Hyperbranched Copolymer Cosmetic Composition Reduces Surface Transfer

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Solution Overview

Problem

Cosmetic compositions often transfer undesirably from the skin to other surfaces when contact is made, leading to contamination and staining of fabrics, displays, and other surfaces.

Innovation Solution

A cosmetic composition comprising a hyperbranched copolymer of dodecenyl succinic acid anhydride, diisopropanol amine, and bis-dimethylaminopropyl amine, combined with a non-ionic emulsifier such as an ether or ester of polyethylene glycol, significantly reduces material transfer to contacted surfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If cosmetic composition is applied to skin, then moisturizing and protecting functions are achieved, but material transfer to other surfaces occurs causing contamination and staining

Engineering Contradiction:

Improvemoisturizing and protecting functionVSAvoidmaterial transfer and contamination

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical parameters of the cosmetic composition by incorporating specific hyperbranched copolymers with terminal quaternary ammonium groups and non-ionic emulsifiers. These compositional changes modify the material's interaction properties with surfaces, reducing transfer while preserving the moisturizing and protecting functions on skin.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention uses composite material structures combining hyperbranched copolymers (with specific monomer ratios and molecular weights) and non-ionic emulsifiers. This composite approach creates a formulation that simultaneously achieves skin benefits and minimizes unwanted transfer to other surfaces through the synergistic interaction of its components.

Inventive Principle:

Principle #40Composite materials

2Quantity of substance

If cosmetic material is transferred to contacted surfaces, then coverage and application are achieved, but fabrics and displays become stained and contaminated

Engineering Contradiction:

Improvematerial coverageVSAvoidstaining and contamination of fabrics and displays

Core Design Contradiction:

Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent modifies the physical and chemical parameters of the cosmetic material through the use of hyperbranched copolymers with controlled molecular weights (10,000-1,000,000 g/mol) and specific monomer compositions. These parameter changes reduce the material's tendency to adhere to and stain surfaces like fabrics and displays while maintaining adequate coverage during application.

Inventive Principle:

Principle #35Parameter changes

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 this hyperbranched copolymer and non-ionic emulsifier in cosmetic compositions results in a reduction of material transfer by more than 25%, minimizing contamination and staining of surfaces.

Implementation Method 1

a non-ionic emulsifier being an ether or an ester of (poly)ethylene glycol

Methodology Applied

Scientific EffectEmulsion: Emulsion

Implementation Method 2

non-ionic emulsifier being an ether or an ester of (poly)ethylene glycol

Methodology Applied

Scientific EffectSurface tension reduction: Surfactant

Implementation Method 3

hyperbranched copolymer of the monomers (i) dodecenyl succinic acid anhydride (ii) diisopropanol amine (iii) bis-dimethylaminopropyl amine having terminal groups of formula -NR3+ X-

Methodology Applied

Scientific EffectElectrostatic interaction: Electrostatics

Data Source

PatentUS20250161193A1Cosmetic composition comprising specific hyperbranched copolymers and non-ionic emulsifiers being an ether or an ester of (POLY)ethyleneoxide

Publication Date: 2025.05.22 DSM IP ASSETS BV

AI summary

The present invention relates to cosmetic skin care compositions which comprise a hyperbranched copolymer of the monomers dodecenyl succinic acid anhydride, diisopropanol amine and bis-dimentheylaminopropyl amine having quaternary terminal groups and at least one non-ionic emulsifier being an ether or an ester of (poly)ethylene glycol.