-
公开(公告)号：US4904743A
公开(公告)日：1990-02-27
申请号：US235001
申请日：1988-08-22
CPC分类号： C08F8/22
摘要： A modified olefinic polymer is obtained by fluorinating an ethylene/.alpha.-olefin copolymer having the following properties (i) to (iv), said ethylene/.alpha.-olefin copolymer being prepared by copolymerizing ethylene and an .alpha.-olefin having 3 to 12 carbon atoms in the presence of a catalyst comprising a solid catalyst component and an organoaluminum compound, said solid catalyst component containing at least magnesium and titanium:(i) Melt index: 0.01-100 g/10 min(ii) Density: 0.860-0.910 g.cm.sup.3(iii) Maximum peak temperature (Tm) as measured according to a differential scanning calorimetry (DSC) should be not lower than 100.degree. C.(iv) Insolubles in boiling n-hexane should be not less than 10% by weight.
-
公开(公告)号：US4900790A
公开(公告)日：1990-02-13
申请号：US340446
申请日：1989-04-19
CPC分类号： C08L23/06 , C08L23/04 , C08L23/0815 , C08L51/06
摘要： A polyethylene resin composition comprising (A) 50-99.9 parts by weight of an ethylene polymer and (B) 0.1-50 parts by weight of a modified ethylene polymer obtained by fluorinating an ethylene polymer having a density in the range of larger than 0.910 g/cm.sup.3 and 0.970 g/cm.sup.3 ; said ethylene polymer being prepared by polymerizing ethylene in the presence of a catalyst comprising a catalyst component containing at least one member selected from the group consisting of a titanium compound, vanadium compound and chromium compound, and optionally an organoaluminum compound.
-
公开(公告)号：US4923935A
公开(公告)日：1990-05-08
申请号：US302564
申请日：1989-01-26
摘要： A process for producing polyethylene of ultrahigh molecular weight having an intrinsic viscosity of 10-30 dl/g at 135.degree. C. in decalin is disclosed which comprises at least the following two stages of polymerization reaction: (a) a first reaction stage where in ethylene is polymerized with use of a catalyst comprising a solid component containing at least Mg, Ti and/or Va and in the absence or presence of hydrogen of reduced concentration to produce 70-99.5 weight parts of polyethylene having an intrinsic viscosity of 12-32 dl/g at 135.degree. C. in decalin; and (b) a second reaction stage wherein a fresh feed of ethylene is polymerized in the presence of hydrogen of higher concentration to produce 30-0.5 weight parts of polyethylene having an intrinsic viscosity of 0.1-5 dl/g at 135.degree. C. in decalin.
摘要翻译： 公开了在135℃下在十氢萘中生产特性粘度为10-30dl / g的超高分子量聚乙烯的方法，其至少包括以下两个阶段的聚合反应：（a）第一反应阶段，其中在 使用包含至少含有Mg，Ti和/或Va的固体组分的催化剂和在还原浓度不存在或不存在的情况下使乙烯聚合，得到70-99.5重量份的特性粘度为12-32的聚乙烯 dl / g，135℃，十氢化萘; 和（b）第二反应阶段，其中乙烯的新鲜进料在较高浓度的氢气存在下聚合，以在135℃下产生特性粘度为0.1-5dl / g的30至0.5重量份的聚乙烯 十氢化萘
-
公开(公告)号：US4849390A
公开(公告)日：1989-07-18
申请号：US38949
申请日：1987-04-16
申请人： Akira Sano , Kunimichi Kubo , Kazuo Matsuura
发明人： Akira Sano , Kunimichi Kubo , Kazuo Matsuura
CPC分类号： C08F4/025 , Y10S526/901 , Y10S526/909
摘要： A catalyst for polymerization of olefins is disclosed which comprises a titanium and/or vanadium compound supported on a silicon and/or aluminum oxide carrier. This carrier has peculiar characteristics including a specified proportion of highly spherical oxide particles, a selected average pore size and a specified proportion of a selected particle size range before and after ultrasonic treatment, whereby there is obtained a catalyst having increased bulk density, narrow particle size distribution and high fluidity.
-
公开(公告)号：US4767819A
公开(公告)日：1988-08-30
申请号：US70545
申请日：1987-07-07
申请人： Shigeki Yokoyama , Michiaki Torii , Kazuo Matsuura , Akira Sano
发明人： Shigeki Yokoyama , Michiaki Torii , Kazuo Matsuura , Akira Sano
CPC分类号： D01D1/02 , C08J3/092 , C10G67/06 , D01F6/04 , C08J2323/06
摘要： The present invention provides an ultra-high-molecular-weight polyethylene solution which is produced by the steps of subjecting a kerosene fraction having a boiling point of 160.degree. to 300.degree. C. to a nucleus hydrogenation treatment at a pressure of 30 to 100 kg/cm.sup.2 at a temperature of 100.degree. to 300.degree. C. in the presence of a metallic catalyst for nucleus hydrogenation of aromatic nuclei; separating and removing at least a part of n-paraffins present in the kerosene therefrom by the use of a molecular sieve made up of a synthesized zeolite in order to obtain a residual oil; fractionating the latter by a rectification apparatus to obtain a hydrocarbon mixture fraction which has a boiling point of 180.degree. to 250.degree. C. and which is substantially free from naphthalene and biphenyl; and dissolving, in the hydrocarbon mixture fraction, an ultra-high-molecular-weight polyethylene having an intrinsic viscosity of 8 or more in decalin at 135.degree. C.
摘要翻译： 本发明提供了一种超高分子量聚乙烯溶液，其通过以下步骤制备：使沸点为160〜300℃的煤油馏分在30〜100kg的压力下进行核氢化处理 在金属催化剂存在下，在100〜300℃的温度下，芳族核的核氢化; 通过使用由合成沸石构成的分子筛分离和除去存在于煤油中的至少一部分正链烷烃，以获得残油; 通过精馏装置对后者进行分馏，得到沸点为180-250℃，基本上不含萘和联苯的烃混合物馏分; 并在烃混合物馏分中，在135℃下在十氢化萘中溶解特性粘度为8以上的超高分子量聚乙烯。
-
公开(公告)号：US6077804A
公开(公告)日：2000-06-20
申请号：US858120
申请日：1997-05-19
申请人： Yoshio Tajima , Naoki Kataoka , Akira Sano , Kazuo Matsuura
发明人： Yoshio Tajima , Naoki Kataoka , Akira Sano , Kazuo Matsuura
CPC分类号： C08F10/00 , C08F4/65904 , C08F4/65912 , C08F4/65916 , C08F4/6592
摘要： According to the present invention, there are provided a catalyst and a process for the preparation of polyolefins having a relatively wide molecular weight distribution, good particle properties, a narrow composition distribution in copolymerization and a high molecular weight and being less sticky. The catalyst is prepared by contacting the following constituents (1) to (4) with one another:(1) a compound represented by the general formula Me.sup.1 R.sup.1.sub.p (OR.sup.2).sub.q X.sub.4-p-q, where Me.sup.1 is Zr, Ti or Hf, R.sup.1 and R.sup.2 are each independently a hydrocarbon group having 1 to 24 carbon atoms, X is a halogen atom, p and q are each an integer in the ranges of 0.ltoreq.p.ltoreq.4 and 0.ltoreq.q.ltoreq.4 , provided 0.ltoreq.p+q.ltoreq.4;(2) a compound represented by the general formula Me.sup.2 R.sup.3.sub.m (OR.sup.4).sub.n X.sup.2.sub.z-m-n, where Me.sup.2 is a Group I-III element in the Periodic Table, R.sup.3 and R.sup.4 are each independently a hydrocarbon group having 1 to 24 carbon atoms, X.sup.2 is a halogen atom or a hydrogen atom, provided when X.sup.2 is a hydrogen atom, Me.sup.2 is a Group III element in the Periodic Table, z is the valence of Me.sup.2, m and n are each an integer in the ranges of 0.ltoreq.m.ltoreq.z, and 0.ltoreq.n.ltoreq.z, provided 0.ltoreq.m+n.ltoreq.z;(3) an organocyclic compound having conjugated double bonds; and(4) a modified organoaluminum compound containing Al--O--Al bond, and thereafter contacting the resulting contact reaction product with the following component (5):(5) an inorganic carrier and/or a particulate polymer carrier.
