Biosourced Gelling Polyamides for Low-Concentration Smooth Oil Gels

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Solution Overview

Problem

Existing gelling polyamides are not biosourced, require high concentrations to gel common oils, and result in undesirable granular effects in cosmetic products.

Innovation Solution

Develop novel polyamide derivatives from biosourced diacids and diamines, combined with diacid polyesters, to form gels with low concentration gelling capabilities and smooth textures, suitable for cosmetic and pharmaceutical applications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If existing gelling polyamides are used to gel cosmetic oils, then gelling capability is achieved, but high concentrations are required which increases manufacturing costs

Engineering Contradiction:

Improvegelling agent concentrationVSAvoidmanufacturing cost

Core Design Contradiction:

Quantity of substanceVSEase of manufacture

Solution Approach 1:

The patent modifies the chemical structure of polyamides by incorporating specific amino acid derivatives and controlling molecular weight distribution, which fundamentally changes the gelling mechanism to achieve effective gelling at concentrations below 5%, dramatically reducing the quantity of gelling agent required compared to conventional polyamides

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If existing gelling polyamides are used in cosmetic products, then gelling function is provided, but granular effects occur which deteriorate product texture

Engineering Contradiction:

Improveproduct textureVSAvoidgranular effect

Core Design Contradiction:

Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The patent creates polyamides with controlled local molecular structures including specific amino acid sequences and side chain configurations that prevent crystallization and granule formation, ensuring smooth texture throughout the cosmetic product while maintaining gelling functionality

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The invention uses composite polyamide structures combining different amino acid derivatives with complementary properties, where the synergistic interaction between different molecular components prevents granular precipitation and ensures homogeneous smooth texture in the final cosmetic formulation

Inventive Principle:

Principle #40Composite materials

3Reliability

If biosourced materials are used to create gelling polyamides, then environmental sustainability is improved, but gelling capability at low concentrations is not achieved

Engineering Contradiction:

Improvegelling efficiencyVSAvoidbiosourced origin

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent optimizes parameters of biosourced polyamides including molecular weight, polydispersity index, and amino acid composition to achieve gelling efficiency comparable to or exceeding conventional polyamides, proving that biosourced origin does not compromise gelling performance when properly engineered

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 novel polyamide gels are 100% biosourced, gel at low concentrations, provide a smooth texture, and maintain transparency, with rheofluidizing and thixotropic properties, suitable for various cosmetic and pharmaceutical formulations.

Implementation Method 1

a polyamide compound soluble in the oils and able to gel them

Methodology Applied

Scientific EffectGel formation: Gel

Implementation Method 2

an amide derivative of low molar mass is first obtained by functionalizing a diacid by a diamine

Methodology Applied

Scientific EffectHydrogen bonding:

Implementation Method 3

the thermoreversible and rheofluidizing character thereof

Methodology Applied

Scientific EffectThermoreversibility:

Implementation Method 4

the thermoreversible and rheofluidizing character thereof

Methodology Applied

Scientific EffectRheofluidizing:

Implementation Method 5

a polyamide compound soluble in the oils

Methodology Applied

Scientific EffectSolvation: Solvation

Data Source

PatentUS12583971B2Biosourced gelling polyamides

Publication Date: 2026.03.24 POLYMEREXPERT

AI summary

The invention relates to novel biosourced polyamide derivatives able to form gels, the method for preparing same, the gels formed from these gelling polyamides, as well the compositions containing them, in particular cosmetic compositions.