Intercalated Magnesium Hypochlorite for Stable Bleach Formulations

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Solution Overview

Problem

Current chlorine bleach products do not offer excellent performance across a wide range of criteria such as formulation flexibility, odor, stability, and moisture sensitivity, making them unsuitable for various applications.

Innovation Solution

Development of intercalated bleach compositions with a molar ratio of alkaline earth metal to hypochlorite of at least 3:1, which are stable, odorless, and exhibit improved pH buffering characteristics, allowing for controlled hypochlorite release and compatibility with various adjuvants, including surfactants and acids.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional chlorine bleach products are used, then cleaning and bleaching effectiveness is achieved, but formulation flexibility and odor characteristics deteriorate

Engineering Contradiction:
Improvecleaning and bleaching effectivenessVSAvoidformulation flexibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent changes the chemical parameters by using magnesium or calcium hypochlorite with a molar ratio of metal to hypochlorite of at least 3:1, creating an intercalated structure that provides both effectiveness and formulation flexibility while reducing odor

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite material system combining magnesium or calcium hypochlorite with oxidizing agents, achieving synergistic effects that improve both cleaning effectiveness and formulation flexibility simultaneously

Inventive Principle:
Principle #40Composite materials

2Illumination intensity

If sodium hypochlorite phosphate adduct is used, then solution clarity is improved, but compatibility with certain applications deteriorates due to phosphate content

Engineering Contradiction:
Improvesolution clarityVSAvoidcompatibility with laundry detergents
Core Design Contradiction:
Illumination intensityVSAdaptability or versatility

Solution Approach 1:

The patent extracts and removes phosphates from the bleach formulation by using magnesium or calcium hypochlorite instead of sodium hypochlorite phosphate adduct, maintaining solution clarity while eliminating the incompatibility with laundry detergents

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

By changing the metal cation from sodium to magnesium or calcium and adjusting the molar ratio to at least 3:1, the patent achieves phosphate-free formulation that maintains solution clarity and improves compatibility with laundry applications

Inventive Principle:
Principle #35Parameter changes

3Quantity of substance

If existing bleach products are used, then chlorine availability is achieved, but stability and moisture sensitivity deteriorate

Engineering Contradiction:
Improvechlorine availabilityVSAvoidstability and moisture sensitivity
Core Design Contradiction:
Quantity of substanceVSStability of the object's composition

Solution Approach 1:

The patent changes the metal cation to magnesium or calcium with a molar ratio of at least 3:1, which fundamentally alters the stability parameters and reduces moisture sensitivity while maintaining chlorine availability

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The intercalated magnesium or calcium hypochlorite structure provides a stable, moisture-resistant formulation that maintains chlorine availability over time without the degradation issues of conventional products

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

4Reliability

If conventional bleach formulations are used, then cleaning capability is achieved, but compatibility with adjuvants deteriorates

Engineering Contradiction:
Improvecleaning capabilityVSAvoidcompatibility with adjuvants
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The magnesium or calcium hypochlorite intercalated structure provides universal compatibility with various adjuvants including surfactants, acids, and other cleaning agents, enabling multi-functional formulations while maintaining cleaning capability

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

By adjusting the metal cation and molar ratio parameters, the patent creates a chemically compatible formulation that works synergistically with a broad range of adjuvants, expanding formulation versatility

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 intercalated bleach compositions demonstrate enhanced stability, reduced odor, and improved compatibility with adjuvants, providing effective cleaning and disinfecting capabilities while maintaining stability in humid environments and avoiding self-propagating decomposition reactions.

Implementation Method 1

The intercalated bleach compositions demonstrate enhanced stability, reduced odor, and improved compatibility with adjuvants, providing effective cleaning and disinfecting capabilities while maintaining stability in humid environments and avoiding self-propagating decomposition reactions

Methodology Applied
Scientific EffectDecomposition: Decomposition (biological)

Implementation Method 2

Development of intercalated bleach compositions with a molar ratio of alkaline earth metal to hypochlorite of at least 3:1, which are stable, odorless, and exhibit improved pH buffering characteristics, allowing for controlled hypochlorite release

Methodology Applied
Scientific EffectpH buffering:

Data Source

PatentUS9040475B2Intercalated bleach compositions, related methods of manufacture and use
Publication Date: 2015.05.26 THE CLOROX CO
  • US9040475B2 patent drawing
  • US9040475B2 patent drawing
  • US9040475B2 patent drawing

AI summary

The invention relates to compositions, methods of use, and methods of manufacture for an intercalated bleach compound and compositions thereof. The intercalated bleach compound has the formula Mx(OCl)y(O)m(OH)n where M is an alkaline earth metal such as magnesium, calcium or mixture thereof. The values of x and y independently equal any number greater than or equal to 1 (e.g., 1, 2, 3, 4, etc.), and m and n independently equal any number greater than or equal to 0 (e.g., 0, 1, 2, 3, 4, etc.), but m and n are not both 0. In addition, the molar ratio of the alkaline earth metal (e.g., magnesium or calcium) to hypochlorite is at least 3:1. In other words, x is ≧3y. The compounds exhibit excellent stability, little or no chlorine bleach odor, exhibit excellent pH buffering characteristics, and less reactivity with organic materials as compared to alternative chlorine bleach products.