Method for ethylene polymerization in a tubular reactor with reduced output
    2.
    发明授权
    Method for ethylene polymerization in a tubular reactor with reduced output 有权
    在具有降低的产量的管式反应器中进行乙烯聚合的方法

    公开(公告)号:US08273835B2

    公开(公告)日:2012-09-25

    申请号:US13144355

    申请日:2010-01-14

    IPC分类号: C08F2/00 C08F10/02 B01J19/24

    摘要: Process for the preparation of ethylene homopolymers or copolymers in the presence of free-radical polymerization initiators at from 100° C. to 350° C. and pressures in the range of from 160 MPa to 350 MPa in a tubular reactor with at least two spatially separated initiator injection points, wherein injecting initiator rises the temperature of the reaction mixture in the reaction zone following the injection point, and the first initiator injection point of the tubular reactor is not provided with initiator or is provided with so little initiator that the temperature of the reaction mixture does not rise more than 20° C. in the first reaction zone and method for reducing the output of a high pressure tubular reactor for the homo- or copolymerization of ethylene in the presence of free-radical polymerization initiators with at least two initiator injection points, wherein feeding of free-radical polymerization initiator to the first initiator injection point is discontinued or reduced to a level that the temperature of the reaction mixture in the first reaction zone does not rise more than 20° C.

    摘要翻译: 在自由基聚合引发剂存在下,在100℃至350℃下制备乙烯均聚物或共聚物的方法,并且在具有至少两个空间位置的管式反应器中在160MPa至350MPa范围内的压力 分离的引发剂注入点,其中注射引发剂在注射点之后升高反应区域中的反应混合物的温度,并且管式反应器的第一引发剂注入点不具有引发剂,或者设置有少量引发剂, 反应混合物在第一反应区域中不会升高超过20℃,并且在自由基聚合引发剂存在下,降低高压管式反应器用于乙烯均聚或共聚的产物的方法与至少两种 引发剂注入点,其中自由基聚合引发剂向第一引发剂注入点的进料停止或减少 d达到第一反应区中的反应混合物的温度不升高超过20℃的水平。

    Process for the preparation of ethylene copolymers in the presence of free-radical polymerization initiator by copolymerizing ethylene, a bi- or multifunctional comonomer and optionally further comonomers
    4.
    发明授权
    Process for the preparation of ethylene copolymers in the presence of free-radical polymerization initiator by copolymerizing ethylene, a bi- or multifunctional comonomer and optionally further comonomers 有权
    在自由基聚合引发剂存在下通过共聚乙烯,双或多官能共聚单体和任选的其它共聚单体制备乙烯共聚物的方法

    公开(公告)号:US09238700B2

    公开(公告)日:2016-01-19

    申请号:US13996415

    申请日:2011-12-19

    IPC分类号: B05D3/02 C08F210/02 C08F2/38

    摘要: Process for preparing ethylene copolymers in the presence of free-radical polymerization initiator at pressures in the range of from 160 MPa to 350 MPa and temperatures in the range of from 100° C. to 350° C. in a tubular reactor by copolymerizing ethylene, a bi- or multifunctional comonomer and optionally further comonomers, wherein the bi- or multifunctional comonomer bears at least two different functional groups, of which at least one is a unsaturated group, which can be incorporated into the growing polymer chain, and at least another functional group can act as chain transfer agent in radical ethylene polymerization, ethylene copolymers obtainable by such a process, the use of the ethylene copolymers for extrusion coating and a process for extrusion coating a substrate selected from the group consisting of paper, paperboard, polymeric film, and metal, with such ethylene copolymers.

    摘要翻译: 在自由基聚合引发剂存在下,在160MPa至350MPa的压力范围内制备乙烯共聚物的方法,在管式反应器中通过共聚乙烯制备温度在100℃至350℃的方法, 双功能或多功能共聚单体和任选的其它共聚单体,其中双官能或多功能共聚单体具有至少两个不同的官能团,其中至少一个是不饱和基团,其可以并入生长的聚合物链中,并且至少另一个 官能团可以作为自由基乙烯聚合中的链转移剂,可通过这种方法获得的乙烯共聚物,使用乙烯共聚物进行挤出涂布,以及用于挤出涂布选自纸,纸板,聚合物膜 ,和金属,与这种乙烯共聚物。

    Ethylene polymerization in a high pressure reactor with improved initiator feeding
    5.
    发明授权
    Ethylene polymerization in a high pressure reactor with improved initiator feeding 有权
    在具有改进的引发剂进料的高压反应器中进行乙烯聚合

