Polyoxymethylene with improved resistance to acids and its use
AssigneeTicona LLC
InventorsCarsten Woerner, Ursula Ziegler, Kurt Witan, Klaus Kurz
Life of this patent
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Abstract
Polyoxymethylene with improved resistance to acids, comprising A from 84 to 99.79% by weight of at least one polyoxymethylene homo- or copolymer, B from 0.1 to 5% by weight of at least one polyalkylene glycol, C from 0.1 to 10% by weight of zinc oxide, and D from 0.01 to 1% by weight of one or more nitrogen-containing costabilizers, where the total of the percentages by weight of components A to D is 100%. This polyoxymethylene is particularly advantageous when used for producing moldings for use in contact with aggressive acids or with aggressive acid-containing cleaning agents, in particular for applications in the sanitary sector or the white goods sector.
Claims17
A polyoxymethylene composition comprising
- A from 84 to 99.79% by weight of at least one polyoxymethylene homo- or copolymer,
- B from 0.1 to 5% by weight of at least one polyalkylene glycol,
- C from 0.1 to 10% by weight of zinc oxide, and
- D from 0.01 to 1% by weight of one or more nitrogen-containing costabilizer and said nitrogen-containing costabilizer comprises melamine.
A molding made from a polyoxymethylene composition comprising
- A from 84 to 99.79% by weight of at least one polyoxymethylene homo- or copolymer,
- B from 0.1 to 5% by weight of at least one polyalkylene glycol,
- C from 0.1 to 10% by weight of zinc oxide, and
- D from 0.01 to 1% by weight of one or more nitrogen-containing costabilizer wherein the molding when in contact with aggressive acids or with aggressive acid-containing cleaning agents is resistive to said aggressive acids or said aggressive acid-containing cleaning agents and said nitrogen-containing costabilizer comprises melamine.
Dependencies are inferred from the claim text.