Crockfastness of three polyacrylate and two nitrile rubber pigment-printing binders was demonstrated to be dependent upon mechanical resistance of the pigmented binders to rubbing and adhesion of the binders to fabric. Of the tensile properties of binder films measured, higher 200% modulus correlated best with crockfastness of printed fabrics. With binders of nearly equal modulus, crockfastness was better if adhesion was better.
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