Polysaccharide Sunscreen Composition for Reduced Textile Staining
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Solution Overview
Problem
Cosmetic preparations containing non-water-soluble UV filters, such as 4-(tert-butyl)-4'-methoxydibenzoylmethane and bis-ethylhexyloxyphenol methoxyphenyl triazines, cause stubborn stains and discoloration on textiles, which are difficult to remove with conventional detergents and worsen during washing due to interactions with ions.
Innovation Solution
Incorporating polysaccharides like Welan Gum, Sclerotium Gum, and Cellulose Gum into cosmetic preparations to reduce textile contamination and facilitate the washout of UV filters, with preferred concentrations of 0.01 to 2% by weight, enhancing the washability of UV filters like 4-(tert-butyl)-4'-methoxydibenzoylmethane and bis-ethylhexyloxyphenol methoxyphenyl triazines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-water-soluble UV filters are used in cosmetic preparations, then sun protection effectiveness is improved, but textile staining and discoloration worsen
Solution Approach 1:
The patent introduces polysaccharides (xanthan gum, guar gum, carboxymethyl cellulose, or carbomer) as intermediary substances that interact with non-water-soluble UV filters to modify their behavior on textiles. These polysaccharides form complexes with the UV filters, changing their solubility characteristics and interaction with textile fibers, thereby reducing staining while maintaining sun protection effectiveness.
Solution Approach 2:
The patent changes the chemical and physical parameters of the UV filter system by adding polysaccharides. This alters the solubility, adhesion, and interaction properties of the UV filters with textile materials, transforming them from staining agents into washable formulations while preserving their UV filtering capabilities.
2Ease of operation
If conventional detergents are used to remove UV filter stains, then washing process is simple, but stain removal effectiveness worsens
Solution Approach 1:
The polysaccharides act as intermediaries that pre-modify the UV filter deposition on textiles, creating a formulation that is inherently more responsive to conventional washing. The polysaccharide-UV filter complex has different adhesion properties than pure UV filters, making it susceptible to removal by standard detergent mechanisms without requiring specialized washing processes.
3Reliability
If high concentration of UV filters is used to increase sun protection factor, then sun protection effectiveness is improved, but textile staining worsens
Solution Approach 1:
The polysaccharides serve as mediators that allow higher concentrations of UV filters to be used without proportionally increasing staining. The polysaccharide-UV filter interaction modifies the deposition and adhesion behavior, enabling high SPF formulations to maintain reduced staining characteristics through the protective intermediary effect.
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 use of polysaccharides significantly reduces textile staining and improves the washability of UV filters, making it easier to remove stains caused by cosmetic preparations, as demonstrated by in vitro studies showing reduced yellow spot formation and improved colorimetric measurements after washing.
Implementation Method 1
the use of polysaccharides from the group of gums in cosmetic preparations containing UV filters, to reduce the contamination and/or discoloration of textiles caused by the UV filters
Implementation Method 2
to make it easier to wash out the contamination and/or discoloration of textiles caused by the UV filters in the preparation
Data Source
AI summary
The invention relates to the use of polysaccharides in UV filter-containing cosmetic preparations, for reducing the staining and/or discoloration caused by said UV filters in textiles, and to methods which allow the staining and/or discoloration caused by said UV filters in textiles to be washed out more easily.