Ripening of 1,4-bis (4-phenoxybenzoyl)benzene

a technology of phenoxybenzoyl benzene and 1,4-bis(4-phenoxybenzoyl)benzene, which is applied in the preparation of carbonyl compounds, organic chemistry, chemistry apparatus and processes, etc., to achieve the effect of improving the filterability and facilitating separation of 1,4-bis(4-phenoxybenzoyl)benzen
US20210155570A1Inactive Publication Date: 2021-05-27ARKEMA FRANCE SA
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
ARKEMA FRANCE SA
Publication Date
2021-05-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: reacting terephthaloyl chloride with diphenyl ether in a reaction solvent and in the presence of a Lewis acid, so as to obtain a product mixture comprising a 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex; putting the product mixture in contact with a protic solvent, so as to obtain a first phase containing the Lewis acid and a second phase containing 1,4-bis(4-phenoxybenzoyl)benzene; heating at least the second phase up to a maximum temperature, followed by cooling the second phase down to a separation temperature; subjecting at least the second phase to a solid / liquid separation step at the separation temperature, so as to recover solid 1,4-bis(4-phenoxybenzoyl)benzene.
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Description

TECHNICAL FIELD

[0001] The present application relates to a method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, as well as a method for manufacturing polyether ketone ketone polymers starting from said 1,4-bis(4-phenoxybenzoyl)benzene.TECHNICAL BACKGROUND

[0002] Polyether ketone ketone (PEKK) polymers have a number of properties which make them useful for applications involving exposure to high temperature or to high mechanical or chemical stress. They are for instance useful in the aerospace industry, in off-shore drilling and in medical devices.

[0003] One known route for manufacturing polyether ketone ketone polymers relies on the use of 1,4-bis(4-phenoxybenzoyl)benzene as a starting material. 1,4-bis(4-phenoxybenzoyl)benzene can be prepared by reacting terephthaloyl chloride and diphenyl ether in the presence of a Lewis acid such as aluminum trichloride.

[0004] In document U.S. Pat. No. 4,816,556 (example 2), 1,4-bis(4-phenoxybenzoyl)benzene is prepared by dissolving terephthaloy...

Claims

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