摘要翻译： 根据本发明，提供了一种催化剂和制备具有较宽分子量分布，良好的颗粒性能，窄的共聚合成分布和高分子量且不易粘的聚烯烃的方法。 通过使下述成分（1）〜（4）彼此接触来制备催化剂：（1）由通式Me1R1p（OR2）qX4-pq表示的化合物，其中Me1为Zr，Ti或Hf，R1和R2 各自独立地为具有1〜24个碳原子的烃基，X为卤素原子，p和q各自为0≤p≤4且0≤q≤4的整数， 提供0
-
公开(公告)号：US5804679A
公开(公告)日：1998-09-08
申请号：US881936
申请日：1997-06-25
申请人： Akira Sano , Takeichi Shiraishi , Kunihiro Suzuki , Mitsuo Okamoto , Katumi Usui , Hiroyuki Shimizu , Kazuo Matsuura
发明人： Akira Sano , Takeichi Shiraishi , Kunihiro Suzuki , Mitsuo Okamoto , Katumi Usui , Hiroyuki Shimizu , Kazuo Matsuura
CPC分类号： C08F10/00 , Y10S526/901
摘要： Polyolefins exhibiting better particle properties are prepared by polymerizing an olefin or olefins in the presence of a catalyst comprising a solid catalyst component being prepared by the reaction of the following components �I! and �II!: �I! a reaction product obtained by reacting the following components (1), (2) and (3) with one another: (1) a silicon oxide and/or an aluminum oxide; (2) a reaction product obtained by the reaction of a magnesium halide and compound represented by the general formula Me(OR).sub.n X.sub.z-n wherein Me represents an element of Groups I to IV in the Periodic Table, z represents the valence of the element Me, n is 0
摘要翻译： 表现出更好的颗粒性能的聚烯烃通过在包含通过以下组分[I]和[II]的反应制备的固体催化剂组分的催化剂存在下聚合烯烃或烯烃来制备：[I] 以下组分（1），（2）和（3）彼此：（1）氧化硅和/或氧化铝; （2）通过卤化镁与通式Me（OR）n X z-n表示的化合物反应获得的反应产物，其中Me表示周期表中第I至IV族的元素，z表示元素的化合价 Me，n为0
-
公开(公告)号：US5541271A
公开(公告)日：1996-07-30
申请号：US380149
申请日：1995-01-30
申请人： Akira Sano , Shiraishi Takeichi , Kunihiro Suzuki , Mitsuo Okamoto , Katsumi Usui , Hiroyuki Shimizu , Kazuo Matsuura
发明人： Akira Sano , Shiraishi Takeichi , Kunihiro Suzuki , Mitsuo Okamoto , Katsumi Usui , Hiroyuki Shimizu , Kazuo Matsuura
CPC分类号： C08F10/00 , Y10S526/901
摘要： A polyolefin having superior particle properties such as an extremely high bulk density, a large average particle diameter and a narrow particle size distribution, and having a narrow molecular weight distribution, is obtained in high yield, by polymerizing an olefin, using a catalyst comprising a solid catalyst component and an organometallic compound, the solid catalyst component being obtained by reacting a) a silicon oxide and/or an aluminum oxide, the reaction product of an organomagnesium compound and a compound of the general formula Me(OR).sub.n X.sub.Z-n, and a titanium compound, in the presence of ROH, and further reacting the resulting reaction product with a compound of the general formula AlR.sub.q X.sub.3-q.
