Oxygen scavenger block copolymers and compositions
申请人:Ebner L. Cynthia
公开号:US20050048287A1
公开(公告)日:2005-03-03
An oxygen scavenger composition includes a block co-polymer having at least one block including a polyester condensation polymer segment having cycloalkenyl group(s) or functionality directly or indirectly bonded to the polymer chain of said block, and having at least one second block including a polymer segment of a thermoplastic, film forming material. The block copolymer 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, and to provide compositions exhibiting low tack which can be readily formed and processed using conventional film forming equipment. A packaging material, such as a film or laminated product suitable for packaging applications, can include the oxygen scavenger composition.
Oxygen scavenger compositions derived from isophthalic acid and/or terephthalic acid monomer or derivatives thereof
申请人:Ebner L. Cynthia
公开号:US20050048285A1
公开(公告)日:2005-03-03
An oxygen scavenger composition includes mer units that have at least one cycloalkenyl group or functionality and, further, has mer units derived from isophthalic acid or terephthalic acid or certain derivatives thereof. The oxygen scavenger composition has been found to act as an oxygen scavenger under both ambient and refrigeration conditions, to be compatible with conventional film forming packaging materials, to inhibit undesirable oligomer formation and oxidation by-product formation, and to be readily formable and processable using conventional film forming equipment. A film and laminated product having said oxygen scavenger composition are also disclosed.
氧清除剂组合物包括具有至少一个环烯基或官能团的 mer 单元,还包括从间苯二甲酸或对苯二甲酸或其某些衍生物中提取的 mer 单元。研究发现,氧清除剂组合物在环境和冷藏条件下都能起到氧清除剂的作用,与传统的成膜包装材料相容,能抑制不希望的低聚物形成和氧化副产物形成,并且易于使用传统的成膜设备成型和加工。此外,还公开了具有所述氧清除剂组合物的薄膜和层压产品。
Oxygen scavenger compositions
申请人:Havens Russell Marvin
公开号:US20050139806A1
公开(公告)日:2005-06-30
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.