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:
Jan. 20, 1981
Filed:
Dec. 21, 1978
Peter Loew, Munchenstein, CH;
Walter Lang, Pfeffingen, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
A process for producing solutions of salts of water-soluble carboxylic acids of cationic dyes or optical brighteners, the solutions of cationic dye salts or brighteners salts which are obtained by this process and which are miscible with water in any proportion, and the use of these solutions for preparing dye liquors and printing pastes for dyeing, optical brightening and printing of, in particular, synthetic textile materials, which process comprises reacting the halide of a cationic dye or brighteners, in an aqueous or anhydrous medium, with at least one water-soluble carboxylic acid in the presence of an epoxide compound having a minimum of 13 carbon atoms.