Liquid Esterquat Formulations for Hair Conditioning
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Solution Overview
Problem
Current esterquats used in hair conditioning are solid substances that require solvents for formulation, limiting flexibility and freedom in formulation options, and existing products do not provide excellent conditioning effects on keratin fibers with long-lasting rinsing times.
Innovation Solution
Cosmetic formulations containing esterquats with specific acyl radicals of monounsaturated fatty acids and isostearic or ricinoleic acids, combined with water and optional compounds, which are liquid at room temperature, allowing solvent-free incorporation and enhanced conditioning effects on keratin fibers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solid esterquats are used in hair conditioning formulations, then conditioning effects on keratin fibers are achieved, but solvents must be added which limits formulation flexibility and freedom
Solution Approach 1:
The patent changes the physical state parameter of the esterquat from solid to liquid at room temperature through specific molecular structure design (using isopropanolamine with specific acyl radicals), thereby eliminating the need for solvents and increasing formulation flexibility while maintaining conditioning efficacy
2Reliability
If conventional esterquats are used, then conditioning effects are provided, but they do not maintain effectiveness with longer rinsing times
Solution Approach 1:
The patent modifies the chemical structure parameters of the esterquat by using specific acyl radicals (monounsaturated fatty acids with 18-22 carbon atoms, isostearic acid, or ricinoleic acid) to enhance the durability of the conditioning effect, allowing it to persist through longer rinsing times while maintaining effectiveness
3Quantity of substance
If esterquats are used in lower concentrations, then ecological impact is reduced and economy is improved, but conditioning effectiveness may be compromised
Solution Approach 1:
The patent optimizes the molecular structure parameters of the esterquat (specific acyl radicals and isopropanolamine base) to maximize conditioning efficiency per unit concentration, enabling effective performance at lower concentrations (0.1-10% by weight) that reduce ecological impact and improve economy
Data Source
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AI summary
The invention relates to cosmetic formulations containing certain esterquats based on isopropanolamine and the use of these esterquats in cosmetics.