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US4294947A
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Process for the production of powdery, thermoplastic copolymers from ethylene and butene-(1)
Assignee: VESTOLEN-GMBH
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Filing: 1979-11-01
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Granted: 1981-10-13
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Expires: 1999-11-01
Abstract
Abstract A process for the production of a powdery, thermoplastic copolymer of ethylene and butene-(1) having a density of up to about 0.930 g/cm 3 which comprises copolymerizing a mixture of ethylene and butene-(1) at 50°-95° C. and 10-100 bar in the presence of a catalyst which comprises (1) the reaction product of a chlorine and/or alkoxy-containing vanadyl (V) compound and an organic aluminum compound selected from the group consisting of ethyl aluminum dichloride, diethyl aluminum chloride, isobutyl aluminum dichloride, diisobutyl aluminum chloride, and mixtures thereof, and (2) an aluminum alkyl activating compound therefor, selected from the group consisting of aluminum trialkyls, alkyl aluminum sesquichloride, alkyl aluminum dichloride, and mixtures thereof, wherein the polymerization reaction is carried out in a solvent which comprises liquid butene-(1).
Inventors
- 👤 Klaus Doerk
- 👤 Klaus Koch
- 👤 Horst Banke
- 👤 Bernhard Toben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:31
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/14; C08F210/16; Y; Y10; Y10S; Y10S526/00; Y10S526/903; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
124 words
A process for the production of a copolymer of ethylene and butene-(1) which comprises: copolymerizing a mixture of ethylene and butene-(1) at 50°-95° C. and 10-100 bar in the presence of a catalyst which comprises (1) the reaction product of a chlorine and/or alkoxy-containing vanadyl (V) compound and an organic aluminum compound selected from the group consisting of ethylaluminum dichloride, diethylaluminum chloride, isobutylaluminum dichloride, diisobutylaluminum chloride and mixtures thereof, and (2) an aluminum alkyl activating compound therefor selected from the group consisting of aluminum trialkyls, alkyl aluminum sesquichloride, alkyl aluminum dichloride, and mixtures thereof; wherein the polymerization reaction is carried out in a solvent which comprises liquid butene-(1); thereby obtaining a fluid powdery copolymer having a density up to about 0.930 g/cm 3 .
Claim 2
Dependent Claim
124 words
A process for the production of a copolymer of ethylene and butene-(1) which comprises: copolymerizing a mixture of ethylene and butene-(1) at 50°-95° C. and 10-100 bar in the presence of a catalyst which comprises (1) the reaction product of a chlorine and/or alkoxy-containing vanadyl (V) compound and an organic aluminum compound selected from the group consisting of ethylaluminum dichloride, diethylaluminum chloride, isobutylaluminum dichloride, diisobutylaluminum chloride and mixtures thereof, and (2) an aluminum alkyl activating compound therefor selected from the group consisting of aluminum trialkyls, alkyl aluminum sesquichloride, alkyl aluminum dichloride, and mixtures thereof; wherein the polymerization reaction is carried out in a solvent which comprises liquid butene-(1); thereby obtaining a fluid powdery copolymer having a density up to about 0.930 g/cm 3 .
Claim 3
Dependent Claim
19 words
The process of claim 1, wherein the density of said copolymer is up to about 0.900 g/cm 3 .
Claim 4
Dependent Claim
19 words
The process of claim 1, wherein the mean grain diameter of said copolymer is up to about 1000 μm.
Claim 5
Dependent Claim
14 words
The process of claim 1, wherein the pressure of said copolymerization is 20-60 bar.
Claim 6
Dependent Claim
13 words
The process of claim 1, wherein said copolymerization reaction is a continuous process.
Claim 7
Dependent Claim
12 words
The process of claim 1, wherein said copolymerization is a discontinuous process.
Claim 8
Dependent Claim
35 words
The process of claim 1, wherein said vanadyl (V) compound is the reaction product of vanadyl (V) chloride and vanadyl (V) alcoholate in a mole ratio of 1 to 2 up to 2 to 1.
Claim 9
Dependent Claim
34 words
The process of claim 1, wherein said vanadyl (V) compound is the reaction product of vanadyl (V) chloride with an alcohol in a mole ratio of 1 to 2 up to 1 to 1.
Claim 10
Dependent Claim
18 words
The process of claim 8, wherein said alcohol is selected from the group consisting of ethanol, propanol-(1), butanol-(1).
Claim 11
Dependent Claim
35 words
The process of claim 1, wherein said component (1) of said catalyst is prepared so that the molar ratio of organoaluminum compound to vanadium (V) compound is 1 to 1 up to 3 to 1.
Claim 12
Dependent Claim
40 words
The process of claim 1, wherein the reaction between said organoaluminum compound and said vanadium (V) compound to form said component (1) of said catalyst is carried out with a specific agitation output of 0.1 to 20,000 watts/m 3 .
Claim 13
Dependent Claim
13 words
The process of claim 11, wherein said output is 1-5000 watts/m 3 .
Claim 14
Dependent Claim
30 words
The process of claim 1, wherein said aluminum activating compound (2) is a trialkyl aluminum of the formula AlR 3 wherein R is an alkyl radical having 2-8 carbon atoms.
Claim 15
Dependent Claim
14 words
The process of claim 1, wherein said activating aluminum compound (2) is ethylaluminum sesquichloride.
Claim 16
Dependent Claim
14 words
The process of claim 1, wherein said activating aluminum compound (2) is ethylaluminum dichloride.
Claim 17
Dependent Claim
24 words
The process of claim 1, wherein said copolymerization solvent comprises butene-(1) in admixture with inert, saturated or unsaturated C 4 hydrocarbons or mixtures thereof.
Claim 18
Dependent Claim
22 words
The process of claim 16, wherein said solvent comprises a C 4 -cut containing trans- and cis-butene (2), isobutene, n-butane and isobutane.
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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |