Powder coating fluoropolymer compositions with aromatic...

C - Chemistry – Metallurgy – 08 – K

Patent

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C08K 5/13 (2006.01) C09D 127/12 (2006.01)

Patent

CA 2541995

Provided is a composition comprising an aromatic material selected from a polythiol aromatic compound or resin, a hydroxythiophenol compound or resin, a catechol novolak resin, a catechol cresol novolak resin, a polyhydroxy aromatic resin or compound comprising at least one aromatic ring having at least one hydroxyl group attached directly to the aromatic ring wherein at least one hydroxyl group is a phenolate salt, or a combination thereof, and a salt former compound capable of forming a salt with the aromatic material, a fluoropolymer, and optionally a phase transfer catalyst. Also provided are articles comprising powder-coated fluoropolymers with aromatic compounds, and methods for making the compositions and articles.

L'invention concerne une composition comprenant une substance aromatique choisie parmi un composé ou une résine aromatique de polythiol, un composé ou une résine d'hydroxythiophénol, une résine novolaque de catéchol, une résine novolaque de catéchol crésol, une résine ou un composé aromatique polyhydroxylé renfermant au moins un noyau aromatique possédant au moins un groupe hydroxyle fixé directement au noyau aromatique, au moins un groupe hydroxyle étant un sel de phénolate, ou une combinaison correspondante, ainsi qu'un composé de formation de sel permettant de former un sel avec la substance aromatique, un fluoropolymère, et éventuellement un catalyseur de transfert de phase. L'invention concerne également des articles comprenant des fluoropolymères appliqués par pulvérisation renfermant des composés aromatiques, ainsi que des procédés de fabrication de ces compositions et de ces articles.

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