Cation Polymer Cleaner for Pump Foamer Clogging

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Solution Overview

Problem

Existing cleaner compositions for pump foamer containers often clog due to high molecular weight cation polymers, compromising foam resilience and persistence, and unsatisfactory washing feel.

Innovation Solution

Incorporating a soap neutralized with sodium N-methyltaurate and a polymer with dimethyl diallyl ammonium chloride as a monomer unit, with a molecular weight of 200,000 or less, to prevent clogging and enhance foam resilience and persistence.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If a cation polymer with large molecular weight is included in the cleaner to impart resilience and persistence to the foam, then the foam resilience and persistence are improved, but clogging is likely to occur in the porous film or passage

Engineering Contradiction:
Improvefoam persistenceVSAvoidclogging resistance
Core Design Contradiction:
Duration of action of moving objectVSReliability

Solution Approach 1:

The patent applies parameter changes by precisely controlling the molecular weight of the cation polymer to be 200,000 or less. This parameter optimization allows the polymer to provide sufficient foam resilience and persistence while preventing clogging in the porous film or passage, thereby resolving the contradiction between foam duration and clogging resistance

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses a composite approach by combining a specific cation polymer (with controlled molecular weight) and a soap obtained by neutralizing a higher fatty acid with sodium N-methyltaurate. This composite formulation synergistically provides both foam resilience/persistence and clogging prevention, addressing the technical contradiction

Inventive Principle:
Principle #40Composite materials

2Duration of action of moving object

If a cation polymer is included in the cleaner to improve foam resilience, then the foam resilience is improved, but the feeling after washing off is not satisfactory

Engineering Contradiction:
Improvefoam resilienceVSAvoidwashing feel
Core Design Contradiction:
Duration of action of moving objectVSEase of operation

Solution Approach 1:

The patent optimizes the molecular weight parameter of the cation polymer to 200,000 or less, which balances foam resilience with acceptable washing feel. This parameter control ensures that the polymer provides sufficient foam stability without creating a rough or uncomfortable sensation after washing

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent formulates a composite cleaner system combining the optimized cation polymer with a specifically prepared soap (from neutralizing higher fatty acid with sodium N-methyltaurate). This composite formulation achieves both foam resilience and satisfactory washing feel by leveraging the complementary properties of both components

Inventive Principle:
Principle #40Composite materials

3Ease of manufacture

If a soap obtained by neutralizing a higher fatty acid with conventional neutralizing agents is used, then the cleaning function is provided, but sufficient foam resilience cannot be obtained

Engineering Contradiction:
Improvecleaning functionVSAvoidfoam resilience
Core Design Contradiction:
Ease of manufactureVSDuration of action of moving object

Solution Approach 1:

The patent changes the chemical parameter of the neutralizing agent from conventional agents to sodium N-methyltaurate. This chemical substitution produces a soap with superior foam resilience while maintaining effective cleaning function, resolving the contradiction between ease of manufacture and foam performance

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent employs a specialized neutralizing agent (sodium N-methyltaurate) that may be less conventional but provides superior performance. This approach prioritizes functional effectiveness over manufacturing simplicity, achieving sufficient foam resilience that justifies the specialized chemical process

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

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 allows for repeated use of the cleaner without clogging, maintaining excellent foam resilience and persistence, and improving the washing feel.

Implementation Method 1

a pump foamer container that internally includes a porous film and discharges the contents in a foam with air

Methodology Applied
Scientific EffectFoam: Foam

Implementation Method 2

a soap that is obtained by neutralizing a higher fatty acid with sodium N-methyltaurate

Methodology Applied
Scientific EffectSurfactant: Surfactant

Data Source

PatentUS11684556B2Cleaner composition
Publication Date: 2023.06.27 SHISEIDO CO LTD

AI summary

Provided is a cleaner composition which causes no malfunction due to clogging even when contained in a pump foamer container, or the like, and repeatedly used, and is excellent in resilience and persistence of foam, and feeling after washing off. The cleaner composition includes a soap that is obtained by neutralizing a higher fatty acid with sodium N-methyltaurate, and a polymer including dimethyl diallyl ammonium chloride as a monomer unit and having a molecular weight of 200000 or less.