Nickel salts of iminoheterocyclicamides
Abstract
Abstract HIGHLY COLORED NICKEL SALTS OF CHELATES OF IMINOHETEROCYCLIC CARBOXAMIDS OR CARBOTHIAMIDES SUITABLE AS PIGMENTS ARE DESCRIBED. THE NICKEL SALTS ARE PREPARED BY REACTING A NICKEL HALIDE OR A NICKEL SALT OF A WEAK ACID WITH THE DESIRED IMINOHETEROCYCLIC CARBOXAMIDE OR CARBOTHIAMIDE, AS FOR EXAMPLE, WITH 2-IMINOCOUMARIN-3-CARBOXAMIDE, WHICH IN TURN CAN BE PREFORMED OR FORMED IN SITU BY CONDENSING THE APPROPRIATE ALDEHYDE WITH A CYANOACETAMIDE OR CYANOTHIOACETAMIDE. PIGMENTARY MIXED CHELATES ARE ALSO FORMED IN THE SAME MANNER BY REACTING THE NICKEL SALT WITH A MIXTURE OF THE DESIRED IMINOHETEROCYCLIC CARBOXAMIDE OR CARBOTHIAMIDE AND AT LEAST ONE OTHER CHELATING AGENT SUCH AS, FOR EXAMPLE, DIMETHYLGLYOXIME, 1NITROSO-2-NAPHTHOL, ETC.
Inventors
- 👤 Albert S Matlack
Bibliographic Details
Claims Analysis
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