Abstract: The present invention relates to polycarbonate compositions comprising A) from 10 to 99 parts by weight, in each case based on the sum of components A+B+C, of aromatic polycarbonate and/or aromatic polyester carbonate, B) from 1 to 35 parts by weight, in each case based on the sum of components A+B+C, of rubber-modified graft polymer of B.1 from 5 to 95 wt. % of at least one vinyl monomer on B.2 from 95 to 5 wt. % of one or more graft bases having a glass transition temperature <10° C., C) from 0 to 40 parts by weight, in each case based on the sum of components A+B+C, of vinyl (co)polymer and/or polyalkylene terephthalate, D) from 0 to 50 parts by weight, in each case based on the sum of components A+B+C, of phosphorus-containing flameproofing agent, E) from 0 to 1.

Abstract: The present invention relates to polycarbonate compositions comprising A) from 10 to 99 parts by weight, in each case based on the sum of components A+B+C, of aromatic polycarbonate and/or aromatic polyester carbonate, B) from 1 to 35 parts by weight, in each case based on the sum of components A+B+C, of rubber-modified graft polymer of B.1 from 5 to 95 wt. % of at least one vinyl monomer on B.2 from 95 to 5 wt. % of one or more graft bases having a glass transition temperature <10° C., C) from 0 to 40 parts by weight, in each case based on the sum of components A+B+C, of vinyl (co)polymer and/or polyalkylene terephthalate, D) from 0 to 50 parts by weight, in each case based on the sum of components A+B+C, of phosphorus-containing flameproofing agent, E) from 0 to 1.

Abstract: The present invention relates to polycarbonate compositions comprising: A) an aromatic polycarbonate and/or aromatic polyester carbonate; B) a graft polymer obtainable by co-precipitation of a mixture of at least two graft polymer dispersions B.1 and B.2, wherein the production of the graft polymer component B.1 takes place using at least one redox system as initiator and wherein the production of the graft polymer component B.2 takes place using at least one persulfate compound as initiator; C) optionally a vinyl (co)polymer and/or polyalkylene terephthalate; D) optionally a phosphorus-containing flame retardant; E) at least one phenolic antioxidant; F) optionally a neutral phosphorus- or sulfur-containing co-stabilisers (synergists); and G) optionally additives. Compositions of the present invention are distinguished by an optimum combination of good hydrolysis resistance and a light natural colour.

Abstract: The present invention relates to a polycarbonate composition comprising polyalkyl(alkyl)acrylate having a specific molecular weight and an impact modifier, as well as to moulded bodies obtainable from these compositions. Compositions according to the present invention exhibit superior properties, in particular with respect of low-temperature strength and melt flowability.

Abstract: Impact-modified polycarbonate compositions are disclosed that comprise a first graft polymer based on silicone-acrylate composite rubber as graft base, wherein the amount of silicone rubber is from 65 to 95 wt. % (based on the graft base), and a second graft polymer containing free copolymer, that is to say copolymer that is not chemically bonded to the rubber, and having a weight-average molecular weight of from 60,000 to 150,000 g/mol. The use of the polycarbonate compositions in the production of molded articles, and to the molded articles themselves are also disclosed. The compositions and molding compositions have an optimum combination of good elongation at tear, good hydrolytic stability and low melt viscosity.

Abstract: The disclosure relates to impact-modified polycarbonate compositions and moulding compositions comprising A) aromatic polycarbonate or aromatic polyester carbonate or mixtures of these, B) a mixture containing Ba) at least one graft polymer prepared in emulsion polymerization and Bb) at least one carboxylate salt, wherein this mixture, suspended as a 10 wt. % strength suspension in distilled water, has a pH of >7, C) at least one acidic phosphorus compound with at least one P—OH functionality, which are distinguished compared with the prior art by an improved combination of stability to hydrolysis and heat stability, and which are suitable for production of injection-moulded components which have a good toughness at low temperatures and—even with critical processing conditions (high processing temperatures)—still have a good resistance to stress cracking under the influence of chemicals.

Abstract: The disclosure relates to impact-modified polycarbonate compositions and moulding compositions comprising A) aromatic polycarbonate or aromatic polyester carbonate or mixtures of these, B) a mixture containing Ba) at least one graft polymer prepared in emulsion polymerization and Bb) at least one carboxylate salt, wherein this mixture, suspended as a 10 wt. % strength suspension in distilled water, has a pH of >7, C) at least one acidic phosphorus compound with at least one P—OH functionality, which are distinguished compared with the prior art by an improved combination of stability to hydrolysis and heat stability, and which are suitable for production of injection-moulded components which have a good toughness at low temperatures and—even with critical processing conditions (high processing temperatures)—still have a good resistance to stress cracking under the influence of chemicals.

Abstract: The present invention relates to a polycarbonate composition comprising polyalkyl(alkyl)acrylate having a specific molecular weight and an impact modifier, as well as to moulded bodies obtainable from these compositions. Compositions according to the present invention exhibit superior properties, in particular with respect of low-temperature strength and melt flowability.

Abstract: The present invention relates to polycarbonate compositions comprising: A) an aromatic polycarbonate and/or aromatic polyester carbonate; B) a graft polymer obtainable by co-precipitation of a mixture of at least two graft polymer dispersions B.1 and B.2, wherein the production of the graft polymer component B.1 takes place using at least one redox system as initiator and wherein the production of the graft polymer component B.2 takes place using at least one persulfate compound as initiator; C) optionally a vinyl (co)polymer and/or polyalkylene terephthalate; D) optionally a phosphorus-containing flame retardant; E) at least one phenolic antioxidant; F) optionally a neutral phosphorus- or sulfur-containing co-stabilisers (synergists); and G) optionally additives. Compositions of the present invention are distinguished by an optimum combination of good hydrolysis resistance and a light natural colour.

Abstract: The present invention relates to polycarbonate compositions comprising A) from 10 to 99 parts by weight, in each ease based on the sum of components A+B+C, of aromatic polycarbonate and/or aromatic polyester carbonate, B) from 1 to 35 parts by weight, in each case based on the sum of components A+B+C, of rubber-modified graft polymer of B.1 from 5 to 95 wt. % of at least one vinyl monomer on B.2 from 95 to 5 wt. % of one or more graft bases having a glass transition temperature <10° C., C) from 0 to 40 parts by weight, in each case based on the sum of components A+B+C, of vinyl (co)polymer and/or polyalkylene terephthalate, D) from 0 to 50 parts by weight, in each case based on the sum of components A+B+C, of phosphorus-containing flameproofing agent, E) from 0 to 1.

Abstract: Graft polymers are disclosed. These are obtainable by polymerization of a mixture containing A) from 40 to 99 wt. % vinyl monomers and B) from 1 to 60 wt. % of a double-bond-containing polyalkylene oxide rubber having a glass transition temperature below −50° C. and a number-average molecular weight of from 25,000 to 10,000,000. The inventive graft polymers are characterized by their very good low-temperature strength and weathering resistance.

Abstract: A process for the production of graft polymers is disclosed. Accordingly a mixture containing A) 50 to 98 parts by weight of vinyl monomers and B) 2 to 50 parts by weight of an epoxide or a mixture of epoxides is reacted in the presence of one or more multimetal cyanide catalysts. Optionally the resultant reaction mixture is further polymerized thermally or with the addition of additional free-radical formers, optionally together with the addition of further monomers. The inventive graft polymers are characterized by their excellent notched impact strength.