公开(公告)号：KR860001912B1

公开(公告)日：1986-10-24

申请号：KR830003633

申请日：1983-08-03

Applicant: MITSUI TOATSU CHEMICALS

Inventor： OOKA TATSUO ,  HUNAKOSHI YOSHIUKI ,  UCHIKAWA NOBUTAKA

IPC: C08F6/00 ,  B01D11/00 ,  B01D11/02 ,  B29B15/00 ,  C08F6/08 ,  C08F2/00 ,  C08F2/02

公开(公告)号：KR850001403B1

公开(公告)日：1985-09-30

申请号：KR820000938

申请日：1982-03-04

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASNUMA TATASHI ,  UCHIKAWA NOBUTAKA ,  SHIOMURA TEZUNOSUKE ,  FUJIO ECHIROO

IPC: C08F297/08 ,  C08F2/02 ,  C08F2/06 ,  C08F2/12

Abstract: An improved process for producing a propylene-ethylene block copolymer uses a stereo-specific catalyst(Ziegler-Natta Cat.). Multi- step polymerization of the propyrene-ethylene block copolymer is performed by the use of a connected reactor. In this polymerization, the solvent of one of the connected reactors is propyrene without using an inert solvent, and the reaction rates of ethylene/propyrene are different from each other. The title material has a high degree of strength.

公开(公告)号：KR850000529B1

公开(公告)日：1985-04-17

申请号：KR810001829

申请日：1981-05-25

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASANUMA TADASHI ,  UCHIKAWA NOBUTAKA ,  SHIOMURA TETSUNOSUKE

IPC: C08F4/00 ,  C08F4/02 ,  C08F4/50 ,  C08F4/60 ,  C08F4/64 ,  C08F4/642 ,  C08F10/00 ,  C08F10/02

公开(公告)号：ES2115829T3

公开(公告)日：1998-07-01

申请号：ES94113914

申请日：1990-10-04

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASANUMA TADASHI ,  SHIOMURA TETSUNOSUKE ,  SASAKI TATEYO ,  IWATANI TUTOMU ,  UCHIKAWA NOBUTAKA ,  KITABAYASHI KOUJI

IPC: C08F210/06 ,  C08F210/08 ,  C08L23/10 ,  C08L23/14 ,  C08L23/20 ,  C09J123/10

Abstract: Copolymers of butene-1 and propylene, having specific physical properties and substantially a syndiotactic structure; and easily heat-sealable polypropylene resin compositions comprising 5-50 parts by weight of one of the copolymers and 95-50 parts by weight of a stereoregular crystalline propylene-ethylene copolymer or propylene-ethylene-C4-12- alpha -olefin copolymer having specific compositions and melt flow index.

公开(公告)号：DE69032273D1

公开(公告)日：1998-05-28

申请号：DE69032273

申请日：1990-10-04

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASANUMA TADASHI ,  SHIOMURA TETSUNOSUKE ,  SASAKI TATEYO ,  IWATANI TUTOMU ,  UCHIKAWA NOBUTAKA ,  KITABAYASHI KOUJI

IPC: C08F210/06 ,  C08F210/08 ,  C08L23/10 ,  C08L23/14 ,  C08L23/20 ,  C09J123/10

Abstract: Copolymers of butene-1 and propylene, having specific physical properties and substantially a syndiotactic structure; and easily heat-sealable polypropylene resin compositions comprising 5-50 parts by weight of one of the copolymers and 95-50 parts by weight of a stereoregular crystalline propylene-ethylene copolymer or propylene-ethylene-C4-12- alpha -olefin copolymer having specific compositions and melt flow index.

公开(公告)号：DE69023575D1

公开(公告)日：1995-12-21

申请号：DE69023575

申请日：1990-08-20

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASANUMA TADASHI ,  SHIOMURA TETSUNOSUKE ,  KIMURA SHIGERU ,  INOUE TAKEO ,  UCHIKAWA NOBUTAKA

IPC: C08J5/18 ,  C08L23/10

公开(公告)号：ES2070319T3

公开(公告)日：1995-06-01

申请号：ES90905671

申请日：1990-04-10

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASANUMA TADASHI ,  SHIOMURA TETSUNOSUKE ,  UCHIKAWA NOBUTAKA ,  SASAKI TATEYO ,  INOUE TAKEO

IPC: B29C67/24 ,  B29C71/02 ,  C08J5/00 ,  C08K3/00 ,  C08K5/00 ,  C08L23/10

公开(公告)号：DE69007550T2

公开(公告)日：1994-10-13

申请号：DE69007550

申请日：1990-06-14

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASANUMA TADASHI ,  SHIOMURA TETSUNOSUKE ,  UCHIKAWA NOBUTAKA ,  TAMAI YUKARI ,  SASAKI TATEYO ,  IWATANI TUTOMU

IPC: C08F10/14 ,  C08F110/14 ,  C08F210/16 ,  C08F210/14

Abstract: A polymer of 4-methylpentene-1 having a substantially syndiotactic structure, which polymer contains 0 to 30 mol% of the alpha -olefin unit other than the 4-methylpentene-1 unit and has excellent physical properties.

公开(公告)号：DE3688323D1

公开(公告)日：1993-05-27

申请号：DE3688323

申请日：1986-12-09

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASANUMA TADASHI ,  UCHIKAWA NOBUTAKA ,  FUJIO ICHIRO

IPC: B01J19/00 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00 ,  C08F10/06 ,  C08F110/06 ,  C08F2/00

Abstract: Polypropylene of uniform quality is produced at a desired, constant production rate on a continuous basis in the presence of a catalyst system composed of a transition metal catalyst and an organoaluminum compound. The polypropylene production rate is calculated based on the quantity of heat removed per unit time from a reaction tank (1) operated at a constant temperature, and is controlled by varying the amount of the organoaluminum compound to be charged, when the weight ratio of the organoaluminum compound to the transition metal catalyst both retained in the reaction tank is not greater than a preset value. The production rate of polypropylene may also be controlled by varying the amount of the transition metal catalyst to be charged, when the weight ratio of the organoaluminum compound to the transition metal catalyst both retained in the reaction tank is greater than a preset value.

公开(公告)号：CA2018145C

公开(公告)日：1993-01-12

申请号：CA2018145

申请日：1990-06-04

Applicant: MITSUI TOATSU CHEMICALS

Inventor： ASANUMA TADASHI ,  SHIOMURA TETSUNOSUKE ,  NISHIMORI YUKARI ,  UCHIKAWA NOBUTAKA

IPC: C08F10/08 ,  C08F10/14 ,  C08F110/08 ,  C08F110/14

Abstract: : A poly-.alpha.-olefin of novel structure which is an addition polymer of an .alpha.-olefin having 4 carbon atoms or more, wherein (a) by the analysis of the peaks attributable to the side chain methylene groups directly bonded to the main chain in the 13C-NMR spectrum produced by the measurement in 1,2,4-trichloro-benzene, (i) a novel main peak not attributable to the isotactic structure thereof is positioned on the side of higher magnetic field than is the peak attributable to the isotactic structure, and (ii) the intensity of said main peak is 0.3 or more relative to the sum of the intensities of the total peaks attributable to the side chain methylene groups directly bonded to the main chain, and (b) the molecular weight measured by gel permeation chromatography and calculated as polypropylene is not less than 1,000.