Process for the manufacture of 1,4-bis(4-phenoxybenzoyl)benzene

Details Process for the manufacture of 1,4-bis(4-phenoxybenzoyl)benzene Process for the manufacture of 1,4-bis(4-phenoxybenzoyl)benzene

1988-03-10

1989-05-02

Reamer, James H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 4546

Patent

active

048270415

ABSTRACT:
A process for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, wehrein diphenyl ether is contacted for about 30-360 minutes at 130.degree.-200.degree. C. with 1,4-benzenedicarbonyl chloride in respective mole ratios of about 15-80:1 in the presence of a fluorocarbon resin carrying pendant sulfonic acid groups, the weight ratio of the resin to 1,4-benzenedicarbonyl chloride being 3:1-1:2; the hot solution is separated from the resin, and the crystalline product is recovered from the solution on cooling. The so obtained 1,4-bis(4-phenoxybenzoyl)-benzene is a high purity material free of ortho-isomer and catalyst contamination and can be used without further purification as one of the starting materials in the preparation of polyetherketones, which are important engineering resins.

REFERENCES:
patent: 3907837 (1975-09-01), Effenberger et al.
patent: 4052401 (1977-10-01), Hughes
patent: 4053522 (1977-10-01), McClure et al.
patent: 4306094 (1981-12-01), Shozda
patent: 4396755 (1983-08-01), Rose
patent: 4423252 (1983-12-01), Maki et al.
patent: 4478956 (1984-10-01), Maki et al.
patent: 4487934 (1984-12-01), Shutske et al.

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