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US 2022/0033594 A1Published application
Antimicrobial polymer composition for shelf-life extension
AssigneeClariant International Ltd.
InventorsEdson Alexandre Marçal ALEXANDRE, Beatriz Valfogo MACHADO
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Abstract
Polymer composition are provided comprising a thermoplastic polymer matrix, 50 to 6000 ppm of zinc pyrithione, 50 to 6000 ppm of silver, 100 to 6000 ppm of a zeolite, and optionally 0 to 5% by weight of one or more polymer additives. The invention also relates to a masterbatch and a method for preparing such polymer composition. The present invention further relates to a food packaging comprising or consisting of such polymer composition and to the use thereof for increasing shelf-life of foodstuff such as baked goods.
Claims15
A polymer composition comprising:
- (A) a thermoplastic polymer matrix (component A);
- (B) 50 to 6000 ppm, related to the polymer composition, of zinc pyrithione (component B);
- (C) 50 to 6000 ppm, related to the polymer composition, of silver, optionally in uncharged form or in ionic form comprised in a silver salt (component C);
- (D) 100 to 6000 ppm, related to the polymer composition, of a zeolite (component D);
- and optionally
- (E) 0 to 5% by weight, related to the polymer composition, of one or more polymer additives (component E).
3 more elements
Dependencies are inferred from the claim text.