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. 19, 1981
Filed:
Mar. 07, 1977
Applicant:
Inventor:
Winfried Kruckenberg, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C09B / ; C09B / ;
U.S. Cl.
CPC ...
260205 ; 260148 ; 260149 ; 260186 ; 260206 ; 206207 ; 2062071 ; 2062075 ; 206208 ; 564282 ; 564284 ; 564285 ; 564289 ;
Abstract
Basic azo dyestuffs which are free from sulfonic acid and carboxylic acid groups and correspond to the formula ##STR1## wherein the radical have the below mentioned meaning, water-solubility and drawing speed and are used for dyeing and printing of polymers and copolymers of acrylnitrile, acid-modified polyesters or polyamides, and for dyeing of leather, tanned cotton, polyurethanes, writing liquids, lignin-containing fibres and for coloring of printing pastes.