Ceramic powders
    1.
    发明授权
    Ceramic powders 失效
    陶瓷粉

    公开(公告)号:US5196180A

    公开(公告)日:1993-03-23

    申请号:US689289

    申请日:1991-06-13

    摘要: A process for preparing ceramic powders suitable for pressing into articles comprises the dispersing of a particulate ceramic, preferably of particle size below 1 .mu.m, in water in the presence of ammonia or an alkylamine having a boiling point below that of water and spray - drying the dispersion to give powders. The process is particularly applicable to zirconia and gives rise to fine, free-flowing powders which can be processed into articles of uniform density.

    摘要翻译: PCT No.PCT / AU89 / 00425 Sec。 371日期1991年6月13日 102(e)日期1991年6月13日PCT提交1989年10月3日PCT公布。 出版物WO90 / 03838 日期:1990年04月19日。一种用于制备适于压制制品的陶瓷粉末的方法包括在氨或烷基胺的沸点存在下将颗粒陶瓷(优选粒径低于1μm)分散在水中,沸点低于 用水喷雾干燥分散体,得到粉末。 该方法特别适用于氧化锆,并产生细的,自由流动的粉末,其可加工成均匀密度的制品。

    Transition metal composition, production and use
    2.
    发明授权
    Transition metal composition, production and use 失效
    过渡金属组成,生产和使用

    公开(公告)号:US4392983A

    公开(公告)日:1983-07-12

    申请号:US285526

    申请日:1981-07-21

    CPC分类号: C08F10/00 C08F4/022

    摘要: A transition metal composition has the composition M.sub.m,X.sub.p,TYn'Z where M is a metal of Groups Ib, IIa, IIIb, VIIa or VIII of the Periodic Table, X is an anion, T is a transition metal of Groups IVA--VIA of the Periodic Table, Y is an anion, Z is a melt-producing compound, m' is greater than zero and less than 100, n' is greater than zero and less than 8 (m'+1), and p' is m' x(valency of M)/(valency of X). The compositions of this type may be transformed into a liquid by heating and the hot liquid sprayed and the spray cooled. The sprayed material has a useful particle form and may be used as a component of a polymerization catalyst to polymerize an unsaturated monomer such as ethylene.

    摘要翻译: 过渡金属组合物具有组成Mm,Xp,TYn'Z,其中M是元素周期表Ib,IIa,IIIb,VIIa或VIII族的金属,X是阴离子,T是IVA-VIA族的过渡金属 的周期表中,Y为阴离子,Z为产生熔融的化合物,m'大于零且小于100,n'大于零且小于8(m'+ 1),p'为 m'x(M的化合价)/(X的化合价)。 这种类型的组合物可以通过加热转变成液体并喷射热液体并进行喷雾冷却。 喷涂材料具有有用的颗粒形式,并且可以用作聚合不饱和单体如乙烯的聚合催化剂的组分。

    Catalyst component
    3.
    发明授权
    Catalyst component 失效
    催化剂组分

    公开(公告)号:US4325835A

    公开(公告)日:1982-04-20

    申请号:US164932

    申请日:1980-07-01

    IPC分类号: C08F4/62 C08F10/00 C08F4/64

    CPC分类号: C08F10/00

    摘要: A component for an olefin polymerization catalyst which is the product of treating a particulate support material with (a) an organo-magnesium compound, (b) an aluminium compound e.g. ethyl aluminium dichloride, (c) an organometallic compound of general formula R.sub.m MX.sub.p wherein M is a metal of Groups IA, IIA, IIB, IIIB, VA or VIA of the Periodic Table, R is a hydrocarbyl or substituted hydrocarbyl group, X is a singly charged anionic ligand or a monodentate neutral ligand, m is an integer up to the highest valency of the metal M and p is 0 or an integer up to 2 less than the valency of the metal M, e.g. zirconium tetrabenzyl, and (d) at least one transition metal compound of Groups IVA, VA or VIA, e.g. titanium tetrachloride. The catalyst component can be used to effect copolymerization of ethylene with an alpha-olefin monomer such as butene-1 in a fluidized bed reactor.

