Pearling Agent Surfactant Combination for Stable Personal Care Formulations

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Solution Overview

Problem

Conventional personal care compositions require a large number of ingredients to achieve stability and aesthetic characteristics, making them complex and time-consuming to formulate, while also seeking a pearling agent that is compatible with other ingredients to maintain desired levels of stability and efficiency.

Innovation Solution

A pearling agent consisting of a surfactant combination with low HLB surfactants (HLB value from 3 to 6) and high HLB surfactants (HLB value from 12 to 16), specifically Steareth-2 and Steareth-21, is used to create a pearlescent appearance without additional pearling agents, ensuring compatibility and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If conventional personal care compositions include a large number of ingredients to achieve stability and aesthetic characteristics, then the desired stability and pearlescent appearance are improved, but the formulation complexity and time required increase significantly

Engineering Contradiction:
ImprovestabilityVSAvoidformulation complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent combines multiple functions into a single pearling agent composition. Specifically, it merges the pearlescent aesthetic function with surfactant functionality by formulating a composition containing both low HLB (3-6) and high HLB (12-16) surfactants in specific ratios. This single composition simultaneously provides the desired pearlescent appearance and maintains formulation stability, eliminating the need for separate stability agents and reducing overall formulation complexity

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The pearling agent composition is designed to perform multiple functions within personal care formulations. It serves as both an aesthetic pigment provider (creating pearlescent effects) and a functional surfactant (providing emulsification, foaming, and stability). The composition can replace traditional single-function pearling agents while also contributing to overall formulation stability through its dual surfactant system

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Illumination intensity

If conventional personal care compositions include a large number of ingredients to achieve desired aesthetic characteristics, then the pearlescent appearance is improved, but the formulation time and logistical efforts increase

Engineering Contradiction:
Improvepearlescent appearanceVSAvoidformulation time
Core Design Contradiction:
Illumination intensityVSLoss of time

Solution Approach 1:

The patent merges the pearlescent aesthetic function with surfactant functionality by formulating a composition containing both low HLB (3-6) and high HLB (12-16) surfactants in specific ratios. This single composition simultaneously provides the desired pearlescent appearance and maintains formulation stability, eliminating the need for separate stability agents and reducing overall formulation complexity

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent utilizes HLB value parameters to optimize the pearling agent composition. By selecting surfactants with specific HLB ranges (low: 3-6, high: 12-16) and establishing optimal ratio parameters between them, the invention achieves consistent pearlescent appearance while simplifying formulation. The parameter-based approach allows for systematic formulation rather than trial-and-error with multiple ingredients

Inventive Principle:
Principle #35Parameter changes

3Illumination intensity

If traditional pearling agents are used to create pearlescent effects, then the aesthetic characteristics are improved, but the compatibility with other ingredients and formulation stability may be compromised

Engineering Contradiction:
Improvepearlescent appearanceVSAvoidcompatibility and stability
Core Design Contradiction:
Illumination intensityVSReliability

Solution Approach 1:

The patent creates a composite pearling agent composition by combining surfactants with different HLB characteristics (low HLB 3-6 and high HLB 12-16) in specific ratios. This composite structure enhances compatibility with diverse formulation ingredients while maintaining pearlescent appearance. The dual-surfactant system provides broader compatibility range compared to single-component pearling agents, ensuring reliability across different personal care product types

Inventive Principle:
Principle #40Composite 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 surfactant combination effectively imparts a pearlescent appearance to personal care compositions while maintaining stability and compatibility with other ingredients, reducing the number of components needed and simplifying formulation processes.

Implementation Method 1

pearling agents or pearlants are used to impart a pearlescent or pearlescence-like appearance to cosmetic and personal care compositions

Methodology Applied
Scientific EffectLight reflection and refraction: Reflection

Implementation Method 2

the surfactant combination includes one or more low HLB surfactants having an HLB value from about 3 to about 6; and one or more high HLB surfactants having an HLB value from about 12 to about 16

Methodology Applied
Scientific EffectSurfactant action: Surfactant

Data Source

PatentEP3544577A1Pearling agent and pearlescent compositions
Publication Date: 2019.10.02 COLGATE PALMOLIVE CO

AI summary

A pearling agent including a combination of low HLB surfactants and high HLB surfactants.