Abstract:
A multilayer container having enhanced gas barrier properties comprises at least two outer layers comprising a polymer matrix, and at least one barrier layer disposed between the at least two outer layers. The at least one barrier layer comprises a first polymer composition comprising a polymer matrix and a low molecular weight additive. In a particular embodiment, the low molecular weight additive comprises a purine derivative, such as caffeine, and is present in the multilayer container in an amount in the range of about 0.2 to about 10 weight percent of the container.
Abstract:
The present invention relates to a composition comprising a colored recycled polyethylene terephthalate (RPET) and an opacifying material. The composition can further comprise a virgin polyethylene terephthalate (PET), a high gas barrier or an oxygen scavenging compound. Suitable opacifying material, suitable high gas barrier polymer and suitable oxygen scavenging compound are disclosed herein. Other embodiments of the present invention include articles produced from these compositions and processes for producing these compositions.
Abstract:
The present invention comprises a blend of polyester and a partially aromatic polyamide with an ionic compatibilizer and a cobalt salt. This blend can be processed into a container that has both active and passive oxygen barrier and carbon dioxide barrier properties at an improved color and clarity than containers known in the art. The partially aromatic polyarnide is preferably metaxylylene adipamide. The ionic compatibilizer is preferably 5-sodiumsulfoisophthalic acid or 5zincsulfoisophthalic acid, or their dialkyl esters such as the dimethyl ester (SIM) and glycol ester (SIPEG). The cobalt salt is selected form the class of cobalt acetate, cobalt carbonate, cobalt chloride, cobalt hydroxide, cobalt naphthenate, cobalt oleate, cobalt linoleate, cobalt octoate, cobalt stearate, cobalt nitrate, cobalt phosphate, cobalt sulfate, cobalt (ethylene glycolate), or mixtures of two or more of these. The partially aromatic polyamide is present in a range from about I to about 10 wt. % of said composition. The ionic compatibilizer is present in a range from about 0.1 to about 2.0 mol-% of said composition. The cobalt salt is present in a range from about 20 to about 500 ppm of said composition.
Abstract:
Methods are provided for making a polylactic acid article. The methods may include the steps of providing an article comprising polylactic acid; supporting the article using a carrier support system; and curing the article with heat. The step of curing the article is effective to improve one or more properties of the article. Articles comprising polylactic acid also are provided having improved properties. Methods also are provided for preparing a beverage including the steps of providing a pod comprising polylactic acid, wherein the pod has been cured with heat while being supported by a carrier support system; placing a beverage material in the pod; placing a hot liquid into the pod; brewing the beverage material and hot liquid in the pod to create a beverage; and removing the beverage from the pod.
Abstract:
This invention relates to a method of making a bio-based PET packaging and particularly to a method of producing a bio-based PET from at least one bio-based material comprising: a) forming at least one PET component from at least one bio-based material, wherein the at least one PET component is selected from a monoethylene glycol ("MEG"), a terephthalic acid ("TA"), and combinations thereof; (b) processing said bio-based PET component into a bio-based PET.
Abstract:
A container comprising a polyester composition with enhanced mechanical properties is provided. The polyester composition comprises a polyester and a creep control agent. In particular embodiments, the polyester composition comprises a polyester, a creep control agent, and a gas barrier additive. In particular embodiments, the creep control agents are molecules or polymers comprising dianhydrides, bis-lactams, bis-oxazoles, and epoxides.
Abstract:
A multilayer container having enhanced gas barrier properties comprises at least two outer layers comprising a polymer matrix, and at least one barrier layer disposed between the at least two outer layers. The at least one barrier layer comprises a first polymer composition comprising a polymer matrix and a low molecular weight additive. In a particular embodiment, the low molecular weight additive comprises a purine derivative, such as caffeine, and is present in the multilayer container in an amount in the range of about 0.2 to about 10 weight percent of the container.
Abstract:
The present invention describes both a stretch-blow-molded opaque polyester container and a method of making it. The container, typically a beverage bottle has less than 15% transmission of visible light (500 nm) through a 0.4 millimeter wall thickness. It contains from about 0.1 to about 5wt. % of said opacifying material. The opacifying material may be any material compatible with polyester resin. The method of making the container includes introducing the opacifying material during polymerization, or prepared as a master batch for mixing with the polymer. Selection of certain opacifying materials can also result in favorable reheat properties, gas permeation-barrier improvements, and when the resin contains both opacifying material and oxygen scavenger there can be a synergistic effect with respect to CO 2 permeation.
Abstract:
A method for making a conductive network of sintered silver comprises preparing a conductive ink comprising a silver compound and a binder; depositing the conductive ink on a substrate and applying an external energy source to the deposited conductive ink to dry the ink; and applying an external energy source to the dried ink to decompose the ink to elemental silver and to sinter the elemental silver into a conductive network.
Abstract:
The present invention is directed to methods, devices and systems for making polymer preforms having a controlled amount of stress and molecular orientation, as well as to the polymer preforms formed thereby. The present invention also extends to methods for making polymer containers from such polymer preforms, as well as to the polymer containers formed thereby and packaged beverages comprising such containers. Advantageously, the polymer containers of the present invention offer improved performance, including but not limited to extended shelf-life.