US PATENT SUBCLASS 8 / 900
BASIC EMULSIFIERS FOR DYEING

Current as of: June, 1999
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8 /   HD   BLEACHING AND DYEING; FLUID TREATMENT AND CHEMICAL MODIFICATION OF TEXTILES AND FIBERS

900BASIC EMULSIFIERS FOR DYEING {1}
901  DF  .~> Quaternary ammonium salts

DEFINITION

Classification: 8/900

BASIC EMULSIFIERS FOR DYEING:

Basic emulsifiers are surface active agents which will neutralize acids and precipitate acid dyes to form solvent dyes or turn indicator paper to the appropriate color for an

alkaline reagent.