Flame-protected impact-modified polycarbonate compositions

A composition comprising

• A) from 77 to 90 parts by weight (based on the sum of components A+B+C) of linear polycarbonate,
• B) from 6 to 12 parts by weight (based on the sum of components A+B+C) of graft polymer having
• B.1 from 5 to 30 wt. % (in each case based on the graft polymer B) of a shell of at least one vinyl monomer and
• B.2 from 95 to 70 wt. % (in each case based on the graft polymer B) of one or more graft bases of silicone-acrylate composite rubber,
• C) from 4 to 10 parts by weight (based on the sum of components A+B+C) of phosphorus compounds according to formula (VIII)
• wherein
• R1, R2, R3 and R4, independently of one another, represent optionally halo-substituted C1-C8-alkyl, in each case optionally halo- and/or alkyl-substituted C5-C6-cycloalkyl, C6-C10-aryl or C7-C12-aralkyl,
• the substituents n independently of one another represent 0 or 1,
• the substituents q independently of one another represent 0, 1, 2, 3 or 4,
• N represents from 0.1 to 10,
• R5 and R6, independently of one another, represent C1-C4-alkyl, or halogen, and
• Y represents a single bond, C1-C7-alkylidene, C1-C7-alkylene, C5-C12-cyclo-alkylene, C5-C12-cycloalkylidene, —O—, —S—, —SO—, —SO2— or —CO—,
• D) from 0 to 3 parts by weight (based on the sum of components A+B+C) of anti-dripping agents, and
• E) from 0 to 3 parts by weight (based on the sum of components A+B+C) of thermoplastic vinyl (co)polymer (E.1) and/or polyalkylene terephthalate (E.2);
• and
• F) from 0 to 20 parts by weight (based on the sum of components A+B+C) of at least one further additive,
• wherein the weight ratio of component B to the phosphorus content from component C is in a range of from 16 to 22 to 1, and
• wherein the composition is free of rubber-free polyalkyl (alkyl)acrylate wherein the composition has
• a fire behavior UL94V of V0 and a transition temperature tough/brittle notched impact test of no greater than −15° C.

A composition consisting of

• A) from 77 to 90 parts by weight (based on the sum of components A+B+C) of linear and/or branched aromatic polycarbonate and/or aromatic polyester carbonate,
• B) from 6 to 12 parts by weight (based on the sum of components A+B+C) of graft polymer having
• B.1 from 5 to 30 wt. % (in each case based on the graft polymer B) of a shell of at least one vinyl monomer and
• B.2 from 95 to 70 wt. % (in each case based on the graft polymer B) of one or more graft bases of silicone-acrylate composite rubber,
• C) from 4 to 10 parts by weight (based on the sum of components A+B+C) of phosphorus compounds according to formula (VIII)
• wherein
• R1, R2, R3 and R4, independently of one another, represent optionally halo-substituted C1-C8-alkyl, in each case optionally halo- and/or alkyl-substituted C5-C6-cycloalkyl, C6-C10-aryl or C7-C12-aralkyl,
• the substituents n independently of one another represent 0 or 1,
• the substituents q independently of one another represent 0, 1, 2, 3 or 4,
• N represents from 0.1 to 10,
• R5 and R6, independently of one another, represent C1-C4-alkyl, or halogen, and
• Y represents a single bond, C1-C7-alkylidene, C1-C7-alkylene, C5-C12-cyclo-alkylene, C5-C12-cycloalkylidene, —O—, —S—, —SO—, —SO2— or —CO—,
• D) from 0 to 3 parts by weight (based on the sum of components A+B+C) of anti-dripping agents, and
• E) from 0 to 3 parts by weight (based on the sum of components A+B+C) of thermoplastic vinyl (co)polymer (E.1) and/or polyalkylene terephthalate (E.2);
• and
• F) from 0 to 20 parts by weight (based on the sum of components A+B+C) of at least one further additive,
• wherein the weight ratio of component B to the phosphorus content from component C is in a range of from 16 to 22 to 1, and
• wherein the composition is free of rubber-free polyalkyl (alkyl)acrylate wherein the composition has
• a fire behavior UL94V of V0 and a transition temperature tough/brittle notched impact test of no greater than −15° C.

A composition consisting of

• A) from 77 to 90 parts by weight (based on the sum of components A+B+C) of linear polycarbonate,
• B) from 6 to 12 parts by weight (based on the sum of components A+B+C) of graft polymer having
• B.1 from 5 to 30 wt. % (in each case based on the graft polymer B) of a shell of at least one vinyl monomer and
• B.2 from 95 to 70 wt. % (in each case based on the graft polymer B) of one or more graft bases of silicone-acrylate composite rubber,
• C) from 4 to 10 parts by weight (based on the sum of components A+B+C) of phosphorus compounds according to formula (VIII)
• wherein
• R1, R2, R3 and R4, independently of one another, represent optionally halo-substituted C1-C8-alkyl, in each case optionally halo- and/or alkyl-substituted C5-C6-cycloalkyl, C6-C10-aryl or C7-C12-aralkyl,
• the substituents n independently of one another represent 0 or 1,
• the substituents q independently of one another represent 0, 1, 2, 3 or 4,
• N represents from 0.1 to 10,
• R5 and R6, independently of one another, represent C1-C4-alkyl, or halogen, and
• Y represents a single bond, C1-C7-alkylidene, C1-C7-alkylene, C5-C12-cyclo-alkylene, C5-C12-cycloalkylidene, —O—, —S—, —SO—, —SO2— or —CO—,
• D) from 0 to 3 parts by weight (based on the sum of components A+B+C) of anti-dripping agents, and
• F) from 0 to 20 parts by weight (based on the sum of components A+B+C) of at least one further additive,
• wherein the weight ratio of component B to the phosphorus content from component C is in a range of from 16 to 22 to 1,
• wherein the composition is free of rubber-free polyalkyl (alkyl)acrylate, and
• wherein the composition is free of thermoplastic vinyl (co)polymers (E.1) and polyalkylene terephthalates (E.2) wherein the composition has
• a fire behavior UL94V of V0 and a transition temperature tough/brittle notched impact test of no greater than −15° C.