Process for the dyeing of thermoplastics in the melt

Details Process for the dyeing of thermoplastics in the melt Process for the dyeing of thermoplastics in the melt

C - Chemistry, Metallurgy

08

K

400/7074

C08K 5/34 (2006.01) C08J 3/20 (2006.01) C08K 5/3417 (2006.01) C08K 5/3447 (2006.01) C09B 57/04 (2006.01)

Patent

CA 1072238

Abstract of the Disclosure PROCESS FOR THE DYEING OF THERMOPLASTICS IN THE MELT Process for the dyeing of thermoplastics in the melt, which process comprises the use of dyestuffs of the formula Image wherein X1 - X4 represents H-atoms or halogen atoms, or one or two of the radicals X1 - X4 represent alkyl, alkoxy, phenyl or phenoxy groups, and those remaining represent H-atoms, R1 and R2 represent radicals of methylene-active compounds, or radicals of the formula =N-A wherein A stands for the radical of an aliphatic, cycloaliphatic, araliphatic aromatic or heterocyclic amine or hydrazine, whereby, provided that R1 and R2 represent radicals of the formula =N-A, one A represents a heterocyclic radical containing N-atoms, optionally together with O- or S-atoms.

249991

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