Metathesized Polyol Esters for Stable Skin Softening

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Solution Overview

Problem

Existing fibrous structures, such as wet wipes, face challenges in providing effective skin softening benefits while maintaining stability and cost-effectiveness, due to the instability and high cost of traditional emollients, particularly silicones, which can lead to oxidation and negative consumer experiences like off odors and decreased softness performance.

Innovation Solution

Incorporating a metathesized unsaturated polyol ester with specific molecular weight and iodine value ranges, combined with clay minerals, rheology modifiers, emulsifiers, and preservatives, into the fibrous structure to enhance skin softening and stability, and potentially using natural sources for sustainable alternatives.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional emollients (silicones) are used to provide skin softening benefits, then skin softening performance is improved, but stability deteriorates due to oxidation leading to off odors and decreased softness performance

Engineering Contradiction:
ImprovestabilityVSAvoidoxidation
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical parameters of the emollient by using metathesized unsaturated polyol esters with specific molecular weight ranges (5,000-50,000 Daltons) and controlled iodine values (30-200). This parameter modification allows the emollient to maintain stability while providing skin softening benefits, resolving the oxidation issue associated with traditional silicones.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite emollient system by combining metathesized unsaturated polyol esters with emulsifiers and other auxiliary ingredients. This composite approach enhances the overall stability of the composition while maintaining the desired skin softening performance, addressing the reliability issue without sacrificing functionality.

Inventive Principle:
Principle #40Composite materials

2Object-affected harmful factors

If active levels of skin softening emollients are included in the composition, then skin softening benefits are improved, but rheology and stability issues worsen

Engineering Contradiction:
Improveskin softening benefitsVSAvoidrheology and stability
Core Design Contradiction:
Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

The patent optimizes the molecular weight parameter of the emollient to fall within 5,000-50,000 Daltons, which allows active levels of emollient to be included without causing severe rheology and stability issues. This parameter control enables the composition to maintain both skin softening benefits and compositional stability.

Inventive Principle:
Principle #35Parameter changes

3Object-affected harmful factors

If expensive emollients (silicones and functionalized silicones) are used to achieve skin softening, then skin softening performance is improved, but cost increases

Engineering Contradiction:
Improveskin softening performanceVSAvoidcost
Core Design Contradiction:
Object-affected harmful factorsVSQuantity of substance

Solution Approach 1:

The patent replaces expensive silicones with metathesized unsaturated polyol esters derived from renewable resources like vegetable oils. This substitution provides a cost-effective alternative that maintains skin softening performance while reducing dependency on expensive petrochemical-based emollients.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

By controlling the molecular weight and iodine value parameters of the metathesized unsaturated polyol esters, the invention optimizes the balance between performance and cost, achieving skin softening benefits without requiring expensive silicone-based emollients.

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 solution provides improved skin softening benefits with enhanced stability and reduced greasy feel, maintaining product performance and consumer satisfaction while exploring sustainable and cost-effective options for emollients.

Implementation Method 1

many of the unsaturated emollients used today are prone to oxidation, which can lead to consumer negatives related to off odors and decreased softness performance

Methodology Applied
Scientific EffectOxidation resistance: Oxidation

Data Source

PatentUS10285928B2Fibrous structures comprising metathesized unsaturated polyol esters
Publication Date: 2019.05.14 PROCTER & GAMBLE CO
  • US10285928B2 patent drawing
  • US10285928B2 patent drawing
  • US10285928B2 patent drawing

AI summary

A composition comprising a metathesized polyol ester that may be combined with a fibrous structure, including a wipe.