Polyoxymethylene molding compositions, their use, and moldings produced therefrom

A ground molding composition comprising

• a) a homogenized compounded material composed of
• i) from 60% to 99.99% by weight of at least one polyoxymethylene homo- and/or copolymer,
• ii) 0.01% to 30% by weight of an impact modifier, wherein the impact modifier is a thermoplastic polyester elastomer, wherein the thermoplastic polyester elastomer used comprises a polyetherester elastomer, wherein the thermoplastic polyester elastomer is a polyester block copolymer consisting of two segments of which one derives from an aromatic dibasic acid and from a short-chain aliphatic diol, and the other derives from an aromatic dibasic acid and from a long-chain diol, wherein the aromatic dibasic acid is dimethyl terephthalate, the short-chain diol is 1,4-butanediol, and the long-chain diol is polytetramethylene ether glycol at least one impact modifier selected from the group consisting of polyurethanes, polyesters, and combinations thereof, and
• iii) from 0 to 30% by weight of other additives selected from the group consisting of antioxidants, acid scavengers, formaldehyde scavengers, UV stabilizers, adhesion promoters, lubricants, nucleating agents, mold-release agents, fillers, reinforcing materials, antistatic agents, dyes, pigments, additives conferring electrical conductivity, and combinations thereof, which
• b) is a powder at least 90% by weight of whose particles have a grain size of <600 μm and a median grain size (D50) of from 100 to 500 μm.