Encapsulated Benefit Agent Particles for Controlled Release Delivery
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Solution Overview
Problem
Benefit agents in consumer products, such as perfumes and silicones, are often expensive and less effective due to difficulties in improving their delivery efficiencies, which can be hindered by physical or chemical characteristics and incompatibility with other components or the treatment site.
Innovation Solution
Development of benefit agent containing delivery particles comprising a core material surrounded by a wall material, with specific physical and chemical characteristics such as fracture strength, particle size, and benefit agent leakage, to enhance delivery efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If benefit agents are used at high levels in consumer products, then the effectiveness of benefit agents is improved, but the cost of the product increases and the agents may be lost due to physical or chemical characteristics
Solution Approach 1:
The benefit agent is segmented into discrete delivery particles, each containing a controlled amount of the active ingredient. This segmentation allows for precise delivery and reduces loss by ensuring that the benefit agent is released in controlled portions rather than being lost to degradation or incompatibility in the bulk formulation.
Solution Approach 2:
The delivery particle acts as an intermediary between the benefit agent and the consumer product formulation. The wall material of the delivery particle protects the core benefit agent from physical or chemical degradation and incompatibility with other formulation components, while still allowing controlled delivery of the active ingredient to the substrate.
2Reliability
If benefit agents are used at high levels in consumer products, then the effectiveness of benefit agents is improved, but the cost of the product increases
Solution Approach 1:
The invention changes the physical parameters of the benefit agent by encapsulating it in delivery particles with specific fracture strength, particle size, and wall thickness. These parameter changes allow the benefit agent to be used at lower concentrations while maintaining effectiveness, as the controlled delivery mechanism ensures maximum utilization of the active ingredient.
Solution Approach 2:
The invention replaces the traditional approach of simply mixing benefit agents into formulations with a controlled mechanical delivery system. The delivery particles are designed to fracture under specific conditions (such as mechanical agitation or abrasion) to release the benefit agent, providing more efficient and predictable delivery that reduces the total amount of expensive active ingredient needed.
3Productivity
If delivery efficiency of benefit agents is improved, then the effectiveness is maximized, but it is difficult to achieve due to physical or chemical characteristics and incompatibility with other components
Solution Approach 1:
The delivery particle exhibits local quality by having different properties in different regions: the wall material provides protection and controlled release characteristics, while the core contains the benefit agent. This localized functionality allows the system to achieve high delivery efficiency while maintaining compatibility with various formulation components, as the wall material can be selected to be compatible with the specific consumer product matrix.
Data Source
AI summary
The present invention relates to benefit agent containing delivery particles, compositions comprising said particles, and processes for making and using the aforementioned particles and compositions. When employed in compositions, for example, cleaning or fabric care compositions, such particles increase the efficiency of benefit agent delivery, there by allowing reduced amounts of benefit agents to be employed. In addition to allowing the amount of benefit agent to be reduced, such particles allow a broad range of benefit agents to be employed.