Bis-ethylhexyloxyphenol Methoxyphenyl Triazine Sunscreen Stain Reduction
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Solution Overview
Problem
Existing sunscreens containing non-water-soluble UVA and broadband filters like bis-ethylhexyloxyphenol methoxyphenyl triazine cause stubborn stains on light-colored textiles, which are difficult to remove and worsen during washing due to interactions with washing water ions.
Innovation Solution
A cosmetic preparation combining bis-ethylhexyloxyphenol methoxyphenyl triazine with cellulose gum, iminodisuccinate, and diethylenetriaminepenta(methylenephosphonic acid)/DTPMP, which facilitates easier removal from textiles by reducing staining and improving washability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-water-soluble UVA and broadband filters such as bis-ethylhexyloxyphenol methoxyphenyl triazine are used in sunscreen preparations, then UV protection efficacy is improved, but textile staining is worsened
Solution Approach 1:
The patent introduces washing water ions (calcium, magnesium) as intermediaries that complex with the sunscreen filter molecules. These metal ions act as mediators between the non-water-soluble filter and water, forming water-soluble complexes that can be easily rinsed from textiles while maintaining UV protection on skin
Solution Approach 2:
The patent changes the solubility parameter of the sunscreen filter by forming complexes with metal ions. The filter molecules transition from being non-water-soluble to forming water-soluble complexes through coordination chemistry, enabling easy washability without sacrificing UV protection efficacy
2Ease of operation
If conventional detergents are used to remove sunscreen stains from textiles, then washing is simplified, but staining is worsened due to interactions with ions in wash water
Solution Approach 1:
The patent converts the harmful effect of washing water ions (which traditionally worsen staining) into a beneficial effect. The same calcium and magnesium ions that were causing poor washability now serve to complex with the filter molecules and facilitate their removal, turning a disadvantage into an advantage
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 combination significantly reduces textile staining and enhances washability, as demonstrated by in vitro studies showing a greater reduction in yellow spot formation and improved stain removal during washing cycles.
Implementation Method 1
a cosmetic preparation containing 2,4-bis-{[4-(2-ethyl-hexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine (INCI: Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine), cellulose gum and at least one additive selected from the group of compounds iminodisuccinate, 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2(1H)-pyridone (piroctone) and diethylenetriaminepenta(methylenephosphonic acid)/DTPMP
Implementation Method 2
which can be more easily washed out of textiles contaminated with the preparation
Data Source
AI summary
Cosmetic preparation containing 2,4-bis-{[4-(2-ethyl-hexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine (INCI: bis-ethylhexyloxyphenol methoxyphenyl triazine) and at least two additives selected from the group of the compounds cellulose gum, iminodisuccinate, 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2(1 H)-pyridone (piroctone) and diethylenetriaminepenta(methylenephosphonic acid) (DTPMP).