Dye receptive blend of a synthetic hydrophobic fiber-forming polymer and a linear polyacrylic anhydride and method of preparing same

Claim 1

THE DYE RECEPTIVE COMPOSITION COMPRISING A POLYBLEND OF FROM ABOUT 70 TO 95% BY WEIGHT OF A SYNTHETIC HYDROPHOBIC FIBER-FORMING POLYMER SELECTED FROM THE GROUP CONSISTING OF A COPOLYMER OF VINYLIDENE CYANIDE AND A VINYL ESTER, A POLYALKYLENE TEREPHTHALATE, A MIXED POLYALKYLENE TEREPHTHALATE-ISOPHTHALATE, A POLYMERIC AMIDE RESULTING FROM THE CONDENSATION OF A DIBASIC ALIPHATIC ACID AND AN ALIPHATIC DIAMINE, A POLYMERIC AMIDE RESULTING FROM THE CONDENSATION-POLYMERIZATION OF A LACTAM, POLYACRYLONITRILE AND A COPOLYMER OF ACRYLONITRILE AND VINYL ACETATE WITH FROM ABOUT 5 TO 30% BY WEIGHT OF A HYDROPHILIC POLYMER SELECTED FROM THE GROUP CONSISTING OF LINEAR POLYACRYLIC ANHYDRIDE AND THE PARTIAL TERTIARY AMINO ALKYL ESTER OF LINEAR POLYACRYLIC ANHYDRIDE RESULTING FROM THE PARTIAL ESTERIFICATION OF LINEAR POLYACRYLIC ANHYDRIDE WITH FROM 20 TO 100 MOL PERCENT BASED ON THE ANHYDRIDE GROUPS OF AN ALCOHOL CONFORMING TO THE STRUCTURE