Laundry Perfuming Composition with Microcapsule Coating
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Solution Overview
Problem
Current perfuming compositions either lack immediate fragrance release due to low solubility or fail to provide long-lasting fragrance, as they either rely on non-polymeric crystalline materials or polymeric materials with microcapsules, but not both simultaneously, and are prone to component separation during storage and use.
Innovation Solution
A composite perfuming composition is developed by incorporating fragrance microcapsules into water-soluble crystalline materials, using an adhesive agent to ensure adhesion and stability, resulting in a free-flowing dry powder that offers immediate fragrance release during washing and delayed release when worn, while preventing component separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If non-polymeric crystalline materials are used, then high dissolution rate and immediate fragrance release are achieved, but long-lasting fragrance effect is lost
Solution Approach 1:
The invention combines non-polymeric crystalline materials (for immediate fragrance release through high dissolution rate) with polymeric microcapsules (for long-lasting fragrance effect). This composite structure allows both rapid initial fragrance release and sustained prolonged fragrance persistence, resolving the contradiction between speed of dissolution and duration of action.
2Duration of action of moving object
If polymeric materials with microcapsules are used, then long-lasting fragrance effect is achieved, but dissolution rate and immediate fragrance release are reduced
Solution Approach 1:
The composite formulation integrates polymeric microcapsules (providing long-lasting fragrance) with non-polymeric crystalline materials (providing rapid dissolution and immediate fragrance release). The crystalline materials dissolve quickly to provide instant fragrance, while the microcapsules gradually release fragrance over time, thus resolving the contradiction between dissolution speed and fragrance persistence.
Solution Approach 2:
The fragrance delivery system is segmented into two functional components: non-polymeric crystalline materials for immediate release and polymeric microcapsules for sustained release. This segmentation allows each component to perform its specialized function optimally, with the crystalline phase providing rapid dissolution and the microcapsule phase providing prolonged fragrance persistence.
3Duration of action of moving object
If microcapsules are added to crystalline materials, then long-lasting fragrance is achieved, but component separation occurs during storage
Solution Approach 1:
The microcapsules are coated with a flexible polymer film that adheres to the crystalline material surface, creating a stable composite structure. This coating prevents component separation during storage while allowing controlled fragrance release during use, resolving the contradiction between fragrance persistence and composition stability.
Solution Approach 2:
The polymer coating acts as an intermediary between the microcapsules and crystalline materials, providing adhesion that prevents separation during storage. This intermediate layer maintains the integrity of the composite formulation while allowing the functional properties of both components to be preserved.
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 achieves controlled fragrance release over time, maintaining stability and preventing lump formation, ensuring effective and convenient dosage with a high solubility in cold water and long-lasting perfume persistence for several weeks.
Implementation Method 1
using an adhesive agent to ensure adhesion and stability
Implementation Method 2
water-soluble crystalline materials... high solubility in cold water
Implementation Method 3
microcapsules prevent fragrance evaporation during the washing and drying operations
Implementation Method 4
release the fragrance by microcapsules breakage, when garments are handled or worn
Data Source
AI summary
Laundry perfuming composition of the type comprising water-soluble, non-polymeric crystal salts in combination with a fragrance in free form, wherein said crystal salts are furthermore provided with at least a partial coating layer consisting of a fragrance in microcapsules, and such fragrance in free form is absorbed in said coating layer.