Encapsulated Reducing Particle Dispersion for Oxygen Absorption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing oxygen-absorbing materials and particle dispersions face challenges in achieving high oxygen reduction and preservative performance while maintaining stability and compatibility with other components, particularly in liquid applications, and often require additional preservatives, leading to persistence and dispersion issues.
Innovation Solution
A reducing particle dispersion is developed, where reducing particles comprising a polymer with a specific structural unit encapsulate reducing components like polyphenols and preservative components, forming stable particles with antibacterial properties, which are dispersed in water, ensuring both oxygen absorption and preservative functions without adverse effects on other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reducing agents (antioxidants) are added to water-based liquids, then oxygen reduction performance is improved, but dispersion stability deteriorates and physical gelation or separation occurs
Solution Approach 1:
The reducing agent is segmented into individual particles with core-shell structure, where the reducing agent is encapsulated within a polymer shell. This segmentation prevents direct interaction between reducing agents and the water-based liquid, maintaining dispersion stability while preserving oxygen reduction performance.
Solution Approach 2:
The polymer shell acts as an intermediary between the reducing agent and the water-based liquid. It provides steric stabilization and prevents direct contact that would cause destabilization, gelation, or separation, while allowing the reducing agent to function through the shell structure.
2Reliability
If reducing agents are used in aqueous liquids, then oxygen absorbing ability is improved, but preservative performance is insufficient requiring additional preservatives
Solution Approach 1:
The invention merges multiple functions into a single particle system: the polymer shell provides preservative properties while the encapsulated reducing agent provides oxygen absorption. This combination eliminates the need for separate preservative additives while maintaining both functions.
Solution Approach 2:
The reducing particle exhibits multi-functionality by simultaneously providing oxygen reduction, preservative, and dispersion stabilization functions. The polymer shell and reducing agent work together to deliver multiple benefits from a single additive system.
3Reliability
If powdered oxygen absorbing materials are used, then oxygen reduction performance is improved, but persistence and sustainable releasing properties are poor
Solution Approach 1:
The polymer shell is pre-formed around the reducing agent before use, creating a controlled release structure. This preliminary encapsulation action ensures sustained release of the reducing agent over time, improving persistence while maintaining oxygen reduction performance.
Solution Approach 2:
The polymer shell forms a flexible yet protective barrier around the reducing agent, controlling its release rate. This shell structure allows sustained release of the reducing agent, improving persistence without compromising the oxygen reduction performance.
4Reliability
If reducing agents are added to water-based liquids, then oxygen reduction performance is improved, but adverse effects on other blended components occur
Solution Approach 1:
The polymer shell serves as an intermediary that prevents direct interaction between the reducing agent and other blended components. This isolation eliminates adverse effects on other ingredients while allowing the reducing agent to perform its oxygen reduction function.
Solution Approach 2:
The harmful interaction between the reducing agent and other blended components is extracted by encapsulating the reducing agent within the polymer shell. This separation removes the source of adverse effects while preserving the beneficial oxygen reduction performance.
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 dispersion achieves high levels of oxygen reduction and preservative performance with excellent stability and compatibility, maintaining effectiveness over time without destabilizing other components, and can be used in various applications including cosmetics, pharmaceuticals, and writing instruments.
Implementation Method 1
reducing particles comprising a polymer having a structural unit represented by General Formula (I) in a repeating unit as a main component and encapsulating a reducing component
Implementation Method 2
reducing component encapsulated in the reducing particles is at least one of reducing components selected from Group A... polyphenols, copper chlorophyll, flavonoids
Data Source
AI summary
A reducing particle dispersion may achieve both reduction performance on oxygen (oxygen absorbing ability) and preservative performance at a high level, while not adversely affecting other blended components and being sustainable (having slow releasing properties) with excellent dispersion stability. Such a reducing particle dispersion may include, for example, a dispersion in which reducing particles encapsulating at least one of reducing components selected from polyphenol(s), copper chlorophyll, flavonoid(s), anthocyanidin(s), dibutylhydroxytoluene, and butylhydroxyanisole, are dispersed in water. The reducing particles contain, as a main component, at least a polymer having a structural unit of formula (I) in a repeating unit:wherein R is an alkyl group having 2 to 8 carbons. The reducing particles preferably encapsulate a preservative component together with the reducing component.