Arkema France

Trinseo Europe Gmbh

Patrick Delprat

Alexander Korzhenko

Patrice Gaillard

Catherine Bluteau

Dmitry Zakharov

Jerome Berge

Jean-Marc Boutillier

Serge Bordere

Andriy Tymoshenko

Christophe Vincendeau

Beni Cahana

Anatolly Goryachkin

Anatoliy Goryachkin

Pierre-Louis Lambert

Jérôme Berge

Oleksadr Korzhenko

José Texeira-Pires

Method used to protect a thermoplastic polymer consisting of superposing a protective layer (I) comprising an acrylic copolymer comprising, by weight (the total making 100%): from 80 to 99.8% of methyl methacrylate (MMA), from 0 to 20% of at least one comonomer that can be copolymerized with MMA by a radicalar method, and from 0.2 to 10% of maleic anhydride or 15% of acrylic and/or methacrylic acid and possibly anhydride groups with a formula: in which Rand Rdenote H or a methyl radical, a layer of at least one thermoplastic polymer (II), all these steps being performed in order by coextrusion, by hot compression or by multi-injection.

Multi-layer coextrusion method

A method for the manufacture of a paste composition suitable for the production of an electrode for lead-acid battery, including mixing a carbon nanofiller/lead oxide composite of a first particulate size with sulphuric acid, water and further lead oxide of a second particulate size. Also, the paste thus obtained, the composite used in its manufacture, and the electrode and lead-acid battery obtained from this paste.

Method for manufacturing an electrode paste

A composite material containing a polymer composition and a very low concentration of carbon nanofillers, in particular carbon nanotubes, having improved mechanical properties. The method for producing said composite material and to the different uses thereof. The use of carbon nanofillers at a concentration of between 0.1 ppm and 99 ppm in order to improve mechanical properties, in particular the tensile properties of a polymer matrix encasing at least one polymer selected from a thermoplastic polymer alone or mixed with an elastomer resin base, while facilitating the shaping thereof into composite parts using any suitable technique, in particular injection, extrusion, compression or molding, and while improving the electrostatic dissipation capability thereof.

Composite material having a very low content of carbon-based nanofillers, process for the preparation thereof and uses thereof

The use of very low concentrations of carbon nanofillers selected from among carbon nanotubes, carbon nanofibers, graphene or a mixture of same in any proportions, in order to improve resistance to ageing, in particular protection against ultraviolet (UV) light, of a composite material based on a polymer matrix. A composite product comprising a composite material, the composite material stabilized with respect to UV light using a content of between 1 ppm and 0.1% by weight, of carbon-based nanofillers chosen from carbon nanotubes, carbon nanofibers, graphene or a mixture of these in all proportions, wherein the composite product is selected from yarns, films, tubes, fibers, and nonwovens.

Use of carbon-based nanofillers at a very low content for the UV stabilization of composite materials

The present invention relates to photobioreactors and more particularly to the use of a transparent composition based on at least one methacrylic polymer for constructing installations for the culture of photosensitive organisms. This composition can be in the form of films, plates, profiled elements or cylinders such as tubes. The invention also relates to a transparent multilayer structure comprising at least one layer of a methacrylic polymer and one layer comprising at least one antifouling additive, and to the use thereof for constructing installations for the culture of photosensitive organisms.

Use of a transparent composition for photobioreactors

The invention relates to a methacrylic composition comprising (100-x-y) parts of at least one methacrylic polymer comprising a MMA homo- or copolymer containing dispersed therein: x parts of particles of a thermoplastic polymer A containing MMA as a majority monomer which is crosslinked or has a weight-average mass M&#x3e;300,000 g/mol, (in relation to a PMMA standard), with a weight-average diameter (ASTM D1921)&#x3e;100 &#x3bc;m, and &#x3c;500 &#x3bc;m; and y parts of particles of a crosslinked thermoplastic polymer comprising MMA as a majority monomer, with a weight-average diameter (ASTM D1921) ranging from 15 to 70 &#x3bc;m; such that x varies between 2 to 20 and y varies between 10 to 25. Preferably, x+y&#x3c;33. The invention also relates to a multilayer structure consisting of: a layer (I) comprising the inventive methacrylic composition; a layer (II) comprising at least one thermoplastic polymer, and an optional intermediate layer between layers (I) and (II).

Methacrylic composition for obtaining a coating having a rough texture and a matt appearance

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Lescar, France

Patrick Delprat