Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1991-02-26
1991-10-01
Chan, Nicky
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
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.
Schissel David N.
Yeager Gary W.
Argo Margaret
Chan Nicky
Davis Jr. James C.
General Electric Company
Pittman William H.
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