Method of enhancing the dyeability of vinylidene cyanide interpolymer fibers with organic amines and products resulting therefrom

Claim 1

THE PROCESS FOR ENHANCING THE DYEABILITY OF SYNTHETIC INTERPOLYMER FIBERS CONSISTING OF 50 MOL PERCENT VINYLIDENE CYANIDE AND ONE OTHER OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH SELECTED FROM THE GROUP CONSISTING OF VINYL ACETATE AND VINYLIDENE CHLORIDE, WHICH CONSISTS ESSENTIALLY OF TREATING SAID FIBERS WITH A 0.25 WEIGHT PERCENT TO 25.0 WEIGHT PERCENT AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF AN AMINE SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE PRIMARY ALKYL AMINES CONTAINING 1 TO 4 CARBON ATOMS, WATER-SOLUBLE PRIMARY ALKYLENE DIAMINES CONTAINING 2 TO 8 CARBON ATOMS, WATER-SOLUBLE ETHYLENE POLYAMINES CONTAINING 2 TO 5 ETHYLENE (-CH2CH2-) GROUPS AND WATER-SOLUBLE SECONDARY HETEROCYCLIC AMINES SELECTED FROM THE GROUP CONSISTING OF PIPERIDINE, PIPERAZINE, AND MORPHOLINE FOR A TIME AND AT A TEMPERATURE SUFFICIENT FOR THE AMINE TO REACT WITH THE CYANO GROUPS IN THE VINYLIDENE CYANIDE INTERPOLYMER STRUCTURE TO AN EXTENT THAT IS EQUIVALENT TO SAID REACTION AT THE CYANO GROUPS OF 10 TO 15 WEIGHT PERCENT AQUEOUS SOLUTIONS CONSISTING ESSENTIALLY OF ETHYLENE DIAMINE REACTED THEREWITH FOR FIVE TO NINETY MINUTES AT 100*C. TO 120*C.