Cucurbic Acid Cosmetic Composition Viscosity Stability

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Solution Overview

Problem

Cosmetic compositions containing hydrogenated cucurbic acid compounds tend to experience significant fluidification, leading to instability and poor application precision on keratin materials, and negatively affect the thickening power of conventional gelling agents.

Innovation Solution

A non-foaming cosmetic composition comprising a cucurbic acid compound and a specific 2-acrylamido-2-methylpropanesulphonic acid copolymer, such as 3-hydroxy-2-pentylcyclopentaneacetic acid, in a physiologically acceptable medium, which maintains stability over time without substantial fluidification and provides improved cosmetic properties like reduced stickiness and ease of application.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If hydrogenated cucurbic acid compounds are introduced into aqueous cosmetic formulation, then cosmetic efficacy is improved, but viscosity decreases substantially causing fluidification and destabilization

Engineering Contradiction:
Improvecosmetic efficacyVSAvoidviscosity stability
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent changes the chemical parameter of the cucurbic acid compound by hydrogenating it, which modifies its molecular structure and reduces its fluidifying effect on the formulation while maintaining cosmetic efficacy

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite formulation combining hydrogenated cucurbic acid compounds with specific aqueous phases and cosmetic ingredients, where the hydrogenated compound acts as a stabilizing agent that prevents excessive fluidification while maintaining the desired cosmetic effects

Inventive Principle:
Principle #40Composite materials

2Reliability

If hydrogenated cucurbic acid compounds are added to composition, then cosmetic properties are enhanced, but application precision deteriorates due to running from keratin materials

Engineering Contradiction:
Improvecosmetic propertiesVSAvoidapplication precision
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The hydrogenation of cucurbic acid compounds changes their physical parameters including viscosity and adhesion properties, preventing the composition from running off keratin materials and improving application precision

Inventive Principle:
Principle #35Parameter changes

3Stability of the object's composition

If conventional gelling agents are used with hydrogenated cucurbic acid compounds, then composition structure is provided, but thickening power is reduced

Engineering Contradiction:
Improvecomposition structureVSAvoidthickening power
Core Design Contradiction:
Stability of the object's compositionVSQuantity of substance

Solution Approach 1:

The hydrogenation of cucurbic acid compounds changes their molecular parameters to enhance thickening capability, allowing conventional gelling agents to maintain their thickening power even in the presence of these compounds

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP2654692B1Cosmetic composition comprising a cucurbic acid compound and an acrylic copolymer
Publication Date: 2016.12.07 LOREAL SA
  • EP2654692B1 patent drawing
  • EP2654692B1 patent drawing
  • EP2654692B1 patent drawing

AI summary

The invention relates to a cosmetic composition comprising, in a physiologically acceptable aqueous medium, a cucurbic acid compound of formula (I) in which R1 represents a radical COOR3, where R3 denotes H or a C1-C4 alkyl radical, which is optionally substituted by one or more hydroxyl groups; R2 represents a hydrocarbon radical having from 1 to 18 carbon atoms; and a copolymer of 2-acrylamido-2-methylpropanesulphonic acid and hydroxylated C2-C4 alkyl (meth)acrylate. Application to the care and make-up of keratin materials.