Polyol Ester Fragrance Fixatives for Fabric Deposition Retention
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Solution Overview
Problem
Existing methods for depositing fragrances on fabrics, particularly in rinse-off products, are inefficient, leading to significant loss during washing and drying, and fail to effectively utilize the beneficial properties of fragrances such as antimicrobial properties.
Innovation Solution
A method involving the use of polyol esters, specifically those of formula (I) and (II), is applied to fragrance compositions to enhance deposition on fabrics by contacting the composition with the fabric, allowing for long-lasting fragrance retention and potentially providing additional benefits like conditioning and softening effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rinse-off products are used for laundry, then cleaning effectiveness is improved, but fragrance deposition on fabric deteriorates
Solution Approach 1:
The patent introduces a polymeric deposition aid as an intermediary substance that mediates between the rinse-off product and the fabric. This polymer has specific properties (molecular weight, functional groups) that enable it to bind fragrance molecules and facilitate their transfer and retention on fabric surfaces during the rinsing process, thus resolving the contradiction between effective rinsing and fragrance deposition
2Duration of action of moving object
If more fragrance is deposited on fabric, then fragrance strength and longevity are improved, but cost increases
Solution Approach 1:
The patent optimizes specific parameters of the polymeric deposition aid, including molecular weight range (10,000-1,000,000 Da), functional group types, and concentration levels (0.1-10% w/w), to achieve maximum fragrance deposition efficiency at minimal effective doses. This parameter optimization allows effective fragrance retention without excessive material usage, addressing the cost concern
3Loss of substance
If microencapsulation technology is used, then fragrance deposition is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent extracts and utilizes only the essential functional properties of microencapsulation (controlled release and protection of fragrance molecules) while eliminating the complex capsule shell structures and associated manufacturing processes. The polymeric deposition aid provides similar benefits through simpler molecular mechanisms, reducing manufacturing complexity while maintaining fragrance deposition effectiveness
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 method significantly enhances fragrance deposition on fabrics, ensuring longevity and intensity, while also allowing for the retention of top, mid, and base notes, and can provide antimicrobial and malodor counteraction, even during high-temperature drying processes.
Implementation Method 1
at least one polyol ester... for enhancing deposition of a fragrance on a fabric
Data Source
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AI summary
The present invention relates to a method for imparting a fragrance to a fabric comprising the steps: (i) providing a composition comprising or consisting of one or more fragrance compound(s) and at least one polyol ester of the formula (I) as defined herein; (ii) contacting the composition from step (i) with the fabric; and (iii) optionally, drying the fabric. Furthermore, the present invention provides a fragrant object obtained or obtainable by the method according to the invention, a composition comprising or consisting of one or more fragrance compound(s) and at least one polyol ester of the formula (I), a product comprising a composition according to the invention as well as the use of a polyol ester of the formula (I) for enhancing deposition of a fragrance on a fabric.