公开(公告)号：JPH08127610A

公开(公告)日：1996-05-21

申请号：JP26526394

申请日：1994-10-28

Applicant: UBE INDUSTRIES

Inventor： NAKAZAWA HIROSHI ,  IGAI SHIGERU ,  IMAOKA KOJI ,  OGAWA EIKO

IPC: C08F4/642 ,  C08F4/60 ,  C08F10/00

Abstract: PURPOSE: To obtain a catalyst, having a high polymerization activity and providing the resultant polymer with a narrow molecular weight distribution, excellent in copolymerizability of ethylene with an α-olefin and capable of providing a copolymer having a narrow compositional distribution thereof. CONSTITUTION: This catalyst for polymerizing an olefin comprises (A) a transition metallic compound represented by the formula RB(pz)3 MX3 (M denotes a group IV or V transition metal of the periodic table; R denotes hydrogen or a hydrocarbon group; X denotes hydrogen, a hydrocarbon group, a hologen, amino group or an oxyhydrocarbon group; pz denotes pyrazoyl group) and (B) a compound selected from the group consisting of organoaluminumoxy compounds, Lewis acidic compounds and ionic compounds. Thereby, both the resultant polymer and copolymer have a low content of tacky oligomers and are excellent in mechanical properties.

公开(公告)号：JPH07133309A

公开(公告)日：1995-05-23

申请号：JP25316393

申请日：1993-10-08

Applicant: UBE INDUSTRIES

Inventor： IGAI SHIGERU ,  IMAOKA KOJI ,  MURAKAMI MASATO ,  OGAWA EIKO ,  MITANI NOBUHIRO

IPC: C08F4/656 ,  C08F10/00

Abstract: PURPOSE:To provide a catalyst system containing not an organoaluminumoxy compound but an ionizing agent which is inexpensive, non-corrosive, and less toxic. CONSTITUTION:The title catalyst comprises a metallocene compound and an ionic compound containing a (substituted) cyclopentadienyl anion. It may further contain an organometallic compound.

公开(公告)号：JPH0782314A

公开(公告)日：1995-03-28

申请号：JP22884693

申请日：1993-09-14

Applicant: UBE INDUSTRIES

Inventor： NAKAZAWA HIROSHI ,  IGAI SHIGERU ,  IMAOKA KOJI ,  OGAWA EIKO ,  MITANI NOBUHIRO

IPC: C08F4/70 ,  C08F4/60 ,  C08F10/00

Abstract: PURPOSE:To obtain a high-mol.wt. polyolefin and attain high catalytic activity in the polymerization by using a new catalyst system containing a palladium compound. CONSTITUTION:An olefin is polymerized in the presence of a catalyst comprising a palladium compound represented by the formula Pd(L )n(L )2 (wherein L is a neutral ligand, L is an anionic ligand, and n is 1, 2, 3, or 4) and an organoaluminumoxy compound.