公开(公告)号：KR840000256B1

公开(公告)日：1984-03-08

申请号：KR800002388

申请日：1980-06-18

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KIOKA MAMORU ,  KITANI HIROAKI ,  KASHIWA NORIO

IPC: C08F10/02 ,  C08F4/02 ,  C08F4/64

公开(公告)号：KR860001910B1

公开(公告)日：1986-10-24

申请号：KR830000577

申请日：1983-02-12

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KASHIWA NORIO ,  KIOKA MAMORU ,  USHITA YOSHIHISA

IPC: C08F4/00 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00 ,  C08F10/06

公开(公告)号：EP0303704A4

公开(公告)日：1989-06-14

申请号：EP88901647

申请日：1988-02-16

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KIOKA MAMORU ,  KASHIWA NORIO ,  KIMURA TOMOHIKO ,  TOMURA MITSUO ,  SOTOYAMA TOSHIKI

IPC: C08F4/64 ,  C08F10/00

CPC classification number: C08F10/00 ,  C08F4/6492 ,  C08F4/6465

Abstract: A process for polymerizing an alpha-olefin, which comprises conducting polymerization of the alpha-olefin using a catalyst formed by previously bringing a highly active titanium solid catalyst component, a catalyst component of an organo-metallic compound of a group I to III metal of the periodic table, a catalyst component of an organic halogen compound or of a transition metal compound, and a catalyst component of an organo-silicone compound or of a sterically hindered amine into contact with each other in an inert solvent in the absence of the alpha-olefin, or a catalyst formed by conducting preliminary polymerization of the alpha-olefin in the presence of the above-described catalyst wherein the final component is optional. This process provides polymers having excellent stereospecificity with the catalyst showing high activity, thus attaining industrial advantages.

公开(公告)号：EP0295312A4

公开(公告)日：1989-05-16

申请号：EP88900593

申请日：1988-07-19

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KIOKA MAMORU ,  KASHIWA NORIO

IPC: C08F4/642 ,  C08F4/60 ,  C08F4/64 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00 ,  C08F110/02 ,  C08F210/16

CPC classification number: C08F10/00 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F110/02 ,  C08F210/16 ,  Y10S526/943 ,  C08F2500/18 ,  C08F2500/12 ,  C08F2500/24 ,  C08F2500/03 ,  C08F210/14 ,  C08F2500/08

Abstract: The catalyst comprises a compound of a transition metal of the group IV of the periodic table, aluminoxane, and fine particles of an organic or inorganic carrier. This catalyst shows a significantly large polymerization activity on polymerization and copolymerization of olefin, and can give a polymer or copolymer having a large bulk density, a uniform particle size with few fine particles, and a narrow molecular weight distribution. Further, the copolymer has a narrow composition distribution.

公开(公告)号：EP0276323A4

公开(公告)日：1989-11-07

申请号：EP87904741

申请日：1987-07-20

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KIOKA MAMORU ,  TOYOTA AKINORI ,  KASHIWA NORIO

IPC: C08F4/64 ,  C08F4/42 ,  C08F4/60 ,  C08F10/06 ,  C08F210/06 ,  C08F297/08 ,  C08L23/10 ,  C08L23/16

CPC classification number: C08F297/083 ,  C08L23/10 ,  C08L23/16 ,  C08L2205/02 ,  C08L2666/04

Abstract: A process for preparing a propylene copolymer having excellent flow properties with an MFR value of 10 g/10 min or above. This process comprises a first polymerization step composed of at least two stages and a subsequent polymerization step. An important point in this process is control of the limiting viscosity of a crystalline propylene polymer obtained in the first stage of the first polymerization step and that of a crystalline polymer obtained in the final stage.

公开(公告)号：EP0279863A4

公开(公告)日：1988-08-29

申请号：EP87905645

申请日：1987-08-26

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KIOKA MAMORU ,  TOYOTA AKINORI ,  KASHIWA NORIO ,  TSUTSUI TOSHIYUKI

IPC: C08F4/64 ,  C08F4/642 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00 ,  C08F110/02

CPC classification number: C08F10/00 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F4/65925 ,  C08F110/02 ,  C08F2500/03 ,  C08F2500/18 ,  C08F2500/24

Abstract: The catalyst for polymerizing alpha-olefin comprises a component of a carrier having provided thereon a transition metal compound and an aluminoxane. The carrier is one having been treated with an organometallic compound, a halogen-containing silicon compound or an aluminoxane or an olefin prepolymer prepared by using these two components. The catalyst enables production of a spherical polymer having good particle size distribution and excellent bulk density when employed in slurry polymerization process or gas phase polymerisation process, particularly in the latter process. In addition, the catalyst provides a polymer having a narrow molecular weight distribution and, when applied to copolymerization of two or more olefins, it shows such an excellent polymerization activity that it provides an olefin copolymer having a narrow molecular weight distribution and a narrow composition distribution.

