Method for preparing composition suitable for electrostatic painting

1. A composition comprising, with respect to total weight of the composition:

(i) polybutylene terephthalate (PBT) in an amount between 40 and 70 wt %;

(ii) polyethylene terephthalate (PET) in an amount between 10 and 40 wt %;

(iii) a filler in an amount of between 10 and 30 wt %, wherein the filler is selected from the group consisting of glass fibers, talc, mica, wollastonite, glass beads and milled glass and combinations thereof; and

(iv) an electrically conductive additive in an amount between 2 and 10 wt %, wherein the electrically conductive additive is selected from the group consisting of carbon black, carbon fibers, graphite, carbon nanotubes, and graphene and combinations thereof; wherein

the composition has a melt viscosity of between 160 Pas and 400 Pas as determined according to ISO-11443-2014 at 270° C. and a shear rate of 265 1/s, and a volume resistivity of at most 10 5 Ohm.com when measured according to ASTM D257 on an injection molded test sample of 3 mm thickness and a diameter of 50 mm and coated with a gold layer on an upper and lower surface.

2. The composition according to claim 1 , wherein the filler is talc.

3. The composition according to claim 2 , wherein the talc has a particle size D-50 of between 5 μm and 20 μm and a D-97 of between 20 μm and 70 μm.

4. The composition according to claim 1 , wherein the electrically conductive additive is carbon black.

5. The composition according to claim 4 , wherein the carbon black has an oil absorption number of at least 300 ml/100 g, as measured according to ASTM D-2414, and wherein the carbon black is present in an amount of between 3 and 5 wt % with respect to the total weight of the composition.

6. A part comprising the composition according to claim 1 .

7. A painted part comprising the part according to claim 6 , and a coating layer of paint on the part.