    摘要翻译: 用于烯烃聚合催化剂的组分,其是用(a)有机镁化合物处理颗粒载体材料的产物,(b)铝化合物,例如, 乙基二氯化铝,(c)通式RmMXp的有机金属化合物,其中M是元素周期表中IA,IIA,IIB,IIIB,VA或VIA族的金属,R是烃基或取代的烃基,X是单 带电的阴离子配体或单齿中性配体,m是金属M的最高化合价的整数,p是0或比金属M的化合价低2的整数,例如 四苄基锆,和(d)IVA,VA或VIA族的至少一种过渡金属化合物,例如。 四氯化钛。 催化剂组分可用于在流化床反应器中进行乙烯与α-烯烃单体如丁烯-1的共聚。

    Process for the purification of zirconium compounds
    4.
    发明授权
    Process for the purification of zirconium compounds 失效
    锆化合物纯化方法

    公开(公告)号:US4822575A

    公开(公告)日:1989-04-18

    申请号:US10190

    申请日:1987-01-02

    IPC分类号: C01G25/00 C01G25/02 C01G25/06

    摘要: The invention concerns processes for the preparation of zirconium compositions which on calcination form zirconia. The zirconium compositions are prepared by the addition of an ammonia source to an aqueous zirconium sulfate solution to give a solution pH in the range of from 0.1 to 2.5 and preferably 1.0 to 2.0. The zirconium composition precipitated from solution appears crystalline, is readily collected by filtration and has low levels of metallic impurities. Therefore, the process of the invention may be used to advantage in the purification zirconium compounds.The invention also includes the zirconium compositions and processes for the purification of zirconium compounds including zirconia.

    摘要翻译: PCT No.PCT / AU86 / 00109 Sec。 371日期1987年1月2日 102(e)日期1987年1月2日PCT提交1986年4月22日PCT公布。 出版物WO86 / 06362 日期1986年11月6日。本发明涉及在煅烧形成氧化锆时制备锆组合物的方法。 通过向硫酸锆水溶液中加入氨源制备锆组合物,得到溶液pH范围为0.1至2.5,优选1.0至2.0。 从溶液中沉淀的锆组合物看起来是结晶的,通过过滤容易收集并且具有低水平的金属杂质。 因此,本发明的方法可用于纯化锆化合物。 本发明还包括锆组合物和用于纯化包括氧化锆的锆化合物的方法。

    Transition metal composition, production and use
    5.
    发明授权
    Transition metal composition, production and use 失效
    过渡金属组成,生产和使用

    公开(公告)号:US4388220A

    公开(公告)日:1983-06-14

    申请号:US282954

    申请日:1981-07-13

    IPC分类号: C08F4/62 C08F10/00 C08F4/64

    CPC分类号: C08F10/00

    摘要: A transition metal composition is obtained by treating at least one particulate support material with at least one organomagnesium compound, at least one cleavage agent and at least one transition metal compound of Groups IVA, VA or VIA of the Periodic Table. The support material is typically a metal oxide, such as alumina or silica. The orgaomagnesium compound is typically a dialkyl magnesium compound such as dibutyl magnesium. The cleavage agent may be an amine, a thioalcohol, an ester, a carboxylic acid or particularly an alcohol such as n-butanol. The transition metal compound is added after the organomagnesium compound and the cleavage agent and is typically titanium tetrachloride. The product may be used as a catalyst component to polymerise an olefine monomer such as ethylene.

    摘要翻译: 通过用至少一种有机镁化合物,至少一种裂解剂和至少一种元素周期表IVA,VA或VIA族过渡金属化合物处理至少一种颗粒状载体材料来获得过渡金属组合物。 载体材料通常是金属氧化物,例如氧化铝或二氧化硅。 所述镁化合物通常为二烷基镁化合物,例如二丁基镁。 裂解剂可以是胺,硫醇,酯,羧酸或特别是如正丁醇的醇。 在有机镁化合物和裂解剂之后加入过渡金属化合物,通常为四氯化钛。 该产物可以用作催化剂组分以聚合烯烃单体如乙烯。

    Catalyst component
    6.
    发明授权
    Catalyst component 失效
    催化剂组分

    公开(公告)号:US4324691A

    公开(公告)日:1982-04-13

    申请号:US164928

    申请日:1980-07-01

    IPC分类号: C08F4/62 C08F10/00 C08F4/64

    CPC分类号: C08F10/00

    摘要: A component for an olefin polymerisation catalyst which component is the product of treating a particulate support material with (a) an organomagnesium compound, (b) a transition metal compound of Groups IVA, VA or VIA, e.g. bis-butoxy titanium dichloride, (c) a pacifying agent, e.g. HCl and (d) optionally an aluminium compound, e.g. ethyl aluminium dichloride, an organometallic compound, e.g. zirconium tetrabenzyl, a halogenating agent e.g. silicon tetrachloride, or a Lewis Base compound, e.g. ethyl benzoate.

    摘要翻译: 用于烯烃聚合催化剂的组分,该组分是用(a)有机镁化合物处理颗粒载体材料的产物,(b)IVA族,VA族或VIA族的过渡金属化合物,例如。 二氯化二丁氧基钛,(c)安抚剂,例如, HCl和(d)任选的铝化合物,例如 乙基二氯化铝,有机金属化合物,例如。 四苄基锆,卤化剂如 四氯化硅或路易斯碱化合物,例如 苯甲酸乙酯。