The invention concerns a method for the preparation of chloranil by chlorinating 1 mole of hydroquinone with 4 to about 8 moles of chlorine gas in about 15 to about 37 % by wt. hydrochloric acid at temperatures between about 10 DEG C and the boiling point of the reaction mixture to form tetrachlorohydroquinone, and by oxidizing the tetrachlorohydroquinone by passing a mixture of gaseous elementary chlorine and air or oxygen through the reaction mixture thus obtained at temperatures of about 80 DEG C to the boiling point of the reaction mixture.
申请公布号
DE3924177(A1)
申请公布日期
1991.01.24
申请号
DE19893924177
申请日期
1989.07.21
申请人
HOECHST AG, 6230 FRANKFURT, DE
发明人
SCHUBERT, HANS, DR., 6233 KELKHEIM, DE;PAPENFUHS, THEODOR, DR., 6000 FRANKFURT, DE;ARNDT, OTTO, DR., 6238 KELKHEIM, DE