Abstract:
The present invention pertains to a piezoelectric fluoropolymer, to a process for manufacturing said fluoropolymer and to uses of said fluoropolymer in electric and/or electronic applications.
Abstract:
La présente invention concerne un copolymère amphiphile dibloc consistanten: - de 40 à 60% en poids, par rapport au poids du copolymère, d'un bloc hydrophile comprenant au moins un motif issu d'un monomère d'acrylate de n-butyle et au moins un motif issu d'un monomère de méthacrylate d'hydroxyéthyle, et - de 40 à 60% en poids, par rapport au poids du copolymère, d'un bloc hydrophobe comprenant au moins un motif issu d'un monomère de méthacrylate de méthyle. La présente invention concerne également l'utilisation dudit copolymère en tant qu'additifpour la fabrication d'une membrane polymériquede filtration.
Abstract:
L'invention concerne l'utilisation d'une composition en tant qu'agent d'extrusion pour la fabrication d'un produit extrudé, dans laquelle: –le produit extrudé comprend une polyoléfine, ainsi que des charges dans une teneur supérieure ou égale à 15 % en poids; –la composition utilisée comprend un polymère fluoré présentant une viscosité inférieure ou égale à 15 kP à une température de 232°C et à un taux de cisaillement de 100 s -1 . L'invention concerne aussi un procédé d'extrusion d'une polyoléfine additionnée de charges, en présence d'un tel agent d'extrusion.
Abstract:
The invention pertains to a mobile electronic device comprising at least one part made of a fluoropolymer composition comprising at least one at least one vinylidene fluoride polymer, at least one acrylic elastomer and optionally at least one methyl methacrylate polymer, to a method for the manufacture of said part and to a method for the manufacture of said mobile electronic device.
Abstract:
Fluoropolymer-based coatings with enhanced gloss are obtained by using a semi-crystalline fluorinated polymer having a very small particle size, in combination with a nucleating agent (such as PTFE) and, optionally, an acrylic polymer.
Abstract:
The invention relates to blends containing polymers of vinylidene fluoride, having low ductile-brittle transition temperatures and having excellent low temperature impact properties while maintaining the positive aspects of unmodified vinylidene fluoride-containing polymers. The blends of this invention are produced by adding a core-shell impact modifier (CSIM) comprised of a polysiloxane core and a shell compatible with vinylidene fluoride-containing polymer. The blends are further characterized by the presence of a heterogeneous copolymer composition comprised of two or more distinct phases and/or at least one flame and smoke suppressant. The preparation of these new blends can be done by conventional thermoplastic compounding techniques such as twin screw compounding; alternatively, the CSIM can be introduced earlier, such as in the latex. The unique properties of the new blends make them useful in end-use applications where those properties provide performance advantages, such as in wires & cables and in oil and gas applications.
Abstract:
The invention relates to a heterogeneous, co-continuous copolymer composition of vinylidene fluoride and at least one other comonomer. Preferred comonomers are hexafluoropropylene and perfluoroalkylvinyl ether. The co-continuous morphology is provide by first forming a first phase polymer, then adding one or more comonomers before half of the original monomer stream has been added, and at an effective level to cause phase separation of the copolymer. The co-continuous morphology provides a means for incorporating a high level of comonomer into the copolymer with little or no adverse effect on the melting temperature. The morphology also provides the copolymer composition with a unique combination of properties, including a high melting point, good flexibility and good low temperature impact resistance. The unique properties of the polymer make it useful in end-use application where those properties provide performance advantages, such as in the wire and cable market, and in oil and gas applications.