Absorbent Article Perfume Release From Cyclodextrin Complexes
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Solution Overview
Problem
Conventional perfumes in absorbent articles are not optimized for long-lasting fragrance release from cyclodextrin complexes, leading to malodor issues and inefficient perfume expression, especially after use or disposal.
Innovation Solution
Formulating perfumes with specific properties such as a cyclodextrin complex stability constant of 3.0 or less, a ClogP of 2.5 or less, and a weight average molecular weight of 200 Daltons or less to enhance release from cyclodextrin complexes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If conventional perfumes are used in absorbent articles with cyclodextrin complexes, then the articles can mask or reduce odor, but the fragrance release is insufficient and malodor persists after use
Solution Approach 1:
The patent applies parameter changes by optimizing specific physical and chemical properties of perfume raw materials including cyclodextrin complex stability constant (log k ≤ 3.0), ClogP (≤ 2.5), and molecular weight (≤ 200 Daltons). These parameter modifications enable improved fragrance release from cyclodextrin complexes while maintaining malodor control, directly resolving the contradiction between odor masking and fragrance expression.
2Stability of the object's composition
If perfumes with high stability constants are used in cyclodextrin complexes, then the perfumes are retained in the complex, but the fragrance release is reduced and perfume components remain unexpressed
Solution Approach 1:
The patent establishes an optimal stability parameter (log k ≤ 3.0) that balances complex stability with fragrance release. This parameter change resolves the contradiction by preventing both excessive retention (which blocks release) and insufficient stability (which reduces retention). The optimized stability constant ensures adequate perfume retention while enabling sufficient fragrance expression throughout product use.
3Duration of action of stationary object
If absorbent articles are designed to be worn for many hours, then the articles provide extended protection, but the fragrance must maintain defined character throughout extended use and after disposal
Solution Approach 1:
The patent extends fragrance duration by optimizing molecular weight (≤ 200 Daltons) and ClogP (≤ 2.5) parameters of perfume raw materials. These changes enable lighter, more volatile components that release fragrance effectively over extended periods. The optimized parameters ensure fragrance maintains defined character throughout many hours of wear and continues to provide scent after disposal, matching the extended protection duration of the article.
4Reliability
If perfumes are optimized for release from cyclodextrin complexes with specific parameters, then fragrance release improves significantly, but the formulation becomes more complex
Solution Approach 1:
The patent simplifies formulation complexity by establishing clear numerical thresholds for key parameters (log k ≤ 3.0, ClogP ≤ 2.5, molecular weight ≤ 200 Daltons). These definitive parameter specifications provide straightforward selection criteria for perfume raw materials, making the optimization process more systematic and less complex than trial-and-error approaches. The clear parameter boundaries enable easier formulation development while achieving superior fragrance release efficacy.
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 optimized perfumes demonstrate significantly improved fragrance release, with up to 15 times greater efficacy compared to conventional compositions, maintaining scent intensity throughout use and after disposal.
Implementation Method 1
a cyclodextrin complex stability constant (log k) of less than about 3.0
Data Source
AI summary
An absorbent article comprising a perfume which is suitable for improved release from a cyclodextrin complex, wherein the perfume includes 10% or more, by weight of the perfume, of one or more perfume raw materials having: a cyclodextrin complex stability constant (log k) of less than about 3.0, a ClogP of about 2.5 or less, and a weight average molecular weight of about 200 Daltons or less.