Aldehydic Raw Materials Suppress Hydrogen Sulfide in Perfume Compositions
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Solution Overview
Problem
Perfume compositions containing sulfur-containing pro-fragrances face issues with the formation of hydrogen sulfide, which is not effectively mitigated by traditional scavenger molecules in consumer products like fabric conditioners and shower gels, and preservatives like benzisothiazolin-3-one are under regulatory pressure.
Innovation Solution
Incorporating aldehydic perfumery raw materials into perfume compositions to reduce the formation of hydrogen sulfide from sulfur-containing pro-fragrances, utilizing specific chemical structures such as R—CH2—CHO and R′—CH(R′)—CHO to effectively minimize odor issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If hydrogen sulfide scavenger molecules (e.g., triethanolamine) are added to perfume compositions, then the unpleasant odor of hydrogen sulfide is trapped and prevented, but the scavenger fails to work effectively in acidic consumer products and the trapped hydrogen sulfide can be released again
Solution Approach 1:
The patent changes the chemical parameter of the perfume composition by introducing aldehydic raw materials with specific molecular structures (R-CH2-CHO or R'-CH(R'')-CHO) that have the capability to prevent hydrogen sulfide formation through chemical interaction, rather than relying on physical trapping by scavengers. This parameter change enables reliable hydrogen sulfide control across different pH conditions.
Solution Approach 2:
The aldehydic raw materials act as intermediary substances that chemically interact with the sulfur-containing pro-fragrance compounds to prevent hydrogen sulfide formation. These intermediaries work through chemical mechanisms that are independent of pH conditions, unlike scavenger molecules that rely on pH-dependent trapping mechanisms.
2Object-affected harmful factors
If preservatives (e.g., BIT, CIT, MIT) are added to consumer products to reduce hydrogen sulfide formation, then the formation and release of hydrogen sulfide is reduced, but regulatory pressure increases and preservatives may need to be removed
Solution Approach 1:
The patent converts the potential harmful interaction between sulfur-containing pro-fragrances and oxygen (which leads to hydrogen sulfide formation) into a beneficial controlled process by using aldehydic raw materials that chemically prevent the unwanted oxidation pathway. This approach addresses the harmful effect without requiring restrictive preservatives.
Solution Approach 2:
The aldehydic raw materials serve as functional substitutes for preservatives, providing hydrogen sulfide control through their chemical structure rather than through preservative action. This approach replaces regulated substances with alternative chemical mechanisms that achieve the same protective function without regulatory restrictions.
3Ease of operation
If sulfur-containing pro-fragrances are used in perfume compositions, then desirable fragrance effects are achieved, but oxidation occurs leading to hydrogen sulfide formation with unpleasant odor
Solution Approach 1:
The patent applies preliminary action by incorporating aldehydic raw materials into the perfume composition before the oxidation of sulfur-containing pro-fragrances can occur. These aldehydic materials are pre-positioned to chemically interact with and prevent the oxidation pathway that would otherwise lead to hydrogen sulfide formation, while allowing the desired fragrance release to proceed.
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 use of aldehydic perfumery raw materials significantly reduces hydrogen sulfide formation, enhancing the stability and pleasant odor of perfume compositions in various consumer products, even in acidic or neutral pH environments.
Implementation Method 1
aldehydic perfumery raw materials are capable of reducing the formation of hydrogen sulfide from a sulfur-containing pro-fragrance compound
Data Source
AI summary
Described herein is a perfume composition including at least one sulfur-containing pro-fragrance compound and at least one aldehydic perfumery raw material, where the at least one aldehydic perfumery raw material is present in an amount effective to reduce the formation of hydrogen sulfide from the sulfur-containing pro-fragrance. Also described herein are consumer products including the perfume composition as well as the use of at least one aldehydic perfumery raw material for reducing the formation of hydrogen sulfide from a sulfur-containing pro-fragrance.