Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1980-09-26
1983-07-19
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568702, 568780, 568751, C07C 3768, C07C 3766
Patent
active
043945260
ABSTRACT:
Para-cresol is separated from a mixture comprising meta-cresol and various other methylated and ethylated phenols by preferentially complexing the para-cresol with one or more anhydrous or dehydrated inorganic salts selected from the group consisting of calcium bromide, lithium bromide, manganese bromide and magnesium chloride. The anhydrous inorganic salt is added to the phenolic mixture in an amount to give a mole ratio of salt to para-cresol in the mixture in the range of about 0.5 mole to one to about 1.5 mole to one. The para-cresol and salt form a complex and the complex is removed from the mixture of methylated and ethylated phenols. Then the complex is decomposed to recover the para-cresol and salt; the recovered salt may be recycled to complex with more para-cresol.
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Sharpless et al., "Journal Organic Chemistry", vol. 40, No. 9, (1975), pp. 1252-1257.
Keane J. Timothy
Koppers Company Inc.
Lone Werren B.
Long Daniel J.
Zeh, Jr. Herbert J.
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