POLYCARBONATE-ASA BLENDS WITH ANTISTATIC PROPERTIES USING SULFONATED ALKANES

1 - 14 . (canceled)

15 . A thermoplastic molding composition comprising the following components:

a) 1 to 97.5% by weight, based on the thermoplastic molding composition, of at least one aromatic polycarbonate A;

b) 1 to 97.5% by weight, based on the thermoplastic molding composition, of one or more graft polymer B made from:

b1) 40 to 80% by weight, based on the graft polymer B, of an graft base made from an elastomeric polymer B1 based on alkyl acrylates having from 1 to 8 carbon atoms in the alkyl radical, and having a glass transition temperature below 0° C.;

b2) 20 to 60% by weight, based on the graft polymer B, of a graft B2 made from

b21) 60 to 95% by weight, based on the graft B2, of styrene or of substituted styrenes B21 of the formula I:

wherein:

R is C 1 -C 8 -alkyl or hydrogen;

R 1 is C 1 -C 8 -alkyl or hydrogen, with the provision that not both of R and R 1 are hydrogen; and

n is 1, 2, or 3;

or a mixture of these compounds; and

b22) 5 to 40% by weight, based on the graft B2, of at least one unsaturated nitrile B22;

c) 1 to 97.5% by weight, based on the thermoplastic molding composition, of at least one thermoplastic copolymer C made from:

c1) 60 to 85% by weight, based on the thermoplastic copolymer C, of styrene or of substituted styrenes C1 of the formula I, or a mixture of these compounds; and

c2) 15 to 40% by weight, based on the thermoplastic copolymer C, of at least one unsaturated nitrile C2;

d) 0.5 to 10% by weight, based on the thermoplastic molding composition, of at least one antistatic agent D selected from sulfonated alkanes, wherein the at least one antistatic agent D is selected from secondary alkane sulfonates, having from 6 to 40 carbon atoms;

e) 0 to 50% by weight, based on the thermoplastic molding composition, of at least one filler E; and

f) 0 to 40% by weight, based on the thermoplastic molding composition, of at least one further additive F.

16 . The thermoplastic molding composition according to claim 15 , wherein the at least one aromatic polycarbonate A is based on biphenols of the formula II:

where X is a single bond, C 1 -C 3 -alkylene, C 2 -C 3 -alkylidene, C 3 -C 6 -cycloalkylidene, or else —S— or —SO 2 —.

17 . The thermoplastic molding composition according to claim 15 , wherein the graft bases B1 of the graft polymer B is composed of:

b11) 70 to 99.9% by weight, based on the graft base B1, of at least one alkyl acrylate B11 having from 1 to 8 carbon atoms in the alkyl radical;

b12) 0 to 29.5% by weight, based on the graft base B1, of another copolymerizable monoethylenically unsaturated monomer B12; and

b13) 0.1 to 5% by weight, based on the graft base B1, of a copolymerizable, polyfunctional, crosslinking monomer B13;

wherein the entirety of B11, B12, and B13 gives 100% by weight.

18 . The thermoplastic molding composition according to claim 15 , wherein the copolymer C is composed of 70 to 83% by weight, based on the copolymer C, of styrene and from 17 to 30% by weight, based on the copolymer C, of acrylonitrile.

19 . The thermoplastic molding composition according to claim 15 , wherein the thermoplastic molding composition comprises from 2 to 5% by weight of at least one antistatic agent D wherein the at least one antistatic agent D is selected from sulfonated alkanes according to the following formula IV:

wherein x and y are, independently from each other, a number from 1 to 38, with the provision that x+y is a number from 5 to 39; and

M is selected from hydrogen, alkali metal salt, or earth alkali metal salt.

20 . The thermoplastic molding composition according to claim 15 , wherein the composition comprises from 1 to 50% by weight, based on the thermoplastic molding composition, of at least one filler E selected from particulate mineral fillers E1 and fibrous fillers E2.

21 . A process for producing a thermoplastic molding composition according to claim 15 , wherein the components A to D and, optionally, components E and F are mutually mixed with one another in any desired order at temperatures of 100 to 300° C.

22 . A molding, fiber, or film made from a thermoplastic molding composition according to claim 15 .

23 . The molding, fiber, or film according to claim 22 , wherein the the molding, fiber, or film is an automotive component or part of electronic equipment.

24 . The molding, fiber, or film according to claim 22 , wherein the the molding, fiber, or film is a motor vehicle interior.

25 . A process for imparting antistatic properties into a thermoplastic molding composition by incorporating a secondary alkane sulfonate having from 6 to 40 carbon atoms as antistatic agent D in the thermoplastic molding composition, wherein the thermoplastic molding composition comprises:

a) 1 to 97.5% by weight, based on the thermoplastic molding composition, of at least one aromatic polycarbonate A;

b) 1 to 97.5% by weight, based on the thermoplastic molding composition, of one or more graft polymer B made from:

b1) 40 to 80% by weight, based on the graft polymer B, of an graft base made from an elastomeric polymer B1 based on alkyl acrylates having from 1 to 8 carbon atoms in the alkyl radical, on ethylene-propylene, on dienes, or on siloxanes, and having a glass transition temperature below 0° C.;

b2) 20 to 60% by weight, based on the graft polymer B, of a graft B2 made from:

b21) 60 to 95% by weight, based on the graft B2, of styrene or of substituted styrenes B21 of the formula I:

wherein:

R is C 1 -C 8 -alkyl or hydrogen;

R 1 is C 1 -C 8 -alkyl or hydrogen, with the provision that not both of R and R 1 are hydrogen; and

n is 1, 2 or 3;

or a mixture of these compounds; and

b22) 5 to 40% by weight, based on the graft B2, of at least one unsaturated nitrile B22; and

c) 1 to 97.5% by weight, based on the thermoplastic molding composition, of at least one thermoplastic copolymer C made from:

c1) 60 to 85% by weight, based on the thermoplastic copolymer C, of styrene or of substituted styrenes C1 of the formula I, or a mixture of these compounds; and

c2) 15 to 40% by weight, based on the thermoplastic copolymer C, of at least one unsaturated nitrile C2.