Amine-functional Silicone Emulsion for Stable Perfume Deposition
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Solution Overview
Problem
Formulating low-pH silicone emulsions for consumer products is complex and often requires additional processing steps and ingredients, while perfume performance in these products is hindered by the hydrophobic and volatile nature of perfume oils, leading to stability and deposition efficiency issues.
Innovation Solution
A perfume/silicone emulsion composition comprising aminofunctional silicone with specific amine content, emulsifiers, and perfume raw materials with aldehyde or ketone moieties, formulated at a higher pH, which creates stable microenvironments for perfume association and improved deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If low-pH emulsion is formulated to improve emulsion stability, then emulsion stability is improved, but additional processing steps and pH adjustors are required
Solution Approach 1:
The patent changes the pH parameter from conventional low-pH to high-pH formulation. Specifically, the emulsion composition maintains a pH of about 7.0 or greater, which is opposite to the conventional low-pH approach. This parameter change allows the aminofunctional silicone to remain stable and effective without requiring additional pH adjustors or complex processing steps, thereby resolving the contradiction between stability and formulation complexity
Solution Approach 2:
The patent converts the typically problematic high-pH condition (which would normally cause amine group deprotonation and reduced stability) into a beneficial formulation approach. By using specific aminofunctional silicones with controlled amine content and combining them with compatible perfume raw materials, the high-pH environment becomes advantageous, eliminating the need for low-pH conditions while maintaining or improving emulsion stability and perfume performance
2Quantity of substance
If conventional perfume oils are used, then perfume fragrance is provided, but deposition efficiency is reduced due to hydrophobic and volatile nature
Solution Approach 1:
The patent creates a composite emulsion system where perfume raw materials are combined with aminofunctional silicone in a high-pH environment. This composite formulation allows the perfume to associate with the silicone matrix, creating a delivery system that overcomes the hydrophobic and volatile limitations of conventional perfume oils. The specific combination of aminofunctional silicone with controlled amine content and compatible perfume raw materials enables improved deposition efficiency while maintaining fragrance performance
Solution Approach 2:
The aminofunctional silicone acts as an intermediary carrier between the perfume raw materials and the fabric surface. The silicone emulsion serves as a medium that holds the perfume materials and facilitates their transfer to the fabric, improving deposition efficiency. The high-pH formulation enhances this intermediary function by maintaining the stability of the aminofunctional silicone and its interaction with the perfume raw materials
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 composition results in stable and effective perfume deposition and release in consumer products, enhancing freshness and conditioning capabilities without the need for additional processing steps or unnecessary ingredients.
Implementation Method 1
A perfume/silicone emulsion composition comprising: an aminofunctional silicone, where the aminofunctional silicone includes one or more primary amine moieties, and where the aminofunctional silicone is characterized by a total amine content of from about 0.05 to about 2.2; one or more emulsifiers; one or more perfume raw materials, where the one or more perfume raw materials includes an aldehyde moiety, a ketone moiety, or combinations thereof; and water.
Data Source
AI summary
Silicone/perfume emulsion compositions that include an aminofunctional silicone, one or more emulsifiers, one or more perfume raw materials, and water. Consumer products that include such emulsion compositions. Related methods of making and using such emulsions and consumer products.