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21. 发明专利

JPH02255808A POLYMERIZATION OF ALPHA-OLEFIN 失效
公开(公告)号：JPH02255808A
公开(公告)日：1990-10-16
申请号：JP3499789
申请日：1989-02-16
申请人： MITSUI TOATSU CHEMICALS
发明人： IWATANI TSUTOMU , SUGIMOTO RYUICHI , ASANUMA TADASHI
IPC分类号： C08F4/658 , C08F4/60 , C08F10/00
摘要： PURPOSE:To obtain a highly stereoregular polymer in good efficiency by polymerizing an alpha-olefin in the presence of a catalyst comprising a transition metal catalyst prepared from a magnesium halide, a phthalic diester, a Ti compound, etc., by a specified method and an organoaluminum compound. CONSTITUTION:A magnesium halide (e.g. magnesium chloride), a phthalic diester (e.g. dibutyl phthalate) and a tetravalent titanium compound having at least one halogen atom (e.g. titanium tetrachloride) are ground together and heat- treated in the presence of a hydrocarbon compound (e.g. toluene) or a halohydrocarbon compound (e.g. methyl chloride) to produce a transition metal catalyst. An alpha-olefin (e.g. proylene) is polymerized in the presence of a catalyst comprising the obtained transition metal catalyst and an organoaluminum compound (e.g. triethylaluminum) to produce a polymer.

22. 发明专利

JPH02240111A METHOD FOR CONTINUOUSLY CHANGING GRADE OF POLYPROPYLENE 失效
公开(公告)号：JPH02240111A
公开(公告)日：1990-09-25
申请号：JP6069689
申请日：1989-03-15
申请人： MITSUI TOATSU CHEMICALS
发明人： ASANUMA TADASHI , IWATANI TSUTOMU , KIMURA SHIGERU
IPC分类号： C08F4/64 , C08F2/00 , C08F4/658 , C08F10/06
摘要： PURPOSE:To change the grade of polypropylene efficiently while effectively utilizing the capacity of a polymerization tank by polymerizing propylene with the aid of a specified catalyst by continuously changing the grade by controlling the amount of the catalyst fed and the hydrogen concentration. CONSTITUTION:A magnesium halide (i), a phthalic diester (ii) and a tetravalent titanium compound (iii) having at least one halogen atom are ground together and heated in the presence of a (halo)hydrocarbon (iv) to obtain a transition metal catalyst (a) comprising component (iii) supported by component (i). Component (a) is mixed with an organoaluminum compound (b) to obtain a catalyst. Propylene is continuously polymerized in bulk in the presence of this catalyst in liquid propylene as a solvent in a polymerizer consisting of at least two connected polymerization tanks by increasing the hydrogen feed in order of sequence of the tanks in such a way that when the grade is changed to a lower-MW one, the amount of component (a) to be fed is decreased while the hydrogen concentration is increased according to the amount of residual component (a) until it is decreased to the desired value and the hydrogen concentration in each of the second and subsequent polymerization tanks is then changed to the desired value and that when the grade is changed to a higher-MW one, the conditions are changed in reversed directions.

23. 发明专利

JPH01158005A METHOD FOR POLYMERIZING OLEFIN 失效
公开(公告)号：JPH01158005A
公开(公告)日：1989-06-21
申请号：JP31602287
申请日：1987-12-16
申请人： MITSUI TOATSU CHEMICALS
发明人： SUGIMOTO RYUICHI , IWATANI TSUTOMU , ASANUMA TADASHI
IPC分类号： C08F4/60 , C08F4/654 , C08F10/00
摘要： PURPOSE:To obtain a polyolefin in good yield, by using a transition metallic catalyst prepared by supporting a titanium halide on a magnesium halide obtained by a specific method as a carrier and catalyst consisting of an organometallic compound of groups I-III of the periodic table. CONSTITUTION:An olefin (e.g., ethylene or propylene) is polymerized using a transition metallic catalyst prepared by supporting a titanium halide on a compound expressed by the formula MgX X Cl2-y-m (X is Br or I; X is Cl; land m are not 0 and numbers of is Br; X is I; k is 0-2) in a liquid state and a catalyst consisting of an organometallic compound (e.g., organoaluminum) of group I-III of the periodic table.

