Odor-Inhibiting Hygienic Compositions Using Chelation and Membrane Lysing Agents
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Solution Overview
Problem
Existing odor-inhibiting compositions for hygienic articles face a trade-off between improving odor control and maintaining desirable properties like centrifuge retention capacity (CRC) and absorbance against pressure (AAP), as adding odor control agents often reduces these absorbency properties.
Innovation Solution
A binary or ternary mixture of odor control agents, including a chelation agent and a membrane lysing compound, is used in conjunction with water-absorbing polymer particles, allowing for reduced impact on absorbency properties while enhancing odor control efficacy, with specific agents like EDTA, 1,2-decanediol, and cetrimonium chloride being employed at optimized concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If odor control agents are added to improve odor-inhibiting ability, then odor control efficacy is improved, but centrifuge retention capacity and absorbance against pressure deteriorate
Solution Approach 1:
The odor control function is segmented into two distinct mechanisms: chelation agents that bind metal ions catalyzing bacterial growth, and membrane lysing compounds that directly disrupt bacterial cell membranes. This segmentation allows each agent to work through a different pathway, reducing the need for high concentrations of a single agent and thereby preserving absorbency properties while achieving effective odor control
Solution Approach 2:
The invention uses a composite odor control system combining two types of chemical agents with different mechanisms of action. The chelation agent (e.g., EDTA, sodium triphosphate) works synergistically with the membrane lysing compound (e.g., cetrimonium chloride, 1,2-decanediol) to provide comprehensive odor inhibition through multiple pathways, allowing effective odor control at lower overall concentrations that do not compromise CRC and AAP
2Object-affected harmful factors
If the amount of odor control agents is increased, then odor-inhibiting ability is improved, but other desirable properties of the composition deteriorate
Solution Approach 1:
The invention optimizes the concentration parameters of odor control agents within specific ranges (chelation agent: 0.1-2.0 wt%, membrane lysing compound: 0.1-5.0 wt%) to achieve effective odor control (ammonia breakthrough time >45 hours) while maintaining desirable composition properties. This parameter optimization allows effective odor inhibition without excessive amounts of additives that would compromise other properties
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 significant ammonia breakthrough time exceeding 45 hours at 23 °C with minimal impact on CRC and AAP, demonstrating high odor control efficacy without compromising absorbency properties.
Implementation Method 1
a first odor control agent comprising a chelation agent, wherein the chelation agent is selected from a group consisting of: ethylenediaminetetraacetic acid (EDTA), nitrilotris(methylene)triphosphonic acid, sodium triphosphate pentabasic, N-carboxymethylated polyethyleneimine, and 1-hydroxyethane 1,1-diphosphonic acid or salts thereof
Implementation Method 2
the second odor control agent is a membrane lysing compound selected from a group consisting of: 1,2-decanediol, cetrimonium chloride, cocamidopropyl betaine, poly(t-butylaminoethylmethacrylate), behentrimonium, and 1,2-pentanediol
Implementation Method 3
water-absorbing polymer particles; a first odor control agent comprising a chelation agent; and a second odor control agent
Data Source
AI summary
Disclosed herein are embodiments of odor-inhibiting compositions and hygienic articles incorporating the same. In some embodiments, an odor-inhibiting composition comprises water-absorbing polymer particles; a first odor control agent comprising a chelation agent; and a second odor control agent.