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
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Priority to ES222005ApriorityCriticalpatent/ES222005A1/en
Publication of ES222005A1publicationCriticalpatent/ES222005A1/en
Process for the preparation of vat dyes, by treatment of the materials obtained starting from 6, bz-l-di- (alpha-anthraquinonylamino) -benzantrones, by alkaline condensation with aluminum chloride, characterized in that the treatment with aluminum chloride is carried out out with addition of chlorosulfonic acid. (Machine-translation by Google Translate, not legally binding)
ES222005A1955-05-251955-05-25A procedure for the preparation of tina colorants (Machine-translation by Google Translate, not legally binding)
ExpiredES222005A1
(en)
A chemical procedure for obtaining solutions of chlorine rubber, starting from natural rubber (Machine-translation by Google Translate, not legally binding)
A procedure for obtaining a condensation compound from three molecules of sulfatizool and three of formaldehyde (Machine-translation by Google Translate, not legally binding)