The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 1992
Filed:
May. 03, 1990
Karl J Herd, Odenthal, DE;
Hans-Georg Frosch, Cologne, DE;
Hermann Henk, Cologne, DE;
Wolfgang Mullers, Bergisch-Gladbach, DE;
Frank-Michael Stohr, Odenthal, DE;
Bayer Aktiengesellschaft, Leverkusen, DE;
Abstract
A new process for the preparation of substituted 2,4-diamino-6-flurotriazines of the formula ##STR1## in which the substituents have the meanings given in the description, comprises reacting ammonium salts of the formula ##STR2## in an aqueous medium at pH values of about 2.5-10 with 2,4,6-trifluorotriazine in a continuous process. The reaction products can be converted to dyestuffs without isolating the intermediates.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile