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Methods of Enhancing Dyeability of Polymers

詳細技術說明

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*Abstract

The invention is based on the discovery that the dyeability of polymers, such as polyolefins, can be significantly enhanced by incorporating into the polymers a nanomaterial such as a nanoclay, nanosilica, metal oxide (e.g., zinc oxide, silver oxide, calcium oxide, platinum oxide), zeolite, or nanoparticles of polymers (e.g., polysiloxanes). The technology can produce a dyeable polypropylene by using nanoclay that is surface modified with cationic surfactants. The nanoclay is evenly distributed within the polypropylene matrix and provides desired dye affinity in the polymer system. The nanoclaysare introduced to the polypropylene matrix in a melting or dissolving process with a combination of heat and/or organic solvent. This technology can easily be adapted to different processes, using mechanical blending, ultrasonication and/or screw mixing. This low cost process technology can be used to produce polypropylene fibers and fabrics with acid and disperse dyeability properties. These new dyeable polymer nanocomposites can be widely used for making fibers, fabrics, films, plates, sheets, and bulk materials such toys, utensils, appliances, furniture, and plastic tools as well as packaging materials. Among the technology's benefits are the increased ability to customize finished products, the reduction of inventory costs and waste, enabling antimicrobial properties, and the ability to respond faster to fashion and market demands, US Patent No. 6,646,026. http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=6646026.

國家/地區

美國