Enhanced peroxygen stability in multi-dispense TAED-containing peroxygen solid
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Solution Overview
Problem
Existing solid bleach compositions with peroxygen sources and bleach activators face stability challenges, leading to premature reaction and reduced shelf life, especially when stored at elevated temperatures, making it difficult to formulate stable multi-use or multi-dispense products.
Innovation Solution
A stabilized solid bleach composition is developed using a binding system that includes an anionic surfactant and a cellulose source, combined with a sequestrant, which prevents premature reaction between the peroxygen source and bleach activator, allowing them to be formulated into a single solid composition with improved shelf stability and extended multi-dispensing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If peroxygen source and bleach activator are combined in a single solid composition, then convenience of use is improved, but stability deteriorates due to premature reaction
Solution Approach 1:
The solid composition is segmented into distinct functional zones: a peroxygen source region and a bleach activator region separated by a barrier layer. This physical segmentation prevents direct contact between reactive components during storage, eliminating premature reactions while maintaining the convenience of a single-composition format for end-use application.
Solution Approach 2:
A barrier layer comprising at least one of a surfactant or a polymer is introduced as an intermediary between the peroxygen source and bleach activator. This intermediary layer acts as a physical separator that prevents direct interaction between the reactive components during storage and transportation, yet allows both components to be delivered together to the application point where the barrier is compromised or dissolved.
2Productivity
If solid bleach composition is formulated for multi-dispensing, then productivity is improved, but stability deteriorates during extended storage
Solution Approach 1:
The solid composition is segmented into distinct functional zones: a peroxygen source region and a bleach activator region separated by a barrier layer. This physical segmentation prevents direct contact between reactive components during storage, eliminating premature reactions while maintaining the convenience of a single-composition format for end-use application.
Solution Approach 2:
A barrier layer comprising at least one of a surfactant or a polymer is introduced as an intermediary between the peroxygen source and bleach activator. This intermediary layer acts as a physical separator that prevents direct interaction between the reactive components during storage and transportation, yet allows both components to be delivered together to the application point where the barrier is compromised or dissolved.
3Stability of the object's composition
If reactive components are kept separate to prevent premature reaction, then stability is improved, but device complexity increases
Solution Approach 1:
The barrier layer, surfactant, and polymer components are merged into a single integrated formulation system. The barrier layer itself can contain both surfactant and polymer components in combination, creating a unified stable formulation that combines multiple stabilizing mechanisms without requiring separate application steps or complex multi-component assembly procedures.
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 provides a stable solid bleach composition that maintains shelf stability for at least one year at room temperature and up to two weeks during multi-dispensing, even at elevated temperatures, ensuring effective bleaching and sanitizing performance.
Implementation Method 1
stabilized compositions employ a sequestrant and a binding system containing an anionic surfactant
Implementation Method 2
the bleach activating agent is combined with the sequestrant and binding system providing shelf stability of the activated bleach composition
Implementation Method 3
stabilized compositions employ a sequestrant and a binding system containing an anionic surfactant
Data Source
AI summary
Stabilized compositions employing a sequestrant system and a binding system for improving shelf stability and dispensing stability of a solid activated bleach composition are disclosed. The compositions contain a peroxygen source and a catalyst activator which require generation of a peroxycarboxylic acid or other active oxygen sanitizing agent at a point of use. Stabilized compositions employ a sequestrant system including a phosphonic acid and/or dipicolinic acid sequestrant and a binding system comprising an anionic surfactant for a solid formulation of a catalyst activator and peroxygen source to provide shelf stability and dispensing stability for a activated bleach composition. Methods of formulating and use are further disclosed.