Solid Cosmetic Composition for Gloss–Adhesion Compatibility

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Solution Overview

Problem

Existing solid cosmetic compositions struggle with compatibility issues between components that provide gloss and adhesion, leading to inadequate feeling on use and storage stability.

Innovation Solution

A solid cosmetic composition combining diphenylsiloxy phenyl trimethicone and hydrogenated polyisobutene, along with other compatible oils and waxes, to enhance gloss, adhesion, and storage stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If phenyl silicone and hydrogenated polyisobutene are combined to provide gloss and adhesion, then gloss and adhesion are improved, but compatibility between components deteriorates

Engineering Contradiction:
ImproveadhesionVSAvoidcompatibility
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent introduces a specific compound as an intermediary substance that facilitates compatibility between phenyl silicone and hydrogenated polyisobutene. This intermediary acts as a bridge, allowing these two components to coexist stably while maintaining their respective functions of providing gloss and adhesion, thus resolving the contradiction between improving adhesion and maintaining compositional stability.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent modifies the molecular weight and structural parameters of the phenyl silicone and hydrogenated polyisobutene to achieve optimal compatibility. By carefully selecting and adjusting these parameters, the invention enables the components to be mutually soluble while preserving their functional properties, thereby resolving the compatibility issue without sacrificing adhesion performance.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If phenyl silicone and hydrogenated polyisobutene are combined to provide gloss and adhesion, then gloss and adhesion are improved, but feeling on use deteriorates

Engineering Contradiction:
ImproveadhesionVSAvoidfeeling on use
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The specific compound introduced in the invention serves as a mediator that not only ensures compatibility between phenyl silicone and hydrogenated polyisobutene but also optimizes the sensory properties. This intermediary substance enables the formulation to maintain excellent adhesion while providing a pleasant feeling on application, thus resolving the contradiction between adhesion performance and user comfort.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If phenyl silicone and hydrogenated polyisobutene are combined to provide gloss and adhesion, then gloss and adhesion are improved, but storage stability deteriorates

Engineering Contradiction:
ImproveadhesionVSAvoidstorage stability
Core Design Contradiction:
ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent employs a specific compound as an intermediary that stabilizes the formulation during storage. This intermediary substance prevents degradation and maintains the stability of the combination between phenyl silicone and hydrogenated polyisobutene over time, ensuring that the product retains its adhesion properties and does not separate or deteriorate during storage, thus resolving the contradiction between adhesion performance and storage stability.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention adjusts the molecular weight and structural parameters of the components to optimize long-term stability. By carefully selecting and controlling these parameters, the patent ensures that the formulation remains stable during storage while maintaining excellent adhesion properties, thereby resolving the contradiction between adhesion performance and storage stability.

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 composition achieves excellent gloss, adhesion, feeling on use, and storage stability by ensuring compatibility among components.

Implementation Method 1

hydrogenated polyisobutene which is soluble with component (a)

Methodology Applied
Scientific EffectSolubility: Solvation

Data Source

PatentUS12447123B2Solid cosmetic
Publication Date: 2025.10.21 SHIN ETSU CHEMICAL CO LTD

AI summary

A solid cosmetic that has an excellent glossy feeling, excellent adhesion, and excellent storage stability and provides an excellent sensation when used. The solid cosmetic contains(a) diphenylsiloxy phenyl trimethicone,(b) a hydrogenated polyisobutene that is soluble with component (a),(c) at least one of isotridecyl isononanoate, isononyl isononanoate, triethylhexanoin, ethylhexyl palmitate, caprylic/capric triglyceride, neopentyl glycol dicaprate, diisostearyl malate, mineral oil, polyglyceryl polyisostearate, and sorbitan sesquiisostearate, and(d) wax.