Nanoparticle-based permanent treatments for textiles
Patent 6607994 Issued on August 19, 2003. Estimated Expiration Date: December 6, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
442/59, COATED OR IMPREGNATED WOVEN, KNIT, OR NONWOVEN FABRIC WHICH IS NOT (A) ASSOCIATED WITH ANOTHER PREFORMED LAYER OR FIBER LAYER OR, (B) WITH RESPECT TO WOVEN AND KNIT, CHARACTERIZED, RESPECTIVELY, BY A PARTICULAR OR DIFFERENTIAL WEAVE OR KNIT, WHEREIN THE COATING OR IMPREGNATION IS NEITHER A FOAMED MATERIAL NOR A FREE METAL OR ALLOY LAYER428/402, Particulate matter (e.g., sphere, flake, etc.)428/402.2, Microcapsule with fluid core (includes liposome)428/402.21, Solid-walled microcapsule from synthetic polymer428/402.24, Microcapsule with solid core (includes liposome)428/403, Coated428/407, Including synthetic resin or polymer442/96, Coating or impregnation provides a fragrance or releases an odor intended to be perceptible to humans442/97, Coating or impregnation is a lubricant or a surface friction reducing agent other than specified as improving the "hand" of the fabric or increasing the softness thereof442/102, Coating or impregnation functions to soften the feel of or improve the "hand" of the fabric442/123, Coating or impregnation functions biologically (e.g., insect repellent, antiseptic, insecticide, bactericide, etc.)442/124, Inhibits mildew442/125, Insect repellent442/132, Radiation reflective442/133, Radiation absorptive442/136, Coating or impregnation provides heat or fire protection442/153Coated or impregnated cellulosic fiber fabric
This invention is directed to preparations useful for the permanent or substantially permanent treatment of textiles and other webs. More particularly, the preparations of the invention comprise an agent or other payload surrounded by or contained within a polymeric encapsulator that is reactive to webs, to give textile-reactive nanoparticles. By "textile-reactive" is meant that the payload nanoparticle will form a chemical covalent bond with the fiber, yarn, fabric, textile, finished goods (including apparel), or other web or substrate to be treated. The polymeric encapsulator of the payload nanoparticle has a surface that includes functional groups for binding or attachment to the fibers of the textiles or other webs to be treated, to provide permanent attachment of the payload to the textiles. Alternatively, the surface of the nanoparticle includes functional groups that can bind to a linker molecule that will in turn bind or attach the nanoparticle to the fiber. This invention is further directed to the fibers, yarns, fabrics, other textiles, or finished goods treated with the textile-reactive nanoparticles. Such textiles and webs exhibit a greatly improved retention or durability of the payload agent and its activity, even after multiple washings.
Other References
PCT International Search Report, dated Nov. 30, 2000, mailed Dec. 13, 2000 for PCT/00US/40428
Nelson, G., Review of Progress in Coloration and Related Topics, 1991, 21: 72-85
December 6, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
