Flame retardant polycarbonate composition

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 69/00 (2006.01) C08K 5/00 (2006.01) C08K 5/36 (2006.01) C08K 5/42 (2006.01) C08K 5/43 (2006.01) C08L 27/12 (2006.01) C08L 33/10 (2006.01)

Patent

CA 2381294

A thermoplastic molding composition comprising polycarbonate resin and additive, positive, amounts of stabilizer and salt is disclosed. The composition is characterized by its freedom from splay and by its improved flame retardance. The stabilizer of the invention is a physical mixture of poly(alkyl methacrylate) with fluorinated polyolefin, and the salt is an alkali metal or alkaline earth metal salt of perfluoroalkane sulfonic acid, aromatic sulfimide, or aromatic sulfonic acid.

L'invention concerne une composition thermoplastique de moulage, comprenant une résine de polycarbonate, un additif, et des quantités positives de stabilisateur et de sel. Cette composition est caractérisée par le fait qu'elle est exempte d'évasement, et qu'elle présente une amélioration de sa propriété retardatrice de flamme. Le stabilisateur est constitué par un mélange physique de poly(alkyl méthacrylate) avec une polyoléfine fluorée, et le sel est un métal alcalin ou un sel de métaux alcalino-terreux d'acide sulfonique perfluoroalcane, de sulfimide aromatique ou d'acide sulfonique aromatique.

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