Procedure for the application of dye fixing agents to a polyamide fiber with the addition of a controlled fixing agent.

摘要

A PROCESS TO INCREASE THE RAPIDITY OF WASHING OF A FIBROUS ARTICLE CONTAINING POLYAMIDE FIBERS DYED WITH AN ANIONIC DYE BASED ON TREATING IT WITH AN ANIONIC DYE FIXING AGENT. THE PROCESS CONSISTS OF DIPPING THE ARTICLE IN A LIQUID BATH OF WELL A WATER-BASED SOLVENT OR WELL NON-AQUEOUS FOR THE FIXING AGENT AND HEATING IT TO A TEMPERATURE AT LEAST EQUAL TO THE TRANSITION TEMPERATURE OF FIBER DYEING. THE FIXING AGENT IS ADDED TO THE BATHROOM SO THAT THE ADDITION SPEED OF THE FIXING AGENT TO THE BATHROOM IS THE PRIMARY CONTROL OVER THE FIXING AGENT SPEED OF THE FIXING AGENT IN THE FIRST STAGES OF POST-TREATMENT. IN THE LAST STAGES, THE FIXING AGENT ADDITION SPEED CONTROLLES THE CONCENTRATION IN THE BATHROOM, WHICH REDUCES THE PROPENSION OF THE FIXING AGENT TO AGGLOMERATE WHEN LEAVING THE BATHROOM.