US4004071A
Expired / Lapsed
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Process for the polymerization of ethylene
Assignee: Asahi Kasei Corp
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Filing: 1975-04-17
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Granted: 1977-01-18
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Expires: 1995-04-17
Abstract
Abstract Polyethylene or copolymers of ethylene with another α-olefin can be produced by the use of a novel polymerization catalyst obtained by using, in combination, (A) a specified, hydrocarbon-insoluble solid component prepared by reacting (i) a specific, hydrocarbon-soluble organoaluminum-magnesium complex (Al n Mg m R n (3 - .sub.α) 1 -R 2m 2 H n , wherein R 1 and R 2 are hydrocarbon radicals) with (ii) a titanium or vanadium compound containing halogen atom(s), and (B) an organoaluminum compound. This catalyst exhibits a surprisingly high activity per the unit amount of the solid component.
Inventors
- 👤 Itsuho Aishima
- 👤 Hisaya Sakurai
- 👤 Yukichi Takashi
- 👤 Hideo Morita
- 👤 Tadashi Ikegami
- 👤 Toshio Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:09
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
138 words
A method for polymerizing ethylene or of ethylene and other olefin which comprises polymerizing said ethylene or a mixture of ethylene and other olefin with a catalyst obtained by reacting (A) a hydrocarbon-insoluble reaction product formed by reacting (i) a hydrocarbon-soluble complex containing Al and Mg, represented by the general formula Al.sub.n Mg.sub.m R.sup.1.sub.n(3.sub.-.sub.α) R.sup.2.sub.2m H.sub.n.sub.α wherein R 1 and R 2 are same or different hydrocarbon radicals having 1 to 10 carbon atoms; n and m are numbers each greater than 0; m/n is in the range of 0.5-10; and α is 0 or 1, with (ii) at least one compound selected from the group consisting of titanium compounds and vanadium compounds both containing at least one halogen atom, with (B) a trialkylaluminum or a dialkylaluminum hydride wherein the alkyl radicals have 1 to 20 carbon atoms.
Claim 2
Independent Claim
138 words
A method for polymerizing ethylene or of ethylene and other olefin which comprises polymerizing said ethylene or a mixture of ethylene and other olefin with a catalyst obtained by reacting (A) a hydrocarbon-insoluble reaction product formed by reacting (i) a hydrocarbon-soluble complex containing Al and Mg, represented by the general formula Al.sub.n Mg.sub.m R.sup.1.sub.n(3.sub.-.sub.α) R.sup.2.sub.2m H.sub.n.sub.α wherein R 1 and R 2 are same or different hydrocarbon radicals having 1 to 10 carbon atoms; n and m are numbers each greater than 0; m/n is in the range of 0.5-10; and α is 0 or 1, with (ii) at least one compound selected from the group consisting of titanium compounds and vanadium compounds both containing at least one halogen atom, with (B) a trialkylaluminum or a dialkylaluminum hydride wherein the alkyl radicals have 1 to 20 carbon atoms.
Claim 3
Dependent Claim
14 words
A method according to claim 1 wherein m/n is in the range of 1-10.
Claim 4
Dependent Claim
10 words
A method according to claim 1 wherein α is 1.
Claim 5
Dependent Claim
18 words
A method according to claim 1 wherein α is 1 and m/n is in the range of 1-10.
Claim 6
Dependent Claim
18 words
A method according to claim 1 wherein α is 1 and m/n is in the range of 2-8.
Claim 7
Dependent Claim
17 words
A method according to claim 1 wherein R 1 and R 2 each has 2-6 carbon atoms.
Claim 8
Dependent Claim
37 words
A method according to claim 1 wherein the compound of titanium or vanadium is selected from the group consisting of titanium tetrachloride, monoethoxytitanium trichloride, monopropoxytitanium trichloride, monobutoxytitanium trichloride, vanadium tetrachloride, vanadyl trichloride and mixtures of the foregoing.
Claim 9
Dependent Claim
31 words
A method according to claim 1 wherein the reaction of said organoaluminum-magnesium complex with the compound of titanium or vanadium is carried out at a temperature of 20° C or lower.
Claim 10
Dependent Claim
33 words
A method according to claim 1 wherein the reaction of said organoaluminum-magnesium complex with the compound of titanium or vanadium is carried out by simultaneously adding both the reactants to a reaction zone.
Claim 11
Dependent Claim
25 words
A method according to claim 1 wherein 0.2-5 mols of said organoaluminum-magnesium complex are reacted with one mol of the compound of titanium or vanadium.
Claim 12
Dependent Claim
24 words
A method according to claim 1 wherein 1-3,000 m mols of said organoaluminum compound are used per one gram of said organoaluminum-magnesium complex (i).
Claim 13
Dependent Claim
26 words
A method according to claim 1 including the further step of adding a halogenated hydrocarbon to the reaction product of (A) and (B) prior to polymerization.
Claim 14
Dependent Claim
32 words
A method according to claim 1 wherein the reaction product of (i) and (ii) is reacted with a halogenated compound of aluminum, silicon, tin, titanium or vanadium prior to reaction with (B).
Claim 15
Dependent Claim
123 words
A polymerization catalyst useful for polymerization or copolymerization of ethylene obtained by reacting (A) a hydrocarbon-insoluble reaction product formed by reacting (i) a hydrocarbon soluble complex containing Al and Mg, represented by the general formulas Al.sub.n Mg.sub.m R.sup.1.sub.n(3.sub.-.sub.α) R.sup.2.sub.2m H.sub.n.sub.α wherein R 1 and R 2 are the same or different hydrocarbon radicals having 1 to 10 carbon atoms; n and m are numbers each greater than 0; m/n is in the range of 0.5-10; and α is 0 or 1, with (ii) at least one compound selected from the group consisting of titanium compounds and vanadium compounds both containing at least one halogen atom, with (B) a trialkylaluminum or a dialkylaluminum hydride wherein the alkyl radicals have 1 to 20 carbon atoms.
Claim 16
Dependent Claim
123 words
A polymerization catalyst useful for polymerization or copolymerization of ethylene obtained by reacting (A) a hydrocarbon-insoluble reaction product formed by reacting (i) a hydrocarbon soluble complex containing Al and Mg, represented by the general formulas Al.sub.n Mg.sub.m R.sup.1.sub.n(3.sub.-.sub.α) R.sup.2.sub.2m H.sub.n.sub.α wherein R 1 and R 2 are the same or different hydrocarbon radicals having 1 to 10 carbon atoms; n and m are numbers each greater than 0; m/n is in the range of 0.5-10; and α is 0 or 1, with (ii) at least one compound selected from the group consisting of titanium compounds and vanadium compounds both containing at least one halogen atom, with (B) a trialkylaluminum or a dialkylaluminum hydride wherein the alkyl radicals have 1 to 20 carbon atoms.
References Cited (Backward Citations)
US3737393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |