Polyoxymethylene copolymer-based dye preparation for molding, gives good workability and low formaldehyde emission

摘要

Polyoxymethylene copolymer-based dye preparation Dye preparation comprises: (i) 15-80 (20-60, especially 20-45) wt.% colorant from carbon black and (in)organic pigments; (ii) 2-15 (2-10, especially 4-10) wt.% nitrogen-containing stabilizers; (iii) 0-15 (0-10, especially 3-5) wt.% dispersion aids; (iv) remainder polyoxymethylene copolymer (POM); and optionally (v) UV stabilizers and other conventional additives.