Oxygen-Scavenging Packaging Composition with Oxidation Catalyst
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Solution Overview
Problem
Conventional plastic packaging materials are inadequate in blocking oxygen transmission, leading to short shelf life of oxygen-sensitive products, and existing oxygen-scavenging materials in plastics suffer from issues like loss of adhesion, off tastes, poor clarity, and insufficient oxygen-scavenging capacity.
Innovation Solution
An oxygen-scavenging composition incorporating an oxygen-scavenging component with an aromatic ring, a —CH(R1)2 group, and an electron-donating group, combined with an oxidation catalyst and a thermoplastic polymer, to enhance oxygen-scavenging properties and mechanical properties of packaging materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional plastic packaging is used, then cost is reduced and flexibility is improved, but oxygen transmission increases leading to short shelf life
Solution Approach 1:
The patent incorporates oxygen-scavenging materials into plastic packaging containers to create a composite structure. The plastic container serves as the base material providing flexibility and cost benefits, while the integrated oxygen-scavenging layer actively removes oxygen that penetrates through the plastic, thereby extending shelf life without sacrificing the inherent advantages of plastic packaging.
2Productivity
If oxygen-scavenging materials are incorporated into plastic containers, then oxygen levels are reduced extending shelf life, but adhesion is lost and delamination occurs
Solution Approach 1:
The patent modifies the chemical and physical parameters of the oxygen-scavenging material and its interface with the plastic container. By adjusting composition ratios, molecular weight, functional group types, and processing conditions, the invention achieves optimal balance between oxygen-scavenging effectiveness and adhesion strength, preventing delamination while maintaining shelf life extension.
3Productivity
If oxygen-scavenging materials are incorporated into plastic containers, then oxygen levels are reduced, but off tastes and odors appear in packaged products
Solution Approach 1:
The patent designs the oxygen-scavenging material with specific local properties including particular functional groups (amine, amide, carbonyl), controlled molecular weight ranges, and specific compositional ratios. These localized chemical characteristics enable effective oxygen scavenging while minimizing the generation of off-tastes and odors, allowing the material to perform its function without contaminating the packaged product.
4Productivity
If oxygen-scavenging materials are incorporated into plastic containers, then oxygen levels are reduced, but clarity of packaging deteriorates
Solution Approach 1:
The patent optimizes physical parameters including molecular weight, crystallinity, and compositional ratios of the oxygen-scavenging material to maintain optical clarity. By controlling these parameters within specific ranges and selecting appropriate base polymers, the invention achieves a balance between oxygen-scavenging capacity and visual transparency, allowing consumers to see through the packaging while still benefiting from extended shelf life.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition effectively extends the shelf life of oxygen-sensitive products by significantly reducing oxygen levels within packaging, improving adhesion, clarity, and scavenging efficiency while maintaining cost-effectiveness.
Implementation Method 1
The oxygen-scavenging composition preferably includes an oxidation catalyst, where the catalyst is preferably capable of enhancing oxygen scavenging of the OS composition
Implementation Method 2
The oxygen-scavenging component preferably includes an aromatic ring, a —CH(R1)2 group attached to a first atom of the aromatic ring, and an electron-donating group attached to a second atom of the aromatic ring, which is preferably configured to activate the —CH(R1)2 group for purposes of oxygen-scavenging
Data Source
AI summary
An oxygen-scavenging composition is provided that includes an oxygen-scavenging component and an oxidation catalyst. In preferred embodiments, the oxygen-scavenging composition includes a thermoplastic polymer that may optionally include the oxygen-scavenging composition as a portion thereof. In preferred embodiments, the composition is suitable for use in packaging articles.