Patent US4921825A successfully refreshed from Google Patents.
US4921825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid catalyst for olefin polymerization and processes for its production
Assignee: Mitsui Chemicals Inc
•
Filing: 1987-12-28
•
Granted: 1990-05-01
•
Expires: 2007-12-28
Abstract
Abstract PCT No. PCT/JP87/01047 Sec. 371 Date Aug. 23, 1988 Sec. 102(e) Date Aug. 23, 1988 PCT Filed Dec. 28, 1987 PCT Pub. No. WO88/05058 PCT Pub. Date Jul. 14, 1988.This invention is a catalyst for polymerization of olefins, comprising a compound of a transition metal of Group IVB of the periodic table, an aluminoxane and a particulate organic or inorganic compound carrier. This catalyst shows very high activity in the polymerization and copolymerization of olefins and gives polymers having a high bulk density, a uniform particle size, a low content of fine particles and a narrow molecular weight distribution and in the case of copolymers, a narrow composition distribution as well.
Inventors
- 👤 Mamoru Kioka
- 👤 Norio Kashiwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:52
CPC Classifications
C; C08; C08F; C08F10/00; C08F110/00; C08F110/02; C08F210/00; C08F210/16; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65912; C08F4/65916; C08F4/6592; Y; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
87 words
A process for forming a solid catalyst for olefin polymerization from an aluminoxane, a compound of a transition metal of Group IVB of the Periodic Table and a particulate organic or inorganic compound carrier, which comprises: at least a step comprising contacting a solution of said aluminoxane in a first solvent with a second solvent in which said aluminoxane is insoluble or sparingly soluble, in the presence of said particulate organic or inorganic compound carrier, to deposit said aluminoxane on said particulate organic or inorganic compound carrier.
Claim 2
Dependent Claim
87 words
A process for forming a solid catalyst for olefin polymerization from an aluminoxane, a compound of a transition metal of Group IVB of the Periodic Table and a particulate organic or inorganic compound carrier, which comprises: at least a step comprising contacting a solution of said aluminoxane in a first solvent with a second solvent in which said aluminoxane is insoluble or sparingly soluble, in the presence of said particulate organic or inorganic compound carrier, to deposit said aluminoxane on said particulate organic or inorganic compound carrier.
Claim 3
Dependent Claim
93 words
The process of claim 1, wherein said process comprises: (1) contacting a suspension of said particulate organic or inorganic compound carrier dispersed in a solution of said aluminoxane in said first solvent with said second solvent in which the aluminoxane is insoluble or sparingly soluble, to form an aluminoxane supported on said particulate organic or inorganic compound carrier, and (2) contacting said aluminoxane supported on said particulate organic or inorganic compound carrier with a solution of said compound of a transition metal of Group IVB of the Periodic Table in a third solvent.
Claim 4
Dependent Claim
64 words
The process of claim 1, wherein said process comprises: (1) dispersing said particulate organic or inorganic compound carrier in a solution of said aluminoxane and said compound of a transition metal of Group IVB of the Periodic Table in said first solvent to prepare a suspension, and (2) contacting said suspension with said second solvent in which said aluminoxane is insoluble or sparingly soluble:
Claim 5
Dependent Claim
93 words
The process of claim 1, wherein said process comprises: (1) contacting a suspension of said particulate organic or inorganic compound carrier dispersed in said second solvent in which said aluminoxane is insoluble or sparingly soluble with a solution of said aluminoxane in said first solvent to form an aluminoxane supported on said particulate organic or inorganic compound carrier, and (2) contacting said aluminoxane supported on said particulate organic or inorganic compound carrier with a solution of said compound of a transition metal of Group IVB of the Periodic Table in a third solvent.
Claim 6
Dependent Claim
67 words
The process of claim 1, wherein said process comprises: (1) preparing a suspension of said particulate organic or inorganic compound carrier in said second solvent in which said aluminoxane is insoluble or sparingly soluble and preparing a solution of said aluminoxane and said compound of a transition metal of Group IVB of the Periodic Table in said first solvent, and (2) contacting said suspension and said solution.
Claim 7
Dependent Claim
99 words
The process of claim 1, wherein said catalyst contains 0.5 to 500 milligram-atoms of said transition metal of said compound of a transition metal of Group IVB of the Periodic Table and 5 to 50,000 milligram-atoms of aluminum of said aluminoxane per 100 grams of said particulate organic or inorganic compound carrier; has an atomic ratio of aluminum atoms of said aluminoxane to transition metal atoms of said compound of a transition metal of Group IVB of the Periodic Table in the range of from 1 to 1,000; and has an average particle diameter of 5 to 200 micrometers.