24. 发明专利

JPS62215614A PRODUCTION OF ETHYLENE/ALPHA-OLEFIN COPOLYMER 失效
公开(公告)号：JPS62215614A
公开(公告)日：1987-09-22
申请号：JP5706786
申请日：1986-03-17
申请人： MITSUI TOATSU CHEMICALS
发明人： KUJIRA TOSHIO , IWATANI TSUTOMU , SASAKI KENSEI , ITO AKIRA
IPC分类号： C08F210/16 , C08F4/60 , C08F4/64 , C08F4/658 , C08F210/00
摘要： PURPOSE:To obtain the titled copolymer in good randomization and efficiently, the using a catalytic system consisting of a titanium component activated by a specific method and an organoaluminum compound. CONSTITUTION:Ethylene is copolymerized with an alpha-olefin (and polyene) under a preferable condition at 10-100 deg.C at normal pressure -100kg/cm in the presence of a catalytic system consisting of (A) activated titanium obtained by subjecting (i) a solid comprising Mg, Ti an a halogen as components and (ii) an organomagnesium compound (e.g., ethylbutylmagnesium, etc.) to contact reaction and (B) an organoaluminum compound (e.g. triethylaluminum, etc.). In the activated titanium A, the amount of the component ii is preferably >=0.5mol (based on 1mol atom Ti) and the amount of the compound B is preferably 1-100mol based on 1mol Ti of the activated titanium.

25. 发明专利

JPH07179687A POLYPROPYLENE RESIN COMPOSITION 失效
公开(公告)号：JPH07179687A
公开(公告)日：1995-07-18
申请号：JP32374493
申请日：1993-12-22
申请人： MITSUI TOATSU CHEMICALS
发明人： SUGIMOTO RYUICHI , FUJIKAGE ICHIRO , IWATANI TSUTOMU
IPC分类号： C08L23/10 , C08L23/00
摘要： PURPOSE:To improve the balance between the rigidity and the impact strength by using a crystalline PP and a specified copolymer as the constituents. CONSTITUTION:100 pts.wt. crystalline PP is mixed with 1-30 pts.wt. copolymer of propylene and an alpha-omega diene having terminal vinyl groups, which has a content of alpha-omega diene units of 0.0001-5mol%, a molar ratio of the vinyl groups to the a-w diene units (M/M0) of at most 0.9:1, and a content of boiling p-xylene insoluble matter of at most 1wt.% and wherein the ratio of the weight-average molecular weight (Mw) to the number-average molecular weight (Mu) is at least 7:1 in the high-molecular weight region and the value obtained by dividing the ratio in the high-molecular weight region by that in the low-molecular weight region is at least 2 when the area below the molecular weight distribution curve, determined by the gel permeation chromatography, with the elution amount as the ordinate and the natural logarithm of molecular weight as the abscissa is divided into high-, low-and medium-molecular weight regions centered at the peak positions of the curve and the distribution in each region is assumed to be a Gaussian distribution.

26. 发明专利

JPH07165814A PROPYLENE COPOLYMER AND ITS PRODUCTION 失效
公开(公告)号：JPH07165814A
公开(公告)日：1995-06-27
申请号：JP31310693
申请日：1993-12-14
申请人： MITSUI TOATSU CHEMICALS
发明人： SUGIMOTO RYUICHI , IWATANI TSUTOMU , TAKEUCHI KATSUMI
IPC分类号： C08F4/68 , C08F4/60 , C08F4/6392 , C08F8/00 , C08F210/06
摘要： PURPOSE:To improve the balance between the rigidity and impact resistance of a molding by using a specified crystalline propylene copolymer obtained by copolymerizing propylene and an alpha-omega diene. CONSTITUTION:A crystalline propylene polymer is made from propylene and an alpha-omega diene having terminal vinyl groups and has a content of alpha-omega diene units of 0.0001-5mol%, a molar ratio of the vinyl groups to the alpha-omega diene units (M/M0) of 0.9, a content of boiling p-xylene insolubles of 1wt.%, and an intrinsic viscosity of 0.1-10dl/g (135 deg.C, in tetralin solution). The ratio of the weight- average molecular weight to the number-average molecular weight is at least 7:1 in the high-molecular weight region and the value obtained by dividing the ratio in the high-molecular weight region by that in the low-molecular weight region is at least 2 when the molecular weights are classified into three regions, i.e., high-, medium- and low-molecular weight regions based on the molecular weight distribution curve determined by gel permeation chromatography, and the pentad fraction of the propylene chain part is at least 90%.

27. 发明专利

JPH06220115A PRODUCTION OF POLYOLEFIN 失效
公开(公告)号：JPH06220115A
公开(公告)日：1994-08-09
申请号：JP21491491
申请日：1991-08-27
申请人： MITSUI TOATSU CHEMICALS
发明人： SUGIMOTO RYUICHI , ASANUMA TADASHI , IWATANI TSUTOMU , TAKEUCHI KATSUMI
IPC分类号： C08F4/649 , C08F4/60 , C08F4/642 , C08F4/6592 , C08F10/00
摘要： PURPOSE:To produce the subject polymer in high productivity by using an inexpensive and highly active catalyst containing a transition metal compound having a cyclopentadiene compound as a ligand, an organometallic compound and a compound forming an ionic compound by reacting with the transition metal compound. CONSTITUTION:An olefin is polymerized by using a catalyst composed of (a) a transition metal compound of formula I (A and B are unsaturated hydrocarbon residues coordinated to center atom; X is 1-12C hydrocarbon residue; M is titanium atom, zirconium atom or hafnium atom) or formula II (A' and B' are same as A and B; R is bivalent hydrocarbon residue which may be substituted with germanium atom or tin atom) [e.g. isopropylcyclopentadienyl-1- fluorenyl) zirconium dichloride], (b) an organometallic compound (e.g. triethylaluminum) and (c) a compound capable of forming an ionic compound by reacting with the transition metal compound [e.g. triphenylmethane tetra(pentafluorophenyl)boron] and adding a third component to the polymerization system in two or more divided stages.

