Polysuccinimide-Coated Microcapsules for Perfume Deposition Stability
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Solution Overview
Problem
The perfumery industry faces challenges with the rapid loss of olfactive benefit due to volatility of odoriferous compounds, stability issues in aggressive mediums like surfactant-based products, and poor deposition and dispersion of perfume delivery systems on substrates.
Innovation Solution
Microcapsules coated with a polysuccinimide derivative are used to improve deposition on substrates and enhance perfume release and stability, featuring a core-shell structure with an oil-based core, polymeric shell, and a coating comprising a polysuccinimide derivative.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional delivery systems are used, then perfume encapsulation is achieved, but deposition on substrate is poor
Solution Approach 1:
The invention applies composite materials by combining a polymeric shell with a polysuccinimide derivative coating to create a multi-layered microcapsule structure. The core contains hydrophobic material, the shell provides structural integrity, and the polysuccinimide coating enhances deposition on substrates through improved adhesion properties, thus resolving the contradiction between deposition reliability and structural complexity.
Solution Approach 2:
The invention applies local quality by modifying only the outer surface of the microcapsules with a polysuccinimide derivative coating while maintaining the internal core-shell structure unchanged. This localized modification improves substrate deposition without requiring complete restructuring of the entire delivery system, thereby balancing deposition enhancement with structural simplicity.
2Reliability
If multiple treatment steps are applied to improve deposition, then substrate adherence increases, but process time increases
Solution Approach 1:
The invention applies preliminary action by incorporating the polysuccinimide derivative into the microcapsule structure during the wall formation process itself, rather than requiring separate post-treatment steps. This preliminary incorporation of the coating material ensures substrate adherence is built-in from the start, eliminating the need for subsequent treatment steps and reducing overall process time.
Solution Approach 2:
The invention merges the coating application with the microcapsule formation process by adding the polysuccinimide derivative during wall formation. This consolidation of steps combines capsule synthesis and coating application into a single integrated process, thereby improving substrate adherence while minimizing process time and operational complexity.
3Stability of the object's composition
If cationic polymers are used to improve dispersion, then capsule dispersion increases, but manufacturing complexity increases
Solution Approach 1:
The invention applies parameter changes by modifying the surface charge characteristics of the microcapsules through polysuccinimide derivative coating. This coating alters the electrostatic properties and surface chemistry of the capsules, improving dispersion stability in aqueous media without requiring complex cationic polymer formulations or multiple polymer components.
Solution Approach 2:
The invention uses composite materials by integrating the polysuccinimide derivative as a functional coating layer on the microcapsule surface. This single-layer composite structure provides both structural integrity and improved dispersion properties, avoiding the need for complex multi-polymer compositions or layered composite structures.
4Reliability
If purification steps are performed before cationic treatment, then capsule purity increases, but processing time increases
Solution Approach 1:
The invention applies preliminary action by incorporating the polysuccinimide derivative during the wall formation process itself, which inherently purifies the capsule structure as it forms. This preliminary formation process with integrated coating eliminates the need for separate purification steps before cationic treatment, maintaining capsule purity while reducing processing time.
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 polysuccinimide-coated microcapsules provide improved deposition and stability, ensuring controlled perfume release and adherence to surfaces, addressing the limitations of existing delivery systems.
Implementation Method 1
improve deposition on substrates and enhance perfume release and stability, featuring a core-shell structure with an oil-based core, polymeric shell, and a coating comprising a polysuccinimide derivative
Data Source
AI summary
The present invention relates to the field of delivery systems. More specifically, the invention concerns microcapsules coated with a polysuccinimide derivative and can be used in several industries, in particular in the perfumery industry. Perfuming compositions and perfumed consumer products comprising these microcapsules are also objects of the invention.