Abstract: The invention relates to fluorinated-acrylic thermoplastic compositions, to powder coatings made of such compositions, and to a process for preparing said powder coatings.

Abstract: The present invention concerns a fluorinated polymer composition, methods for producing same, and products that can be produced from said composition. More particularly, the invention concerns a thermoplastic polymer composition comprising the following components A, B and C: A—a polyvinylidene fluoride (PVDF) homopolymer comprising a fraction of ultra high molecular weight chains (UHMCF); B—a vinylidene fluoride (VDF) elastomeric copolymer and at least one other fluorinated comonomer copolymerisable with VDF, and C—a VDF homopolymer having a lower viscosity than component A.

Abstract: The present invention relates to a binder which can be used in a lithium-ion battery, comprising at least one polyvinylidene fluoride and at least one acrylic copolymer including monomers having functional groups which have an affinity for metals or are capable of fixing to the metals. According to the invention, in a characteristic manner, said polyvinylidene fluoride is such that a solution of N-methyl-2-pyrrolidone containing 5 wt % of said polyvinylidene fluoride has a viscosity, measured at 23° C. with an imposed shear rate of 30 rpm, of 125 mPa·s to 1500 mPa·s.

Abstract: The present invention concerns a fluorinated polymer composition, methods for producing same, and products that can be produced from said composition. More particularly, the invention concerns a thermoplastic polymer composition comprising the following components A, B and C: A- a polyvinylidene fluoride (PVDF) homopolymer comprising a fraction of ultra high molecular weight chains (UHMCF); B- a vinylidene fluoride (VDF) elastomeric copolymer and at least one other fluorinated comonomer copolymerisable with VDF, and C- a VDF homopolymer having a lower viscosity than component A.

Abstract: The invention relates to a multi-layer weatherable film structure having an outer layer of a highly weatherable film, a layer having a high thermal deformation temperature, an optional tie layer, and a thin layer of polyolefin or polyamide. The highly weatherable film layer preferably is polyvinylidene fluoride. The polyolefin or polyamide layer is less than 500 microns in thickness, and preferably the whole film structure is less than 750 microns thick. The polyolefinjpolyamide side of the film structure can easily be adhered to many different substances—especially polyolefins and polyamides. This film can be used to provide a highly weatherable protective layer a substrate. One useful application for the film is in a photovoltaic module to protect the back side of the module from weathering and abrasion. The multi-layer film structure can be adhered to a typical polyolefin-based encapsulant layer and used as a backsheet encapsulant in a photovoltaic module.

Abstract: The invention relates to a multilayer pipe which comprises (in the following order, from the inside of the pipe outwards): optionally, a layer C1 of a fluoropolymer; a layer C2 of a fluoropolymer onto which at least one unsaturated monomer has been radiation-grafted, optionally blended with a fluoropolymer; optionally, an adhesion tie layer C3, this layer C3 being directly attached to the layer C2 containing the radiation-grafted fluoropolymer; a layer C4 of a polyolefin optionally blended with a functionalized polyolefin, directly attached to the optional layer C3 or else to the layer C2; optionally, a barrier layer C5; and optionally, a layer C6 of a polyolefin.

Abstract: The present invention concerns compositions made from fluorinated polymers and the uses of same in order to produce transparent monolayer or multilayer films intended to protect various substrates. The polymer composition consists of at least one polymer made from vinylidene fluoride, at least one acrylic polymer and at least one UV absorber, the mass ratio of said fluorinated polymer being 60 and 90%, the mass ratio of said UV absorber being from 0.5 to 5% and the molecular weight of the latter is greater than 500 g/mol.

Abstract: The invention relates to a method for producing composition, said method involving—mixing a polyvinylidene fluoride with a copolymer of vinylidene fluoride and a comonomer, and with a crosslinking agent; crosslinking the obtained mixture. The invention further relates to the composition obtained by said method as well as the use of the composition for producing various items, such as pipes.

Abstract: The invention relates to a composition comprising: from 60 to 80% by weight of a polyvinylidene fluoride; from 10 to 30% by weight of a copolymer of vinylidene fluoride and of a comonomer; a plasticizer; and from 3 to 20% by weight of fibers; and also to the use of this composition in the manufacture of various articles, such as pipes.

Abstract: The present invention relates to a fluorinated composition and a fluorinated film having properties that make it suitable for use outside, especially in the agricultural sector. The film according to the invention is a single-layer polymer film comprising a polyvinylidene fluoride (PVDF) matrix and at least one impact modifier having a polyorganosiloxane core and at least one thermoplastic shell, in which the weight content of impact modifier varies between 2.5% and less than 40%. According to one embodiment variant, the invention relates to multilayer films comprising at least one layer of said fluorinated film and at least one layer of unmodified PVDF.

Abstract: The present invention relates to the use of a specific multilayer structure in the front and/or rear protective sheet of a photovoltaic module comprising photovoltaic cells covered with an encapsulant. This multilayer structure comprises a substrate enclosing at least one halogenated polymer and at least one stack of one layer (A) of SiO2 and one layer (B) of an SiOxNyHz material disposed between the substrate and the layer (A), said layers having given thicknesses. This stack is disposed on the face of the substrate turned towards the encapsulant and optionally on the opposing face of the substrate. It also relates to a photovoltaic module comprising the abovementioned multilayer structure in the front and/or rear protective sheet thereof.

