Method for the heat removal from polymerization reactor
    1.
    发明授权
    Method for the heat removal from polymerization reactor 失效
    从聚合反应器中除热的方法

    公开(公告)号:US4408024A

    公开(公告)日:1983-10-04

    申请号:US232486

    申请日:1981-02-09

    摘要: In polymerizing an olefin, for example, in a polymerization reactor with a reflux condenser, a gas mixture withdrawn from the polymerization reactor is first washed before it reaches the heat transfer surface of the reflux condenser to remove active catalyst particles and polymer particles entrained therein and then condensed to obtain a condensed liquid, and the condensed liquid is returned to the polymerization reactor whereby the heat generated in the polymerization reactor is efficiently removed without causing any clogging of pipes, etc.

    摘要翻译: 在烯烃聚合中,例如在具有回流冷凝器的聚合反应器中,首先将从聚合反应器中排出的气体混合物在其到达回流冷凝器的传热表面之前进行洗涤以除去夹带的活性催化剂颗粒和聚合物颗粒, 然后冷凝,得到冷凝液,冷凝后的液体返回聚合反应器,由此可有效地除去在聚合反应器中产生的热量,而不会引起管道堵塞等。

    Method for producing fine particles using method of rapid expansion into poor solvent from supercritical fluid
    2.
    发明申请
    Method for producing fine particles using method of rapid expansion into poor solvent from supercritical fluid 审中-公开
    使用从超临界流体快速膨胀成不良溶剂的方法制造微粒的方法

    公开(公告)号:US20070102836A1

    公开(公告)日:2007-05-10

    申请号:US10586512

    申请日:2005-01-20

    IPC分类号: B29B9/00

    CPC分类号: B01J2/04 C08J3/122 Y02P20/544

    摘要: A method for producing high-molecular weight microspheres of the present invention includes the steps of dissolving or dispersing a high-molecular material in a high pressure fluid containing a supercritical fluid and an entrainer, and spraying the resultant high pressure fluid into a poor solvent to cause rapid expansion. According to the production method, high-molecular weight microspheres or coated microspheres whose average particle size can be controlled can be produced.

    摘要翻译: 本发明的高分子量微球的制造方法包括将高分子材料溶解或分散在含有超临界流体和夹带剂的高压流体中的步骤,将得到的高压流体喷射到不良溶剂中 造成快速扩张。 根据制造方法,可以制造平均粒径可以控制的高分子量微球或涂布微球。

    Propylene-ethylene copolymer having improved stretchability
    3.
    发明授权
    Propylene-ethylene copolymer having improved stretchability 失效
    具有改善的拉伸性的丙烯 - 乙烯共聚物

    公开(公告)号:US4414373A

    公开(公告)日:1983-11-08

    申请号:US399146

    申请日:1982-07-16

    CPC分类号: C08F210/06

    摘要: In a process for producing polypropylene comprising polymerizing propylene in the presence of hydrogen and a catalyst system comprising (A) titanium trichloride obtained by reducing titanium tetrachloride with an organoaluminum compound and reacting the reduced solid with an ether represented by the formula:R.sup.1 --O--R.sup.2wherein R.sup.1 and R.sup.2 are defined hereinbefore, and a halogen compound selected from the group consisting of (i) halogen or interhalogen compounds of the formula, X.sup.1 X.sup.2.sub.a (wherein X.sup.1, X.sup.2 and a are defined hereinbefore), (ii) titanium halides, and (iii) organic halogen compounds, simultaneously or successively and (B) an organoaluminum compound, the improvement which comprises supplying ethylene together with propylene to the polymerization system such that the ethylene concentration in the vapor phase of the system based on the total amount of propylene, ethylene and hydrogen in the vapor phase of the system is 0.15 to 1.5 mol % to obtain a propylene-ethylene copolymer having an ethylene content of from 0.1 to 1.0 wt % is disclosed. The propylene-ethylene copolymer is improved in stretchability.

    摘要翻译: 在制备聚丙烯的方法中,包括在氢气存在下聚合丙烯和催化剂体系,所述催化剂体系包含(A)通过用有机铝化合物还原四氯化钛获得的三氯化钛,并将还原的固体与由下式表示的醚反应:R1-O- 其中R 1和R 2如上定义,卤素化合物选自(ⅰ)卤素或下式的卤代化合物:X1X2a(其中X1,X2和a定义如前),(ⅱ)卤化钛和 (iii)有机卤素化合物,同时或相继和(B)有机铝化合物,其改进包括将乙烯与丙烯一起供应到聚合体系中,使得基于丙烯总量的体系的气相中的乙烯浓度 ,系统的气相中的乙烯和氢为0.15〜1.5摩尔%,得到丙烯 - 乙烯共聚物 公开了乙烯含量为0.1〜1.0重量%。 丙烯 - 乙烯共聚物的拉伸性提高。

