Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CH308468Aexternal-prioritypatent/CH500271A/en
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Publication of ES364247A1publicationCriticalpatent/ES364247A1/en
Process for the preparation of dispersions of basic dyes, characterized in that a mechanical processing or grinding of the dye assembly and dispersion medium is carried out in the presence or absence of grinding bodies, which can be separated from the dispersion by sifting or filtering, verifying the grinding in a ball mill, attrition mill or sand mill, at room temperature or with cooling, maintaining a quantitative or dye-like ratio between 1: 9 and 4: 1, preferably between 1: 9 and 1: 1 and in particular between 1: 6 and 1: 2 and, optionally, the dispersion is diluted by the addition of more dispersion medium and by containing a cation-active non-ionic tension, the dispersions remaining with at most 5% water, with viscosity at 20º. From 100 to 250 centipoise and neutral to weakly acid reaction when diluted in water. (Machine-translation by Google Translate, not legally binding)
ES364247A1968-03-011969-02-28Procedure for the preparation of basic color dispersions. (Machine-translation by Google Translate, not legally binding)
ExpiredES364247A1
(en)