 alkyl; X═O or NH; R2=C1-C40 alkyl; R3, R4=H or C1-C10 alkyl which can be connected through a cyclic structure, R5=H or C1-C20, (II) (III) (IV) (V) where R6, R7, R9=H or C1-C10 alkyl; R8, R10=C1-C40 alkyl; Y, V, W═O or NH; n=1 to 20; Z═—SO3 or —C(O)O.

    Process for the production of ethylene polymers

    公开(公告)号:US10696763B2

    公开(公告)日:2020-06-30

    申请号:US15755123

    申请日:2016-07-14

    Abstract: The present invention relates to a process for the production of ethylene polymers in a tubular reactor comprising reacting in said tubular reactor a feed composition comprising ethylene and one or more composition comprising one or more cyclic olefin wherein the cyclic olefin is a compound having the structure of Formula (I): wherein R may be a moiety comprising ≥1 and ≤10 carbon atoms; wherein R1 and R2 may each individually be hydrogen or a moiety comprising ≥1 and ≤5 carbon atoms, R1 and R2 may be the same or different; wherein ⋅ the tubular reactor may be operated at a pressure of ≥200 and ≤280 MPa; ⋅ the average reaction peak temperature may be ≥220° C. and ≤300° C.; ⋅ the composition comprising one or more cyclic olefin may be fed to the reactor in one or more feed inlet of said tubular reactor; and ⋅ said cyclic olefin may be fed to the tubular reactor in quantities of ≤1.0 mol %, with regards to the total feed composition. Such process allows for the production of ethylene polymers having a high density and a high purity.

    Method for preparing ethylene copolymer

    公开(公告)号:US10150826B2

    公开(公告)日:2018-12-11

    申请号:US15327526

    申请日:2015-07-23

    Abstract: A process for preparing an ethylene copolymer in the presence of free-radical polymerization initiator at pressures from 150 MPa to 350 MPa and temperatures from 100° C. to 350° C., by copolymerizing ethylene and a comonomer having a C≡C bond and optionally further comonomers, wherein the comonomer having the C≡C bond is represented by formula wherein R1 is hydrogen or methyl; X1 is —CO—O— or —CO—NH—; R2 is —CH2—O—, —O—CO—, —Si(CH3)2—, —Si(CH3)2—O— or —CR5R6— wherein R5 and R6 are independently selected from hydrogen, methyl, ethyl and hydroxyl; n is an integer from 1 to 32 and R2 is same or different from each other when n is 2 to 32; and R3 is —C≡C— and R4 is hydrogen, C1-C10 linear or branched alkyl, C1-C10 linear or branched hydroxyalkyl or phenyl, or the unit R3-R4 stands for wherein X2 is F, Cl, Br or I.

    Polyolefin composition
    14.
    发明授权

    公开(公告)号:US10047218B2

    公开(公告)日:2018-08-14

    申请号:US15106432

    申请日:2014-12-10

    Abstract: The present invention relates to a polyolefin composition comprising a first heterophasic propylene copolymer and a second heterophasic propylene copolymer, wherein the first heterophasic propylene copolymer comprises: from 70-90 wt % of a first polypropylene having a melt flow index of from 55-85 g/10 min as measured according to ISO 1133 (2.16 kg and 230° C.), from 10-30 wt % of a first ethylene α-olefin copolymer having a melt flow index of from 2.5-5.0 g/10 min in accordance with ISO 1133 (2.16 kg and 230° C.), the respective amounts of first polypropylene and first ethylene α-olefin copolymer being based on the weight of the first heterophasic propylene copolymer and wherein the second heterophasic propylene copolymer comprises: from 60-85 wt % of a second polypropylene having a melt flow index of from 50-100 g/10 min as measured according to ISO 1133 (2.16 kg, 230° C.), from 15-40 wt % of a second ethylene α-olefin copolymer having a melt flow index of from 0.050-0.30 g/10 min in accordance with ISO 1133 (2.16 kg and 230° C.), the respective amounts of second polypropylene and second ethylene α-olefin copolymer being based on the weight of the second heterophasic propylene copolymer, and wherein a weight ratio of said first and second heterophasic propylene copolymer is from 1 to 10. The invention further relates to automotive parts comprising said composition and having good tiger stripe performance.

    Process for the preparation of polyolefin particles

    公开(公告)号:US11136438B2

    公开(公告)日:2021-10-05

    申请号:US15743865

    申请日:2016-06-30

    Abstract: A process for producing polyolefin particles from a polyolefin composition, comprising the steps of:
    a) providing a melted composition of a polyolefin and
    b) providing particles from the melted composition by:
    b1) mixing a first flow of a supercritical fluid in the melted composition in a pressure vessel to obtain a solution saturated with the supercritical fluid and
    b2) passing the solution from the pressure vessel through a throttling device to a spraying tower to expand the solution to obtain the polyolefin particles in the spraying tower, wherein a second flow of a supercritical fluid is injected in the throttling device, wherein the supercritical fluid is a supercritical fluid of a substance selected from the group consisting of CO2, NH3, H2O, N2O, CH4, ethane, propane, propylene, n-butane, i-butane, n-pentane, benzene, methanol, ethanol, isopropanol, isobutanol, chlorotrifluoromethane, monofluoromethane, 1,1,1,2-Tetrafluoroethane, toluene, pyridine, cyclohexane, cyclohexanol, o-xylene, dimethyl ether and SF6 and combinations thereof.

    Process for recycling polyolefin
    19.
    发明授权

    公开(公告)号:US11130850B2

    公开(公告)日:2021-09-28

    申请号:US16474849

    申请日:2017-12-12

    Abstract: The present invention relates to a process for recycling polyolefin, comprising the steps of: 1) feeding a solid post-consumer polyolefin composition comprising polyolefin and contaminants and a flow of an extraction fluid to an extractor having a pressure of 100-1000 bar and a temperature of 20-80° C. to obtain a solid extracted composition, 2) melting the solid extracted composition to obtain a melted composition, 3) providing particles from the melted composition by: 3a) mixing a flow of a supercritical fluid in the melted composition in a pressure vessel to obtain a solution saturated with the supercritical fluid and 3b) passing the solution from the pressure vessel through a throttling device to a spraying tower to expand the solution to obtain polyolefin particles in the spraying tower.

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