Polyoxymethylene polymer composition for rotational molding applications

A container for fuels comprising:

• a seamless rotational molded housing defining an opening configured to receive a fluid, the housing including an interior enclosure surrounded by a wall and wherein the wall is made from a polymer composition comprising:
• a) a polyoxymethylene polymer having a melt flow rate of less than 4 g/10 min, wherein the polyoxymethylene polymer contains hydroxyl groups, the hydroxyl groups being present in an amount less than 10 mmol/kg;
• b) one or more impact modifiers being present in the polymer composition in an amount of from 4% by weight to 27% by weight, an impact modifier of the one or more impact modifiers having a melting temperature within 5° C. of a melting temperature of the polyoxymethylene polymer, the one or more impact modifiers comprising a thermoplastic copolyester elastomer, the thermoplastic copolyester elastomer comprising a block copolymer of polybutylene terephthalate and polyether segments;
• c) a polyalkylene glycol, the polyalkylene glycol being present in the polymer composition in an amount from 0.1 wt. % to 1 wt. %;
• and
• d) an ultraviolet light absorber, the ultraviolet light absorber being present in the polymer composition in an amount from 0.25 wt. % to 1 wt. %;
• wherein the wall of the housing has a normalized permeation of less than 4 g-mm/m2 per day at 40° C. according to SAE Test J2665.