Impact resistant, flame retardant thermoplastic molding...

C - Chemistry – Metallurgy – 08 – L

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C08L 69/00 (2006.01)

Patent

CA 2665249

A thermoplastic molding composition characterized by its flame retardance and impact strength is disclosed. The composition contains A) 70 to 99 parts by weight of aromatic poly(ester) carbonate B) 1 to 30 parts by weight of polyalkylene terephthalate, the total weight of A) and B) being 100 parts resin, and C) 1 to 20 parts per hundred parts resin (phr) of graft (co)polymer having a core-shell morphology, including a grafted shell that contains polymerized alkyl(meth)acrylate and a composite rubber core that contains interpenetrated and inseparable polyorgano- siloxane and poly(meth)alkyl acrylate components, D) 2 to 20 phr of a phosphorous-containing compound, and E) 0.1 to 2 part by weight of fluorinated polyolefin.

L'invention concerne une composition de moulage thermoplastique caractérisée par sa résistance aux flammes et sa résistance aux impacts. La composition contient A) 70 à 99 parties en poids de carbonate de poly(ester) aromatique, B) 1 à 30 parties en poids de téréphtalate de polyalkylène, le poids total de A) et B) représentant 100 parties de résine, et C) 1 à 20 parties en poids pour cents parties de résine (phr) d'un (co)polymère greffé présentant une morphologie cAEur-enveloppe qui comprend une enveloppe greffée qui contient du (méth)acrylate d'alkyle polymérisé et un cAEur en caoutchouc composite qui contient des composants polyorganosiloxane et poly(méth)alkyle acrylate interpénétrés et inséparables, D) 2 à phr d'un composé qui contient du phosphore et E) 0,1 à 2 parties en poids d'une polyoléfine fluorée.

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