Burlington Industries, Inc.

Raymond Thornton

Bobby L McConnell

Louis A Graham

Carboxy substituted aromatic chromophores are reactively linked to fibers containing alcoholic hydroxyl groups, amino groups or thiol groups, such as cellulosic fibers, with the linkage produced in the presence of a cyanamide compound, such as cyanamide or dicyandiamide.

Reactive dyeing systems using dyes with carboxylic acid groups on

Reactive dyeing systems using dyes with carboxylic acid groups

A novel class of dyes are disclosed of the formula: ##STR1## where D represents a chromophore and R represents a phosphonic or a phosphoric group. These acid groups serve both as water-solubilizing and as reactive groups to bond the dyes covalently to cellulosic substrates.

Growing community of inventors

Lake Placid, NY, United States of America

Raymond Thornton