Shinichi Morinaga

US Patent:

56327811, May 27, 1997

Filed:

Sep 30, 1994

Appl. No.:

8/315715

Inventors:

Shinichi Morinaga - Simpsonville SC
Kouji Midori - Fukui, JP

Assignee:

NICCA U.S.A., Inc. - Fountain Inn SC
NICCA Chemical Co., Ltd

International Classification:

D06P 508
D06P 139
D06P 360

US Classification:

8442

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.