PHA Biodegradable Cosmetic Particles for UV Blocking Without Microplastics
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Solution Overview
Problem
The cosmetics industry faces environmental pollution due to microplastics and the harmful effects of banned ingredients in sunscreens, necessitating the development of biodegradable and safe cosmetic compositions.
Innovation Solution
A cosmetic composition using biodegradable polymer particles comprising copolymeric polyhydroxyalkanoate (PHA) with controlled particle diameter, combined with UV blocking agents and other ingredients, to provide effective UV protection and environmental friendliness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional plastic particles (microplastics) are used in cosmetics, then exfoliation and cleansing effects are improved, but environmental pollution increases
Solution Approach 1:
The patent changes the material parameter from conventional plastic to PHA biodegradable polymer, and controls particle size parameter within 5-50 μm range, maintaining cleansing effectiveness while eliminating environmental pollution
Solution Approach 2:
The patent uses copolymeric PHA resin comprising multiple hydroxy acid units (3-HB, 4-HB, 3-HV, etc.) in specific proportions to create a composite biodegradable material that combines environmental safety with functional performance
2Reliability
If harmful UV filters (octinoxate, oxybenzone) are used in sunscreens, then UV protection is improved, but marine ecosystem damage increases
Solution Approach 1:
The patent extracts and removes harmful chemical UV filters from the formulation, replacing them with physical UV blockers (titanium oxide, zinc oxide) and biodegradable PHA particles that provide UV protection without coral reef damage
Solution Approach 2:
The patent introduces PHA particles and metal oxide UV filters as intermediary substances that block UV radiation physically without the harmful chemical effects of conventional filters on marine ecosystems
3Object-generated harmful factors
If biodegradable PHA particles are used instead of microplastics, then environmental friendliness is improved, but particle size control complexity increases
Solution Approach 1:
The patent specifies precise particle size parameters (5-50 μm average diameter) and compositional parameters (mole ratios of hydroxy acid units) to optimize both environmental degradation and functional performance
Solution Approach 2:
The patent creates a dynamic balance between particle size for exfoliation effectiveness and small enough size for biodegradability, using copolymer composition to调节 mechanical properties and degradation rate
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 offers excellent UV blocking capability, sensory properties, and biodegradability, reducing environmental impact while maintaining formulation stability and safety.
Implementation Method 1
UV blocking capability
Data Source
AI summary
The present application relates to a cosmetic composition comprising a biodegradable polymer resin containing a PHA resin and having a particle diameter adjusted to a specific range. The cosmetic composition of the present application can be used in the manufacture of various products, such as basic cosmetics, color cosmetics, sunscreen cosmetics, and hair care cosmetics.