Arkema France

Atofina

Arkema Inc.

Karine Loyen

Benoît Brule

Philippe Blondel

Holger Senff

Laure Berdin

Anthony Bonnet

Quentin P Pineau

Karine Triballier

Damien Rauline

Francois Beaume

Helena Cheminet

Eric Labonne

Guillaume Le

Thierry Briffaud

Frederic Malet

Mathieu Sabard

Isabelle Betremieux

Pierre Nogues

Cyrille Mathieu

Benjamin Saillard

Thomas Fine

Frédéric Malet

Clio Cocquet

Johann Laffargue

René-Paul Eustache

David Silagy

François Fernagut

Hervé Ster

Regis Cipriani

Jean Jacques Flat

Francois-Xavier Pauly

Sandrine Duc

Sophie Kohler

Nathalie Meeschaert

Martine Schneider

Jean Laurent Pradel

Thierry Ouvrard

Thierry Senninger

A transparent antistatic composition based on polymethyl methacrylate (PMMA), including: 55% to 99.9% by weight of PMMA, and 0.1% to 45% by weight of at least one polyamide (PA) block-containing and polyether (PE) block-containing copolymer (PEBA) comprising polyethylene glycol (PEG), with respect to the total composition weight, the copolymer includes in the range 50% to 80% by weight of PEG with respect to the total weight of copolymer.

Transparent and antistatic PMMA composition

A transparent antistatic composition based on polymethyl methacrylate (PMMA), including: 55% to 99.9% by weight of PMMA, and 0.1% to 45% by weight of at least one polyamide (PA) block-containing and polyether (PE) block-containing copolymer (PEBA) including polyethylene glycol (PEG), with respect to the total composition weight, said copolymer being characterized in that it includes in the range 50% to 80% by weight of PEG with respect to the total weight of copolymer.

The present invention relates to an extrudable polymer composition comprising: This invention relates in particular to the use of said composition in extrusion processes for manufacturing vapour-permeable objects.

Polymer composition that can be extruded into a vapour-permeable object

The invention relates to a non-cross-linked copolymer foam with polyamide blocks and polyether blocks, wherein: the polyamide blocks of the copolymer have an average molar mass of from 200 to 1,500 g/mol; the polyether blocks of the copolymer have an average molar mass of from 800 to 2,500 g/mol; and the weight ratio of the polyamide blocks to the polyether blocks of the copolymer is from 0.1 to 0.9. The invention also relates to a method for manufacturing said foam and items manufactured from said foam.

Copolymer foam with polyamide blocks and polyether blocks

Provided is a composition including (A) 65% to 95% of a polyamide mixture, (B) 7% to 30% of at least one impact modifier or of at least one core-shell entity or of a mixture thereof, and (C) 0 to 5% of at least one additive chosen from stabilizers, dyes, plasticizers, fibers, fillers, processing aids or a mixture thereof. The composition may be used, for example, to produce an article by extruding, injection molding, molding or thermoforming.

Polyamide-based compositions that are rigid and ductile at low temperature for the preparation of sports articles obtained by injection molding

The present invention relates to cosmetic compositions used in the care and make-up field. This composition mainly comprising a continuous aqueous phase, a fatty phase and a fine and porous pulverulent copolyamide powder phase, is in the form of creamy, liquid or gelled compositions. This is in particular an emulsion, but it may also be a two-phase formulation or composition in which the fatty phase and aqueous phase are separate. The invention more particularly relates to cosmetic care and/or make-up compositions having a continuous aqueous phase in the case of an oil-in-water emulsion.

Cosmetic composition comprising a fine powder

The present invention relates to a powder of polyamide PA (homopolyamide or copolyamide) derived at least partially from renewable materials, in which the particles have a nonspherical shape and a volume median diameter of less than or equal to 20 &#x3bc;m. The present invention also relates to a process for preparing such a powder.

Fine powder of polyamide from renewable materials and method for making such a powder

The invention relates to a method for producing free powder particles of polyamide, impregnated with at least one cosmetic or pharmaceutical agent. The present invention also relates to free powder particles of polyamide having a content of at least 25% by weight of a cosmetic or pharmaceutical agent other than water, to the use of said particles in a cosmetic, pharmaceutical or perfumery products, and to compositions containing such particles.

