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
Alcan Holdings Switzerland AG
Original Assignee
Ciba Geigy AG
Alusuisse Holdings 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 CH602870Aexternal-prioritypatent/CH529509A/en
Priority claimed from CH642070Aexternal-prioritypatent/CH523973A/en
Application filed by Ciba Geigy AG, Alusuisse Holdings AGfiledCriticalCiba Geigy AG
Publication of ES390737A1publicationCriticalpatent/ES390737A1/en
Process for the treatment of aluminum surfaces, or their alloys, by means of a medium containing water, with a view to the formation of a surface layer of alumina hydrate, making them clearly suitable for varnishing, characterized in that said surfaces are exposed to the action of a gaseous mixture consisting essentially of steam of an organic solvent whose boiling point is greater than 100ยบ c, as well as of water vapor whose weight content in this gas mixture is lower than that which occurs in the azeotropic composition formed between the water and this solvent, the gaseous mixture further comprising an active supplement constituted by a volatile alkaline product under the treatment conditions. (Machine-translation by Google Translate, not legally binding)
ES390737A1970-04-211971-04-29Procedure for the treatment of aluminum surfaces. (Machine-translation by Google Translate, not legally binding)
ExpiredES390737A1
(en)
Procedure to obtain a product that contains a volatile matter that is evaporated in the normal conditions of temperature and pressure. (Machine-translation by Google Translate, not legally binding)
A procedure for the concentration of sea water for the obtaining of crystallized sodium chloride and other similar (Machine-translation by Google Translate, not legally binding)