Process for the manufacture of 1,4-bis(4-phenoxybenzoyl)benzene with a perfluorosulfonyl resin catalyst
US4827041A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1988 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Mar 10, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/46
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.