Cationic Inulin Dishwashing Composition for Rinsing and Viscosity Control

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Solution Overview

Problem

Existing liquid hand dishwashing detergents face challenges in balancing efficient rinsing and foam stability with acceptable solution feel and viscosity control, while also meeting consumer demands for biodegradability and natural ingredients.

Innovation Solution

A liquid hand dishwashing detergent composition comprising a surfactant system of anionic surfactants and a cationically modified inulin compound, which includes alkyl sulphate surfactants, amphoteric co-surfactants, and zwitterionic co-surfactants, to improve rinsing, solution feel, and viscosity control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If anionic surfactants are used to provide foaming and cleaning benefits, then cleaning effectiveness is improved, but foam rinsing properties deteriorate

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidfoam rinsing properties
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

A cationically modified inulin compound is introduced as an intermediary substance that mediates between the anionic surfactant system and the rinsing process. This polysaccharide derivative with cationic groups interacts with the anionic surfactants to modify foam structure and improve rinsing characteristics while preserving cleaning effectiveness.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention creates a composite surfactant system combining anionic surfactants with cationically modified inulin. This composite material integrates the cleaning power of anionic surfactants with the rinsing benefits of cationic polysaccharides, achieving both effective cleaning and easy rinsing simultaneously.

Inventive Principle:
Principle #40Composite materials

2Ease of operation

If cationically modified hydroxyethyl cellulose is used to provide skin care benefits and foam rinsing, then foam rinsing is improved, but finished product viscosity increases and solution feel deteriorates

Engineering Contradiction:
Improvefoam rinsingVSAvoidfinished product viscosity
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The invention changes the chemical parameters of the cationic polysaccharide by using cationically modified inulin instead of cationically modified hydroxyethyl cellulose. This parameter change in the polysaccharide structure (different backbone chemistry) achieves similar foam rinsing benefits while having a different impact on viscosity and solution feel characteristics.

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 improved rinsing performance, enhanced solution feel, and controlled viscosity, addressing the drawbacks of traditional anionic surfactants and cationically modified hydroxyethyl cellulose, while being biodegradable and natural.

Implementation Method 1

formulating liquid hand dishwashing detergent compositions containing a) from about 5.0% to about 50% by weight of the liquid hand dishwashing detergent composition of a surfactant system, where the surfactant system comprises i. an anionic surfactant... ii. a co-surfactant... and b. a cationically modified inulin compound

Methodology Applied
Scientific EffectCationic-Anionic Interaction: Ion Repulsion/Attraction

Data Source

PatentUS12606776B2Liquid hand dishwashing detergent composition comprising a cationically modified inulin
Publication Date: 2026.04.21 PROCTER & GAMBLE CO
  • US12606776B2 patent drawing
  • US12606776B2 patent drawing
  • US12606776B2 patent drawing

AI summary

A liquid hand dishwashing detergent composition containing a cationically modified inulin compound, methods of making the liquid hand dishwashing detergent compositions, and methods of using said liquid hand dishwashing detergent compositions, which provide improved rinsing, solution feel, and finished product viscosity control.