Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1988-05-27
1989-07-25
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568753, C07C 3770, C07C 3768
Patent
active
048515906
ABSTRACT:
2,4-Xylenol can be obtained in high yield and high purity from a crude 2,4-xylenol isomer mixture containing 2,5-xylenol by selectively reacting the 2,5-xylenol with an aldehyde in the presence of an aromatic sulfonic acid, thereby converting the 2,5-xylenol into a xylenol-aldehyde condensate and, subsequently, separating the 2,4-xylenol, e.g., by distillation.
REFERENCES:
patent: 2917487 (1959-12-01), Jones et al.
patent: 4236030 (1980-11-01), Selwitz et al.
patent: 4247719 (1981-01-01), Buck et al.
patent: 4249026 (1981-02-01), Dodd
Furuya Masayuki
Miura Tohru
Nagata Teruyuki
Nakayama Hitoshi
Watanabe Katsuju
Lone Werren B.
Mitsui Toatsu Chemicals Inc.
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