Sanitary Cleaner Using Sulfamic Acid for Scale Removal

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Solution Overview

Problem

Conventional sanitary cleaners are ineffective in addressing persistent lime scale and bad odors in sanitary areas, with strong acids causing corrosion and environmental pollution, and failing to provide long-lasting odor control.

Innovation Solution

An aqueous sanitary cleaning composition comprising sulfamic acid or its derivatives, isotridecanol ethoxylate, and a specific perfume blend, which provides effective cleaning and long-lasting odor control without the need for personal protective equipment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If strong inorganic acids (hydrochloric acid, sulphuric acid) are used to remove persistent lime scale, then high-scale removing capability is achieved, but corrosion of metallic surfaces and environmental pollution occur

Engineering Contradiction:

Improvescale removing capabilityVSAvoidcorrosion and environmental pollution

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical parameter from strong inorganic acids to sulfamic acid and its derivatives, maintaining high acidity (5-10 wt% sulfamic acid) for effective scale removal while eliminating corrosion and environmental pollution issues associated with traditional strong acids

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent converts the harmful effect of strong acids into a beneficial alternative by using sulfamic acid, which provides the necessary acidity for scale removal without the harmful side effects of corrosion and pollution, thus turning a harmful substance into a safe and effective cleaning agent

Inventive Principle:

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

2Productivity

If conventional sanitary cleaners are used, then standard soil cleaning is achieved, but bad sanitary smells (urine, feces) are not effectively controlled

Engineering Contradiction:

Improvecleaning effectivenessVSAvoidbad sanitary smell

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent creates a multi-functional cleaning composition that not only cleans standard soil effectively but also addresses and controls bad sanitary smells, combining cleaning and deodorizing functions in a single product

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent uses a composite formulation combining sulfamic acid for cleaning, surfactants for soil removal, and specific perfume compounds (including cyclic esters and aliphatic esters) for odor control, creating a synergistic composition that addresses multiple sanitary issues simultaneously

Inventive Principle:

Principle #40Composite materials

3Productivity

If high acidity cleaning compositions are used to remove lime scale, then cleaning capability is improved, but material incompatibility occurs

Engineering Contradiction:

Improvecleaning capabilityVSAvoidmaterial compatibility

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent modifies the chemical composition parameter from traditional strong inorganic acids to sulfamic acid and its derivatives, maintaining the necessary acidity for effective lime scale removal while improving material compatibility and eliminating corrosion issues

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 effectively removes soil and odors in sanitary areas, offering improved odor control and safety, allowing for use without personal protective equipment, while maintaining cleaning efficacy.

Implementation Method 1

sulfamic acid or sulfamic acid derivative in an amount of about ≤10 wt.-%

Methodology Applied

Scientific EffectChemical dissolution:

Implementation Method 2

isotridecanol ethoxylate in an amount of about less than 3 wt.-%

Methodology Applied

Scientific EffectSurfactant action: Surfactant

Implementation Method 3

a perfume in an amount in a range of about ≥0.2 wt.-% to ≤0.5 wt.-%, wherein the perfume comprises at least one of the following compounds according to the general formulas I, II and III

Methodology Applied

Scientific EffectAdsorption: Adsorption

Data Source

PatentUS10519403B2Sanitary cleaner

Publication Date: 2019.12.31 ECOLAB USA INC

AI summary

The invention relates to an aqueous sanitary cleaning composition comprising a sulfamic acid in an amount of about ≤10 wt.-%, isotridecanol ethoxylate in an amount of about less than 3 wt.-%, a perfume in an amount in a range of about ≥0.2 wt.-% to ≤0.5 wt.-%, and water, wherein the wt.-% of the components are based on the total weight of the sanitary cleaning composition, and wherein the perfume comprises at least one of the compounds according to the general formulas I, II and III, and/or a compound according to the general formula IV.