Cross-linked Polymer Scent Matrix for Controlled Fragrance Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current perfumery technologies lack a prolonged release mechanism for super-absorbing alcoholic fragrances, leading to short-lasting scents in cosmetic products and air fresheners.
Innovation Solution
A cross-linked mould shaped polymer is developed that absorbs alcoholic fragrances and releases them in a controlled manner, using thermal or photochemical polymerization within a mould with specific initiators and catalysts, allowing for the creation of a scented product that can be incorporated into various articles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If traditional fragrance release methods are used, then the fragrance can be released initially, but the release duration is short and the scent fades quickly
Solution Approach 1:
The patent employs a porous polymeric matrix that absorbs and stores fragrance molecules. The porous structure allows controlled diffusion of fragrance over time, extending release duration while maintaining consistent concentration through the gradient-driven diffusion process from high to low concentration zones within the matrix
Solution Approach 2:
The invention creates a composite system combining a polymeric matrix with absorbed fragrance molecules. This composite structure enables the polymer to act as a reservoir and controlled-release mechanism, transforming rapid evaporation into prolonged, steady-state fragrance release through the matrix diffusion pathway
2Speed
If alcoholic fragrances are used, then the fragrance has good volatility and initial intensity, but the volatile ingredients are lost quickly and the scent does not last
Solution Approach 1:
The fragrance molecules are pre-absorbed into the polymeric matrix during product formulation. This preliminary absorption traps the volatile alcoholic fragrance components within the polymer network, preventing their rapid evaporation and enabling controlled release over extended periods through gradual diffusion
Solution Approach 2:
The polymeric matrix acts as an intermediary between the volatile fragrance molecules and the external environment. It mediates the release process by allowing volatile components to escape at controlled rates through the matrix structure, transforming rapid volatility into sustained, manageable fragrance delivery
3Quantity of substance
If cross-linked polymer gels are used to absorb fragrance, then the fragrance can be retained, but the release control mechanism is insufficient and the shape stability is compromised
Solution Approach 1:
The patent applies cross-linking at specific locations within the polymer matrix to create localized rigid zones that maintain overall mould shape stability. The cross-linked regions act as structural anchors while leaving other regions sufficiently flexible to allow fragrance diffusion, achieving both shape retention and release functionality through spatially differentiated properties
Solution Approach 2:
The invention modifies the polymer network parameters by introducing cross-links that alter the matrix density and pore structure. This parameter change increases fragrance retention capacity through enhanced absorption sites while simultaneously improving shape stability through increased network rigidity, transforming the polymer from a simple gel to a structured release matrix
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 cross-linked polymer provides a continuous, prolonged release of fragrances, maintaining a pleasant organoleptic effect for an extended period, outperforming traditional methods by retaining volatile ingredients and ensuring a lasting scent.
Implementation Method 1
subjecting the mixture so obtained to a polymerization method
Implementation Method 2
thermal or photochemical polymerization within a mould with specific initiators and catalysts
Implementation Method 3
Polymer gels (hydrogel) of cross-linked macromolecules capable of forming a three dimensional network have been widely disclosed. These polymer gels absorb water molecules inside the network by osmotic forces
Implementation Method 4
gels in form of soft solids which can entrap organic solvents into the three dimensional matrix
Implementation Method 5
allows a slower diffusive release of the fuel from the gelled matrix
Data Source
AI summary
The present invention comprises a cross-linked shaped scented product comprising: (a) a cross-linked shaped polymer; and (b) an alcoholic fragrance absorbed inside the polymer; wherein: the cross-linked shaped scented product is capable of modifying its volume, and maintaining its shape when the alcoholic fragrance is released; and the cross-linked shaped polymer (a) is capable of modifying its volume, and maintaining its shape when the alcoholic fragrance is absorbed: and is obtainable by a polymerization process carried out in a shaped mould; to scented articles containing the product; as well as processes for their preparation.