Foaming Personal Care Composition for Spreadable Cooling Application
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Solution Overview
Problem
Existing personal care formulations, such as post-foaming shave gels, suffer from rapid foaming that impedes spreadability and active ingredient penetration, and rely on costly sensates for cooling effects, which can cause undesirable biological interactions.
Innovation Solution
Incorporating trans-1-chloro-3,3,3-trifluoropropene (1233zd(E)) and optionally trans-1,3,3,3-tetrafluoropropene (1234ze(E)) as foam-forming components in personal care compositions, which evaporate to create foams, enhancing spreadability and penetration while providing immediate and long-lasting cooling sensations without sensates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If volatile hydrocarbons are used to form foam in post-foam applications, then foam is produced, but the foam forms too quickly which negates the ability of the formulation to spread on the skin or hair and penetrate into the skin/hair
Solution Approach 1:
The patent changes the chemical composition parameters by replacing traditional volatile hydrocarbons with trans-1-chloro-3,3,3-trifluoropropene and trans-1,3,3,3-tetrafluoropropene. These alternative compounds have different volatility characteristics that allow for controlled foam formation - they evaporate and foam at a moderated pace, providing sufficient time for the formulation to spread across the skin or hair surface and penetrate into pores before complete foam expansion occurs.
2Temperature
If sensates are used to provide cooling sensation, then cooling effect is achieved, but the cost increases and there is risk of biological interactions and allergic reactions
Solution Approach 1:
The patent extracts and eliminates the need for sensate ingredients from the formulation. Instead of using compounds that interact with TRP channels to create cooling sensation, the invention relies on the physical evaporation process of the fluorinated propene compounds themselves. As these compounds evaporate from the skin surface, they absorb heat through the latent heat of vaporization, producing a cooling effect without requiring any biological interaction or activation of sensory receptors, thereby avoiding allergic reactions and other harmful biological interactions.
3Temperature
If sensates are used to provide cooling sensation, then cooling effect is achieved, but the cost of ingredients increases
Solution Approach 1:
The patent makes the fluorinated propene compounds multi-functional: they serve both as the foam-forming propellant and as the cooling agent. This eliminates the need for separate, expensive sensate ingredients. The same trans-1-chloro-3,3,3-trifluoropropene and trans-1,3,3,3-tetrafluoropropene that provide the desired foam characteristics also deliver the cooling sensation through their evaporation process, thereby reducing overall ingredient costs while maintaining the cooling effect.
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 compositions improve spreadability and penetration of active ingredients, offer immediate and long-lasting cooling sensations, and eliminate the need for costly sensates, thus addressing the limitations of prior formulations.
Implementation Method 1
foam forming component(s) comprising trans-1-chloro-3,3,3-trifluoropropene (1233zd(E))... foaming said gel, lotion or cream by evaporating said trans-1-chloro-3,3,3-trifluoropropene (1233zd(E)) from said gel, lotion or cream
Implementation Method 2
evaporating said trans-1-chloro-3,3,3-trifluoropropene (1233zd(E)) from said applied personal care composition whereby at least a portion of said one or more active ingredients remains on and/or in the skin, hair and/or mucous membrane of the human being treated during said evaporation and whereby upon said evaporation said human being treated experiences a cooling sensation
Data Source
AI summary
Disclosed are personal care formulations, personal care methods and personal care devices that comprise or use a gel, lotion, cream or the like comprising (a) one or more active ingredients for providing a beneficial effect to the skin and/or hair and/or mucous membranes of a human and (b) from about 1 percent by weight to about 50 percent by weight of foam forming component(s) comprising trans-1-chloro-3,3,3-trifluoropropene (1233zd(E).