ES205971A3 - A procedure to produce polyaril-methane colorants of the type of rosaniline (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure to produce polyaril-methane colorants of the type of rosaniline (Machine-translation by Google Translate, not legally binding)
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.)
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Wyeth Holdings LLC
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American Cyanamid Co
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Priority to ES205971ApriorityCriticalpatent/ES205971A3/en
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Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General
(AREA)
Abstract
A process for producing polyamino polyarylmethane dyes of the rosaniline type comprising oxidizing a dispersion of leuco triamine triarylmethane in excess of aryl amine by gaseous oxygen in the presence of a catalyst selected from the group consisting of ammonium metavanadate and the reaction product obtained by heating metavanadate sodium and acetic anhydride at a temperature of more than 100º c. (Machine-translation by Google Translate, not legally binding)
ES205971A1952-10-251952-10-25A procedure to produce polyaril-methane colorants of the type of rosaniline (Machine-translation by Google Translate, not legally binding)
ExpiredES205971A3
(en)
Procedure for increasing the affinity of polymers containing nitrile groups with respect to dyes, especially for acid colorants. (Machine-translation by Google Translate, not legally binding)