# US 10,870,666 B2 · Aluminum alloy-containing composition, production method therefor, and trialkyl aluminum production method

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- Number: US 10,870,666 B2
- Document ID: US10870666B2
- Status: Granted
- Kind: B2
- Application number: 16/343,090
- Filed: 2017-10-04
- Published: 2020-02-13
- Granted: 2020-12-22
- Earliest claimed: 2016-10-20
- Assignees: Tosoh Finechem Corporation
- Applicants: Tosoh Finechem Corporation
- Inventors: Hiroshi Matsuo; Yujin Takemoto; Kotaro Sakoda; Toshio Naka
- Web page: https://patentgrep.com/patent/US10870666B2

## CPC

- C07F 5/062: {Al linked exclusively to C}
- Y02P 10/20: Recycling
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A method for producing a particulate aluminum alloy involves pulverizing an aluminum alloy in a hydrocarbon solvent in the presence of an organic aluminum compound. Methods for producing trialkylaluminum involve reacting an aluminum-magnesium alloy with an alkyl halide in the presence of a nitrogen-containing organic compound to obtain a trialkylaluminum-containing reaction product, and reacting an aluminum-magnesium alloy and an alkyl halide. A highly active, low viscosity composition containing the particulate aluminum alloy and a method for producing the particulate aluminum alloy-containing composition are also described.

## Claims

### Claim 1

A method for producing trialkylaluminum, comprising a step (1) of obtaining a trialkylaluminum-containing reaction product by reacting an aluminum-magnesium alloy with an alkyl halide in the presence of a nitrogen-containing organic compound.

### Claim 2 (depends on 1)

The production method according to claim 1, wherein the reaction product from the step (1) contains a dialkylaluminum halide and the production method further contains a step (2) of converting the dialkylaluminum halide to a trialkylaluminum by feeding this reaction product to a reductive dechlorination reaction.

### Claim 3 (depends on 1)

The production method according to claim 1, wherein at least one additive selected from the group consisting of alkylaluminum compounds, iodine, bromine, and halogen compounds is co-present in the step (1).

### Claim 4 (depends on 3)

The production method according to claim 3, wherein the amount of additive addition is in the range equal to or more than 0.01 mol to equal to or less than 0.3 mol per 1 mol of the aluminum in the aluminum-magnesium alloy.

### Claim 5 (depends on 3)

The production method according to claim 3, wherein the alkylaluminum compound is a dialkylaluminum halide.

### Claim 6 (depends on 1)

The production method according to claim 1, wherein the nitrogen-containing organic compound is one or two or more compounds selected from the group consisting of amine compounds, nitrogen atom-containing heterocyclic compounds, and amide compounds.

### Claim 7 (depends on 6)

The production method according to claim 6, wherein the amine compound is a secondary amine compound or a tertiary amine compound.

### Claim 8 (depends on 6)

The production method according to claim 6, wherein the nitrogen atom-containing heterocyclic compound is an unsaturated heterocyclic compound.

### Claim 9 (depends on 1)

The production method according to claim 1, wherein the amount of the nitrogen-containing organic compound is in the range equal to or more than 0.001 mol to equal to or less than 0.2 mol per 1 mol of the aluminum in the aluminum-magnesium alloy.

### Claim 10 (depends on 1)

The production method according to claim 1, wherein the alkyl halide is a methyl halide.

### Claim 11 (depends on 1)

The production method according to claim 1, wherein the alkyl halide is methyl chloride and the trialkylaluminum is trimethylaluminum.