US4564647A
Expired / Lapsed
US
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Process for the production of polyethylene compositions
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1984-11-08
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Granted: 1986-01-14
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Expires: 2004-11-08
Abstract
Abstract A process for producing a polyethylene composition which comprises polymerizing ethylene in the presence of a catalyst comprising (A) a contact treatment product of (a) a high activity catalyst component and (b) a filler, and (B) an organoaluminum compound. This process has no need for a deashing step, i.e., a step to remove the catalyst after polymerization, since the catalyst has a remarkably high activity. In the polyethylene composition produced, the filler is dispersed uniformly and the separation of the filler from the polyethylene is scarcely observed.
Inventors
- 👤 Hiroshi Hayashi
- 👤 Koichi Matono
- 👤 Satoshi Asahi
- 👤 Michitake Uoi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:20
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/02; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65912; C08F4/65916; C08F4/6592; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
137 words
A low pressure process for producing a polyethylene composition which comprises polymerizing (i) ethylene or (ii) compolymerizing ethylene and a small amount of other α-olefins at low pressure to produce said polyethylene composition in the presence of an amount of a catalyst comprising: (A) a product resulting from contact treatment of (a) a high activity catalyst component containing a transition metal and soluble in a hydrocarbon solvent, and (b) a filler; and (B) an organoaluminum compound; wherein the component (a) has sufficient activity so that at least 10 kilograms of polyethylene per gram of the transition metal atom per unit ethylene partial pressure is produced in a low-pressure polymerization of ethylene in the presence of the component (a) and the component (B), sufficiently small so that deashing of said polyethylene composition to remove catalyst is not required.
Claim 2
Dependent Claim
137 words
A low pressure process for producing a polyethylene composition which comprises polymerizing (i) ethylene or (ii) compolymerizing ethylene and a small amount of other α-olefins at low pressure to produce said polyethylene composition in the presence of an amount of a catalyst comprising: (A) a product resulting from contact treatment of (a) a high activity catalyst component containing a transition metal and soluble in a hydrocarbon solvent, and (b) a filler; and (B) an organoaluminum compound; wherein the component (a) has sufficient activity so that at least 10 kilograms of polyethylene per gram of the transition metal atom per unit ethylene partial pressure is produced in a low-pressure polymerization of ethylene in the presence of the component (a) and the component (B), sufficiently small so that deashing of said polyethylene composition to remove catalyst is not required.
Claim 3
Dependent Claim
108 words
The process as claimed in claim 1, wherein the component (a) is a reaction product of (A) a higher fatty acid salt, (B) higher alcohol salt or (C) a compound which contains a long chain hydrocarbon group and a phosphoric acid with a magnesium or manganese salt and a titanium compound represented by the general formula: TiX n (OR) 4-n , wherein R is an alkyl group having from 1 to 10 carbon atoms, or an acyl group, X is a halogen atom, and n is a real number of 0 to 4, the molar ratio of the titanium compound to the salt being 0.5 or less: 1.
Claim 4
Dependent Claim
77 words
The process as claimed in claim 1, wherein the component (a) is a cyclopentadienyl compound represented by the general formula: (cp)MR 1 R 2 R 3 wherein cp is a cyclopentadienyl group, M is titanium, vanadium, zirconium or hafnium, and R 1 , R 2 and R 3 are each an alkyl group having from 1 to 6 carbon atoms, a cyclopentadienyl group, a halogen atom, or a hydrogen atom; and said organoaluminum compound (B) is aluminoxane.
Claim 5
Dependent Claim
74 words
The process as claimed in claim 1, wherein the component (a) is a cyclopentadienyl compound represented by the general formula: (cp) 2 MR 1 R 2 wherein cp is a cyclopentadienyl group, M is titanium, vanadium, zirconium or hafnium, and R 1 and R 2 are each an alkyl group having from 1 to 6 carbon atoms, a cyclopentadienyl group, a halogen atom, or a hydrogen atom; and said organoaluminum compound (B) is aluminoxane.
Claim 6
Dependent Claim
22 words
The process as claimed in claim 1, wherein the component (a) is a cyclopentadienyltitanium compound and said organoaluminum compound (B) is aluminoxane.
Claim 7
Dependent Claim
22 words
The process as claimed in claim 1, wherein the component (a) is a cyclopentadienylzirconium compound and said organoaluminum compound (B) is aluminoxane.
Claim 8
Dependent Claim
38 words
The process as claimed in claim 5, wherein the filler of the component (b) is brought into contact treatment with said aluminoxane prior to the contact treatment of the component (a) and the filler of the component (b).
Claim 9
Dependent Claim
20 words
The process as claimed in claim 1, wherein the transition metal contained in the component (a) is titanium or zirconium.
Claim 10
Dependent Claim
27 words
The process as claimed in claim 1, wherein the filler of the component (b) is one or more of metals, metal oxides, metal carbonates, and carbonaceous substances.