Claim 8
Dependent Claim
20 words
The process of claim 2, wherein step (1) further comprises evaporating said first solvent to promote precipitation of said aluminoxane.
Claim 9
Dependent Claim
25 words
The process of claim 2, wherein said aluminoxane solution contains 0.1 to 50 liters of said first solvent per gram-atom of aluminum in said aluminoxane.
Claim 10
Dependent Claim
30 words
The process of claim 8, wherein said second solvent is used in an amount of 10 to 10,000 parts by weight per 100 parts by weight of said aluminoxane solution.
Claim 11
Dependent Claim
33 words
The process of claim 8, wherein said particulate organic or inorganic carrier compound is present in said aluminoxane solution in an amount of 1 to 500 grams per liter of said aluminoxane solution.
Claim 12
Dependent Claim
33 words
The process of claim 8, wherein said transition metal of Group IVB of the Periodic Table is used in an amount of 0.0005 to 1 gram-atom per gram-atom of aluminum in said aluminoxane.
Claim 13
Dependent Claim
39 words
The process of claim 11, wherein said third solvent is present in an amount of 1 to 500 liters per gram-atom of said transition metal of said compound of a transition metal of Group IVB of the Periodic Table.
Claim 14
Dependent Claim
34 words
The process of claim 3, wherein step (2) further comprises evaporating said first solvent to promote precipitation of said aluminoxane and/or said compound of a transition metal of Group IVB of the Periodic Table.
Claim 15
Dependent Claim
46 words
The process of claim 3, wherein said second solvent is used in an amount of 10 to 10,000 parts by weight per 100 parts by weight of said solution of said aluminoxane and said compound of a transition metal of Group IVB of the Periodic Table.
Claim 16
Dependent Claim
41 words
The process of claim 3, wherein said solution of said aluminoxane and said compound of a transition metal of Group IVB of the Periodic Table contains 0.1 to 50 liters of said first solvent per gram-atom of aluminum in said aluminoxane.
Claim 17
Dependent Claim
38 words
The process of claim 15, wherein said compound of said transition metal of Group IVB of the Periodic Table is present in an amount of 0.0005 to 1 gram-atom transition metal per gram-atom of aluminum in said aluminoxane.
Claim 18
Dependent Claim
45 words
The process of claim 16, wherein said particulate organic or inorganic compound carrier is present in an amount of 1 to 500 grams per liter of said solution of said aluminoxane and said compound of a transition metal of Group IVB of the Periodic Table.
Claim 19
Dependent Claim
20 words
The process of claim 4, wherein step (1) further comprises evaporating said first solvent to promote precipitation of said aluminoxane.
Claim 20
Dependent Claim
39 words
The process of claim 4, wherein said suspension of said particulate organic or inorganic compound carrier in said second solvent contains 1 to 500 grams of said particulate organic or inorganic compound carrier per liter of said second solvent.
Claim 21
Dependent Claim
29 words
The process of claim 4, wherein said aluminoxane solution is used in an amount of 1 to 1,000 parts by weight per 100 parts by weight of said suspension.
Claim 22
Dependent Claim
25 words
The process of claim 4, wherein said aluminoxane solution contains 0.1 to 50 liters of said first solvent per gram-atom of aluminum in said aluminoxane.
Claim 23
Dependent Claim
47 words
The process of claim 4, wherein said compound of a transition metal of Group IVB of the Periodic Table is used in an amount of 0.0005 to 1 gram-atom transition metal per gram-atom of aluminum in said aluminoxane supported on said particulate organic or inorganic compound carrier.
Claim 24
Dependent Claim
34 words
The process of claim 5, wherein step (2) further comprises evaporating said first solvent to promote precipitation of said aluminoxane and/or said compound of a transition metal of Group IVB of the Periodic Table.
Claim 25
Dependent Claim
39 words
The process of claim 5, wherein said suspension of said particulate organic or inorganic compound carrier in said second solvent contains 1 to 500 grams of said particulate organic or inorganic compound carrier per liter of said second solvent.
Claim 26
Dependent Claim
75 words
The process of claim 5, wherein said solution of said aluminoxane and said compound of a transition metal of Group IVB of the Periodic Table in said first solvent contains 0.1 to 50 liters of said first solvent per gram-atom of aluminum in said aluminoxane and 0.0005 to 1 gram-atom of said transition metal in said compound of a transition metal of Group IVB of the Periodic Table per gram-atom of aluminum in said aluminoxane.
Claim 27
Dependent Claim
58 words
The process of claim 5, wherein 1 to 1000 parts by weight of said solution of said aluminoxane and said compound of a transition metal of Group IVB of the Periodic Table in said first solvent is contacted with 100 parts by weight of said suspension of said particulate organic or inorganic compound carrier in said second solvent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |