Patent ID: 9192625
Filing Date: 2015-11-24
Classification: A61K,C08L,D01F,D04H

Abstract:
1. An antimicrobial textile composition having an intercalated and exfoliated morphology prepared by a process comprising the steps of: ball-milling an unmodified nanoclay untreated by modifiers, reducing agents, or antioxidants to generate a ball-milled nanoclay; ultrasonicating the ball-milled nanoclay to form a ball-milled and ultrasonicated nanoclay having an ion exchange capacity of 70-120 milliequivalents per 100 grams; incorporating into the ball-milled and ultrasonicated nanoclay via ion exchange a cationic antimicrobial agent selected from a group consisting of one or more of chlorhexidene acetate and sulphanilamide to form an antimicrobial nanoclay, wherein the cationic antimicrobial agent is 1% to 30% by weight of the ball-milled and ultrasonicated antimicrobial nanoclay; and twin-screw compounding a polymer selected from the group consisting of one or more of nylon, polypropylene, polyurethane, polyester, acrylic, and viscose into the antimicrobial nanoclay to form the antimicrobial textile composition having the intercalated and exfoliated morphology; wherein the combined quantity of the unmodified nanoclay and the cationic antimicrobial agent is 0.75% to 3% by weight of the composition; the composition achieves 100% antimicrobial activity against gram positive bacteria; and the composition retains a 100% antimicrobial activity against gram positive bacteria through 50 washings according to an ISO-2 test method.