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:
May. 02, 1978
Filed:
Jun. 17, 1976
Applicant:
Inventors:
Erich Kramer, Bergisch Gladbach, DT;
Wolf Eckhard Bleck, Leverkusen, DT;
Assignee:
Bayer Aktiengesellschaft, Leverkusen-Bayerwerk, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; D06P / ;
U.S. Cl.
CPC ...
8 85 / ; 8 1 / ; 8 39 / ; 8 41 / ; 8 42 / ; 8 76 ; 8 85 / ; 8 88 ; 8 89 / ; 8 92 ; 8 93 ;
Abstract
Stable, concentrated solutions of anionic dyestuffs are prepared by reacting the alkali metal or ammonium salts of anionic dyestuffs and brighteners, which are usually obtained from the industrial preparation process, in water-soluble organic solvents, optionally in the presence of water, with salts of nitrogen bases which impart hydrophilic properties, in accordance with the reaction equation