Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Patent
1993-02-23
1994-03-08
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
570204, 570206, 570208, 570210, C07C 2502, C07C 2522
Patent
active
052929752
ABSTRACT:
When the halogen content of polyhalogenated aromatics is decreased by reaction with monohalogenated and/or non-halogenated aromatics in the gas phase, good yields and significantly improved catalyst service lives are achieved if the reaction is carried out in the presence of a catalyst and in the presence of a hydrogen halide.
REFERENCES:
patent: 5157170 (1992-10-01), Mais et al.
Chemical Abstracts, vol. 112, No. 23, Jun. 4, 1990, Front Page & p. 584; Abstract No. 216311f, Kiyonori Shinoda et al., "Transchlorination of Polychlorobenzenes and Benzene into Chlorobenzene".
Chemistry Letters, pp. 2051-2052, 1987; Kiyonori Shinoda, "Transchlorination of o-Dichlorobenzene and Benzene into Chlorobenzene".
Patent Abstracts of Japan, vol. 14, No. 106, Feb. 27, 1990; JP-A-1311032, Dec. 15, 1989, "Transchlorination Process for Aromatic Polychlorinated Compounds", pp. 1-5.
Fiege Helmut
Schrage Heinrich
Bayer Aktiengesellschaft
Lone Werren B.
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