초록 ▼

Active oxygen scavenging compositions and their use in packaging articles are disclosed. The compositions are all plastic materials and are typically deployed as at least one layer in a multi-layered wall of a packaging article such as a bottle, can or film. The compositions are usually used in conj

Active oxygen scavenging compositions and their use in packaging articles are disclosed. The compositions are all plastic materials and are typically deployed as at least one layer in a multi-layered wall of a packaging article such as a bottle, can or film. The compositions are usually used in conjunction with added transition metal catalyst to enhance the uptake of oxygen. Use of the compositions and package constructions disclosed serves to lengthen the shelf life of packaged oxygen sensitive substances and/or diminish the need for refrigeration of the packages.

대표청구항 ▼

1. An oxygen barrier laminar composition comprising a layer of packaging material and a layer of active oxygen scavenging copolycondensate comprising predominantly polycondensate segments and a minor amount of oxygen scavenging moiety segments; and wherein said copolycondensate (A) has a glass trans

1. An oxygen barrier laminar composition comprising a layer of packaging material and a layer of active oxygen scavenging copolycondensate comprising predominantly polycondensate segments and a minor amount of oxygen scavenging moiety segments; and wherein said copolycondensate (A) has a glass transition temperature above 60.degree. C. and scavenges oxygen in its solid state at ambient temperatures in the range of 0-60.degree. C. and (B) is devoid of ethylenic unsaturation.