公开(公告)号：GB1244767A

公开(公告)日：1971-09-02

申请号：GB75971

申请日：1968-08-26

Applicant: IBM

Inventor： CLECAK NICHOLAS JEFFRIES ,  COX ROBERT JAMES ,  SOLAR SAMUEL LOUIS ,  WURSTER HERBERT KLAUS

IPC: C07D213/73 ,  C07D513/04 ,  C07D513/14 ,  C09B35/34 ,  G03G5/06

Abstract: 1,244,767. Methin, azamethin and azo dyes. INTERNATIONAL BUSINESS MACHINES CORP. 26 Aug., 1968 [18 Sept., 1967], No. 759/71 Divided out of 1,244,764. Heading C4P. [Also in Division C2] Methine, azamethine and azo dyes are of formulµ- (in which R is halogen or 1-4 C alkyl or alkoxy; R 2 and R 3 are both R 5 -(CH = CH) n -CH = N-, R 5 -(CH=CH) m - or R 5 -N=NR 5 is C 6 H 5 - or p-(CH 3 ) 2 N-C 6 H 4 -; n is 0-3, m is 1-4). The methine and azamethine dyes are prepared by condensing an aldehyde with a compound in which R 2 and R 3 are NH 2 or CH 3 (see Division C2). The azo dyes are prepared by reacting N,N-dimethylaniline with the diazotization product of a compound in which R 2 and R 3 are NH 2 .

公开(公告)号：GB1244766A

公开(公告)日：1971-09-02

申请号：GB75871

申请日：1968-08-26

Applicant: IBM

Inventor： CLECAK NICHOLAS JEFFRIES ,  COX ROBERT JAMES ,  SOLAR SAMUEL LOUIS ,  WURSTER HERBERT KLAUS

IPC: C07D513/04 ,  G03G5/06

Abstract: 1,244,766. Bisbenzothiazoles. INTERNATIONAL BUSINESS MACHINES CORP. 26 Aug., 1968 [18 Sept., 1967], No. 758/71. Heading C2C. Bisbenzothiazoles of the general formula (wherein R is hydrogen or a lower alkyl group of from 1 to 4 carbon atoms) may be prepared by treating a p - phenylene bisthiourea with bromine and chloroform, and basifying the product. 2,5 - Dimethyl - 1,4 - phenylene bisthiourea is prepared from 2,5 - dimethyl - p - phenylenediamine dihydrochloride and aqueous ammonium thiocyanate.