Silicic Acid Ester Fragrance Delivery in Dryers
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Solution Overview
Problem
Existing fabric treatment methods, such as single-use dryer sheets, suffer from incomplete fragrance transfer to fabrics due to heat and humidity, leading to premature loss of fragrance and increased landfill waste, while existing hydrolysis-resistant siloxane esters are not effectively used in reusable dryer devices.
Innovation Solution
The use of a reusable fabric treatment device incorporating a silicic acid ester mixture of specific formulas, which provides prolonged fragrance and biocide alcohol release, resistant to hydrolysis under dryer conditions, allowing multiple fabric treatment cycles with efficient fragrance transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If single-use dryer sheets are used for fabric treatment, then fragrance transfer occurs initially, but fragrance is lost prematurely and landfill waste increases
Solution Approach 1:
The invention changes the chemical parameter of the fragrance carrier from traditional volatile compounds to silicic acid esters with specific molecular structures (Formula I and II). These esters have controlled hydrolysis rates that allow gradual fragrance release over extended periods, transforming the fragrance delivery mechanism from rapid evaporation to sustained controlled release, thereby extending fragrance duration and reducing premature loss
Solution Approach 2:
The invention uses composite silicic acid ester structures combining multiple functional groups (Formula I: cyclic ester with m≥2; Formula II: acyclic ester with n≥2). These composite molecular structures provide both hydrolysis resistance and controlled fragrance release capabilities, creating a material that simultaneously achieves extended duration and reduced fragrance loss
2Duration of action of moving object
If hydrolysis-resistant siloxane esters are used, then fragrance release is prolonged, but they are not effectively used in reusable dryer devices
Solution Approach 1:
The invention modifies the siloxane ester structure by introducing specific cyclic (Formula I) and acyclic (Formula II) silicic acid ester configurations with defined molecular weights and hydrolysis rates. These parameter changes enable the esters to maintain structural integrity in reusable devices while providing controlled fragrance release, making them suitable for multiple dryer cycles
Solution Approach 2:
The invention transforms the approach from disposable single-use sheets to reusable devices by using silicic acid esters that maintain stability over multiple cycles. The esters provide sufficient durability for reusable device application while still delivering extended fragrance release, eliminating the need for frequent device replacement
3Quantity of substance
If traditional fabric treatment compositions are used in dryers, then fragrance transfer occurs, but incomplete transfer happens due to heat and humidity
Solution Approach 1:
The invention changes the chemical parameters of the fragrance composition by using silicic acid esters with specific hydrolysis resistance properties. These esters maintain molecular stability under dryer heat and humidity conditions, preventing premature degradation and enabling complete transfer to fabric surfaces, thereby increasing both transfer amount and efficiency
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 silicic acid ester mixture ensures extended duration of fragrance and biocide alcohol emanation on fabrics, reducing waste and maintaining freshness over multiple dryer cycles without excessive hydrolysis, thus enhancing fabric treatment efficacy.
Implementation Method 1
resistant to hydrolysis under dryer conditions
Implementation Method 2
transferring a portion of the fabric treatment composition from the dryer device to the fabric
Implementation Method 3
provides prolonged fragrance and biocide alcohol release, resistant to hydrolysis under dryer conditions
Data Source
AI summary
Methods of treating fabric in a dryer and the fabric treatment devices used to provide the fabric treatment composition to the fabric are disclosed. More particularly, methods of treating fabric in a dryer that provides treatment of fabric, including fragrance delivery onto the fabrics, during a multiple of treatment device uses, which may be useful in laundry drying applications and may also provide effective fragrance delivery to the laundered and dried fabrics are provided herein.