Antimicrobial polymer resins, fibers, and yarns with phosphorus content
AssigneeAscend Performance Materials Operations LLC
InventorsScott E. Osborn, Wai-shing Yung
Life of this patent
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Abstract
The present disclosure relates to polymer resins, fibers, and yarns with permanent antimicrobial activity, and a method of producing the same. In one embodiment, the antimicrobial polymer resin comprises a polymer having less than 2500 ppm of zinc dispersed within the polymer, less than 1000 ppm of phosphorus, wherein the weight ratio of zinc to phosphorus is at least 1.3:1 or less than 0.64:1.
Claims18
A polyamide resin composition for molded products having permanent antimicrobial properties, the polyamide composition comprising:
- a polyamide selected from the group consisting of PA-4T/41, PA-4T/6I, PA-5T/5I, PA-6, PA-6,6, PA-6,6/6, PA-6,6/6T, PA-6T/61, PA-6T/61/6, PA-61T/6, PA-6T/61/66, PA-6T/MPMDT, PA-6T/66, PA-61/610, PA-10T/612, PA-10T/106, PA-61T/612, PA-61/10T, PA-61/101, PA-9T, PA-10T, PA-12T, PA-10T/101, PA-10T/12, PA-10T/11, PA-6T/9T, PA-61/12T, PA-61/10T/6I, PA-6T/61/6, PA-6T/6I/12, and combinations thereof;
- molding additives comprising impact modifiers, heat stabilizers, lubricants, fillers, chain terminators, or plasticizers, or combinations thereof;
- zinc dispersed within the polyamide;
- less than 1000 ppm of phosphorus;
- wherein the weight ratio of the zinc to the phosphorus is 2:1 to 30:1.
A molded product having permanent antimicrobial properties comprising:
- a polyamide selected from the group consisting of PA-4T/41, PA-4T/61, PA-5T/5I, PA-6, PA-6,6, PA-6,6/6, PA-6,6/6T, PA-6T/61, PA-6T/61/6, PA-61T/6, PA-6T/61/66, PA-6T/MPMDT, PA-6T/66, PA-61/610, PA-10T/612, PA-10T/106, PA-61T/612, PA-61/10T, PA-61/101, PA-9T, PA-10T, PA-12T, PA-101/101, PA-10T/12, PA-10T/11, PA-6T/9T, PA-61/12T, PA-61/10T/6I, PA-6T/61/6, PA-6T/6I/12, and combinations thereof;
- molding additives comprising comprising impact modifiers, heat stabilizers, lubricants, fillers, chain terminators, or plasticizers, or combinations thereof;
- zinc dispersed within the polyamide;
- and less than 1000 ppm of phosphorus;
- wherein the weight ratio of zinc to phosphorus is 2:1 to 30:1.
A process for preparing molded products having permanent antimicrobial properties, the process comprising:
- preparing an aqueous monomer solution;
- adding zinc dispersed within the aqueous monomer solution;
- adding less than 1000 ppm of phosphorus;
- polymerizing the aqueous monomer solution to form a polyamide melt;
- and
- molding the polyamide melt and molding additives to form the molded products,
- wherein the molding additives comprise impact modifiers, heat stabilizers, lubricants, fillers, chain terminators, or plasticizers, or combinations thereof;
- wherein the weight ratio of zinc to phosphorus is:
- 2:1 to 30:1;
- wherein the polyamide is selected from the group consisting of PA-4T/41, PA-4T/6I, PA-51/51, PA-6, PA-6,6, PA-6,6/6, PA-6,6/6T, PA-6T/61, PA-6T/61/6, PA-61/6, PA-6T/61/66, PA-6T/MPMDT, PA-61/66, PA-61/610, PA-10T/612, PA-10T/106, PA-61/612, PA-61/10T, PA-6T/10I, PA-9T, PA-10T, PA-12T, PA-101/101, PA-10T/12, PA-10T/11, PA-61/9T, PA-61/12T, PA-61/10T/6I, PA-6T/61/6, PA-6T/6I/12, and combinations thereof.
Dependencies are inferred from the claim text.