Deodorant Composition Using Crystalline Zinc Oxide and Hydrazide
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Solution Overview
Problem
Existing deodorants with chemical adsorption capabilities are limited in effectively addressing complex odors, as they often interact negatively when used in combination, leading to deteriorated performance and potential color changes or aggregation.
Innovation Solution
A deodorant composition comprising specific crystalline zinc oxide, amorphous aluminum silicate, and a hydrazide compound, optimized through X-ray powder diffraction measurements, which provides a high deodorizing effect for complex odors including acidic, basic, sulfur-based, and aldehyde gases without significant color change or processability issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple chemical adsorption-type deodorants are used in combination to address complex odors, then the deodorizing coverage is improved, but the reactive groups interact and impair deodorizing performance
Solution Approach 1:
The patent uses alumina as a carrier material to support the hydrazide compound. The alumina acts as an intermediary that prevents direct interaction between reactive groups of different deodorants while maintaining their individual deodorizing functions. This resolves the contradiction by enabling multi-component combinations (improving coverage) without negative interactions (preserving performance).
Solution Approach 2:
The patent creates a composite deodorant system combining hydrazide compound, alumina carrier, and optionally zinc oxide and aluminum silicate. This composite structure allows multiple deodorizing mechanisms to work together synergistically while the alumina matrix prevents harmful interactions, achieving both broad coverage and maintained performance.
2Quantity of substance
If activated carbon is used for deodorizing, then the adsorption capacity is improved, but the color becomes black and production of white or chromatic products is difficult
Solution Approach 1:
The patent changes the material parameters from activated carbon to alumina-based compounds with specific surface area and pore structure characteristics. This parameter change maintains high adsorption capacity (40-600 m²/g surface area) while achieving white or light colors suitable for various applications.
Solution Approach 2:
The patent employs alumina and aluminum silicate as porous materials with controlled pore volumes (0.3-2.0 mL/g) and surface areas. These porous structures provide high adsorption capacity comparable to activated carbon while maintaining light color appearance, resolving the color limitation.
3Quantity of substance
If activated carbon is used for deodorizing, then the physical adsorption is improved, but the adsorption capacity is immediately saturated and requires replacement
Solution Approach 1:
The patent replaces physical adsorption (mechanical system) with chemical adsorption through hydrazide compounds. Chemical adsorption forms stronger bonds between deodorant and odor molecules, preventing immediate saturation and release. This extends service life while maintaining adsorption capacity.
Solution Approach 2:
The patent changes the adsorption mechanism parameter from physical to chemical by introducing hydrazide functional groups. This parameter change transforms the adsorption characteristics to achieve both high capacity and extended duration of action without immediate saturation.
4Reliability
If zinc oxide with high surface area is used for sulfur-based gas deodorizing, then the deodorizing effect is improved, but the particle size must be controlled to prevent aggregation
Solution Approach 1:
The patent uses alumina as a carrier material that supports zinc oxide particles. The alumina matrix acts as a spacer that prevents aggregation of fine zinc oxide particles while maintaining their high surface area. This resolves the contradiction by enabling high deodorizing effect without particle aggregation instability.
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 achieves an excellent deodorizing effect for a broad range of gases, maintaining performance and versatility, with a white or light color, suitable for various applications including coatings and resin molded articles.
Implementation Method 1
a deodorant that utilizes chemical adsorption and has a white or light color has been developed
Data Source
AI summary
The deodorant composition of the present invention includes an amorphous aluminum silicate, a hydrazide compound, and a crystalline zinc oxide in which at least two peaks among three peaks detected within a diffraction angle (2θ) range from 30 to 38 degrees when the crystalline zinc oxide is subjected to X-ray powder diffraction measurement have a half width of 0.4 to 1.2 degrees in an X-ray diffraction chart, wherein a content of the crystalline zinc oxide is in a range from 100 to 500 parts by mass based on 100 parts by mass of the hydrazide compound, and wherein a content of the amorphous aluminum silicate is in a range from 100 to 750 parts by mass based on 100 parts by mass of the hydrazide compound.