Toray Films Europe

Cytec Industries Inc.

Allnex Belgium S.a.

Allnex Austria Gmbh

Keltoum Ouzineb

Maria Cristina Penache

Dalip Kumar Kohli

Johann Billiani

Yiqiang Zhao

Gerhard Reidlinger

Philippe Deligny

Laurent Derveaux

José Pierre

The aim of the invention is to provide polyester/primer/metallic coating composite films having good adherence of the metallic coating in dry and humid conditions. Said films also form a good gas barrier: oxygen permeability less than or equal to 0.8 cc/m2/d; water vapour permeability less than or equal to 0.3 g/m2/d. To this end, the invention concerns a composite film comprising a polyester substrate, at least one coating adhering on at least one of the faces of the substrate and at least one layer of primer for cross-linked adhesion between the substrate and the coating. Said primer comprises at least one acrylic and/or methacrylic polymer P1, at least one acrylic and/or methacrylic polymer P2 different from P1, at least one cross-linking agent, and, preferably, at least one polyester that is soluble or dispersible in water: &#x2014;P1 having a gel content TG1&#x3e;70% by dry weight with respect to P1; &#x2014;P2 having a gel content TG2&#x2264;TG1 and &#x2264;20% by dry weight, with respect to P2; &#x2014;P1 having a surface-grafted free weak acid content&#x2265;0.8 in meq/g of polymer; &#x2014;[P2]&#x2264;60% by weight on dry by weight in respect to P1+P2. The method for producing said film, the adhering primer, and the articles obtained using said film, also form part of the present invention.

Polyester/primer/metal composite film that is cohesive and impermeable to gas, method for the production thereof and the primer utilized in said method

The invention relates to a composition intended for coating polymer films, making it possible to improve the adhesion between the film and a final coating, and to confer good barrier properties on the coated film. The coating composition comprises at least one acrylic and/or methacrylic polymer which has a gel content of at least 50% by weight, relative to the total weight of acrylic and/or methacryclic polymer, at least one crosslinking agent and at least one polyester comprising sulphonyloxy groups, which is water-soluble or water-dispersible.

Composition for coating polymer films, coating process and composite materials obtained

Corrosion-inhibiting microgels that are suitable for use in non-chromated primer compositions. Each discrete microgel is composed of a cross-linked polymer network and organic corrosion-inhibiting compounds entrapped or immobilized within the polymer network.

Corrosion-inhibiting microgels and non-chromated primer compositions incorporating the same

A method for coating a support with an adhesion primer for improving the connection between the support and an active outer layer. To this end, the coating of the support with a layer of adhesion primer is carried out with an aqueous dispersion including (i) particles of at least one acrylic and/or methacrylic polymer having either a gel content of less than 50 wt. % and an acrylic and/or methacrylic acid copolymer content of at least 10 wt. %, or a gel content of at least 50 wt. %, and (ii) at least one cross-linking agent in an aqueous solution, that can allow interfacial cross-linking and leads to a residual content of free acid functions of the surface copolymer(s) of at least 5 wt. %.

Method for coating a support with a dispersion based on an acrylic polymer and a cross-linking agent

The invention relates to a graft copolymer latex comprising the which comprises a graft copolymer ABC of at least one olefinically unsaturated monomer C and at least one modified alkyd resin A2B or modified oil A1B which modified alkyd resin A2B or modified oil A1B have chain-pendant olefinically unsaturated groups, to a process for its preparation, and the use thereof a binder in coating compositions.

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Lyons, France

Keltoum Ouzineb