Method for producing free powder particles of polyamide impregnated with at least one cosmetic or pharmaceutical agent, and free powder particles of polyamide having a content of at least 25 WT % of a cosmetic or pharmaceutical agent other than water

The invention relates to a method for the production of biosourced aliphatic polyester powder having a volume median diameter of less than 30 &#x3bc;m, comprising: a step consisting in supplying an aliphatic polyester having an inherent viscosity of less than 0.5 dl/g; and a step consisting in grinding the polyester, so as to obtain a polyester powder having a volume median diameter of less than 30 &#x3bc;m. The invention also relates to a powder in which the particles have a volume median diameter of less than 30 &#x3bc;m and are impregnated with a compound selected from among polyols and/or carboxylic acids. The invention further relates to the use of the powder for the production of cosmetic, pharmaceutical and perfume products.

Fine powder of biosourced aliphatic polyester and production method thereof

The invention relates to a method for obtaining polyamide or copolyamide particles which are spheroidal and whose average diameter is between 40 and 150 &#x3bc;m, preferably between 60 and 100 &#x3bc;m. Said method consists of introducing a mineral charge, preferably silica, having an average diameter of 1-30 &#x3bc;m into the reaction mixture. The invention also relates to a polyamide or copolyester amide powder and to the use thereof in order to manufacture coatings, ink compositions, paint compositions, cosmetic compositions, pharmaceutical compositions, alloys with metal powders or metal oxide powders and parts by agglomerating said powder by laser sintering, IR radiation or UV radiation.

Orgasol synthesis method with large grain silica

The present invention relates to a process for the preparation of polyamide-12 powder by anionic polymerization of lauryllactam in solution in a solvent of the lactam, the polyamide-12 powder being insoluble in this solvent, the polymerization being carried out:

Process for the manufacture of polyamide-12 powder with a high melting point

The subject of the invention is a process for producing polyamide, copolyamide, polyolefin, copolyester amide or fluorocarbon resin powder particles on to the surface of which has been grafted at least one functionalized grafting monomer, characterized in that it comprises: a) a step of blending the polyamide or copolyamide powder particles with the functionalized grafting monomer; followed by b) a step of irradiating the powder impregnated with functionalized grafting monomer resulting from a) with photons (&#x3b3;-radiation) or electrons (&#x3b2;-radiation), with a dose ranging from 0.5 to 15 Mrad. The invention also relates to the particles grafted in this way and to the compositions containing such particles.

Grafting onto a polyamide powder by gamma-irradiation

The present invention relates to a composition coextrudable with PVDF and comprising: 30 to 50 parts of PVDF; 70 to 50 parts of a copolymer comprising, by weight, 90 to 50% of methyl methacrylate (MMA) per 10 to 50% of an alkyl (meth)acrylate respectively, the alkyl having from 2 to 24 carbon atoms; 1 to 4 parts of a UV absorber; the total making 100 parts. The invention also relates to coextruded films consisting of this composition as the adhesive layer and a PVDF-based layer of 50 to 100 parts of PVDF per 50 to 0 parts of PMMA respectively. These films possess mechanical properties sufficient to allow them to be used as a coating transparent to visible light but opaque to UV radiation.

Composition coextrudable with PVDF and having no stress-whitening effect

The invention is a water/oil emulsion including a porous powder, the particles of the powder having the following characteristics: The mean diameter of the particles of the powder is between 2 &#x3bc;m and 100 &#x3bc;m, preferably from 2 to 50 &#x3bc;m, more advantageously still from 2 to 20 &#x3bc;m. The powder is chosen from a powder formed of polyamides, of polyesteramides, of polyurethanes, of poly(methyl methacrylate)s, of acrylic polymers, of polyesters, of silicones, of polyethylenes and of silicas. The invention further relates to the use of the emulsion for obtaining a make-up and/or care product for the skin which is nonshiny, nonoily, nonsticky and/or nontacky, as well as the use of the fine powder for improving the feel and/or the appearance of a cosmetic emulsion.

Growing community of inventors

Pont-Audemer, France

Karine Loyen