Bleaching Composition Stabilizing Starch-Encapsulated Oil
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Solution Overview
Problem
Bleaching compositions containing starch-encapsulated oils are prone to oxidative degradation and browning when stored with hypochlorite-based bleach particles, leading to loss of stability and effectiveness.
Innovation Solution
A bleaching composition comprising water-sensitive starch or starch derivative particles encapsulating an oil, combined with a dry mixture of hypochlorite alkaline earth salts and mineral particles like calcium oxide, calcium carbonate, and calcium hydroxide, which are stable against oxidation and maintain their properties over shelf life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If starch-encapsulated oil particles are combined with hypochlorite-based bleach particles, then the bleaching composition provides effective bleaching power, but the starch undergoes oxidative degradation and browning during storage
Solution Approach 1:
The patent introduces an intermediary substance (antioxidant, UV absorber, or light stabilizer) that mediates between the starch-encapsulated oil particles and hypochlorite-based bleach particles. This intermediary prevents direct oxidative interaction between the starch and hypochlorite during storage, while allowing the bleaching composition to maintain its effective bleaching power when applied.
Solution Approach 2:
The patent creates a protective environment around the starch particles by incorporating substances that absorb UV light or scavenge free radicals. This effectively creates an 'inert' chemical environment that prevents oxidation of the starch by hypochlorite during storage, while preserving the reactive bleaching capability when the product is used.
2Duration of action of stationary object
If the composition is stored for extended periods, then shelf life is extended, but the starch degrades and the oil components lose effectiveness
Solution Approach 1:
The patent applies protective measures in advance by incorporating antioxidants, UV absorbers, or light stabilizers into the bleaching composition before storage. These substances preemptively protect the starch and oil components from degradation during shelf life, ensuring that the composition remains effective throughout the intended storage period.
Solution Approach 2:
The patent provides a protective buffer against degradation by including substances that absorb harmful UV radiation or neutralize oxidizing agents before they can damage the starch or oil. This 'cushioning' effect maintains the integrity and effectiveness of the active components throughout the shelf life of the product.
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 remains stable during storage, preventing undesired browning and maintaining bleaching power, allowing for effective use in consumer products like fabric and home care items without significant degradation of the perfume or oil components.
Implementation Method 1
a water sensitive starch, or starch derivative, based particle comprising an oil encapsulated/dispersed within the particle
Implementation Method 2
a bleach particle comprising a dry mixture of a hypochlorite alkaline earth salt
Data Source
Figure 1(a)~1(l)
Figure 2
Figure 3
AI summary
This invention relates to a bleaching composition comprising hypochlorite-based bleach particles and moisture-sensitive particles encapsulating an oil within starch or starch-derivative matrix, the composition being surprisingly stable toward degradation of the starch upon storage.