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Oxygen Scavenging Dendrimers

A polymer, thermoplastic polymer technology, used in food science, rot-proof containers, transportation and packaging to solve problems such as insufficient removal of oxygen molecules

Inactive Publication Date: 2012-04-25
POLYONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] There are compounds known to scavenge oxygen molecules, but each source of oxygen molecules cannot be adequately removed because each source of oxygen affects the food or drink at different times

Method used

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  • Oxygen Scavenging Dendrimers
  • Oxygen Scavenging Dendrimers
  • Oxygen Scavenging Dendrimers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Example 1 and Comparative Examples A-C - Preparation of Compounds Containing Dendrimer

[0065] Table 2 shows the components and formulations under reactive extrusion conditions on a Prism 16mm 40L / D parallel twin-screw extruder.

[0066]

[0067] All Comparative Examples and Example 1 were melt compounded in a Prism 16 mm 40 L / D parallel twin screw extruder at a temperature of 250° C. and a speed of 250 RPM after manual premixing of the components. Even Comparative Example C underwent the same extrusion process in order to establish a complete comparative result. The resulting extrudates are pellets.

[0068] Using Carver Model 3392 hydraulic press in Teflon TM The films of Example 1 and Comparative Examples A-C were prepared by compression molding pellets of each sample between coated aluminum foils. For each film, a 3.0 gram sample was first heated at 265°C for 15 seconds, then molded at 265°C and less than 1 ton pressure for 30 seconds, and then cooled in an...

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Abstract

A method and system for oxygen molecule scavenging is disclosed. The system employs as an amphiphilic dendritic polymer as the reducing agent for oxygen molecules in a thermoplastic compound. Clarity of the compound, nearly the same as thermoplastic matrix itself in the compound, is achieved by the addition of an epoxy-functional styrene-acrylate oligomer. Food and beverage containers now made of polyethylene terephthalate can be molded from the compound and have substantially the same haze as the polyethylene terephthalate itself but with the oxygen scavenger to maintain freshness of the food or beverage from oxidation.

Description

[0001] priority claim [0002] This application claims priority to US Provisional Patent Application Serial No. 61 / 179,296 (Attorney Docket No. 12009005), filed May 18, 2009, which is hereby incorporated by reference. field of invention [0003] The present invention involves the use of dendrimers as reducing agents (also known as antioxidants) to scavenge oxygen in containers and packaging made from thermoplastic compounds. Background of the invention [0004] Food spoilage has plagued humans for thousands of years. Containers for food have evolved from stone to pottery to metal to glass to plastic, especially for single-use food and drink. [0005] The shelf life of food and beverages is affected by the oxidation of molecular oxygen from the space in the container not occupied by the food or beverage (“headspace oxygen”), from the container walls or the body of the closure (“intrinsic oxygen”) , and infiltration through the vessel wall (“permeation oxygen”). In addition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L3/3436A23L1/015B65D81/24A23L5/20
CPCB65D1/0207C08L101/00B65D81/266A23L1/015C08L101/005C08G81/021A23L3/3436C08L67/02A23L5/20Y10T428/1352C08L25/14
Inventor 胡灵R·W·阿瓦基扬
Owner POLYONE CORP