摘要:
A catalyst for preparing an .alpha.-olefin polymer having a broad molecular weight distribution and excellent physical properties, which comprises a solid catalyst component (A) and an organometal compound (B), the solid catalyst component (A) being obtained by reduction with an organomagnesium solution of the thermal decomposition solid product of special titanium compounds.
摘要:
An intimately melted and homogenized polyethylene composition having excellent physical properties and moldability and comprising a high-medium density polyethylene having a high molecular weight (A), a high-medium density polyethylene having a low molecular weight (B) and a low density polyethylene (C) characterized in that:(i) the average molecular weight of (A) is 100,000-1,000,000, the average molecular weight of (B) is 1,000-100,000, the molecular weight ratio of (A) to (B) is 5-200, and (C) has an intrinsic viscosity [.eta.] of 0.70 dl/g or more in decalin at 135.degree. C. and an expansion factor of 3.3 or more, and(ii) the mixing ratio (A)/(B) is 30/70 to 80/20 and the mixing ratio of (C) in the composition is within the range from 1% by weight to less than 15% by weight.
摘要:
A polyethylene composition comprising a mixture of three kinds of polyethylenes (A), (B) and (C) characterized in that:(i) the viscosity average molecular weight of (A) is 1,000-100,000, the viscosity average molecular weight of (B) is 100,000-1,000,000, the viscosity average molecular weight of (C) is 400,000-6,000,000, the molecular weight ratio of (B) to (A), i.e. B/A, is 2-200 and the molecular weight ratio of (C) to (B), i.e. C/B, is 1.5 or more.(ii) the mixing ratio of (A) to (B) is 30/70 to 70/30 and the mixing ratio of (C) is 1-10% by weight based on the total composition, and(iii) the melt index of the composition is 0.001-1, and a process for producing said composition. This polyethylene composition is excellent in physical properties in that it has an appropriate die swell, a high melt tension and an excellent moldability and exhibits a high stiffness and a high ESCR.
摘要:
A process for polymerizing an .alpha.-olefin which comprises contacting the .alpha.-olefin at a temperature of about 10.degree. C. to about 100.degree. C. with a catalyst comprising a slurry component (A) and an organometallic component (B), the component (A) being obtained, without intermediate or final solids separation, by reacting (1) a slurry reaction mixture produced by reacting one mol of (i) a hydrocarbon-soluble organomagnesium component of the general formulaM.alpha.Mg.beta.R.sub.p.sup.1 R.sub.q.sup.2 X.sub.r Y.sub.sor of the reaction product of M.alpha.Mg.beta.R.sub.p.sup.1 R.sub.q.sup.2 X.sub.r Y.sub.s with at least one electron donor selected from the group consisting of ethers, thioethers, ketones, aldehydes, carboxylic acids or derivatives thereof, alcohols, thioalcohols and amines, with 0.1 to 10 mols of (ii) a chlorosilane compound of the formulaH.sub.a SiCl.sub.b R.sub.4-(a+b).sup.10at a temperature of about 20.degree. C. to about 150.degree. C., with (2) a titanium compound of the formulaTi(OR.sup.11).sub.n Z.sub.4-nand (3) a nitrogen- or sulfur-containing heterocyclic carboxylic acid ester or a hydrocarbyl carboxylic acid ester and the mol ratio of (2) the titanium compound/(3) the carboxylic acid ester being at least 0.3.
摘要翻译:一种聚合α-烯烃的方法,其包括在约10℃至约100℃的温度下与包含淤浆组分(A)和有机金属组分(B)的催化剂接触所述α-烯烃,所述组分 (A)通过使(1)通过使一摩尔(i)通式MαMgβR p 1 R q 2 X r Y的烃可溶性有机镁组分或反应生成的浆料反应混合物而获得,无中间或最终固体分离, 具有选自醚,硫醚,酮,醛,羧酸或其衍生物,醇,硫代醇和胺的至少一种电子给体的MαMgβRp1Rq2XrY的产物与0.1至10摩尔的(ⅱ)氯硅烷 在约20℃至约150℃的温度下,式(II)的化合物式为:H 1 Cl b R 4 - (a + b)10)与(2)式Ti(OR 11)n Z 4-n的钛化合物和(3) 含氮或含硫杂环羧酸 酸酯或烃基羧酸酯,(2)钛化合物/(3)羧酸酯的摩尔比至少为0.3。
摘要:
A novel process for polymerizing ethylene or a mixture of ethylene and another olefin is provided. In this process a novel catalyst having a very high activity per solid component of catalyst is used. Said catalyst is prepared by reacting a specific hydrocarbon-soluble organoaluminum-magnesium complex containing alkoxy, aryloxy, siloxy or siloxane groups, with one or more kinds of a titanium or vanadium compound having at least one halogen atom, and subsequently reacting the thus obtained hydrocarbon-insoluble reaction product (A) with a specified organoaluminum compound (B).
摘要:
A catalyst useful for polymerizing olefins which comprises a solid catalyst component [A] and an organometallic component [B], the solid catalyst component [A] being obtained by reacting (1) a solid inorganic oxide, (2) a hydrocarbon-soluble organomagnesium component of the general formulaM.sub..alpha. M.sub.g.beta. R.sub.p.sup.1 R.sub.q.sup.2 X.sub.r Y.sub.swherein.alpha., p, q, r and s each independently is 0 or a number greater than 0,.beta.is a number greater than 0,p+q+r+s=m.alpha.+2.beta.,m is the valence of M,M is a metal of the 1st to 3rd groups of the Periodic Table,R.sup.1 and R.sup.2 each independently is a hydrocarbon group having 1 to 20 carbon atoms,X and Y each independently is an OR.sup.3, OSiR.sup.4 R.sup.5 R.sup.6, NR.sup.7 R.sup.8 or SR.sup.9 group wherein R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 each independently is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms and R.sup.9 is a hydrocarbon group having 1 to 20 carbon atoms,or of the reaction product of M.sub..alpha. M.sub.g.beta. R.sub.p.sup.1 R.sub.q.sup.2 X.sub.r Y.sub.s with at least one electron donor selected from the group consisting of ethers, thioethers, ketones, aldehydes, carboxylic acids or derivatives thereof, alcohols, thioalcohols and amines and (3) a chlorosilane compound having a Si-H bond and of the formulaH.sub.a SiCl.sub.b R.sub.4-.sup.10 (a+b)whereinR.sup.10 is a hydrocarbon group having 1 to 20 carbon atoms,0 0 anda+b.ltoreq.4,separating a reaction product from the reaction mixture and washing the separated reaction product with an inert hydrocarbon and reacting the washed reaction product with (4) a titanium compound having at least one halogen atom and/or a vanadium compound having at least one halogen atom, and a polymerization process employing such a catalyst.
摘要翻译:一种用于聚合烯烃的催化剂,其包含固体催化剂组分[A]和有机金属组分[B],固体催化剂组分[A]是通过使(1)固体无机氧化物,(2)可溶于烃的有机镁 其中α,p,q,r和s各自独立地为0或大于0的数,β为大于0的数,p + q + r + s =mα+ 2β,m是M的化合价,M是元素周期表第1至第3族的金属,R 1和R 2各自独立地是具有1至20个碳原子的烃基,X和Y各自独立地是OR 3, OSiR 4 R 5 R 6,NR 7 R 8或SR 9基团,其中R 3,R 4,R 5,R 6,R 7和R 8各自独立地为氢原子或具有1至20个碳原子的烃基,R 9为具有1至20个碳原子的烃基, MαMgβRp1Rq2XrY与至少一种选自以下的电子给体的反应产物 醚,硫醚,酮,醛,羧酸或其衍生物,醇,硫代醇和胺,和(3)具有Si-H键和式IIaSiClbR4-10(a + b)的氯代硅烷化合物,其中R 10是烃 具有1至20个碳原子的烷基,0 0和a + b 4,将反应产物与反应混合物分离并用惰性烃洗涤分离的反应产物,并将洗涤的反应物 产物与(4)具有至少一个卤素原子的钛化合物和/或具有至少一个卤素原子的钒化合物,以及使用这种催化剂的聚合方法。
摘要:
Polyethylene or copolymers of ethylene with another .alpha.-olefin can be produced by the use of a novel polymerization catalyst obtained by using, in combination, (A) a specified, hydrocarbon-insoluble solid component prepared by reacting (i) a specific, hydrocarbon-soluble organoaluminum-magnesium complex (Al.sub.n Mg.sub.m R.sub.n(3.sub.-.sub..alpha.).sup.1 -R.sub.2m.sup.2 H.sub.n, wherein R.sup.1 and R.sup.2 are hydrocarbon radicals) with (ii) a titanium or vanadium compound containing halogen atom(s), and (B) an organoaluminum compound. This catalyst exhibits a surprisingly high activity per the unit amount of the solid component.
