| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 07.99 |
| USES | Coloring Protein-based fibers & cellulose based textile materials |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
- Prepg mixt. comprising triphenylmethane (I) dye & oxida tion prodts. by reacting methylenedianiline, aniline, an oxida tion catalyst & an oxidant - Separating said oxidation prodts from said (I) dye to produ ce an aq. soln of oxidation prodts - Treat. said soln with basic compd - Separating unreacted aniline from said soln of oxidation prodts to form mixt. of oxidation prodts & - Sulfonating said mixt. to form dye compn |
| PATENT PHOTOCOPY | Available on request |
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