US3859267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for olefin polymerization
Assignee: Mitsubishi Chemical Corp
•
Filing: 1973-04-12
•
Granted: 1975-01-07
•
Expires: 1993-04-12
Abstract
Abstract A process is described for the polymerization of olefins such as ethylene, propylene, butadiene and the like in the presence of a catalyst comprising a first component prepared by reducing a mixture or a reaction product of (a) a titanium tetrahalide; (b) a titanium compound having the formula TiXn(OR)4 n, wherein R represents an alkyl group of 1 - 14 carbon atoms, X represents a halogen atom and n represents an integer from 0 - 3; and (c) a vanadyl halide with a first organoaluminum compound, and a second component consisting of a second organoaluminum compound.
Inventors
- 👤 Kazuo Yamaguchi
- 👤 Natsuki Kanoh
- 👤 Shigeaki Okano
- 👤 Atsushi Murakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:44
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/907
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
51 words
A PROCESS FOR THE POLYMERIZATION OF AN A-OLEFIN WHICH COMPRISES POLYMERIZING AN A-OLEFIN OR A MIXTURE THEREOF IN A PRESENCE OF A CATALYST SYSTEM COMPRISING (1) A FIRST SOLID COMPONENT PREPARED BY REDUCING A MIXTURE OR A REACTION PRODUCT OF (A) A TITANIUM TETRAHALIDE, (B) A TITANIUM COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
51 words
A PROCESS FOR THE POLYMERIZATION OF AN A-OLEFIN WHICH COMPRISES POLYMERIZING AN A-OLEFIN OR A MIXTURE THEREOF IN A PRESENCE OF A CATALYST SYSTEM COMPRISING (1) A FIRST SOLID COMPONENT PREPARED BY REDUCING A MIXTURE OR A REACTION PRODUCT OF (A) A TITANIUM TETRAHALIDE, (B) A TITANIUM COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
102 words
A process for the polymerization of an Alpha -olefin which comprises polymerizing an Alpha -olefin or a mixture thereof in a presence of a catalyst system comprising (1) a first solid component prepared by reducing a mixture or a reaction product of (a) a titanium tetrahalide, (b) a titanium compound having the formula TiXn(OR)4 n wherein R represents an alkyl group of 1 - 14 carbon atoms; X represents a halogen atom and n represents an integer from 0 - 3; and (c) a vanadyl dihalide with a first organoaluminum compound; and (2) a second component consisting of a second organoaluminum compound.
Claim 4
Dependent Claim
102 words
A process for the polymerization of an Alpha -olefin which comprises polymerizing an Alpha -olefin or a mixture thereof in a presence of a catalyst system comprising (1) a first solid component prepared by reducing a mixture or a reaction product of (a) a titanium tetrahalide, (b) a titanium compound having the formula TiXn(OR)4 n wherein R represents an alkyl group of 1 - 14 carbon atoms; X represents a halogen atom and n represents an integer from 0 - 3; and (c) a vanadyl dihalide with a first organoaluminum compound; and (2) a second component consisting of a second organoaluminum compound.
Claim 5
Dependent Claim
20 words
The process according to claim 1, wherein the polymerization of said Alpha -olefin is conducted in the presence of hydrogen.
Claim 6
Dependent Claim
22 words
The process according to claim 1, wherein said Alpha -olefin selected from the group consisting of ethylene, propylene, butene-1 and mixtures thereof.
Claim 7
Dependent Claim
47 words
The process according to claim 1, wherein said titanium tetrahalide is TiCl4, TiBr4 TiI4; and said titanium compound having the formula TiXn(OR)4 n is Ti(OR)4, Ti(OR)3Cl, Ti(OR)2Cl2, or Ti(OR)Cl3, wherein R represents methyl, ethyl, propyl, butyl or pentyl; and said vanadyl dihalide is VOCl2, VOBr2 or VOI2.
Claim 8
Dependent Claim
51 words
The process according to claim 1 wherein said organoaluminum compound is a compound having the formula AlRmX3 m wherein R represents a C1 14 hydrocarbon group selected from the group consisting of alkyl, aralkyl, aryl and alicyclic; X presents a halogen atom and m represents an integer from 1 - 3.
Claim 9
Dependent Claim
113 words
A process for the polymerization of an Alpha -olefin which comprises polymerizing an Alpha -olefin or a mixture thereof in a presence of a catalyst system comprising (1) a first solid component prepared by reducing a mixture or a reaction product of (a) a titanium tetrahalide, (b) a titanium compound having the formula TiXn(OR)4 n wherein R represents an alkyl group of 1 - 14 carbon atoms; X represents a halogen atom and n represents an integer from 0 - 1; (c) a vanadyl dihalide and (d) water present in amounts ranging from 2.5 - 10 times the molar amount of VOX2 with a first organoaluminum compound; and (2) a second organoaluminum compound.
Claim 10
Dependent Claim
113 words
A process for the polymerization of an Alpha -olefin which comprises polymerizing an Alpha -olefin or a mixture thereof in a presence of a catalyst system comprising (1) a first solid component prepared by reducing a mixture or a reaction product of (a) a titanium tetrahalide, (b) a titanium compound having the formula TiXn(OR)4 n wherein R represents an alkyl group of 1 - 14 carbon atoms; X represents a halogen atom and n represents an integer from 0 - 1; (c) a vanadyl dihalide and (d) water present in amounts ranging from 2.5 - 10 times the molar amount of VOX2 with a first organoaluminum compound; and (2) a second organoaluminum compound.
Claim 11
Dependent Claim
42 words
The process according to claim 1, wherein the temperature of reduction of said mixture or reaction product by said first organoaluminum compound is maintained within the range of 0* -150*C to control the distribution of the molecular weight of the product polymer.
Claim 12
Dependent Claim
42 words
The process according to claim 6 wherein the molar amount of water used is maintained within the range of 3 - 6 times the molar amount of VOX2 in order to control the distribution of the molecular weight of the product polymer.
Claim 13
Dependent Claim
36 words
The process according to claim 1 wherein the molar ratio of the sum of the moles of said titanium tetrahalide and said titanium compound to said vanadyl dihalide is in the range of 1.0 : 0.01-1.0.
Claim 14
Dependent Claim
31 words
The process according to claim 1 wherein the molar ratio of said titanium tetrahalide to said titanium compound having the formula TiXn(OR)4 n is in the range of 0.5 - 2.0.
Claim 15
Dependent Claim
36 words
The process according to claim 1 wherein said mixture or reaction product of said titanium tetrahalide, said titanium compound and said vanadyl dihalide is reduced with more than an equi-molar amount of said first organoaluminum compound.
Claim 16
Dependent Claim
17 words
The process according to claim 1 wherein said first solid component is washed with an inert solvent.
References Cited (Backward Citations)
US3308112A
Cited
US2986531A
Cited
US3462399A
Cited
US3723350A
Cited
US3674766A
Cited
US3707530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |