Polyimide Antimicrobial Cleaning Composition Film Formation

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Solution Overview

Problem

Current antimicrobial cleaning compositions for hard non-porous surfaces lack stability, effective cleaning, and long-lasting sanitization while also failing to provide a non-streaky and non-tacky finish.

Innovation Solution

An antimicrobial cleaning composition comprising a biocidal agent such as quaternary ammonium compounds, chlorhexidine salts, polymeric biguanides, or tertiary alkyl amines, combined with a polyimide, which forms a residual protective film on surfaces, providing at least 99.9% microbial reduction and a durable shine.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional antimicrobial cleaning compositions are used, then some sanitization benefit is provided, but they lack stability, effective cleaning, and long-lasting sanitization while also failing to provide a non-streaky and non-tacky finish

Engineering Contradiction:

Improvestability of compositionVSAvoidlong-lasting sanitization

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The invention combines a polyimide polymer with quaternary ammonium compounds to create a composite antimicrobial cleaning composition. The polyimide serves as a film-forming polymer that provides stability and long-lasting residual activity, while the quaternary ammonium compound delivers antimicrobial efficacy. This composite approach resolves the contradiction by achieving both composition stability and prolonged sanitization effect.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The invention specifies precise parameter ranges for the polyimide (0.05-5% by weight) and quaternary ammonium compound (0.01-2% by weight) to optimize both stability and duration of action. By carefully controlling these concentration parameters, the composition achieves enhanced stability while maintaining long-lasting antimicrobial protection.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If conventional antimicrobial cleaning compositions are used, then some cleaning effect is provided, but they leave the treated surface streaky or tacky

Engineering Contradiction:

Improvecleaning effectivenessVSAvoidsurface finish quality

Core Design Contradiction:

Ease of operationVSShape

Solution Approach 1:

The invention optimizes the concentration parameters of polyimide (0.05-5%) and quaternary ammonium compound (0.01-2%) to achieve the right balance between cleaning effectiveness and surface finish quality. These parameter adjustments ensure effective soil removal while preventing streaking and tackiness on the treated surface.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The polyimide polymer provides localized film-forming properties that create a uniform, non-streaky surface finish. The polymer distributes evenly across the surface, ensuring consistent quality without the defects commonly associated with conventional cleaners.

Inventive Principle:

Principle #3Local quality

3Productivity

If conventional antimicrobial cleaning compositions are used, then some sanitization is provided, but they lack long-lasting residual biocidal properties

Engineering Contradiction:

Improvesanitization efficiencyVSAvoidresidual biocidal properties

Core Design Contradiction:

ProductivityVSDuration of action of stationary object

Solution Approach 1:

The polyimide polymer forms a preliminary protective film on the surface that serves as a carrier for the quaternary ammonium compound. This film is deposited beforehand and provides a reservoir for sustained release of the antimicrobial agent, ensuring long-lasting residual biocidal properties while maintaining sanitization efficiency.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The composite of polyimide and quaternary ammonium compound creates a synergistic system where the polymer matrix extends the duration of action of the antimicrobial agent. This composite structure enables the surface to maintain residual biocidal properties for extended periods while preserving high sanitization efficiency.

Inventive Principle:

Principle #40Composite materials

4Reliability

If conventional antimicrobial cleaning compositions are used, then some antimicrobial effect is provided, but they lack good shine and lack of stickiness on the treated surface

Engineering Contradiction:

Improveantimicrobial efficacyVSAvoidshine and non-stickiness

Core Design Contradiction:

ReliabilityVSShape

Solution Approach 1:

The invention optimizes the concentration of polyimide (0.05-5%) to achieve the desired balance between antimicrobial efficacy and surface appearance. At these optimized levels, the polymer provides sufficient antimicrobial activity while forming a thin, uniform film that delivers good shine and eliminates stickiness.

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 delivers long-lasting antimicrobial protection and a clean, shiny surface without streaks or tackiness, maintaining effectiveness for at least 24 hours and withstanding multiple touches and abrasions.

Implementation Method 1

a polyimide, which forms a residual protective film on surfaces

Methodology Applied

Scientific EffectFilm formation: Coatings

Implementation Method 2

providing at least 99.9% microbial reduction

Methodology Applied

Scientific EffectAntimicrobial action:

Data Source

PatentEP4298906A1Antimicrobial composition comprising a polyimide

Publication Date: 2024.01.03 PROCTER & GAMBLE CO

AI summary

An aqueous antimicrobial cleaning composition comprising a biocidal agent and a polyimide.