Filled polycarbonate compositions with modified resilience

Details Filled polycarbonate compositions with modified resilience Filled polycarbonate compositions with modified resilience

C - Chemistry, Metallurgy

08

K

C08K 7/28 (2006.01) C08L 69/00 (2006.01)

Patent

CA 2670239

The invention relates to filled polycarbonate compositions with modified resilience containing A) 10 - 90 parts by wt. of aromatic polycarbonate and/or aromatic polyester carbonate, B) 0.5 - 30 parts by wt. of rubber-modified graft polymer, C) 0. 1 - 50 parts by wt. of hollow glass balls, D) 0 - 20 parts by weight of a flame-proofing agent containing phosphorus, E) 0 - 40 parts by weight of vinyl(co)polymer (E.1) and/or polyalkylene terephthalate (E.2), and F) 0 - 10 parts by weight of other additives. Said compositions are characterised by having an improved flow behaviour, a high stiffness and low processing shrinkage and its high scratch resistant properties remain unchanged. The invention also relates to a method for the production thereof, to the use thereof for producing moulded bodies and moulded bodies that can be obtained from the above-mentioned compositions.

L'invention concerne des compositions de polycarbonate chargées et modifiées choc contenant A) 10 à 90 parties en poids de polycarbonate aromatique et/ou de carbonate de poIyester aromatique, B) 0,5 à 30 parties en poids de polymère greffé à caoutchouc modifié, C) 0,1 à 50 parties en poids de billes de verre creuses, D) 0 à 20 parties en poids d'agent ignifuge contenant du phosphore, E) 0 à 40 parties en poids de (co)polymère vinylique (E.1) et/ou de polyalkylène téréphtalate (E.2), F) 0 à 10 parties en poids d'additifs, ces compositions se caractérisant par une meilleure aptitude à l'écoulement, une grande rigidité et un faible retrait lors du traitement, leur forte résistance à l'abrasion restant inchangée. L'invention porte également sur un procédé de production associé, sur leur utilisation pour fabriquer des éléments moulés et sur des éléments moulés à base des compositions susmentionnées.

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