Nitrosating and diazotizing reagents and reactions

Details Nitrosating and diazotizing reagents and reactions Nitrosating and diazotizing reagents and reactions

1991-02-01

1992-08-04

Cintins, Marianne

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfur containing

562427, 562430, 558412, 558413, C07C31704, C07C31714, C07C32366

Patent

active

051360985

ABSTRACT:
Sulfonic acids are reacted with sodium nitrite to form new compositions specifically nitrosyl sulfonates. The nitrosyl sulfonates are useful in reacting with a dye base to form a diazo composition which can in turn react with a coupling agent to form a diazo dye. The nitrosyl sulfonate can also be used to react with an aromatic composition to nitrosoate an aromatic composition. These reactions are particularly useful in the formation of a dispersed dye because the dye can be formed directly in a nonpolar organic solvent and can be used without purification of the dye product. Particularly useful is the nitrosyl dodecyl benzene sulfonate since the formed product is soluble in nonpolar solvents and all reaction products remain in solution and aid with the dyeing of fabrics.

REFERENCES:
patent: 2432403 (1945-01-01), Felix et al.
patent: 3804896 (1974-04-01), Tincher et al.

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