28. 发明专利

JPH05170823A PRODUCTION OF SYNDIOTACTIC POLY-ALPHA-OLEFIN 失效
公开(公告)号：JPH05170823A
公开(公告)日：1993-07-09
申请号：JP34465291
申请日：1991-12-26
申请人： MITSUI TOATSU CHEMICALS
发明人： SUGIMOTO RYUICHI , UCHIDA OSAMU , IWATANI TSUTOMU , TAKEUCHI KATSUMI
IPC分类号： C08F4/655 , C08F4/60 , C08F4/659 , C08F4/6592 , C08F10/00
摘要： PURPOSE:To obtain a syndiotactic poly-alpha-olefin of a high bulk density in high activity per catalyst. CONSTITUTION:The title process comprises bringing a catalyst comprising a solid catalyst component which is prepared by impregnating an inorganic oxide containing surface hydroxyl groups with a transition metal compound containing asymmetrical ligands and from which at most 5wt.%, based on the transition metal component infiltrated into the solid catalyst component, transition metal component leaches when it is reacted with an organoaluminum compound in a toluene solution into contact with an alpha-olefin at 40 deg.C or below, and feeding the product of contact to the polymerization zone to polymerize an alpha-olefin.

29. 发明专利

JPH047306A PREPARATION OF SYNDIOTACTIC POLY-ALPHA-OLEFIN 失效
公开(公告)号：JPH047306A
公开(公告)日：1992-01-10
申请号：JP10658090
申请日：1990-04-24
申请人： MITSUI TOATSU CHEMICALS
发明人： ASANUMA TADASHI , SUGIMOTO RYUICHI , IWATANI TSUTOMU , UCHIDA OSAMU , TAKEUCHI KATSUMI
IPC分类号： C08F10/00 , C08F4/60 , C08F4/618 , C08F4/6192 , C08F8/00
摘要： PURPOSE:To improve the yield per unit wt. of catalyst, particle size, and bulk density of a resulting polymer by polymerizing an alpha-olefin in the presence of a specific catalyst. CONSTITUTION:One mol of a transition metal compd. having an asymmetric ligand and pref. comprising a compd. of formula I (wherein A and B are each an arom. hydrocarbon group; R is a 1-20C hydrocarbon residue or an Si compd. connecting A to B; X is halogen or a 1-20C hydrocarbon residue; and M is Ti, Zr, or Hf) and 1-1000000mol of an aluminoxane comprising a compd. of formula II or III (wherein R is a 1-3C hydrocarbon residue) are deposited on an inorg. oxide having hollows in its inside, thus giving a catalyst component is compound with an organoaluminum compd. (e.g. triethylaluminum) to give a catalyst. In the presence of the catalyst, an alpha-olefin is polymerized under normal to 100kg/cm pressure at -100 to 200 deg.C.

30. 发明专利

JPH03200814A HEXENE-1 COPOLYMER 失效
公开(公告)号：JPH03200814A
公开(公告)日：1991-09-02
申请号：JP33820489
申请日：1989-12-28
申请人： MITSUI TOATSU CHEMICALS
发明人： ASANUMA TADASHI , SHIOMURA TETSUNOSUKE , SASAKI KENSEI , IWATANI TSUTOMU , UCHIKAWA SHINRYU
IPC分类号： C08F210/14 , C08F10/14 , C08F210/16
摘要： PURPOSE:To obtain a hexene-1 copolymer having possibilities of providing unique properties by copolymerizing hexene-1 with another alpha-olefin in the presence of a specified highly pure catalyst. CONSTITUTION:A hexene-1 copolymer, wherein the intensity of the absorption of the methylene groups in the side chains directly bonded to the main chain comprising hexene-1 units observed at about 34.4ppm with reference to tetramethylsilane is at least 0.3 time larger than the total of the intensities of the absorptions of the methylene groups in the side chains directly bonded to the main chain in a C-NMR spectrum measured in a 1,2,4-trichlorobenzene solution, the hexene-1 content is 50-99.9wt.%, and the intrinsic viscosity as measured in a tetralin solution at 135 deg.C is 0.05 or more. An example of the catalyst system suitable for the production of this copolymer is a combination of a transition metal catalyst such as isopropyl(cyclopentadienyl-1-fluorenyl) zirconium dichloride with methylaluminoxane of a degree of polymerization of 10 or more.

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