Glass fiber reinforced polycarbonate molding compositions

1. A composition comprising

A) 10 to 85 parts by weight of a polycarbonate, and/or a polyester carbonate,

B) 10 to 50 parts by weight of a rubber-free vinyl copolymer of

B.1 70 to 80 wt. %, based on the total weight of component B, of styrene and

B.2 20 to 30 wt. %, based on the total weight of component B, of acrylonitrile

C) 9.94 to 50 parts by weight of sized glass fiber with

C.1 a glass fibers comprising at least one component selected from the group consisting of continuous strands, long glass fiber and chopped glass strands,

C.2 a size, and

C.3 optionally an adhesion promoter,

wherein the size C.2 consists essentially of

C.2.1 50 to 100 wt. %, based on the total weight of C.2, of an epoxy polymer comprising an epoxy resin made from,

C.2.1.1 epichlorohydrin and

C.2.1.2 bisphenol A as bisfunctional alcohol, and

C.2.2 0 to 50 wt. %, based on the total weight of C.2, of at least one polymer selected from the group consisting of the polyurethanes, polyolefins, acrylate-containing polymers, styrene-containing polymers and polyamides,

and wherein the sized glass fiber has a carbon content of 0.1 to 1 wt. %,

D) 0 to 2 parts by weight of a rubber-modified graft polymer which is substantially free from double bonds and is selected from the group consisting of acrylate rubber, silicone rubber and silicone-acrylate composite rubber, and

E) 0 to 10 parts by weight of a polymer additive, the composition being free from rubber-modified polymers which differ from component D),

wherein the composition has a stress cracking ESC resistance in rapseed oil at room temperature of at least 8 to 21 hours as measured under ISO 4599.

2. The composition of claim 1 , wherein:

A) is a polycarbonate present in an amount of from 43.52 to 61.94 parts by weight;

B) is present in an amount of from 25.72 to 29.85 parts by weight;

C) is present in an amount of from 9.94 to 19.90 parts by weight;

D) is present in an amount of from about 0 to about 0.5 parts by weight; and

E) is present in an amount of from about 0 to about 0.6 parts by weight.

3. The composition of claim 1 , having:

a modulus of elasticity of from 5070 to 10178 mPa; and

a melt viscosity (260° C.) is 198-233 Pas.

4. The composition of claim 1 , wherein:

A) is a linear polycarbonate based on Bisphenol A with a weight-average molecular weight of 25,000-32,000 g/mol;

B) is SAN copolymer with an acrylonitrile content of 23 wt % and a weight-average molecular weight of about 130,000 g/mole, or ABS polymer with an acrylonitrile content:butadiene:styrene ratio of 20:28:52 wt %, produced by emulsion polymerization;

C) is chopped glass strands with an average diameter of 13 μm and a size made of epoxy resin produced from epichlorohydrin and bisphenol A;

D) is styrene-acrylonitrile grafted acrylate-silicone composite rubber, produced by emulsion polymerization; and

E) is pentacrythritol tetrastearate, phosphite stabilizer, or a combination thereof.

5. The composition of claim 1 , consisting of the recited components.

6. The composition of claim 2 , consisting of the recited components.

7. The composition of claim 1 , wherein the impact resistance (a x 260° C. ) is 37 to 40.