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. 21, 2012
Filed:
Jan. 07, 2009
Christian Cremer, Lörrach, DE;
Sophie Marquais-bienewald, Hegenheim, FR;
Olof Wallquist, Bottmingen, CH;
Christian Cremer, Lörrach, DE;
Sophie Marquais-Bienewald, Hegenheim, FR;
Olof Wallquist, Bottmingen, CH;
BASF SE, Ludwigshafen, DE;
Abstract
Disclosed are cationic oligomeric dye, comprising a low molecular weight polyamine comprising the repeating units (1a) or (1b), wherein at least 90% of the polyamine molecules are selected from tetramines, pentamines and hexamines; and R is the residue of a cationic dye, which is covalently bonded, optionally via a linker, to the nitrogen atoms of the polyamine; or hydrogen; wherein the polyamine repeating units (1a) and (1b) comprise at least one carionic dye residue; and n is a number from 3-12. The dyes are distinguished by their depth of shade and their good fastness properties to washing, such as, for example, fastness to light, shampooing and rubbing.