Encapsulated Benefit Agent Purification Without Formaldehyde Scavengers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Encapsulated benefit agents in personal care and fabric care compositions often require scavenger materials to manage residual by-products like formaldehyde, increasing formulation complexity and compatibility issues with raw materials.
Innovation Solution
Developing encapsulated benefit agent delivery compositions with reduced or no scavenger materials, using processes like centrifugation, filtration, and solvent exchange to minimize shell particles and manage by-product levels, thereby maintaining lower formaldehyde levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If scavenger materials are introduced into the slurry to manage residual formaldehyde, then formaldehyde levels are controlled, but formulation complexity increases and compatibility issues with raw materials arise
Solution Approach 1:
The patent extracts and removes shell particles containing residual formaldehyde from the encapsulated benefit agent composition through filtration and centrifugation processes. This eliminates the need for scavenger materials by physically removing the source of formaldehyde residues, thereby reducing formulation complexity while maintaining formaldehyde control
Solution Approach 2:
The patent uses filtration and centrifugation as intermediary processes to separate and remove shell particles from the composition. These intermediary steps act as a mediator between the encapsulation process and the final product, eliminating formaldehyde-containing by-products without requiring chemical scavengers that would increase formulation complexity
2Object-affected harmful factors
If scavenger materials are introduced into the slurry to manage residual formaldehyde, then formaldehyde levels are controlled, but compatibility issues with raw materials occur
Solution Approach 1:
By extracting and removing shell particles that contain residual formaldehyde through physical separation processes, the patent eliminates the need for scavenger materials. This approach maintains raw material compatibility while effectively controlling formaldehyde levels, as no scavenger materials are introduced that could conflict with other formulation components
3Productivity
If encapsulation processes are used to improve benefit agent delivery efficiency, then delivery efficiency is improved, but residual formaldehyde and shell particles are generated
Solution Approach 1:
The patent converts the harmful by-products of encapsulation (shell particles containing formaldehyde) into removable waste materials. Through filtration and centrifugation, these previously harmful by-products are systematically removed, allowing the encapsulation process to maintain its benefit agent delivery efficiency improvements while eliminating the associated formaldehyde residues
Solution Approach 2:
The patent discards shell particles containing residual formaldehyde through filtration and centrifugation processes. By separating and removing these harmful by-products from the beneficial encapsulated benefit agents, the process recovers the high-value encapsulated product while discarding the formaldehyde-containing waste, thereby improving delivery efficiency without the formaldehyde penalty
4Productivity
If encapsulation processes are used to improve benefit agent delivery efficiency, then delivery efficiency is improved, but formulation complexity increases due to scavenger requirements
Solution Approach 1:
The patent extracts and removes shell particles from the encapsulated benefit agent composition through filtration and centrifugation. This extraction eliminates the need for scavenger materials, thereby maintaining the improved benefit agent delivery efficiency while reducing formulation complexity by removing the scavenger requirement
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 approach results in compositions with enhanced benefit agent delivery efficiency and reduced formaldehyde residues, simplifying formulation and improving compatibility with consumer products.
Implementation Method 1
The continuous centrifuge receives a slurry of encapsulated benefit agents and shell particles and separates the shell particles from the encapsulated benefit agents
Implementation Method 2
The filtration process removes residual shell particles and by-products from the slurry, reducing formaldehyde levels to less than 100 ppm
Implementation Method 3
solvent exchange to minimize shell particles and manage by-product levels, thereby maintaining lower formaldehyde levels
Data Source
AI summary
The present application relates to encapsulated benefit agents, compositions comprising such encapsulated benefit agents and processes for making and using compositions comprising such encapsulated benefit agents that do not require or require a reduced amount of scavenger materials. Such encapsulated benefit agents, compositions comprising such encapsulated benefit agents are processed such that no or lower levels of scavenger materials are required.