Patent ID: 8188169
Filing Date: 2012-05-29
Classification: C08L

Abstract:
1. A polyoxymethylene composition comprising (a) 90 to 99.9 weight percent of at least one polyoxymethylene polymer, and (b) 0.1 to 10 weight percent of at least one polysaccharide selected from amylopectin and amylodextrin; wherein the weight percent of each of a) and b) is based on the total amount a) and b); and (c) optionally, 0.1 to 3.0 weight percent of a polymeric stabilizer containing formaldehyde reactive nitrogen groups; d) a hydroxyl containing polymer selected from the group consisting of poly(vinyl alcohol), poly(ethylene vinyl alcohol), poly(hydroxyethyl methacrylate), poly(hydroxypropyl methacrylate), and hydrolyzed vinyl acetate/methacrylate copolymer; (e) optionally, 1 to 40 weight percent of reinforcing agents, wherein the weight percent of each of (c), (d) and (e) is based on the total composition; and wherein the pH of an aqueous suspension of 1 to 10 weight percent of the polysaccharide (b) is 5.5 to 8.