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US 2024/0417546 A1Published application
Polyoxymethylene Composition in Food Handling Applications
AssigneeCelanese International Corporation
InventorsQamer Zia, Kai-Uwe Toennes, Kirsten Markgraf
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Abstract
The present disclosure is directed to a polyacetal, or polyoxymethylene (POM), base composition which contains an additive package containing additives suitable for food processing applications. Of particular advantage, POM produced according to the present disclosure may demonstrate low formaldehyde emissions, extractables, or both, when measured by standard methods without containing any formaldehyde scavenger packages.
Claims14
A polymer composition comprising:
- a polyoxymethylene polymer present in the polymer composition in an amount greater than about 60% by weight, the polyoxymethylene polymer having a melt volume flow rate of from about 1 cm3 per 10 min to about 80 cm3 per 10 min when tested at a temperature of 190° C. and at a load of 2.16 kg;
- a lubricant;
- an acid scavenger;
- a copolyamide;
- an antioxidant;
- and
- wherein the polymer composition is free of a guanamine, urea or melamine formaldehyde scavenger and displays a formaldehyde emission of less than about 15 ppm when tested according to VDA Test 275 and displays a formaldehyde extractable content of less than 15 ppm when tested according to a formaldehyde extractable test in water at a temperature of 40° C. for 10 days.
4 more elements
Dependencies are inferred from the claim text.