Patent · US Expired

Process for the preparation of 2-arylamino-4,6-dichloro-s-triazines

US4683308A · kind A · utility

1Cited by

6References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Andreas Gunther · Cologne, DE
James R. Malone · Dormagen, DE
Manfred Lenthe · Odenthal, DE
Hans-Walter Hohl · Cologne, DE

Key dates

Filing date	Jan 21, 1986
Grant date	Jul 28, 1987
Priority date	—
Expiry date	Jan 21, 2006

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD06M13/313
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

In the preparation of a 2-arylamino-4,6-dichloro-s-triazine of the formula ##STR1## in which R.sup.1 is an optionally substituted aryl radical, and PA0 R.sup.2 is hydrogen or alkyl, by reacting cyanuric chloride of the formula ##STR2## with a virtually water-insoluble arylamine of the formula ##STR3## at a temperature between 0.degree. and 100.degree. C., the improvement which comprises effecting the reaction in water at an acid pH in the presence of a virtually water-insoluble organic solvent. The resulting aqueous phase contains the triazine in such high purity and concentration that it can be used without further purification. The organic solvent can be recycled.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.