公开(公告)号：EP0314797A4

公开(公告)日：1989-09-19

申请号：EP88903383

申请日：1988-04-19

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KIOKA MAMORU ,  KASHIWA NORIO ,  TSUTSUI TOSHIYUKI ,  TOYOTA AKINORI

IPC: C08F4/62 ,  C08F4/642 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00

CPC classification number: C08F10/00 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  Y10S526/904 ,  Y10S526/943 ,  C08F4/6028

Abstract: A process for polymerizing or copolymerizing an olefin in the presence of an olefin polymerization catalyst prepared from: (A) a compound of a transition metal belonging to the group IVB of the periodic table, or (A') a solid catalyst component comprising a compound of a transition metal belonging to the group IVB of the periodic table supported on a particulate carrier; (B) aluminoxane; and (C) an organoaluminum compound represented by general formula (I): R1mAl(OR2)3-m or (II): R3nAl[OSiR43]3-n (wherein R1, R2 and R3 each represents a hydrocarbyl group, R4 represents a hydrocarbyl group, an alkoxy group or an aryloxy group, and m and n each represents a positive number of 0

公开(公告)号：EP0327649A4

公开(公告)日：1989-05-11

申请号：EP88900586

申请日：1987-12-25

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KIOKA MAMORU ,  KASHIWA NORIO

IPC: C08F4/60 ,  C08F4/64 ,  C08F4/642 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00

CPC classification number: C08F10/00 ,  C08F4/65925 ,  Y10S526/904 ,  Y10S526/943 ,  C08F4/65916

Abstract: A solid catalyst for olefin polymerization and a process for its preparation. The catalyst comprises a compound of a transition metal of the group IV of the periodic table and aluminoxane as catalyst components, and is characterized by its large specific surface area. The catalyst shows a significantly large polymerization activity on homopolymerization or copolymerization of olefin. The polymers obtained by using the catalyst has a large bulk density, a uniform particle size with few fine particles, and a narrow molecular weight distribution. Further, the copolymer has a narrow composition distribution.

公开(公告)号：EP0175000A4

公开(公告)日：1986-09-04

申请号：EP85901560

申请日：1985-03-15

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KIOKA MAMORU ,  KASHIWA NORIO

IPC: C08F4/00 ,  C08F4/60 ,  C08F4/638 ,  C08F4/64 ,  C08F4/654 ,  C08F10/00 ,  C08F210/02 ,  C08F210/16

CPC classification number: C08F210/16 ,  Y10S526/909 ,  C08F4/6555 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/18 ,  C08F2500/24

Abstract: A process for producing ethylene copolymer having a density of 0.910 to 0.945 g/cm3, an ethylene content of 85 to 99.5 mol %, and the balance of C3 to C10 alpha-olefin, by using a titanium catalyst component (A) satisfying a binding parameter of special factors, which serves to advantageously circumvent troubles encountered in polymerization procedure and produce low- to middle-density ethylene copolymer of high quality on an industrial scale.

Abstract translation: 通过使用满足结合的钛催化剂组分（A），制备密度为0.910-0.945克/厘米3，乙烯含量为85-99.5摩尔％，余量为C3-C10α-烯烃的乙烯共聚物的方法 这些特殊因素的参数用于有利地避免在聚合过程中遇到的麻烦并且在工业规模上生产高质量的低至中密度乙烯共聚物。

公开(公告)号：CA2130009C

公开(公告)日：1998-09-22

申请号：CA2130009

申请日：1994-08-12

Applicant: MITSUI PETROCHEMICAL IND

Inventor： SHINOZAKI TETSUNORI ,  KIOKA MAMORU

IPC: C08F4/02 ,  C08F4/649 ,  C08F4/651 ,  C08F4/654 ,  C08F4/658 ,  C08F10/06 ,  C08F110/06 ,  C08F210/06 ,  C08F297/08

Abstract: The present invention provides olefin polymerization catalysts and processes for preparing a polypropylene and propylene block copolymer using said olefin polymerization catalysts. The olefin polymerization catalyst (1) of the invention is formed from: ¢I-1! a contact product obtained by contacting: (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (C) a specific organosilicon compound; ¢II-1! (D) a specific polyether compound; and optionally, ¢III! an organometallic compound catalyst component The olefin polymerization catalyst (2) of the invention is formed from: ¢I-2! a contact product obtained by contacting: (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (D) a specific polyether compound; ¢II-2! (C) a specific organosilicon compound; and optionally, ¢III! an organometallic compound catalyst component. The contact product ¢I-1! or ¢I-2! may be replaced by one which is obtained by prepolymerizing an olefin of 2 or more carbon atoms in the presence of the catalyst components for the contact product ¢I-1! or ¢I-2! in such a way that the amount of the prepolymer formed is 0.01 to 2,000 g based on 1 g of the solid titanium catalyst component (A). In the processes for preparing a polypropylene according to the invention, propylene is polymerized in the presence of the above-mentioned olefin polymerization catalysts. According to the invention, highly isotactic polypropylene can be prepared. The processes for preparing a propylene block copolymer according to the invention comprises the steps of polymerizing propylene to form a polypropylene component and copolymerizing ethylene and an .alpha.-olefin of 3 to 20 carbon atoms to form an ethylene/.alpha.-olefin copolymer component, in an optional order, in the presence of the specific polymerization catalysts. In the propylene block copolymer obtained by the invention, the polypropylene component is highly isotactic and the rubber component has a high intrinsic viscosity ¢n!.