Patent US1948797A successfully refreshed from Google Patents.
Patent US4716206A successfully refreshed from Google Patents.
US4716206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerization of olefins
Assignee: Tonen General Sekiyu KK
•
Filing: 1986-11-05
•
Granted: 1987-12-29
•
Expires: 2006-11-05
Abstract
Abstract A process for homopolymerizing an olefin or copolymerizing an olefin with another olefin in the presence of a catalyst composed of (a) a solid catalyst component containing magnesium atoms, titanium atoms, halogen atoms, and an electron donor compound, (b) an organoaluminum compound represented by the formula R 1 R 2 R 3 Al (wherein R 1 , R 2 , and R 3 , which may be the same or different, each denote a C 1-20 alkyl, alkenyl, cycloalkyl, aryl, aralkyl, or alkoxy group, or a hydrogen atom; (c) an organoaluminum compound represented by the formula R 4 3-n AlX n (wherein R 4 denotes a C 1-20 alkyl, alkenyl, cycloalkyl, aryl, aralkyl, or alkoxy group; X denotes a halogen atom; and n≧1), (d) an electron donor compound containing a nitrogen atom, sulfur atom, oxygen atom, or phosphorus atom, and (e) an aromatic ester compound.
Inventors
- 👤 Masahito Fujita
- 👤 Masami Kizaki
- 👤 Makoto Miyazaki
- 👤 Naomi Inaba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:21
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
204 words
A process for the polymerization of an olefin or copolymerization an olefin with another olefin in the presence of a catalyst system comprising A. a titanium containing catalyst component, and B. a cocatalyst system comprising (a) an organoaluminum compound represented by the formula R 1 R 2 R 3 Al wherein R 1 , R 2 and R 3 , which may be the same or different, each denotes a C 1 -C 20 alkyl, alkenyl, cycloalkyl, aryl, aralkyl, or alkoxy group, or a hydrogen atom, (b) an organoaluminum halide represented by the formula R 3-n 4 AlX n wherein R 4 denotes a C 1 -C 20 alkyl, alkenyl, cycloalkyl, aryl, aralkyl or alkoxy group, X denotes a halogen atom and n is equal to or greater than 1, (c) an electron donor compound containing a nitrogen atom, sulfur atom, oxygen atom or phosphorous atom, and (d) an aromatic carboxylic acid ester, wherein the molar ratio of component a. to b. is in the range of 90:10 to 30:70, the molar ratio of component c. to d. is in the range of 5:95 to 70:30 nd the molar ratio of component a.+b. to component c.+d. is in the range of 50:50 to 85:15.
Claim 2
Dependent Claim
204 words
A process for the polymerization of an olefin or copolymerization an olefin with another olefin in the presence of a catalyst system comprising A. a titanium containing catalyst component, and B. a cocatalyst system comprising (a) an organoaluminum compound represented by the formula R 1 R 2 R 3 Al wherein R 1 , R 2 and R 3 , which may be the same or different, each denotes a C 1 -C 20 alkyl, alkenyl, cycloalkyl, aryl, aralkyl, or alkoxy group, or a hydrogen atom, (b) an organoaluminum halide represented by the formula R 3-n 4 AlX n wherein R 4 denotes a C 1 -C 20 alkyl, alkenyl, cycloalkyl, aryl, aralkyl or alkoxy group, X denotes a halogen atom and n is equal to or greater than 1, (c) an electron donor compound containing a nitrogen atom, sulfur atom, oxygen atom or phosphorous atom, and (d) an aromatic carboxylic acid ester, wherein the molar ratio of component a. to b. is in the range of 90:10 to 30:70, the molar ratio of component c. to d. is in the range of 5:95 to 70:30 nd the molar ratio of component a.+b. to component c.+d. is in the range of 50:50 to 85:15.
Claim 3
Dependent Claim
15 words
The process in accordance with claim 1 wherein the organoaluminum compound is a trialkyl aluminum.
Claim 4
Dependent Claim
31 words
The process in accordance with claim 2 wherein the organoaluminum compound is selected from triethyl aluminum and triisobutyl aluminum and the organoaluminum halide is selected from diethyaluminum chloride and ethylaluminum dichloride.
Claim 5
Dependent Claim
16 words
The process in accordance with claim 2 wherein the electron donor compound contains a nitrogen atom.
Claim 6
Dependent Claim
24 words
The process of claim 4 wherein the aromatic ester is selected from methyl p-toluate and ethyl p-anisate and the nitrogen containing compound is 2,2,6,6-tetramethylpiperidine.
Claim 7
Dependent Claim
22 words
The process in accordance with claim 1 wherein the cocatalyst is compared of triethyl aluminum, diethyl aluminum chloride, methyl p-toluate and 2,2,6-tetramethylpiperidine.
References Cited (Backward Citations)
US3549717A
Cited
US4234710A
Cited
US4312784A
Cited
US4279776A
Cited
US4321345A
Cited
US4324690A
Cited
US4335015A
Cited
US4442225A
Cited
EP0086644A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-28 | 1991-06-29 | 1991-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-28 | 1995-06-29 | 1995-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-28 | 1999-06-29 | 1999-12-29 | $7700.00 | Window Closed / Lapsed |