    Method of discharging slurry by varying valve openings
    4.
    发明授权
    Method of discharging slurry by varying valve openings 失效
    通过改变阀门开口排出浆料的方法

    公开(公告)号:US4257533A

    公开(公告)日:1981-03-24

    申请号:US21280

    申请日:1979-03-16

    CPC分类号: B01J4/008 Y10T137/86421

    摘要: A slurry containing polymer particles having an average particle diameter of 0.1 to 1 mm suspended therein is discharged smoothly from a discharge valve without valve clogging by operating the valve such that the degree of valve opening is set within a range II for a valve operating time t.sub.1 and within a range III for a valve operating time t.sub.2 ; the time t.sub.1 being from 5 to 60 seconds, the time t.sub.2 being from 1 to 10 seconds, the range II being a range of valve openings at which the valve is gradually clogged with the polymer particles discharged, and the range III being a range of valve openings at which the valve permits continuous discharge without clogging.

    摘要翻译: 含有悬浮在其中的平均粒径为0.1〜1mm的聚合物颗粒的浆料通过操作阀而从排气阀平稳地排出,没有阀堵塞,使得阀开度的程度设定在阀操作时间t1的范围II内 并且在阀操作时间t2的范围III内; 时间t1为5至60秒,时间t2为1至10秒,范围II为排出聚合物颗粒时阀门逐渐堵塞的阀门开口范围,范围III为 阀门开口,阀门允许连续排放而不堵塞。

    Process for the purification of highly crystalline polyolefins
    5.
    发明授权
    Process for the purification of highly crystalline polyolefins 失效
    纯化高结晶性聚烯烃的方法

    公开(公告)号:US4195145A

    公开(公告)日:1980-03-25

    申请号:US959806

    申请日:1978-11-13

    CPC分类号: C08F6/26 C08F6/02

    摘要: A process for purifying propylene homopolymers or copolymers which comprises:(i) polymerizing or copolymerizing propylene with other unsaturated hydrocarbon monomers in liquid propylene in the presence of a catalyst system consisting essentially of (a) an activated titanium trichloride obtained by reducing titanium tetrachloride with an organo-aluminum compound followed by activation and (b) an organo-aluminum compound;(ii) introducing the resulting polymer slurry into an upper portion of a counter-current washing tower to counter-currently contact the polymer slurry with a C.sub.3 -C.sub.8 alcohol and liquid propylene, whereby said catalyst is deactivated and at the same time the propylene homopolymers or copolymers dissolved in the polymer slurry and the catalyst are removed by washing, wherein said alcohol is used in an amount 0.1 to 50 times by mole based on said organo-aluminum compound (b) and is supplied to the washing tower lower than the point of introduction of said polymer slurry, and said liquid propylene is supplied to a lower portion of the washing tower; and(iii) then after removing volatile monomers by flashing, contacting the powdery propylene homopolymers or copolymers with a gaseous epoxide at a temperature lower than melting point of said polymer or copolymer.

    摘要翻译: 一种用于纯化丙烯均聚物或共聚物的方法,其包括:(i)在液体丙烯中,在催化剂体系存在下,将丙烯与其它不饱和烃单体聚合或共聚,所述催化剂体系基本上由(a)通过将四氯化钛还原成四氯化钛得到的活化三氯化钛 有机铝化合物,然后活化,(b)有机铝化合物; (ii)将所得聚合物浆料引入逆流洗涤塔的上部,以与C3-C8醇和液体丙烯反应地接触聚合物浆料,由此所述催化剂失活,同时丙烯均聚物 或溶解在聚合物浆料中的共聚物和催化剂通过洗涤除去,其中所述醇的用量相对于所述有机铝化合物(b)为0.1至50倍摩尔量,并且供应至低于该点的洗涤塔 引入所述聚合物浆料,并将所述液态丙烯供应到洗涤塔的下部; 和(iii)然后在通过闪蒸除去挥发性单体之后,在低于所述聚合物或共聚物的熔点的温度下使粉末丙烯均聚物或共聚物与气态环氧化物接触。

    Method For Preparing Composite Fine Particles
    6.
    发明申请
    Method For Preparing Composite Fine Particles 审中-公开
    复合微粒制备方法

    公开(公告)号:US20080274275A1

    公开(公告)日:2008-11-06

    申请号:US11791578

    申请日:2005-11-21

    IPC分类号: B05D7/00

    摘要: A method for preparing composite microspheres of a high-molecular material and a core substance includes the steps of: dissolving a high-molecular material and dispersing a core substance in a high pressure fluid containing a supercritical fluid and an entrainer, under a shear stress of 1 Pa or more; and spraying the resultant high pressure fluid containing the high-molecular material and the core substance into a poor solvent to cause rapid expansion. According to the method composite microspheres having a uniform size of several micrometers or less, and more preferably nanometer order (a size of 1 μm or less) can be obtained.

    摘要翻译: 制备高分子材料和核心物质的复合微球的方法包括以下步骤:将高分子材料溶解并将核心物质分散在含有超临界流体和夹带剂的高压流体中,在剪切应力 1 Pa以上; 并将含有高分子材料和核心物质的所得高压流体喷射到不良溶剂中以引起快速膨胀。 根据该方法,可以获得具有几微米或更小的均匀尺寸,更优选纳米级(1μm或更小的尺寸)的复合微球。

    Process for producing propylene copolymer
    8.
    发明授权
    Process for producing propylene copolymer 失效
    制备丙烯共聚物的方法

    公开(公告)号:US4367322A

    公开(公告)日:1983-01-04

    申请号:US291701

    申请日:1981-08-10

    IPC分类号: C08F4/64 C08F210/06

    CPC分类号: C08F210/06 Y10S526/916

    摘要: In a process for producing propylene copolymer containing about 80 to 99 mol % propylene and about 1 to 20 mol % ethylene and/or an .alpha.-olefin having 4 to 18 carbon atoms using a Ziegler-Natta catalyst, the improvement which comprises said Ziegler-Natta catalyst comprising:(A) titanium trichloride prepared by reducing titanium tetrachloride with an organoaluminum compound and activating the product; and(B) an organoaluminum compound;with the molar ratio of (B)/(A) being about 20 to 100.

    摘要翻译: 在使用齐格勒 - 纳塔催化剂的丙烯共聚物的制备方法中,所述丙烯共聚物含有约80-99摩尔%的丙烯和约1-20摩尔%的乙烯和/或具有4-18个碳原子的α-烯烃,其改进包括所述齐格勒 - 纳塔催化剂,其包含:(A)通过用有机铝化合物还原四氯化钛制备的三氯化钛并活化该产物; 和(B)有机铝化合物; (B)/(A)的摩尔比为约20至100。

    Process for producing a propylene-ethylene copolymer having improved
stretchability
    9.
    发明授权
    Process for producing a propylene-ethylene copolymer having improved stretchability 失效
    制备具有改善的拉伸性的丙烯 - 乙烯共聚物的方法

    公开(公告)号:US4355144A

    公开(公告)日:1982-10-19

    申请号:US257431

    申请日:1981-04-24

    CPC分类号: C08F210/06

    摘要: In a process for producing polypropylene comprising polymerizing propylene in the presence of hydrogen and a catalyst system comprising (A) titanium trichloride obtained by reducing titanium tetrachloride with an organoaluminum compound and reacting the reduced solid with an ether represented by the formula:R.sup.1 -O-R.sup.2wherein R.sup.1 and R.sup.2 are defined hereinbefore, and a halogen compound selected from the group consisting of (i) halogen or interhalogen compounds of the formula, X.sup.1 X.sup.2.sub.a (wherein X.sup.1, X.sup.2 and a are defined hereinbefore), (ii) titanium halides, and (iii) organic halogen compounds, simultaneously or successively and (B) an organoaluminum compound, the improvement which comprises supplying ethylene together with propylene to the polymerization system such that the ethylene concentration in the vapor phase of the system based on the total amount of propylene, ethylene and hydrogen in the vapor phase of the system is 0.15 to 1.5 mol % to obtain a propylene-ethylene copolymer having an ethylene content of from 0.1 to 1.0 wt % is disclosed. The propylene-ethylene copolymer is improved in stretchability.

    摘要翻译: 在制备聚丙烯的方法中,包括在氢气存在下聚合丙烯和催化剂体系,所述催化剂体系包含(A)通过用有机铝化合物还原四氯化钛获得的三氯化钛,并将还原的固体与由下式表示的醚反应:R1-O- 其中R 1和R 2如上定义,卤素化合物选自(ⅰ)卤素或下式的卤代化合物:X1X2a(其中X1,X2和a定义如前),(ⅱ)卤化钛和 (iii)有机卤素化合物,同时或相继和(B)有机铝化合物,其改进包括将乙烯与丙烯一起供应到聚合体系中,使得基于丙烯总量的体系的气相中的乙烯浓度 ,系统的气相中的乙烯和氢为0.15〜1.5摩尔%,得到丙烯 - 乙烯共聚物 公开了乙烯含量为0.1〜1.0重量%。 丙烯 - 乙烯共聚物的拉伸性提高。