This invention discloses a process and a necessary article to simultaneously thermally treat at least two thermoplastics. The process utilizes the necessary compartmentalized or zoned pellet construction wherein the major amount of each thermoplastic component is located within individual compartments or zones of the pellet such that the components of the reaction during thermal processing and/or reactions with compounds in the atmosphere such as oxygen are less than the reaction if the thermoplastics were homogeneously dispersed in the pellet. This invention allows the components of the multi-component pellets to be thermally treated together without significant degradation and/or stored in air or in the presence of oxygen without significant degradation.

Disclosed is a process and article to simultaneously thermally treat at least two thermoplastics when one of the thermoplastics is an oxygen inert material and the other is an oxygen sensitive material, and the article also contains a promoter that converts the oxygen sensitive material to an oxygen reactive material when brought in contact with the oxygen sensitive material. The process utilizes the compartmentalized pellet, also known as a zoned pellet, construction wherein the major amount of each component is located within individual compartments or zones of the pellet such that the reactions with compounds in the atmosphere such as oxygen are less than the reaction if the thermoplastics were homogeneously dispersed in the pellet. This is of particular use to oxygen scavenging systems.

A transparent article includes a continuous polyester matrix having at least one incompatible filler dispersed therein. The incompatible filler provides domains in the polyester matrix, each domain having a particular dimension, thus providing a range of dimensions for the domains in the article. To create haze, the dimensions are within the range of from about 380 nm to about 720 nm. Once the range of dimensions is determined, a light absorbent composition can be found which absorbs light at a range of wavelengths that at least substantially covers the range of dimensions of the domains. In doing so, it has been found that the haze of the article can be substantially masked. Method for producing the article and for masking the haze are also provided.

A resin composition provides good optical properties when stretched and efficient oxygen-scavenging, the resin composition comprising a film-forming polyester and an effective amount of oxygen-scavenging particles, wherein the particles have a particle size distribution such that particles of less than about 25 microns in size do not exceed a concentration defined by a formula that includes the apparent density of the particles. Another resin composition comprises a film-forming polyester and from about 50 to about 2500 parts by weight of iron per million by weight of the resin, wherein the amount of iron particles having a size of less than about 20 microns does not exceed about 800 parts per million by weight of the resin. A method is also provided for incorporating high levels of oxygen-scavenging particles into a film-forming polyester resin composition with low haze when stretched.