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:
Jul. 09, 1996
Filed:
Nov. 29, 1994
Winfried Mennicke, Leverkusen, DE;
Karin Hassenruck, Dusseldorf, DE;
Bayer Aktiengesellschaft, Leverkusen, DE;
Abstract
The new polymeric dyestuffs which are obtainable by reaction of A) Polyamidoamines having an average molecular weight, determined as the weight-average, of 260 to 10,000, which in turn are obtainable by reaction of aliphatic polyamines (I) which contain at least two primary amino groups and at least one secondary amino group, if appropriate as a mixture with diamines (II), with dicarboxylic acids (.alpha.), with the proviso that the molar ratio of the sum of primary and secondary amino groups contained in (I) and if appropriate (II) to the carboxyl groups in (.alpha.)>1, and is preferably 1.05 to 3, with B) a dyestuff which contains, per molecule, at least one group which is reactive towards primary and secondary amino groups, the molar ratio of the sum of primary and secondary amino groups contained in A) to B) being 1 to 15, preferably 1 to 10, are outstandingly suitable for dyeing and printing materials containing cellulose groups and amide groups and as recording liquids for ink jet recording systems.