Hydroxy-terminated arylene ethers, and method for making

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

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568631, 568632, C07C 4323, C07C 4321

Patent

active

050535552

ABSTRACT:
A method is provided for making certain hydroxy-terminated arylene ethers useful as spacers in liquid crystalline polyesters. There is initially formed a dicarbonyl adduct from a dihydroxyaromatic compound, such as hydroquinone and a haloarylcarbonyl compound. The adduct formed is oxidized to the corresponding diester. Hydrolysis of the diester provides the hydroxy-terminated arylene ether.

REFERENCES:
patent: 3544638 (1970-12-01), Pulkkinen
patent: 4677185 (1987-06-01), Heitz et al.
patent: 4705887 (1987-11-01), Crivello
patent: 4873371 (1989-10-01), Yeager et al.

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