摘要翻译： 通过聚合烯烃，可以高收率地获得具有优异的颗粒性能如聚合密度高，平均粒径大，粒度分布窄，分子量分布狭窄的聚烯烃， 固体催化剂组分和有机金属化合物，所述固体催化剂组分通过使a）氧化硅和/或氧化铝，有机镁化合物与通式Me（OR）n XZ-n的化合物的反应产物， 和钛化合物，在ROH存在下进一步使所得反应产物与通式AlRqX 3-q的化合物反应。
-
公开(公告)号：US5506183A
公开(公告)日：1996-04-09
申请号：US287710
申请日：1994-08-09
CPC分类号： C08F10/00
摘要： Polyolefins having better particle properties are obtained by polymerizing olefins in the presence of a catalyst comprising a solid catalyst component and an organometallic compound, the said solid catalyst component being prepared by reacting the following components [I] and [II] and further reacting the resulting reaction product with the following component [III]:[I] a reaction product obtained by reacting:(1) a silicon oxide and/or an aluminum oxide, and(2) a titanium compound, or a titanium compound and a vanadium compound, and further reacting the resulting reaction product with:(3) an organoaluminum compound;[II] a reaction product obtained by the reaction of:(1) a magnesium halide, and(2) a compound represented by the general formula Me(OR).sub.n X.sub.z-n wherein Me represents an element of Groups I to IV in the Periodic Table, z represents the valence of the element Me, n is 0
摘要翻译： 具有更好颗粒性能的聚烯烃通过在包含固体催化剂组分和有机金属化合物的催化剂存在下聚合烯烃获得，所述固体催化剂组分通过使以下组分[I]和[II]反应制备，并进一步使所得 反应产物与以下组分[III]反应：[I]通过使（1）氧化硅和/或氧化铝反应获得的反应产物，和（2）钛化合物或钛化合物和钒化合物， 并进一步使所得反应产物与以下物质反应：（3）有机铝化合物; [II]通过以下反应获得的反应产物：（1）卤化镁和（2）由通式Me（OR）n Xz-n表示的化合物，其中Me表示周期表中第I至IV族的元素 表中，z表示元素Me的化合价，n为0
-
公开(公告)号：US5432236A
公开(公告)日：1995-07-11
申请号：US198909
申请日：1994-02-18
申请人： Akira Sano , Kunimichi Kubo , Kazuo Matsuura
发明人： Akira Sano , Kunimichi Kubo , Kazuo Matsuura
CPC分类号： C08F10/00 , Y10S526/901 , Y10S526/908
摘要： According to the present invention, in a vapor phase polymerization of olefins, there is provided an efficient polyolefin manufacturing process capable of preventing the formation of a sheet-like polymer and allowing an olefin polymerization reaction to be started stably. More particularly, there is provided a process of preparing a polyolefin by homopolymerizing or copolymerizing an olefin or olefins substantially in a vapor phase condition and in the presence of a catalyst comprising a solid catalyst component and an organometallic compound, the solid catalyst component containing magnesium, one or more elements selected from titanium and vanadium and also containing halogen, wherein, in feeding the catalyst into a reactor the interior of which is held substantially in a vapor phase condition, in the presence of a polyolefin serving as a medium for dispersing the catalyst and in a state not substantially inducing a polymerization reaction in the presence of only the said polyolefin serving as the said medium, to start homopolymerization or copolymerization of the olefin(s), a solid catalyst component satisfying the above condition and having an average particle diameter substantially larger than that of the solid catalyst component to be used in a principal stage of the polymerization reaction is used at least until an olefin homopolymer or copolymer is formed in an amount equal to the amount of the polyolefin used as the catalyst dispersing medium.
摘要翻译： 根据本发明，在烯烃的气相聚合中，提供了能够防止形成片状聚合物并使烯烃聚合反应稳定地开始的有效的聚烯烃制造方法。 更具体地，提供了通过基本上在气相条件下和在包含固体催化剂组分和有机金属化合物的催化剂存在下均匀聚合或共聚烯烃或烯烃来制备聚烯烃的方法，所述固体催化剂组分含有镁， 一种或多种选自钛和钒并且还含有卤素的元素，其中在将催化剂进料到其内部保持基本上处于气相条件的反应器中，在用作分散催化剂的介质的聚烯烃存在下 并且在仅作为所述介质的所述聚烯烃存在下基本上不引起聚合反应的状态下，开始使烯烃均聚或共聚，满足上述条件的固体催化剂组分具有平均粒径 明显大于将要用于固体催化剂组分的固体催化剂组分 至少直到烯烃均聚物或共聚物的形成量与用作催化剂分散介质的聚烯烃的量相同的量使用聚合反应的主要阶段。
-
-
-
-
-
-
-
-
-
搜索结果
187 条记录 (耗时 0.025 秒)
