Enzyme-Triggered Detergent Release for Selective Rinse Delivery
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Solution Overview
Problem
Existing detergent technologies face challenges in selectively releasing rinse benefit agents at the desired time during laundry or dishwashing processes, often resulting in inefficiencies and residue issues due to bulk simultaneous release of components, and difficulties in ensuring precise enzyme activity for controlled release.
Innovation Solution
The development of detergent particles incorporating an enzyme-substrate pair enclosed in a barrier layer, which triggers the release of rinse benefit agents during the rinse phase by enzymatic reaction to surfactant concentration changes, allowing for targeted and efficient delivery of agents like perfumes and fabric softeners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If all detergent constituents are released simultaneously into the water bath, then the product formulation is simple, but it causes incompatibility problems between constituents and prevents selective introduction at defined points in time
Solution Approach 1:
The detergent product is divided into multiple compartments or layers, each containing different constituents that are released at different times. This segmentation allows selective release of constituents at defined points in the wash cycle, preventing incompatibility while maintaining manufacturing feasibility.
Solution Approach 2:
Constituents are pre-positioned in specific compartments or layers within the detergent product before use. This preliminary arrangement ensures that constituents are released in the correct sequence and at the appropriate times, preventing compatibility issues while allowing for relatively simple product formulation.
2Manufacturing precision
If a paraffin wax matrix is used to delay release of final-rinse surface-active agent, then release timing is controlled, but the matrix material leaves residues on cleaned articles and interferes with agent action
Solution Approach 1:
The matrix material is changed from paraffin wax to a water-soluble polymer with different physical and chemical parameters. This change maintains the delayed release functionality while eliminating residue formation and interference with the surface-active agent's action on cleaned articles.
Solution Approach 2:
A composite matrix system is used combining water-soluble polymer with specific functional properties. This composite material provides both the delayed release mechanism and the benefit of being residue-free, while also being compatible with the final-rinse surface-active agent.
3Ease of operation
If temperature-controlled release is used to release active ingredients at different cycles, then selective apportionment is achieved, but the system requires specific temperature profiles that may not be compatible with all washing machines
Solution Approach 1:
The detergent product design incorporates multiple release mechanisms or a versatile matrix system that can function across different temperature ranges and washing machine types. This universal approach maintains selective apportionment capability while adapting to various washing machine profiles and operating conditions.
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
This solution enables effective and targeted release of rinse benefit agents during the rinse phase, enhancing the washing process while minimizing residue and improving the effectiveness of detergent components, such as perfumes and fabric softeners, without requiring tailored liquid compositions.
Implementation Method 1
an enzyme-substrate pair enabling the triggered release of the rinse benefit agent at the rinse stage
Implementation Method 2
an enzyme surrounded by a barrier layer comprising a substrate for said enzyme
Data Source
AI summary
The combination of an enzyme substrate and an enzyme capable of accelerating the modification of said substrate, provides a triggered release system which works especially well. The use of the enzyme-triggered release system can retain a rinse benefit agent during the wash stage and release it during the subsequent rinse stage.