Claim 11
Dependent Claim
29 words
The process as claimed in claim 1, wherein the filler of the component (b) is a filler plated with a metal or covered with a metal or metal oxide.
Claim 12
Dependent Claim
22 words
The process as claimed in claim 1, wherein the filler of the component (b) is an organic pigment insoluble in hydrocarbon solvents.
Claim 13
Dependent Claim
21 words
The process as claimed in claim 1, wherein the filler of the component (b) is a fibrous, whisker-like or powdered ceramic.
Claim 14
Dependent Claim
23 words
The process as claimed in claim 1, wherein the filler of the component (b) is a solid foaming agent insoluble in hydrocarbon solvents.
Claim 15
Dependent Claim
23 words
The process as claimed in claim 1, wherein the filler of the component (b) has a maximum length of 5 millimeters or less.
Claim 16
Dependent Claim
27 words
The process as claimed in claim 1, wherein the proportion of the filler of the component (b)in the polyethylene composition is at least 0.5 percent by weight.
Claim 17
Dependent Claim
39 words
The process as claimed in claim 1, wherein the filler of the component (b) is brought into contact treatment with an organoaluminum compound prior to the contact treatment of the component (a) and the filler of the component (b).
Claim 18
Dependent Claim
158 words
A low pressure process for producing a polyethylene composition which comprises polymerizing (i) ethylene or (ii) copolymerizing ethylene and a small amount of other α-olefins at low pressure to produce said polyethylene composition in the presence of an amount of a catalyst comprising: (A) a product resulting from contact treatment of (a) a high activity catalyst component containing a transition metal and soluble in a hydrocarbon solvent, and (b) a filler; (B) an organoaluminum compound; and (C) a filler exhibiting an affinity for polyethylene, equivalent to or more than that of the filler of the component (b); wherein the component (a) has sufficient activity so that at least 10 kilograms of polyethylene per gram of the transition metal atom per unit ethylene partial pressure is produced in a low-pressure polymerization of ethylene in the presence of the component (a) and the component (B), sufficiently small so that deashing of said polyethylene composition to remove catalyst is not required.
Claim 19
Dependent Claim
158 words
A low pressure process for producing a polyethylene composition which comprises polymerizing (i) ethylene or (ii) copolymerizing ethylene and a small amount of other α-olefins at low pressure to produce said polyethylene composition in the presence of an amount of a catalyst comprising: (A) a product resulting from contact treatment of (a) a high activity catalyst component containing a transition metal and soluble in a hydrocarbon solvent, and (b) a filler; (B) an organoaluminum compound; and (C) a filler exhibiting an affinity for polyethylene, equivalent to or more than that of the filler of the component (b); wherein the component (a) has sufficient activity so that at least 10 kilograms of polyethylene per gram of the transition metal atom per unit ethylene partial pressure is produced in a low-pressure polymerization of ethylene in the presence of the component (a) and the component (B), sufficiently small so that deashing of said polyethylene composition to remove catalyst is not required.
Claim 20
Dependent Claim
27 words
The process as claimed in claim 17, wherein the filler of the component (b) is one or more of metals, metal oxides, metal carbonates, and carbonaceous substances.
Claim 21
Dependent Claim
27 words
The process as claimed in claim 17, wherein the filler of the component (C) is one or more of metals, metal oxides, metal carbonates, and carbonaceous substances.
Claim 22
Dependent Claim
27 words
The process as claimed in claim 5, wherein the filler of the component (b) is one or more of metals, metal oxides, metal carbonates, and carbonaceous substances.
Claim 23
Dependent Claim
29 words
The process as claimed in claim 5, wherein the filler of the component (b) is a filler plated with a metal or covered with a metal or metal oxide.
Claim 24
Dependent Claim
22 words
The process as claimed in claim 5, wherein the filler of the component (b) is an organic pigment insoluble in hydrocarbon solvents.
Claim 25
Dependent Claim
21 words
The process as claimed in claim 5, wherein the filler of the component (b) is a fibrous, whisker-like or powdered ceramic.
Claim 26
Dependent Claim
23 words
The process as claimed in claim 5, wherein the filler of the component (b) is a solid foaming agent insoluble in hydrocarbon solvents.
Claim 27
Dependent Claim
23 words
The process as claimed in claim 5, wherein the filler of the component (b) has a maximum length of 5 millimeters or less.
Claim 28
Dependent Claim
28 words
The process as claimed in claim 5, wherein the proportion of the filler of the component (b) in the polyethylene composition is at least 0.5 percent by weight.
References Cited (Backward Citations)
US2924593A
Cited
US3161629A
Cited
US2917501A
Cited
GB910814A
Cited
JPS423021Y1
Cited
GB1480530A
Cited
US3950303A
Cited
US3971767A
Cited
DE2608933A1
Cited
US4241112A
Cited
US4404344A
Cited
EP0035242B1
Cited
US4473672A
Cited
EP0069951B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |