USE OF ANTIMICROBIAL ETHYLENE COPOLYMERS FOR PACKAGING APPLICATIONS

    公开(公告)号:WO2019110205A1

    公开(公告)日:2019-06-13

    申请号:PCT/EP2018/079821

    申请日:2018-10-31

    IPC分类号: C08F210/02 C08F2/01 C08F2/34

    摘要: Use of an ethylene copolymer having a melt flow index (MFI) of at most ≤ 45 g/10min as measured according to ISO1133:201 1 measured at 190 °C and 2.16 kg and / or having an average molecular weight Mw≥ 50 kg/mol for production of packaging applications, production of food packages or production of film applications, wherein the ethylene copolymer is obtained via a process for the production of ethylene copolymers in a free-radical high-pressure polymerization in a tubular reactor, wherein • the process comprises a feed composition comprising ethylene and one or more co-monomers as reactants wherein at least one of the co-monomers is a compound having the structure of Formula (I): Formula (I), wherein R 1 = H or CH 3 ; X = O or NH; n = 1 -10 R 2 , R 3 = H or CH 3 or saturated aliphatic structure consisting of hydrogen atoms and 1-10 carbon atoms, wherein the aliphatic structure can be linear, branched and/or cyclic; and wherein R 2 and R 3 can be individually selected; and wherein • the tubular reactor is operated at a pressure of ≥ 200 and ≤ 280 MPa; • the average reaction peak temperature is ≥ 220°C and ≤ 300°C; • the composition comprising one or more of co-monomers is fed to the reactor in one or more feed inlets of said tubular reactor; and each co-monomer according to Formula (I) is fed to the tubular reactor in quantities of ≤ 2.0 mol % with regard to the total feed composition of ethylene and the one or more co-monomers.

    METHOD FOR PRODUCING CLEAN THERMOPLASTIC PARTICLES
    3.
    发明申请
    METHOD FOR PRODUCING CLEAN THERMOPLASTIC PARTICLES 审中-公开
    生产清洁热塑性颗粒的方法

    公开(公告)号:WO2015180922A1

    公开(公告)日:2015-12-03

    申请号:PCT/EP2015/059413

    申请日:2015-04-29

    IPC分类号: C08F6/28

    摘要: A process for increasing purity of a low density polyethylene (LDPE) composition, comprising the steps of: a) providing a melted composition comprising LDPE having Mn of at least 5.0 kg/mol according to size exclusion chromatography, Mw of at least 50 kg/mol according to size exclusion chromatography, a density of 915 to 935 kg/m 3 according to ISO1183 and a melt flow rate of 0.10 g/10 min to 80 g/10 min according to ISO1133:2011 measured at 190 °C and 2.16 kg, and b) providing particles from the melted composition by: b1) mixing a supercritical fluid in the melted composition to obtain a solution saturated with the supercritical fluid and b2) expanding the solution through an opening to obtain the particles.

    摘要翻译: 一种用于提高低密度聚乙烯(LDPE)组合物的纯度的方法,包括以下步骤:a)根据尺寸排阻色谱法提供含有至少5.0kg / mol的Mn的LDPE的熔融组合物,至少50kg / 根据尺寸排阻色谱法,根据ISO1183的密度为915至935kg / m 3,根据ISO1133:2011在190℃和2.16kg下测量的熔体流动速率为0.10g / 10min至80g / 10min, 和b)通过以下方式提供来自熔融组合物的颗粒:b1)在熔融组合物中混合超临界流体以获得用超临界流体饱和的溶液,和b2)通过开口膨胀溶液以获得颗粒。

    PROCESS FOR THE PRODUCTION OF ETHYLENE POLYMERS
    5.
    发明申请
    PROCESS FOR THE PRODUCTION OF ETHYLENE POLYMERS 审中-公开
    生产乙烯聚合物的方法

    公开(公告)号:WO2017032506A1

    公开(公告)日:2017-03-02

    申请号:PCT/EP2016/066789

    申请日:2016-07-14

    摘要: 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 R 1 and R 2 may each individually be hydrogen or a moiety comprising≥1 and ≤5 carbon atoms, R 1 and R 2 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.

    摘要翻译: 本发明涉及一种在管状反应器中生产乙烯聚合物的方法,包括在所述管式反应器中使包含乙烯和一种或多种包含一种或多种环烯烃的组合物的进料组合物反应,其中环烯烃是具有 式(I):其中R可以是包含≥1和≤10个碳原子的部分; 其中R1和R2各自可以是氢或包含≥1和≤5个碳原子的部分,R1和R2可以相同或不同; 其中·管状反应器可以在≥200和≤250MPa的压力下操作; •平均反应峰值温度可以≥220℃和≤300℃; ●包含一种或多种环烯烃的组合物可以在所述管式反应器的一个或多个进料入口中进料到反应器中; 相对于总进料组成,所述环状烯烃可以以1.0摩尔%的量加入到管状反应器中。 这种方法允许生产具有高密度和高纯度的乙烯聚合物。

    PROCESS FOR THE PRODUCTION OF MODIFIED POLYETHYLENE MATERIALS.

    公开(公告)号:WO2019214975A1

    公开(公告)日:2019-11-14

    申请号:PCT/EP2019/060861

    申请日:2019-04-29

    IPC分类号: C08F8/46 C08F255/02 C08F10/02

    摘要: The present invention relates to a process for the production of modified polyethylene comprising adding a free radical initiator composition and a polar monomer in extrusion of polyethylene materials with a melt mass flow rate (MFR) as determined in accordance with ISO 1133-1 (2011) at 190°C under a load of 2.16 kg of between 0.5 and 75 g/10min characterized in that the free radical initiator composition is added in quantities between 0.01 wt% to 5 wt% compared to the total weight of the polyethylene material wherein the extrusion is performed at a temperature between 230°C and 350°C. Such process allows for the production of modified polyethylenes, such as having an amount of grafted polar monomer, such as maleic anhydride, of > 3 wt%, with low amount of free, unreacted monomer whilst maintaining or not significantly modifying melt properties such as melt mass flow rate.

    PROCESS FOR RECYCLING POLYOLEFIN
    8.
    发明申请

    公开(公告)号:WO2018121980A1

    公开(公告)日:2018-07-05

    申请号:PCT/EP2017/082415

    申请日:2017-12-12

    IPC分类号: C08J11/08 B29B17/02 C08L23/02

    摘要: 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 ºC 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.