Low Emission, UV Stabilized High Strength Acetal Copolymer

A polymer composition comprising:

• an oxymethylene copolymer comprising oxymethylene units and oxyalkylene units having at least two carbon atoms and a proportion of terminal alkyl ether groups and of terminal hydroxyalkylene groups having at least two carbon atoms, the proportion of terminal alkyl ether groups, based on all terminal groups, being at least 80% and the proportion of terminal hydroxyalkylene groups having at least two carbon atoms, based on all terminal groups, being up to 20%, the oxymethylene copolymer being present in the polymer composition in an amount from about 60% to about 98% by weight;
• an emission control agent comprising allantoin being present in the polymer composition in an amount from about 0.01% to about 5% by weight;
• at least one light stabilizer, wherein the light stabilizer comprises a hindered amine, the hindered amine having a pH of from about 6 to about 8, the hindered amine being present in the polymer composition in an amount from about 0.1% to about 2% by weight;
• at least one coloring agent;
• and
• wherein the emission control agent and the at least one light stabilizer are present in the polymer composition in an amount such that the polymer composition exhibits a formaldehyde emission pursuant to VDA 275 of less than about 15 ppm and exhibits a color difference value (DEcmc) of less than about 5 after exposure to ten cycles of 280 kJ/m2 irradiation in a xenon arc weatherometer operated according to Volkswagen test PV1303.