Abstract: The field of the invention is that of fluorescence spectroscopic methods. In particular, the present invention relates to a fluorescence spectroscopic method and to several products that can be analyzed using this method.

Abstract: 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.

Abstract: A biaxially oriented multilayer transparent film including at least two layers of polyester, respectively a core layer and at least one outer layer, which can be identical or different, wherein: i) at least the core layer includes at least one biaxially oriented transparent polyester PE1, ii) at least one of the outer layers includes, on the one hand, at least one biaxially oriented polyester PE2, and, on the other hand, particles coming from the reaction between at least one metal compound and at least one monomeric or oligomeric unit of PE2, the particles having more preferably a d50—as ?m and following an order of preference—between 0.5 and 5; between 1.0 and 4, and between 1.5 and 3.0. Also relates to the manufacture of this film and its applications as a laminate in particular in the backsheets of photovoltaic cells.

Abstract: 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.

Abstract: A laminate aluminium/multilayer biaxially oriented polyester film with successively: M—an aluminum support; C—an amorphous layer C having a copolyester PET-G—which the diol units include Ethylene Glycol EG—units and CycloHexaneDiMethanol CHDM—units; B—a crystallizable layer B having: a copolyester PET-X which the diol units include Ethylene Glycol EG—units and which the acid units include Terephtalic Acid TA—units and units of at least one Dicarboxylic Acid Different From Terephtalic Acid [DADFTA units], the DADFTA units being chosen in the group consisting of Isophtalic Acid IA—units, Sebacic Acid SA—units, Adipic Acid AA—units, and mixtures thereof; and possibly a polyester PolyEthyleneTerephtalate PET; A—optionally a layer A, identical or different from the layer B i. the concentration of the CHDM units in the layer C has between 18 and 34 mol %; ii. the melting temperature of the layer B is comprised between 180 and 245° C.

Abstract: A multilayer transparent film with successively: an amorphous layer C of copolyester PET-G-which the diol units include Ethylene Glycol -EG- units and CycloHexaneDiMethanol -CHDM- units; a crystalline/crystallizable layer B with: a copolyester PET-X which the diol units include Ethylene Glycol -EG- units and which the acid units include Terephtalic Acid -TA- units and units of at least one Dicarboxylic Acid Different From Terephtalic Acid [DADFTA units], the DADFTA units being chosen in the group consisting of Isophtalic Acid -IA-units, Sebacic Acid -SA-units, Adipic Acid -AA-units, and mixtures thereof; and possibly a polyester PolyEthyleneTerephtalate PET; optionally a layer A, identical or different from the layer B, wherein the concentration of the CHDM units in the layer C is between 15 and 34 mol % and the melting temperature of layer B is between 180 and 245° C. Also a manufacturing method of the film and its applications for the manufacture of containers.

Abstract: 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.

Abstract: 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. %.

Abstract: The invention concerns a multilayer biaxially oriented white polyester film (adhesion, absence of chalking, opacity whiteness, reflectance, hydrolysis resistance & light stability) comprising three polyester layers: a core layer and two outer layers and contains TiO2 particles. In this film: at least one layer comprises a PET whose: number average molecular weight is within [18500-40000]; intrinsic viscosity IV is ?0.70 dL/g; and carboxyl group content is ?30 eq/T. Additionally, the core layer comprises TiO2 particles in a range of [0.1-40]% w/w; the intrinsic viscosity IV is between [0.5-0.85] dL/g; a small endothermic peak temperature is between 180-230° C.; and at least one light stabilizer is added in at least one of the outer layers, in a total concentration between [0.1-35]% w/w. The invention also includes the method for manufacturing such film and the laminate which is part of the back sheet of a solar cell.

Abstract: A biaxially oriented multilayer transparent film including at least two layers of polyester, respectively a core layer and at least one outer layer, which can be identical or different, wherein: i) at least the core layer includes at least one biaxially oriented transparent polyester PE1, ii) at least one of the outer layers includes, on the one hand, at least one biaxially oriented polyester PE2, and, on the other hand, particles coming from the reaction between at least one metal compound and at least one monomeric or oligomeric unit of PE2, the particles having more preferably a d50—as ?m and following an order of preference—between 0.5 and 5; between 1.0 and 4, and between 1.5 and 3.0. Also relates to the manufacture of this film and its applications as a laminate in particular in the backsheets of photovoltaic cells.

Abstract: 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.

Abstract: The invention relates to a polyester film comprising, on at least one of the faces thereof, a scratch-resistant crosslinked coating. The objective of the invention is to provide a polyester film coated with an abrasion-resistant layer which adheres perfectly to the polyester substrate, and is simple and economical to manufacture. To achieve this objective, the crosslinked hard coating applied to the polyester film comprises: i. 20% to 99% by weight of at least one ester and/or one amide of (meth)acrylic acid comprising a substituted protic group; ii. 20% to 99% by weight of acrylic resin(s); iii. 1% to 40% of a polyalkylene diacrylate; iv. 0 to 50% of at least one derivative of the benzophenone family; v. 0 to 5% of at least one photoinitiator. The invention also relates to the method for obtaining this polyester film coated with an abrasion-resistant hard layer. Use in the production of polyester/metal sheet (steel) colaminate.