Abstract: The present invention relates to a method for providing resistance to phenolic yellowing, during storage, transportation and processing of polyamide articles, caused by the presence of phenolic compounds in plastic package materials. The phenolic yellowing resistance is obtained by adding a sulfonated reagent during polymerization of the polyamide and/or during the formation of the polyamide article, like melt-spinning extrusion, and/or during the conversion of the polyamide article by texturizing.

Abstract: The present invention relates to a method for providing resistance to phenolic yellowing, during storage, transportation and processing of polyamide articles, caused by the presence of phenolic compounds in plastic package materials. The phenolic yellowing resistance is obtained by adding a sulfonated reagent during polymerization of the polyamide and/or during the formation of the polyamide article, like melt-spinning extrusion, and/or during the conversion of the polyamide article by texturizing.

Abstract: A cosmetic composition is described that includes particles of a polymeric composition that includes a polymer matrix and one or a plurality of mineral filler(s), uniformly dispersed in the polymer matrix, having properties of absorption and/or emission in the far infrared region ranging from 2 ?m to 20 ?m. The particles of the polymeric composition can be dispersed in a carrier fluid including water and/or one or a plurality of organic fluids. The composition is, for example, intended to prevent or reduce the signs of skin aging.

Abstract: A cosmetic composition is described that includes particles of a polymeric composition that includes a polymer matrix and one or a plurality of mineral filler(s), uniformly dispersed in the polymer matrix, having properties of absorption and/or emission in the far infrared region ranging from 2 ?m to 20 ?m. The particles of the polymeric composition can be dispersed in a carrier fluid including water and/or one or a plurality of organic fluids. The composition is, for example, intended to prevent or reduce the signs of skin aging.

Abstract: Methods of using a polymeric composition are described for preventing or reducing the signs of aging. The polymeric composition can include a polymer matrix and one or a plurality of mineral filler(s), uniformly dispersed in the polymer matrix, having properties of absorption and/or emission in the far infrared region ranging from 2 ?m to 20 ?m.

Abstract: A melt spinning process for the production of synthetic polymer continuous filament yarns useful in the continuous filament production industry, suitable such polymers including those that are melt-spun, e.g., inter alia, polyesters, polyamides and polyolefins, and wherein the spinning process includes two filtration steps: a first step corresponding to a prefiltration employing one or more centralized filters located at a point on the polymer melt transfer lines and a final filtration carried out in the filtering elements of the screen-pack/spinneret assemblies.

Abstract: Nanofibers are produced by converting/electrospinning a solution of polyamides into nanofibers having a mean diameter ranging from about 40 nm to about 350 nm; products containing such nanofibers are useful as filters in particle systems, as separation membranes for the textile industry or in the cell or polar solvent industry, or as humidity sensors or the like, as well as for applications in the materials industry.