    公开(公告)号:US08217124B2

    公开(公告)日:2012-07-10

    申请号:US13144492

    申请日:2010-01-14

    IPC分类号: C08F2/00 B01J4/00 C08F10/02

    摘要: Process for the preparation of ethylene homopolymers or copolymers in a high pressure reactor with at least two spatially separated initiator injection points by polymerizing ethylene and optionally further monomers in the presence of at least two different mixtures of free-radical polymerization initiators at from 100° C. to 350° C. and pressures in the range of from 160 MPa to 350 MPa, wherein the process comprises the following steps: a) providing at least two different initiators as solution in a suitable solvent or in liquid state, b) mixing the initiators and optionally additional solvent in at least two static mixers and c) feeding each of the mixtures to a different initiator injection point of the high pressure reactor, and apparatus for feeding initiator mixtures to a high pressure reactor with at least two spatially separated initiator injection points.

    摘要翻译: 在具有至少两个空间分离的引发剂注入点的高压反应器中制备乙烯均聚物或共聚物的方法,其通过在100℃下在至少两种不同的自由基聚合引发剂混合物存在下聚合乙烯和任选的其它单体 至350℃,压力范围为160MPa至350MPa,其中该方法包括以下步骤:a)在合适的溶剂中或以液态提供至少两种不同的引发剂作为溶液,b)将 引发剂和任选地在至少两种静态混合器中的另外的溶剂,以及c)将每种混合物进料到高压反应器的不同引发剂注入点,以及用于将引发剂混合物供入具有至少两个空间分离的引发剂注入的高压反应器的装置 积分

    Method for carrying out radical ethylene high-pressure polymerization while preventing undesired polymer deposits
    9.
    发明授权
    Method for carrying out radical ethylene high-pressure polymerization while preventing undesired polymer deposits 有权
    进行自由基乙烯高压聚合同时防止不期望的聚合物沉积物的方法

    公开(公告)号:US06562915B2

    公开(公告)日:2003-05-13

    申请号:US10182563

    申请日:2002-07-31

    IPC分类号: C08F240

    摘要: In a process for the polymerization or copolymerization of ethylenically unsaturated monomers in the presence of polymerization initiators which decompose to form free radicals in a continuously operated polymerization apparatus comprising a fresh gas feed line, a precompressor, a postcompressor, a reactor, a pressure maintenance valve, a high-pressure circuit having a high-pressure product separator and a high-pressure circulation gas return line, a product valve and a low-pressure circuit having a low-pressure product separator and a low-pressure circulation gas return line, nitrogen monoxide or oxygen is introduced as inhibitor into the high-pressure circuit, into the low-pressure circuit and/or the precompressor.

    摘要翻译: 在用于在连续操作的聚合装置中分解形成自由基的聚合引发剂存在下烯键式不饱和单体的聚合或共聚的方法中,所述聚合引发剂包括新鲜气体进料管线,预压缩机,后压缩机,反应器,压力维持阀 具有高压产品分离器和高压循环气体返回管路的高压回路,具有低压产品分离器和低压循环气体返回管路的产品阀和低压回路,氮气 将一氧化碳或氧气作为抑制剂引入高压回路中,进入低压回路和/或预压缩机。

    Preparation of copolymers of ethylene with alkenecarboxylic acids
    10.
    发明授权
    Preparation of copolymers of ethylene with alkenecarboxylic acids 失效
    乙烯与烯烃羧酸的共聚物的制备

    公开(公告)号:US5739242A

    公开(公告)日:1998-04-14

    申请号:US544442

    申请日:1995-11-17

    IPC分类号: C08F210/02 C08F220/04

    CPC分类号: C08F210/02

    摘要: A process for the preparation of copolymers of ethylene and dicarboxylic acid in the presence of a free-radical inhibitor. The process comprises of warming a mixture of ethylene and C.sub.3 -C.sub.6 -alkenecarboxylic acid to a temperature of from 60.degree. to 100.degree. C. before addition of the free-radical inhibitor. The maximum polymerization temperature to recover said copolymers of ethylene is in the range of from 100.degree. to 260.degree. C.; and wherein said copolymer comprises from 94 to 99.5 mol % of ethylene and from 0.5 to 6.0 mol % of C.sub.3 -C.sub.6 -alkenecarboxylic acid.

    摘要翻译: 一种在自由基抑制剂存在下制备乙烯和二羧酸的共聚物的方法。 该方法包括在加入自由基抑制剂之前将乙烯和C 3 -C 6 - 链烯羧酸的混合物加热到60℃至100℃的温度。 回收所述乙烯共聚物的最大聚合温度在100至260℃的范围内。 并且其中所述共聚物包含94-99.5mol%的乙烯和0.5-6.0mol%的C 3 -C 6 - 烯烃羧酸。