Colorant Compatible Oxygen Scavenging Polymer Compositions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current oxygen scavenging polymer compositions face challenges when combined with colorants, as the addition of colorants often interferes with the oxygen scavenging properties, requiring iterative reformulation and limiting the use of desirable colorants that are incompatible with the composition.
Innovation Solution
The development of melt blended polymer compositions that include a base polymer, an N-allylic or N-benzylic amide compound, a transition metal in a positive oxidation state, a visually effective amount of colorant, and a nonionic colorant harmonizer, which maintains the oxygen scavenging capability while allowing for the use of colorants without significant interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a colorant is added to an oxygen scavenging polymer composition, then the composition gains coloring capability, but the oxygen scavenging property deteriorates
Solution Approach 1:
A nonionic surfactant is introduced as an intermediary substance between the colorant and the oxygen scavenging system. The surfactant modifies the interface between these components, preventing the colorant from interfering with oxygen scavenging while maintaining coloring capability. This mediator allows incompatible substances to coexist without negative interactions.
Solution Approach 2:
The invention changes the chemical parameters of the system by introducing a nonionic surfactant with specific molecular structure and properties. This parameter change modifies the interaction between colorant and oxygen scavenging agents, allowing the system to achieve both coloring and oxygen scavenging functions simultaneously without the need for iterative reformulation.
2Reliability
If conventional colorants are used in oxygen scavenging compositions, then the formulation process becomes iterative and time-consuming, but the oxygen scavenging capability is maintained
Solution Approach 1:
The nonionic surfactant is incorporated into the formulation from the beginning to preemptively prevent interference between colorants and oxygen scavenging agents. This preliminary action eliminates the need for iterative testing and reformulation, as the surfactant ensures compatibility between components before any performance issues arise.
3Reliability
If desirable colorants that are incompatible with the composition are avoided, then oxygen scavenging properties are maintained, but the versatility of colorant selection is limited
Solution Approach 1:
The nonionic surfactant serves multiple functions simultaneously: it acts as a compatibility modifier, an interface agent, and a enabler for diverse colorant selection. This multi-functional approach allows any desirable colorant to be used with oxygen scavenging compositions without compromising performance, greatly expanding colorant selection flexibility.
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 solution effectively mitigates the interference of colorants on oxygen scavenging properties, enabling the use of colorants that would otherwise hinder the oxygen scavenging process, thereby maintaining or improving the composition's ability to reduce oxidative damage in packaging materials.
Implementation Method 1
an N-allylic amide compound or N-benzylic amide compound present in an amount of from about 0.10 to about 10 weight percent of the composition
Implementation Method 2
a transition metal in a positive oxidation state, the metal present in an amount of from about 10 ppm to about 400 ppm
Data Source
AI summary
The disclosure relates to oxygen scavenging polymer compositions, methods of making the compositions, articles prepared from the compositions, and methods of making the articles. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.