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US 2019/0338116 A1Published application
Mass Colored Polymer Composition For Use In Medical Technology Applications
AssigneeCelanese Sales Germany GmbH
InventorsKirsten Markgraf, Kai-Uwe Toennes, Thomas Seelmann, Bruce M. Mulholland
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Abstract
A medical grade polyoxymethylene polymer composition is disclosed that has been mass colored. The composition is particularly formulated so as to meet the standards of various governmental and safety requirements needed for use in medical applications and/or in food contact applications. In one embodiment, the polymer composition is formulated to meet the standards of USP Class VI testing and/or ISO 10993 testing.
Claims23
A mass colored polymer composition for medical or food container applications comprising:
- a polyoxymethylene polymer having a melt volume flow rate of less than about 30 cm3/10 min when tested at 190° C. under a load of 2.16 kg, the polyoxymethylene polymer being present in the polymer composition in an amount of at least 70% by weight;
- at least one coloring agent, the at least one coloring agent being present in the polymer composition sufficient to mass color the composition, the one or more coloring agents being present in the polymer composition in an amount less than about 15% by weight;
- and
- wherein the polyoxymethylene polymer and the at least one coloring agent are selected so that the polymer composition passes USP Class VI and ISO 10993 testing, the polymer composition being latex free and containing no animal byproducts.
1 more element
Dependencies are inferred from the claim text.