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, 1978
Filed:
Jun. 30, 1976
Applicant:
Inventors:
Roger Lacroix, Huningue, FR;
Roland Haberli, Wurenlingen, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ;
U.S. Cl.
CPC ...
8 41 / ; 8-7 ; 8 93 ; 260175 ;
Abstract
There is described a stable concentrated liquid preparation of a paper dye of the disazo class, which preparation contains 20 to 40 per cent by weight of the dye of the formula ##STR1## optionally in the form of an alkali salt, especially of the sodium salt, dissolved in 10 to 30 per cent by weight of water and 40 to 60 per cent by weight of a mono-, di-, tri- or tetraalkylene glycol and the use of this preparation for the dyeing and printing of paper, semi-cardboard and cardboard.