Cutinase Washing Agents for Low-Temperature Polyester Care

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Solution Overview

Problem

Existing cleaning agents do not effectively reduce pilling and graying on textiles containing synthetic fibers like polyester, leading to premature wear and tear, and there is a lack of effective solutions for these issues beyond using cellulase on cotton textiles.

Innovation Solution

Incorporating a cutinase enzyme, identified through a metagenomic approach, into washing or cleaning agents, which is active at lower temperatures and effectively reduces pilling and graying on polyester textiles, even on already formed pills, while maintaining fabric integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If cellulase is used in cleaning agents, then pilling is reduced on cotton textiles, but it has no effect on polyester textiles

Engineering Contradiction:

Improveanti-pilling effectVSAvoidapplicability to different fiber types

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent changes the enzyme type from cellulase to cutinase, which has different substrate specificity and can effectively degrade polyester fibers. This parameter change in enzyme selection enables the cleaning agent to work on polyester textiles while maintaining anti-pilling effectiveness.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The cutinase enzyme demonstrated in this patent can work on both cotton and polyester textiles, providing universal anti-pilling protection across different fiber types. The enzyme shows broad applicability by effectively treating both natural and synthetic fibers.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If known cutinases and PET esterases are used, then PET degradation occurs, but they require high temperatures (>= 60°C) and work very slowly

Engineering Contradiction:

ImprovePET degradation rateVSAvoidoperating temperature

Core Design Contradiction:

ProductivityVSTemperature

Solution Approach 1:

The patent identifies a novel cutinase variant that maintains high enzymatic activity at lower temperatures (below 60°C). This parameter change in temperature optimization allows the enzyme to work effectively under milder washing conditions while achieving rapid PET degradation.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses a newly identified cutinase from leaf compost that degrades PET rapidly at low temperatures, replacing the need for high-temperature processing. This approach enables efficient textile treatment under gentler, more energy-efficient conditions.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Productivity

If repeated washing is performed, then textiles are cleaned, but pilling and graying increase

Engineering Contradiction:

Improvecleaning frequencyVSAvoidfabric appearance quality

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The cutinase enzyme in the cleaning agent performs preliminary protective action during each wash cycle by preventing fiber degradation and pill formation before they occur. This proactive protection maintains fabric appearance quality even with repeated washing.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent converts the potential harm of repeated washing (which causes pilling and graying) into a benefit by using cutinase to actively protect and renew fabric surfaces during each wash cycle. The enzyme transforms the washing process from damaging to protective, extending fabric lifespan and maintaining appearance quality.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 cutinase enzyme maintains fabric quality by preventing pilling and graying, extending the lifespan of polyester textiles and reducing the environmental impact by minimizing fabric replacement, thus reducing the CO2 footprint.

Implementation Method 1

The main effect of pilling is a visual impairment... The cutinase enzyme prevents or even reduces pilling on new polyester textiles... this cutinase shows rapid PET degradation at 50°C

Methodology Applied

Scientific EffectHydrolysis: Hydrolysis

Implementation Method 2

The present invention lies in the field of enzyme technology, in particular the anti-pilling effect of enzymes... the cutinase identified in leaf compost using a metagenomic approach is active under washing process conditions and exhibits various care properties for PET textiles

Methodology Applied

Scientific EffectEnzymatic degradation: Enzyme

Data Source

PatentEP3673035B1Improved care properties of polyester textiles ii

Publication Date: 2025.10.22 HENKEL KGAA

Figure 1

AI summary

The invention relates to the field of enzyme technology, in particular the anti-pilling action of enzymes, as used, for example, in washing and cleaning agents. The invention relates to an agent, in particular a washing or cleaning agent, which contains a cutinase, as defined herein. The invention further relates to a method for cleaning textiles and to the use of the agent according to the invention for removing soiling. The invention further relates to the use of a cutinase, as described herein, for reducing pilling effects in an agent, preferably a washing or cleaning agent.