Zwitterionic Copolymer Cleaning Composition for Streak-Free Surfaces

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Solution Overview

Problem

Current hard surface cleaning compositions fail to effectively prevent filming and streaking, maintain shine, provide soil repellency, facilitate next-time cleaning, and dry quickly on inclined or vertical surfaces.

Innovation Solution

A hard surface cleaning composition comprising a specific copolymer, preferably with a zwitterionic unit and vinyl-pyrrolidone units, which improves filming and streaking performance, shine, soil repellency, next-time cleaning benefits, and fast-drying properties when used on various surfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-generated harmful factors

If conventional cleaning compositions are used, then cleaning action is provided, but visible filming and streaking occur on the surface

Engineering Contradiction:
Improvevisible filming and streakingVSAvoidsurface appearance quality
Core Design Contradiction:
Object-generated harmful factorsVSManufacturing precision

Solution Approach 1:

The patent changes the chemical parameters of the cleaning composition by incorporating specific polymers (polymer I with weight average molecular weight 100,000-1,000,000 and polymer II with number average molecular weight 10,000-100,000) in controlled ratios (0.1-10% and 0.1-5% respectively). This parameter optimization resolves the contradiction by achieving complete surface coverage that prevents filming and streaking while maintaining cleaning effectiveness.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses a composite polymer system combining two different polymer types with distinct molecular weight characteristics. Polymer I provides structural integrity and coverage, while polymer II enhances wetting and distribution. This composite approach eliminates visible residues and streaks while maintaining effective cleaning action.

Inventive Principle:
Principle #40Composite materials

2Object-generated harmful factors

If conventional cleaning compositions are used, then soil removal is achieved, but soil repellency is not provided

Engineering Contradiction:
Improvesoil depositionVSAvoidsoil repellency performance
Core Design Contradiction:
Object-generated harmful factorsVSReliability

Solution Approach 1:

The patent modifies the chemical parameters of the cleaning solution by incorporating specific concentrations of polymers I and II, which create a residual film with optimized surface energy characteristics. This film provides durable soil repellency by reducing the adhesion of new soil deposits, addressing the contradiction between effective soil removal and prevention of future soil accumulation.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If conventional cleaning compositions are used, then cleaning effectiveness is provided, but fast-drying on inclined or vertical surfaces is not achieved

Engineering Contradiction:
Improvedrying speedVSAvoidapplication on inclined or vertical surfaces
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The patent optimizes the viscosity and surface tension parameters of the cleaning composition through the selective use of polymers I and II. This parameter adjustment enables the solution to maintain adequate wetting and adhesion on vertical and inclined surfaces during application, then rapidly evaporate or drain after cleaning, achieving both ease of operation and fast-drying performance.

Inventive Principle:
Principle #35Parameter changes

4Reliability

If conventional cleaning compositions are used, then initial cleaning is achieved, but next time cleaning benefit is not provided

Engineering Contradiction:
Improvesubsequent cleaning facilitationVSAvoidsubsequent cleaning time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by leaving a controlled residual film of polymers I and II on the cleaned surface. This film pre-treats the surface by providing ongoing soil repellency and reducing adhesion of future soil deposits, thereby facilitating subsequent cleaning operations and reducing the time required for next cleaning cycles.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP2025743B1Hard surface cleaning compostion
Publication Date: 2011.04.13 PROCTER & GAMBLE CO
  • EP2025743B1 patent drawing
  • EP2025743B1 patent drawing
  • EP2025743B1 patent drawing

AI summary

The present invention relates to a hard surface cleaning composition comprising a copolymer, wherein said copolymer comprises a zwitterionic unit A or a mixture thereof and another unit B or a mixture thereof, wherein said unit A comprises a betaine group or a mixture thereof and wherein said betaine group of said unit A is a sulphobetaine group or a mixture thereof, and wherein said unit B is derived from vinyl-pyrrolidone.