ES315103A1 - Procedure for the preparation of optical aclaradores of the estilbenica series. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the preparation of optical aclaradores of the estilbenica series. (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.)
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
Original Assignee
JR Geigy AG
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Publication date
Priority claimed from CH904364Aexternal-prioritypatent/CH424702A/en
Application filed by JR Geigy AGfiledCriticalJR Geigy AG
Publication of ES315103A1publicationCriticalpatent/ES315103A1/en
Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography
(AREA)
Heat Sensitive Colour Forming Recording
(AREA)
Abstract
Process for the preparation of optical brighteners of the stybic series, which is characterized by copying the diazonic compound of 4-amino-2 ', 4'- or -3', 4'-dichloro-stilbene-2-sulfonic acid with a 2 -aminonaphthalene, insulfonated or sulfonated in position 1, and oxidized, by methods already known, the obtained o-aminoazoic dye, in order to convert it into a compound of the formula I ** (See formula) ** where, of X1 and X2, one X means hydrogen, while the other X means chlorine. (Machine-translation by Google Translate, not legally binding)
ES0315103A1964-07-091965-07-08Procedure for the preparation of optical aclaradores of the estilbenica series. (Machine-translation by Google Translate, not legally binding)
ExpiredES315103A1
(en)
Procedure for the obtaining of dialylamide from the 3-chloropiridazon- (6) -1-acetic acid. (Machine-translation by Google Translate, not legally binding)