Patent US4028481A successfully refreshed from Google Patents.
US4028481A
Expired / Lapsed
US
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Production of olefin polymers and novel catalysts therefore
Assignee: Mitsui Toatsu Chemicals Inc
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Filing: 1973-08-06
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Granted: 1977-06-07
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Expires: 1993-08-06
Abstract
Abstract In the polymerization of alpha -olefins, a titanium trichloride containing catalyst activated by copulverization with at least one additive selected from I. An organic compound containing oxygen, sulfur or phosphorus such as:
Inventors
- 👤 Tetsunosuke Shiomura
- 👤 Akiro Ito
- 👤 Yoshio Morimoto
- 👤 Tetsuya Iwao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:13
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/906
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
80 words
A catalyst composition useful for polymerizing α-olefins comprising: A. an activated titanium trichloride component obtained by copulverizing a titanium trichloride composition with a complex or reaction product of an aluminum halide and at least one organic oxygen-containing compound selected from the group consisting of oxyethers, carboxylic esters and oxyketones and washing the product of copulverization with a solvent selected from the group consisting of aliphatic, cycloaliphatic and aromatic hydrocarbons, their halogen derivatives and mixtures thereof; and B. an organoaluminum compound.
Claim 2
Dependent Claim
80 words
A catalyst composition useful for polymerizing α-olefins comprising: A. an activated titanium trichloride component obtained by copulverizing a titanium trichloride composition with a complex or reaction product of an aluminum halide and at least one organic oxygen-containing compound selected from the group consisting of oxyethers, carboxylic esters and oxyketones and washing the product of copulverization with a solvent selected from the group consisting of aliphatic, cycloaliphatic and aromatic hydrocarbons, their halogen derivatives and mixtures thereof; and B. an organoaluminum compound.
Claim 3
Dependent Claim
26 words
The catalyst composition according to claim 1 wherein the titanium trichloride composition is prepared by reduction of titanium tetrachloride with metallic aluminum or an organoaluminum compound.
Claim 4
Dependent Claim
43 words
The catalyst composition according to claim 1 wherein at least 30 weight percent of said complex or reaction product is removed by washing one part by weight of said product of copulverization with from 1 to 500 parts by weight of said solvent.
Claim 5
Dependent Claim
41 words
The catalyst composition according to claim 1 wherein the organoaluminum compound has the formula Al(R 5 ) 2 X wherein R 5 is alkyl or aryl having up to 20 carbon atoms and X is R 5 , halogen or alkoxy.
Claim 6
Dependent Claim
50 words
The catalyst composition according to claim 1 wherein said complex or reaction product is present in an amount of a about 1 to 30 weight percent of said titanium trichloride composition and the molar ratio of said aluminum halide to said organic oxygen-containing compound is between about 2:1 and 1:2.
Claim 7
Dependent Claim
15 words
The catalyst composition according to claim 1 wherein said organic oxygen-containing compound is an oxyether.
Claim 8
Dependent Claim
16 words
The catalyst composition according to claim 1 wherein said organic oxygen-containing compound is a carboxylic ester.
Claim 9
Dependent Claim
15 words
The catalyst composition according to claim 1 wherein said organic oxygen-containing compound is an oxyketone.
Claim 10
Dependent Claim
22 words
A process for polymerizing an α-olefin which comprises polymerizing or copolymerizing said α-olefin in the presence of the catalyst of claim 1.
Claim 11
Dependent Claim
25 words
The process according to claim 9 wherein the titanium trichloride composition is prepared by reduction of titanium tetrachloride with metallic aluminum or an organoaluminum compound.
Claim 12
Dependent Claim
42 words
The process according to claim 9 wherein at least 30 weight percent of said complex or reaction product is removed by washing one part by weight of said product of copulverization with from 1 to 500 parts by weight of said solvent.
Claim 13
Dependent Claim
40 words
The process according to claim 9 wherein the organo-aluminum compound has the formula Al(R 5 ) 2 X wherein R 5 is alkyl or aryl having up to 2 carbon atoms and X is R 5 , halogen or alkoxy.
Claim 14
Dependent Claim
23 words
The process according to claim 9 wherein said α-olefin is selected from the group consisting of ethylene, propylene, butene-1, pentene-1, hexene-1 and 4-methyl-pentene-1.
Claim 15
Dependent Claim
13 words
The process according to claim 9 wherein said oxygen-containing compound is an oxyether.
Claim 16
Dependent Claim
14 words
The process according to claim 9 wherein said oxygen-containing compound is a carboxylic ester.
Claim 17
Dependent Claim
13 words
The process according to claim 9 wherein said oxygen-containing compound is an oxyketone.
Claim 18
Dependent Claim
83 words
A process for polymerizing an alpha-olefin comprising polymerizing said alpha-olefin with a catalyst comprising: (A) a titanium trichloride component obtained by copulverizing a titanium trichloride composition with a complex or reaction product of an aluminum trihalide and at least one organic oxygen-containing compound selected from the groups consisting of oxyethers, carboxylic esters and oxyketones, washing the product of copulverization with a solvent selected from the group consisting of aliphatic and aromatic hydrocarbons, their halogen derivatives and mixtures thereof; and (B) an organoaluminum compound.
Claim 19
Dependent Claim
83 words
A process for polymerizing an alpha-olefin comprising polymerizing said alpha-olefin with a catalyst comprising: (A) a titanium trichloride component obtained by copulverizing a titanium trichloride composition with a complex or reaction product of an aluminum trihalide and at least one organic oxygen-containing compound selected from the groups consisting of oxyethers, carboxylic esters and oxyketones, washing the product of copulverization with a solvent selected from the group consisting of aliphatic and aromatic hydrocarbons, their halogen derivatives and mixtures thereof; and (B) an organoaluminum compound.
References Cited (Backward Citations)
GB1001820A
Cited
US3701763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |