Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2943329A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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Publication date
Application filed by IG Farbenindustrie AGfiledCriticalIG Farbenindustrie AG
Priority to GB2943329ApriorityCriticalpatent/GB333783A/en
Publication of GB333783ApublicationCriticalpatent/GB333783A/en
333,783. Groves, W. W., (I. G. Farbenindustrie Akt.-Ges.). Sept. 28, 1929. m-Arylamino phenol carboxylic acids are made by treating a dry alkali salt of a m-arylamino phenol with carbon dioxide, at a raised temperature and pressure. The m-arylamino phenols-in which the aryl group may contain as substituents halogens, methyl or methoxy groups-are prepared by condensing resorcinol with arylamines. The products from the following arylamines are specified : Aniline; o-, m-, and p-toluidine; o- and p-anisidine; m- and p-xylidine; 2-methyl-anisidine; p-aminodiphenyl ether; o-, m- and pchloraniline; 5-chloro-2-toluidine; 4-chloro-2-toluidine; 6-chloro-3-toluidine; 2-chloro-4-toluidine; 2 : 4-dichloraniline; 3: 4-dichloraniline; 4: 5-dichloraniline. Specification 12191/89 is referred to.
GB2943329A1929-09-281929-09-28Manufacture of arylamino-phenol-carboxylic acids
ExpiredGB333783A
(en)
Process for the preparation of aromatic, colorless, water-soluble, asymmetric ureas or thioureas containing at least one trifluoromethyl group and one sulfonic acid group.