Cationic polycondensate dye fixing agent and process of preparing the same
AssigneesNICCA U.S.A., Inc., Nicca Chemical Co., Ltd.
InventorsShinichi Morinaga, Kouji Midori
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Abstract
The present invention provides a cationic polycondensate dye fixing agent prepared by reacting (a) a mono- or polyfunctional amine having at least one reactive --NH or --NH.sub.2 group, or a salt thereof, with (b) a polycondensate-forming cyano compound at a temperature of at least about 260.degree. C. The present invention also provides a process of improving the fastness of dyed materials using the cationic polycondensate dye fixing agent of the present invention.
Claims29
A process for the preparation of a cationic polycondensate dye fixing agent for the treatment of dyed materials, said process comprising reacting (a) a polyfunctional amine having at least one reactive --NH or --NH.sub.2 group with (b) ammonium halide, and then further reacting with (c) a polycondensate-forming cyano compound at a temperature of at least about 260.degree. C.
A cationic polycondensate dye fixing agent produced by the process comprising reacting (a) a polyfunctional amine having at least one reactive --NH or --NH.sub.2 group with (b) ammonium halide, and then further reacting with (c) a polycondensate-forming cyano compound selected from the group consisting of cyanamide, dicyandiamide, guanidine, and bisguanidine at a temperature of at least about 260.degree. C.
A cationic polycondensate dye fixing agent comprising a plurality of cyano moieties and a plurality of amine moieties having an intrinsic viscosity at 50.degree. C. above about 0.038 dl/g, and being free of metal or metal salts.
A process of improving the fastness of a dyed material, said process comprising applying a cationic polycondensate dye fixing agent to said dyed material at a temperature of between about 40.degree. C. to about 80.degree. C. for about 10 to 45 minutes;
- wherein said cationic polycondensate dye fixing agent is produced by the process comprising reacting (a) a polyfunctional amine having at least one reactive --NH or --NH.sub.2 group with (b) ammonium halide, and then further reacting with (c) a polycondensate-forming cyano compound selected from the group consisting of cyanamide, dicyandiamide, guanidine, and bisguanidine at a temperature of at least about 260.degree. C.
Dependencies are inferred from the claim text.