Method to boost fabric softener performance

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Solution Overview

Problem

Existing fabric softening compositions struggle to effectively soften textiles in the harsh industrial and institutional laundry settings, where high alkalinity and elevated temperatures can cause premature yellowing or dulling of fabrics, particularly white linens.

Innovation Solution

The use of a boosted fabric softening system that combines a fabric conditioning composition containing quaternary ammonium compounds and amino-functionalized silicone compounds with a softening booster composition, such as clay-based, quaternary ammonium compound-based, or sucrose ester-based boosters, applied during a single wash cycle or rinse cycle to achieve improved softness and resistance to yellowing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional fabric softening compositions are used in industrial and institutional settings with high alkalinity and elevated temperatures, then fabric softening is achieved, but premature yellowing or dulling of fabrics occurs

Engineering Contradiction:
Improvefabric softening effectivenessVSAvoidyellowing and dulling of fabrics
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a booster composition as an intermediary substance that mediates between the harsh industrial washing conditions (high alkalinity, elevated temperatures) and the fabric. This booster contains specific ingredients that protect the fabric from yellowing and dulling while allowing the conventional fabric softening composition to maintain its softening effectiveness. The booster acts as a protective layer or buffer that prevents direct harmful interaction between the washing conditions and the fabric.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention combines multiple components into a composite treatment system consisting of both the conventional fabric softening composition and the specially formulated booster composition. This composite approach integrates the softening agents (which provide the desired softness) with protective agents in the booster (which prevent yellowing and dulling), creating a synergistic system that achieves both softening and fabric protection simultaneously under industrial washing conditions.

Inventive Principle:
Principle #40Composite materials

2Productivity

If harsh industrial and institutional washing conditions are used, then washing efficiency is improved, but fabric degradation and yellowing increase

Engineering Contradiction:
Improvewashing efficiencyVSAvoidfabric degradation and yellowing
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The booster composition serves as an intermediary that enables the use of harsh industrial washing conditions (high temperature, high alkalinity) without directly exposing the fabric to their full detrimental effects. The booster absorbs or mitigates the harmful impacts while allowing the efficient washing process to continue, thus maintaining productivity while reducing fabric degradation.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Strength

If conventional softeners are used to achieve softness, then fabric softness is improved, but yellowing occurs after multiple drying cycles

Engineering Contradiction:
Improvefabric softnessVSAvoiddurability of whiteness after multiple cycles
Core Design Contradiction:
StrengthVSDuration of action of stationary object

Solution Approach 1:

The booster composition is applied in advance during the washing process to establish a protective effect on the fabric before the drying cycles begin. This preliminary action of the booster prevents the yellowing that would otherwise occur during subsequent multiple drying cycles, thereby extending the duration of whiteness retention while maintaining the softness provided by the conventional softener.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The combination of conventional softening agents and booster ingredients creates a composite treatment that provides both immediate softness and long-term whiteness retention. The softening component delivers the desired tactile softness, while the protective component in the booster ensures this softness and whiteness are maintained over multiple washing and drying cycles.

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

This approach provides superior softness to textiles, equivalent to or exceeding that achieved by consumer home use softeners, while preventing significant yellowing or dulling, even after multiple washing and drying cycles in high-alkalinity and high-temperature conditions.

Implementation Method 1

Softening booster compositions, including clay-based softening booster compositions

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 2

fabric conditioning composition comprising a quaternary ammonium compound

Methodology Applied
Scientific EffectDeposition: Deposition (physical)

Implementation Method 3

amino-functionalized silicone compound

Methodology Applied
Scientific EffectDeposition: Deposition (physical)

Data Source

PatentEP3221506B1Method to boost fabric softener performance
Publication Date: 2025.04.09 ECOLAB USA INC
  • EP3221506B1 patent drawingFigure 1
  • EP3221506B1 patent drawingFigure 2
  • EP3221506B1 patent drawingFigure 3

AI summary

Method for treating a textile under industrial and institutional fabric care conditions to impart softness within a single wash and/or rinse cycle are disclosed. More particularly, the present invention relates to a combination of a liquid or solid fabric conditioning composition and a softening booster for treating a textile to impart softness within a single wash and/or rinse cycle. Compositions employed therein are further disclosed.