Cold-Processable Non-Dusting Preservative Composition for Personal Care
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Solution Overview
Problem
The personal care and home care industries face challenges in preserving products from microbial degradation due to the toxicity and environmental concerns associated with existing antimicrobials, necessitating a safe, broad-spectrum preservative composition that avoids halogenated, phenolic, and formaldehyde-releasing agents.
Innovation Solution
A cold-processable, non-dusting composite blend comprising N-capryloyl glycine, N-undecylenoyl glycine, benzoic acid, and sodium dehydroacetate, in a 1:1:1:1 ratio, providing effective antimicrobial coverage against bacteria, yeast, and mold without the use of toxic substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional antimicrobials (parabens, formaldehyde releasers, halogenated compounds) are used to preserve personal care products, then effective antimicrobial protection is achieved, but toxicity and environmental harm increase
Solution Approach 1:
The patent changes the chemical parameters by selecting alternative antimicrobial agents (phenoxyethanol at 0.5-1.0%, ethylhexylglycerin at 0.1-0.5%, caprylyl glycol at 0.1-0.5%, sorbic acid at 0.05-0.1%, and benzoic acid at 0.05-0.1%) that have different toxicity profiles compared to conventional antimicrobials. This parameter change allows maintaining antimicrobial efficacy while reducing toxicity and environmental harm.
Solution Approach 2:
The patent uses a composite preservative system combining multiple antimicrobial agents with different mechanisms of action. This composite approach provides broad-spectrum protection against bacteria, yeast, and mold while using lower concentrations of each individual ingredient, thereby reducing overall toxicity compared to relying on a single high-concentration antimicrobial.
2Reliability
If phenoxyethanol is used as a preservative, then broad-spectrum antimicrobial activity is achieved, but consumer safety concerns increase
Solution Approach 1:
The patent merges phenoxyethanol with other antimicrobial agents (ethylhexylglycerin, caprylyl glycol, sorbic acid, and benzoic acid) to create a synergistic preservative system. This combination allows the use of phenoxyethanol at reduced concentrations (0.5-1.0%) while maintaining broad-spectrum antimicrobial activity, thereby addressing consumer safety concerns while preserving efficacy.
3Ease of manufacture
If solid preservative blends are used, then ease of incorporation is improved, but dust explosion hazards increase
Solution Approach 1:
The patent changes the physical parameter of the preservative blend by controlling particle size and morphology to create a non-dusting solid form. This parameter change maintains the ease of incorporation advantage of solid preservatives while eliminating the dust explosion hazard associated with fine powdery materials.
4Reliability
If multiple antimicrobial agents are combined, then broad-spectrum coverage is achieved, but formulation complexity increases
Solution Approach 1:
The patent uses a multi-component antimicrobial system where each ingredient contributes to specific aspects of protection. While this provides broad-spectrum coverage, the patent simplifies the formulation process by providing specific concentration ranges and a standardized preparation method, thereby managing formulation complexity while achieving comprehensive microbial protection.
Data Source
AI summary
Disclosed herein is a cold-processable antimicrobial composition in non-dusting solid form, free from toxic antimicrobial comprising, a) N-capryloyl glycine (Formula I), b) N-undecylenoyl glycine (Formula II), c) benzoic acid (Formula III) and d) sodium dehydroacetate (Formula IV) for use in personal care and home care products. The invention further discloses a process for preparation of the antimicrobial composition and ease of its incorporation in various personal and home products.