§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US5194531A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for producing polyolefins

Assignee: Idemitsu Kosan Co Ltd
•
Filing: 1991-04-22
•
Granted: 1993-03-16
•
Expires: 2011-04-22
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Disclosed is a process for producing a polyolefin which comprises contacting an olefin with a catalyst comprising: (A) a solid catalyst component comprising, as essential components, (a) a magnesium compound, (b) halogenated titanium and (c) an electron donor compound; (B) an organoaluminum compound; and (C) an organosilicon compound selected from a group consisting of an organosilicon compound (C-1) having the general formula: (R.sup.1 O)(R.sup.2 O).sub.3-n Si(OR.sup.3).sub.n (I) wherein R 1 is a branched hydrocarbon residue; R 2 and R 3 may be the same as or different from each other, and are linear or branched hydrocarbon residues, respectively; and n is from 2 to 3; an organosilicon compound (C-2) having the general formula: ##STR1## wherein R 4 is a hydrocarbon residue in which a carbon atom adjacent to Si is a tertiary carbon atom; and R 5 is a linear or branched hydrocarbon residue; and an organosilicon compound (C-3) having the general formula: R.sup.6 R.sup.7 Si(OR.sup.8).sub.2 (III) wherein R 6 is a branched hydrocarbon residue; R 7 is a cyclic saturated hydrocarbon residue; and R 8 is a linear or branched hydrocarbon residue.

Inventors

  • 👤 Masatoshi Toda
  • 👤 Hideo Funabashi
  • 👤 Ryo Aburatani
  • 👤 Akinobu Sugahara

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 19:03
CPC Classifications
C; C08; C08F; C08F10/00

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 81 words
A process for producing a polyolefin which comprises contacting an olefin with a catalyst comprising: (A) a solid catalyst component comprising, as essential components, (a) a magnesium compound, (b) halogenated titanium and (c) an electron donor compound; (B) an organoaluminum compound; and (C) an organosilicon compound having the general formula: ##STR6## wherein R 4 is a hydrocarbon residue in which a carbon atom adjacent to Si is a tertiary carbon atom; and R 5 is a linear or branched hydrocarbon residue.
Claim 2
Dependent Claim 81 words
A process for producing a polyolefin which comprises contacting an olefin with a catalyst comprising: (A) a solid catalyst component comprising, as essential components, (a) a magnesium compound, (b) halogenated titanium and (c) an electron donor compound; (B) an organoaluminum compound; and (C) an organosilicon compound having the general formula: ##STR6## wherein R 4 is a hydrocarbon residue in which a carbon atom adjacent to Si is a tertiary carbon atom; and R 5 is a linear or branched hydrocarbon residue.
Claim 3
Dependent Claim 79 words
A process for producing a polyolefin which comprises contacting an olefin with a catalyst comprising: (A) a solid catalyst component comprising, as essential components, (a) a magnesium compound, (b) halogenated titanium and (c) an electron donor compound; (B) an organoaluminum compound; and (C) an organosilicon compound having the general formula: R.sup.6 R.sup.7 Si(OR.sup.8).sub.2 (III) wherein R 6 is a branched hydrocarbon residue; R 7 is a cyclic saturated hydrocarbon residue; and R8 is a linear or branched hydrocarbon residue.
Claim 4
Dependent Claim 79 words
A process for producing a polyolefin which comprises contacting an olefin with a catalyst comprising: (A) a solid catalyst component comprising, as essential components, (a) a magnesium compound, (b) halogenated titanium and (c) an electron donor compound; (B) an organoaluminum compound; and (C) an organosilicon compound having the general formula: R.sup.6 R.sup.7 Si(OR.sup.8).sub.2 (III) wherein R 6 is a branched hydrocarbon residue; R 7 is a cyclic saturated hydrocarbon residue; and R8 is a linear or branched hydrocarbon residue.
Claim 5
Dependent Claim 31 words
A process according to claim 1 or 2, wherein the electron donor compound is at least one member selected from monoesters of aromatic dicarboxylic acids and diesters of aromatic dicarboxylic acids.
Claim 6
Dependent Claim 25 words
A process according to claim 3, wherein the magnesium compound in the solid catalyst component is a reaction product of metallic magnesium, alcohol and halogen.
Claim 7
Dependent Claim 27 words
A process as claimed in claim 1 wherein the magnesium compound in the solid catalyst component is a reaction product of metal magnesium, alcohol and a halogen.
Claim 8
Dependent Claim 27 words
A process as claimed in claim 2 wherein the magnesium compound in the solid catalyst component is a reaction product of metal magnesium, alcohol and a halogen.

References Cited (Backward Citations)

EP0299712A2 Cited
EP0385765A2 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1996-03-15 1996-09-14 1997-03-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2000-03-15 2000-09-14 2001-03-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2004-03-15 2004-09-14 2005-03-16 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag