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US4325840A Expired / Lapsed US ⏱️ 0.0 years remaining

Organomagnesium complexes

Assignee: Texas Alkyls Inc
•
Filing: 1979-11-30
•
Granted: 1982-04-20
•
Expires: 1999-11-30
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Abstract

Abstract Organomagnesium complexes, which have the formula: (R'.sub.2 Mg).sub.m ·(RM).sub.n wherein RM is an organozinc or organoboron compound, R' is a primary alkyl or aryl group, and having an m:n ratio of about 1 or greater, are disclosed. These complexes are prepared by reacting magnesium with an organohalide selected from primary alkyl halides or aryl halides in the presence of a hydrocarbon solvent and subsequently adding an organozinc or organoboron compound. Alternately, the organozinc or organoboron compound can be generated in situ by adding a zinc or boron salt which is alkylated by the magnesium alkyl. The organozinc and organoboron compounds function as solubilizing agents for organomagnesium compounds which are normally only slightly soluble or insoluble in hydrocarbon media. These complexes are characterized by very low halide content, lack of ether contamination, magnesium to metal ratios of from about 1:1 to about 20:1, and hydrocarbon solubility. Even higher ratios are conceivably obtainable. The complexes are useful as co-catalysts in combination with conventional Zeigler catalysts for polymerizing olefins, diolefins and olefin oxides, and as a source of ether-free diorganomagnesium compounds.

Inventors

  • 👤 Dennis B. Malpass

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 02:01
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C07; C07F; C07F3/00; C07F3/02; C07F3/06; C07F5/00; C07F5/02; C08F10/00

Claims Analysis

Total Claims: 15
Claim 1
Independent Claim 81 words
A hydrocarbon soluble organomagnesium complex having the formula (R'.sub.2 Mg).sub.m.(RM).sub.n wherein RM is an organozinc compound selected from the group consisting of dialkylzincs, alkylzinc halides, or mixtures thereof, the alkyl portion of which R represents a primary, secondary or tertiary alkyl group, R' is selected from the group consisting of primary alkyl containing from 1 to 10 carbon atoms, and phenyl and mixtures thereof, and m and n are numbers such that the ratio of m/n is from 1 to 20.
Claim 2
Dependent Claim 81 words
A hydrocarbon soluble organomagnesium complex having the formula (R'.sub.2 Mg).sub.m.(RM).sub.n wherein RM is an organozinc compound selected from the group consisting of dialkylzincs, alkylzinc halides, or mixtures thereof, the alkyl portion of which R represents a primary, secondary or tertiary alkyl group, R' is selected from the group consisting of primary alkyl containing from 1 to 10 carbon atoms, and phenyl and mixtures thereof, and m and n are numbers such that the ratio of m/n is from 1 to 20.
Claim 3
Dependent Claim 17 words
The complex of claim 1 wherein the ratio of m/n is from about 1 to about 10.
Claim 4
Dependent Claim 20 words
The complex of claim 1 wherein R' is selected from the group consisting of methyl, ethyl, n-propyl, n-butyl, and n-amyl.
Claim 5
Dependent Claim 15 words
The complex of claim 1 where R is selected from C 1 -C 4 alkyl.
Claim 6
Dependent Claim 90 words
An organomagnesium complex solution comprising: (a) hydrocarbon solvent and dissolved therein (b) a complex having the formula: (R'.sub.2 Mg).sub.m.(RM).sub.n wherein RM is an organozinc compound selected from the group consisting of dialkylzincs, alkylzinc halides, or mixtures thereof, the alkyl portion of which R represents a primary, secondary or tertiary alkyl group, R' is selected from the group consisting of primary alkyl containing from 1 to 10 carbon atoms, and phenyl and mixtures thereof, and m and n are numbers such that the ratio of m/n is from 1 to 20.
Claim 7
Dependent Claim 90 words
An organomagnesium complex solution comprising: (a) hydrocarbon solvent and dissolved therein (b) a complex having the formula: (R'.sub.2 Mg).sub.m.(RM).sub.n wherein RM is an organozinc compound selected from the group consisting of dialkylzincs, alkylzinc halides, or mixtures thereof, the alkyl portion of which R represents a primary, secondary or tertiary alkyl group, R' is selected from the group consisting of primary alkyl containing from 1 to 10 carbon atoms, and phenyl and mixtures thereof, and m and n are numbers such that the ratio of m/n is from 1 to 20.
Claim 8
Dependent Claim 34 words
The complex of claim 3 wherein R is selected from the group consisting of C 1 -C 4 alkyl, and R is selected from the group consisting of methyl, ethyl, n-propyl, n-butyl and n-amyl.
Claim 9
Dependent Claim 20 words
The complex of claim 6 wherein the hydrocarbon is selected from the group consisting of cyclohexane, n-hexane, n-heptane and benzene.
Claim 10
Dependent Claim 9 words
The complex of claim 1 wherein R' is n-butyl.
Claim 11
Dependent Claim 14 words
The complex of claim 1 wherein R' is n-butyl and RM is diethyl zinc.
Claim 12
Dependent Claim 14 words
The complex of claim 1 wherein R' is n-butyl and RM is di-isobutyl zinc.
Claim 13
Dependent Claim 9 words
The solution of claim 5 wherein R' is n-butyl.
Claim 14
Dependent Claim 14 words
The solution of claim 5 wherein R' is n-butyl and RM is diethyl zinc.
Claim 15
Dependent Claim 14 words
The solution of claim 5 wherein R' is n-butyl and RM is di-isobutyl zinc.

References Cited (Backward Citations)

US3264360A Cited
US3444102A Cited
US3737393A Cited
US3989878A Cited
US4213880A Cited
US4189553A Cited
US4133824A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-04-19 1985-10-19 1986-04-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-04-19 1989-10-19 1990-04-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-04-19 1993-10-19 1994-04-20 $7700.00 Window Closed / Lapsed

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