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10 条记录 (耗时 0.019 秒)

    Manufacture of particulate homopolymers or copolymers of ethylene
    1.
    发明授权
    Manufacture of particulate homopolymers or copolymers of ethylene 失效
    颗粒均聚物或乙烯共聚物的制造

    公开(公告)号：US3941760A

    公开(公告)日：1976-03-02

    申请号：US478864

    申请日：1974-06-13

    申请人： Rudolf Herbeck ,  Erich Kolk ,  Guenther Schweier ,  Hans Schick ,  Friedrich Urban

    发明人： Rudolf Herbeck ,  Erich Kolk ,  Guenther Schweier ,  Hans Schick ,  Friedrich Urban

    IPC分类号： C08F4/00 ,  C08F4/60 ,  C08F10/00 ,  C08F4/02 ,  C08F10/02

    CPC分类号： C08F10/00 ,  Y10S526/908 ,  Y10S526/909

    摘要： Particulate polymers of ethylene are prepared by polymerization of ethylene or ethylene/.alpha. -monoalkene mixtures in a dry agitated bed (B) of the particulate polymer by means of a Ziegler/Natta catalyst system consisting of (1) a titanium-containing component and (2) an aluminum-containing component, the said components (1) and (2) being separately fed to the bed (B). Component (1) is a particulate reaction product (U) (of) (1.1) a substance of the formula TiCl.sub.3 . (AlCl.sub.3).sub.n where n is a number equal to from 0 to 0.34, and (1.2) a reaction product (R) of phosgene and a substnace (S) obtained from a substance of the formula Mg.sub.6 . Al.sub.2 . (OH).sub.16 . CO.sub.3 . (H.sub.2 O).sub.4 by calcination (heating), provided that (R) has a chlorine content of from 10 to 76% by weight and (U) has been obtained by milling (1.1) and (1.2) together.

    摘要翻译： 通过由（1）含钛组分和（1）的齐格勒/纳塔催化剂体系在颗粒聚合物的干燥搅拌床（B）中聚合乙烯或乙烯/α-单烯烃混合物来制备乙烯的颗粒聚合物， 2）含铝组分，所述组分（1）和（2）分别进料到床（B）。 组分（1）是式TiCl 3的物质的颗粒反应产物（U）（的）（1.1）。 （AlCl 3）n，其中n是等于0至0.34的数，和（1.2）光气的反应产物（R）和由式Mg 6的物质获得的基团（S）。 Al2。 （OH）16。 CO3。 （H），通过煅烧（加热），（R）的氯含量为10〜76重量％，（U）通过研磨（1.1）和（1.2）得到。

    Multi-stage isolation of high pressure polyethylene
    2.
    发明授权
    Multi-stage isolation of high pressure polyethylene 失效
    多级隔离高压聚乙烯

    公开(公告)号：US4093795A

    公开(公告)日：1978-06-06

    申请号：US687870

    申请日：1976-05-19

    申请人： Oskar Buechner ,  Gottfried Schlichthaerle ,  Friedrich Urban

    发明人： Oskar Buechner ,  Gottfried Schlichthaerle ,  Friedrich Urban

    IPC分类号： C08F10/02 ,  C08F110/02 ,  C08F6/26 ,  C08F6/28

    CPC分类号： C08F10/02 ,  C08F110/02

    摘要： A process for the manufacture of ethylene polymers by high pressure polymerization of ethylene, if desired mixed with other compounds copolymerizable with ethylene, and isolation of the reaction product in a multi-stage isolation zone. The molecular weight of the ethylene polymer can be varied by varying the temperature prevailing in the isolation zone. The isolation zone preferably consists of two stages, with a higher pressure prevailing in the first stage than in the second stage.

    摘要翻译： 通过乙烯的高压聚合制备乙烯聚合物的方法，如果需要，可与其他可与乙烯共聚的化合物混合，以及在多级隔离区中分离反应产物。 乙烯聚合物的分子量可以通过改变隔离区中的温度来改变。 隔离区优选地由两个阶段组成，在第一阶段中比在第二阶段中具有更高的压力。

    Manufacture of ethylene polymers in a two-zone tubular reactor at pressure above 500 bars
    7.
    发明授权
    Manufacture of ethylene polymers in a two-zone tubular reactor at pressure above 500 bars 失效
    在压力高于500巴的双区管式反应器中制造乙烯聚合物

    公开(公告)号：US4076919A

    公开(公告)日：1978-02-28

    申请号：US741939

    申请日：1976-11-15

    申请人： Friedrich Urban ,  Oskar Buechner ,  Ulrich Hartig ,  Hans Gropper

    发明人： Friedrich Urban ,  Oskar Buechner ,  Ulrich Hartig ,  Hans Gropper

    IPC分类号： C08F2/00 ,  C08F4/28 ,  C08F10/00 ,  C08F10/02

    CPC分类号： C08F10/02

    摘要： Ethylene polymers are manufactured in a tubular reactor under high pressure and at high temperatures in the presence of polymerization initiators. The polymerization is carried out in two different zones of the reactor, a mixture of ethylene, oxygen and regulator being fed into the first zone and a co-initiator having a half-life temperature, measured in benzene, of above 140.degree. C being additionally fed into the second zone. The co-initiator may be a peroxide or a hydroperoxide. The melt index, or the haze and gloss of a film produced from the resulting ethylene polymer, can be varied advantageously through the choice of the co-initiator.

    摘要翻译： 乙烯聚合物在管式反应器中在高压和高温下在聚合引发剂存在下制备。 在反应器的两个不同区域进行聚合，将乙烯，氧气和调节剂的混合物进料到第一区域中，另外在苯中测定的具有半衰期温度的共引发剂在140℃以上 进入第二区。 共引发剂可以是过氧化物或氢过氧化物。 可以通过选择共引发剂来有利地改变由所得乙烯聚合物制备的膜的熔体指数或雾度和光泽度。

    Process for the manufacture of graft polymers
    8.
    发明授权
    Process for the manufacture of graft polymers 失效
    制备接枝聚合物的方法

    公开(公告)号：US3949019A

    公开(公告)日：1976-04-06

    申请号：US497572

    申请日：1974-08-15

    申请人： Gerhard Zeitler ,  Heinz Mueller-Tamm ,  Friedrich Urban

    发明人： Gerhard Zeitler ,  Heinz Mueller-Tamm ,  Friedrich Urban

    IPC分类号： C08F255/00 ,  C08F255/02 ,  C08F265/04 ,  C08L23/26

    CPC分类号： C08F255/02

    摘要： Process for the manufacture of graft polymers from copolymers of ethylene with vinyl esters, acrylates or methacrylates by grafting an ethylenically unsaturated carboxylic acid thereto in the presence of a free-radical polymerization initiator. Homogeneous graft copolymers are obtained from which sheeting can be made. To this end, the unsaturated carboxylic acid is first caused to diffuse into the copolymer and the mixture is then extruded at temperatures above the crystallite melting point of the ethylene copolymer.

    摘要翻译： 通过在自由基聚合引发剂存在下将乙烯基不饱和羧酸接枝到乙烯基酯，丙烯酸酯或甲基丙烯酸酯的共聚物上来制备接枝聚合物的方法。 得到均匀的接枝共聚物，可从中制备片材。 为此，首先使不饱和羧酸扩散到共聚物中，然后在高于乙烯共聚物的微晶熔点的温度下挤出该混合物。

    Manufacture of ethylene polymers in an autoclave reactor
    9.
    发明授权
    Manufacture of ethylene polymers in an autoclave reactor 失效
    在高压釜反应器中制造乙烯聚合物

    公开(公告)号：US4074040A

    公开(公告)日：1978-02-14

    申请号：US758208

    申请日：1977-01-10

    申请人： Dieter Oeder ,  Hans Gropper ,  Friedrich Urban

    发明人： Dieter Oeder ,  Hans Gropper ,  Friedrich Urban

    IPC分类号： C08F10/00 ,  C08F2/02 ,  C08F2/34 ,  C08F10/02

    CPC分类号： C08F10/02

    摘要： Ethylene polymers are manufactured by polymerizing ethylene under high pressure at high temperatures in an autoclave reactor. The heat of reaction generated by the polymerization is removed, within the reactor, by a cooling system in which the cooling medium is ethylene; the pressure of the monomer in the cooling system should differ by from 0 to 200 bars from the pressure prevailing in the polymerization system, and the temperature of the monomer on entering the cooling system is at least 40.degree. C. lower than the temperature prevailing in the autoclave. The process permits an increase in the conversion achieved in the polymerization reaction.

    摘要翻译： 乙烯聚合物通过在高压釜反应器中在高压下高压聚乙烯来制造。 在反应器内通过冷却介质为乙烯的冷却系统除去聚合产生的反应热; 冷却系统中单体的压力应与聚合体系中的压力相差0至200巴，进入冷却系统的单体温度低于低于常温下的温度至少40℃ 高压灭菌器 该方法允许在聚合反应中实现的转化率增加。