Rhodia Poliamida E Especialidades Ltda

Rhodia Poliamida E Especialidades S.a.

Gabriel Gorescu

Tarcis Cordeiro Bastos

Thomas Gonzaga Canova

Thomas Canova

Renata Redondo Bonaldi

Richard Macret

Everton Ferreira Dos Santos

Renata Bonaldi Redondo

Paulo Oliveira Candido

Pierre Hansu Pak

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.

Method for providing resistance to yellowing in polyamide articles and polyamide articles obtained from this method

The subject of the present invention is yarns, fibers or filaments and also a textile article and a medical device obtained from said yarns, for improving skin cicatrization, in particular by activating collagen synthesis at the surface of the injured skin. The yarns, fibers or filaments of the invention comprise a polymeric matrix and inorganic fillers, uniformly dispersed in the polymeric matrix, having properties of absorption and/or of emission in the 2-20 &#x3bc;m far-infrared region.

Yarns, fibers or filaments, textile article, and medical device obtained from said yarns for skin cicatrization

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 &#x3bc;m to 20 &#x3bc;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.

Cosmetic composition containing a dispersion of polymer particles and mineral fillers

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Santo André, Brazil

Gabriel Gorescu