The present invention is directed to an oxygen scavenger composition comprising a mixture of (i) a polyester polymer composed of polymer segments containing cycloalkenyl group or functionality; and (ii) an ester type polymer selected from (a)a polyester having a high content of alkylene groups; (b) a polylactone; and (c) a polyvinylacetate having at least about 50 weight percent vinyl acetate mer units therein. The present polymer composition has been found to act as an oxygen scavenger agent under both ambient and refrigerated conditions, to be compatible with conventional film forming packaging materials, to provide compositions exhibiting low tack, and to be capable of being readily processed using conventional film forming equipment.
本发明涉及一种氧清除剂组合物,该组合物由以下物质的混合物组成:(i) 由含有环烯基或官能团的聚合物段组成的聚酯聚合物;(ii) 选自以下物质的
酯类聚合物:(a) 烷基含量高的聚酯;(b) 聚内酯;(c) 聚
醋酸乙烯酯,其中
醋酸乙烯酯合并单元的重量百分比至少约为 50%。研究发现,本聚合物组合物在常温和冷藏条件下均可作为氧清除剂,与传统的成膜包装材料相容,提供低粘性的组合物,并可使用传统的成膜设备进行加工。