摘要:
A process for polymerizing ethylene or a mixture of ethylene and another olefin is proposed in which the polymerization can be carried out with an extremely high efficiency by using a catalyst prepared by reacting (A) a hydrocarbon-insoluble reaction product (obtained by reacting (i) a specified organomagnesium-containing hydrocarbon-soluble complex, or reaction product of (i), with (ii) a specified siloxane compound and with (iii) at least one kind of titanium or vanadium compound containing at least one halogen atom), with (B) a specified organoaluminum compound. Resultant polymers have a high molecular weight and a high rigidity and molecular weight and molecular weight distribution thereof can be easily controlled.
摘要:
Novel highly active catalysts useful for highly stereospecific polymerization of olefin which enables to produce polymer of good grain size having a high stereoregularity can be obtained by a combination of [A] a solid catalyst component obtained by reacting a specified organomagnesium component (i) with a specified chlorosilane compound containing Si--H (ii) to obtain a solid (1) and reacting said solid (1) with a titanium compound containing at least one halogen atom (2) and a carboxylic acid or a derivative thereof (3) and [B] a component consisting of an organometallic compound and a carboxylic acid or a derivative thereof.The organomagnesium component is of the formulaM.sub..alpha. Mg.sub..beta. R.sub.p.sup.1 R.sub.q.sup.2 X.sub.r Y.sub.swherein .alpha. is a number of 0 or greater than 0; .beta.> 0; p, q, r and s are each a number of 0 or greater; p+q+r+s=m.alpha.+2.beta. wherein m is the valency of M; M is a metal element of the 1st to the 3rd group of the Periodical Table; R.sup.1 and R.sup.2 are the same or different hydrocarbon radicals having 1 to 20 carbon atoms; X and Y are the same or different radicals selected from the group consisting of halogen, OR.sub.3, OSiR.sup.4 R.sup.5 R.sup.6, NR.sup.7 R.sup.8 and SR.sup.9 wherein R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are each hydrogen atom or a hydrocarbon radical having 1 to 20 carbon atoms and R.sup.9 is a hydrocarbon radical having 1 to 20 carbon atoms,And chlorosilane is of the formulaH.sub.a SiCl.sub.b R.sub.4-(a+b)wherein a and b are each a number greater than 0, having the relationship a.ltoreq.2 and a+b.ltoreq.4 wherein R is a hydrocarbon radical having 1 to 20 carbon atoms.
摘要:
A catalyst useful for polymerizing olefins, capable of providing an extremely high catalyst efficiency, excellent grain size and high bulk density of polymer; production of polymer having various molecular weight distributions from a broader range to a narrower range and controlling of die swell of formed polymer, by using a mechanical grinding and contacting means. Said catalyst shows a high activity and higher stereoregularity in the polymerization of polypropylene when it is used together with an electron donor compound.Said catalyst comprises a solid catalyst component (A) and an organometallic compound (B), said catalyst component (A) is obtained by reacting a specified organomagnesium component (i) with a specified chlorosilane compound (ii) and reacting and/or grinding-contacting the solid obtained by the reaction of (i) and (ii) with a titanium and/or vanadium compound containing at least one halogen atom.The organomagnesium component is of the formulaM.sub..alpha. Mg.sub..beta. R.sub.p.sup.1 R.sub.q.sup.2 X.sub.r Y.sub.swherein .alpha. is a number of 0 or greater than 0; .beta.>0; p, q, r and s are each a number of 0 or greater; p+q+r+s=m.alpha.+2.beta. wherein m is the valency of M; M is a metal element of the 1st to the 3rd group of the Periodical Table; R.sup.1 and R.sup.2 are the same or different hydrocarbon radicals having 1 to 20 carbon atoms; X and Y are the same or different radicals selected from the group consisting of halogen, OR.sup.3, OSiR.sup.4 R.sup.5 R.sup.6, NR.sup.7 R.sup.8 and SR.sup.9 wherein R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are each hydrogen atom or a hydrocarbon radical having 1 to 20 carbon atoms and R.sup.9 is a hydrocarbon radical having 1 to 20 carbon atoms, and chlorosilane is of the formulaH.sub.a SiCl.sub.b R.sub.4-(a+b)wherein a and b are each a number greater than 0, having the relationships a.ltoreq.2 and a+b.ltoreq.4 wherein R is a hydrocarbon radical having 1 to 20 carbon atoms.