Thermoplastic molding composition based on aes rubber with...

Details Thermoplastic molding composition based on aes rubber with... Thermoplastic molding composition based on aes rubber with...

C - Chemistry, Metallurgy

08

L

C08L 69/00 (2006.01) C08L 51/00 (2006.01) C08L 67/00 (2006.01)

Patent

CA 2679642

A thermoplastic composition suitable for making articles having low gloss and good impact properties is disclosed. The composition contains (A) 20 to 94.5 percent relative to the weight of the composition (pbw) of an aromatic (co)poly(ester)carbonate, (B) 5 to 40 pbw of a graft (co)polymer that includes an EPDM graft base and a grafted phase that is compatible with the aromatic (co)poly(ester)carbonate, and (C) 0.5 to 20 pbw of a linear copolymer containing at least one unit derived from a glycidyl ester monomer, and (D) 0 to 40 pbw of a vinyl copolymer. The gloss of the composition is lower than that of a corresponding composition that contains none of component (C).

L'invention concerne une composition thermoplastique adaptée pour réaliser des articles à faible brillant et à bonnes propriétés de résistance aux impacts. La composition contient (A) de 20 à 94,5 % par rapport au poids de la composition (partie en poids) d'un (co)poly(ester)carbonate aromatique ; (B) de 5 à 40 % en poids d'un (co)polymère greffe qui comprend une base de greffe d'EPDM et une phase greffée compatible avec le (co)poly(ester)carbonate aromatique ; et (C) de 0,5 à 20 % en poids d'un copolymère linéaire contenant au moins une unité dérivée d'un monomère d'ester glycidylique ; et (D) de 0 à 40 % en poids d'un copolymère vinylique. Le brillant de la composition est inférieur à celui d'une composition correspondante qui ne contient pas de composant (C).

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