Flame-proof impact resistant-modified polycarbonate...

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

C08K 3/32 (2006.01) C08K 5/5313 (2006.01) C08L 51/08 (2006.01) C08L 69/00 (2006.01)

Patent

CA 2709948

The invention relates to impact resistant-modified polycarbonate compositions containing A) 50 to 99.4 parts by weight of aromatic polycarbonate and/or aromatic polyester carbonate, B) 0.5 to 20 parts by weight of graft copolymer containing a silicone or silicone acrylate rubber, C) 0.1 to 30 parts by weight of a salt of a phosphinic acid, the parts per weight of each of components A, B, and C being relative to the total parts by weight of components A+B+C. Said polycarbonate compositions are characterized by an optimal combination of good resistance to flames, great thermostability, good mechanical properties, and good resistance to chemicals. The invention also relates to the use of said polycarbonate compositions for producing molded articles as well as said molded articles.

L'invention concerne des compositions polycarbonate à résilience modifiée, contenant A) 50 à 99,4 % en poids (respectivement par rapport à la somme des parts en poids des composants A+B+C) de polycarbonate aromatique et/ou de polyestercarbonate aromatique, B) 0,5 à 20 % en poids (respectivement par rapport à la somme des parts en poids des composants A+B+C) de copolymérisat greffé contenant un caoutchouc de silicone ou un caoutchouc de siliconacrylate, et C) 0,1 à 30 % en poids (respectivement par rapport à la somme des parts en poids des composants A+B+C) d'un sel d'un acide phosphinique, caractérisées par une combinaison optimale entre un bon ignifugeage, une résistance élevée au thermoformage, de bonnes propriétés mécaniques et une bonne résistance aux agents chimiques. L'invention concerne également l'utilisation des compositions polycarbonate pour la fabrication de corps moulés et les corps moulés eux-mêmes.

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