Abstract: The invention relates to a multilayer film of A/B/C structure comprising: a first layer of composition A, comprising a fluoropolymer; a second layer of composition B, comprising a filled fluoropolymer; and a third layer of composition C, comprising a fluoropolymer, characterized in that the first and third layers have a melting point above 150° C., measured by DSC, and in that the transmittance in visible light is less than 30% for a multilayer film thickness of 25 ?m. The invention also relates to the use of a fluoropolymer-based film preferably for a photovoltaic cell back panel, a high-performance textile or a metal, the film adhering to the substrate by means of an adhesive layer placed between the substrate and the film.

Abstract: The invention relates to a multi-layer weatherable film structure having an outer layer of a highly weatherable film, a layer having a high thermal deformation temperature, an optional tie layer, and a thin layer of polyolefin or polyamide. The highly weatherable film layer preferably is polyvinylidene fluoride. The polyolefin or polyamide layer is less than 500 microns in thickness, and preferably the whole film structure is less than 750 microns thick. The polyolefinjpolyamide side of the film structure can easily be adhered to many different substances—especially polyolefins and polyamides. This film can be used to provide a highly weatherable protective layer a substrate. One useful application for the film is in a photovoltaic module to protect the back side of the module from weathering and abrasion. The multi-layer film structure can be adhered to a typical polyolefin-based encapsulant layer and used as a backsheet encapsulant in a photovoltaic module.

Abstract: The invention relates to a multi-layer structure containing from the inside towards the outside: a layer C1 comprising at least one functionalized fluorinated polymer optionally mixed with at least one compatible fluorinated polymer; a layer C2 containing at least one adhesive binder; a layer C3 containing at least one polyolefin, preferably a polyethylene; a layer C4 containing at least one adhesive binder; a barrier layer C5 containing at least one barrier polymer, optionally reinforced against impacts; the layers are arranged against each other in the above mentioned order. The invention also relates to the use of this mull-layered structure for storing or transferring fuel.

Abstract: The invention relates to a novel use of a multilayer structure, combining fluorinated polymers and PVC, as protection for use at the rear of a photovoltaic solar panel, said structure having improved durability in outdoor environments, while retaining the other properties associated with a back-sheet, namely good electric insulation, thermal stability in terms of volume and dimensions and good adhesion to the encapsulating material. The invention relates to the use of a multilayer structure as protection at the rear of a solar panel, said structure comprising at least one layer of fluorinated polymer and one layer of PVC.

Abstract: The present invention relates to a composition comprising a fluoropolymer and two white inorganic fillers, the said composition being intended for the manufacture of thin monolayer films which are opaque to visible light and to UV rays and which can be used in particular in the field of photovoltaic cells. This composition consists of at least one fluoropolymer and of two white inorganic fillers, which are zinc oxide and titanium oxide; they are present in a proportion by weight ranging from 5 to 30% and from 3 to 7.5% respectively, The said composition additionally comprises less than 5% by weight of acrylic polymer, with respect to the total weight of the composition.

Abstract: The invention relates to an extrusion agent comprising: at least one heterogeneous PVDF (A), in other words a copolymer of VDF and at least one comonomer of VDF, comprising by weight at least 50%, advantageously at least 75%, of VDF which has a melting point Tm (expressed in ° C.)>172-549 m, preferably >1.1×(172-549 m), where m denotes the overall molar percentage of comonomer(s); and at least one interface agent (B), which are optionally diluted in a polyolefin (C). The heterogeneous PVDF preferably has a Tm of between 160 and 172° C. Advantageously it is also a VDF-HFP copolymer containing, by weight, from 88% to 92% of VDF and from 8% to 12% of HFP. The extrusion agent is used to reduce or eliminate the surface defects which arise during the extrusion of a thermoplastic resin (D). This resin may be a polyolefin, a styrenic resin, a polyester or a PVC. Optionally it may also be filled, i.e., may contain dispersed organic or inorganic particles.

Abstract: The present invention relates to a composition consisting of a fluoropolymer and a white inorganic filler, said composition being intended for the manufacture of monolayer films opaque to visible tight and to UV radiation, useable in particular in the field of photovoltaic cells. The polymeric composition consists of a fluoropolymer and zinc oxide (ZnO), said filler being present in said composition in a weight proportion of 20 to 40%, preferably 20 to 35%. The use of this filler serves on the one hand to avoid the addition of acrylic polymers to the fluoropolymer, and on the other hand, to use processing temperatures that are compatible with the manufacture of a monolayer film by extrusion blow moulding, that is, a temperature of about 220 to 260° C., thereby serving to prevent the degradation of the fluoropolymer.

Abstract: The present invention relates to a process for forming a polymeric composition composed of a fluoropolymer and of zinc oxide (ZnO) of nanometric size from an acrylic masterbatch. The polymeric composition is intended for the manufacture of films transparent in the visible region and opaque to UV radiation. More particularly, in the composition according to the invention, the filler is present in a proportion by weight of 0.1 to 10%, preferably of 0.5 to 6%, the ZnO particles have a size ranging from 25 to 40 nm, preferably from 30 to 35 nm, these particles have a surface treatment and the said composition is devoid of acrylic polymers.

Abstract: The present invention relates to multilayer films made of fluoro polymers, which have properties that make them suitable for use in the agricultural field, especially as greenhouse covering films. According to a first aspect, the invention relates to multilayer fluorinated films comprising at least three layers, including a layer A made of a first vinylidene fluoride copolymer with a crystallization temperature TcA, and a layer B made of a second vinylidene fluoride copolymer with a crystallization temperature TcB, TcA being greater than TcB, layers A and B being alternating, layer A being placed to the exterior and layer B between two layers A. Another subject of the invention relates to the use of the film according to the invention as an agricultural covering material, especially as a greenhouse covering.