Depolymerized Polymer Encapsulation for Uniform Modifier Dispersion
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Solution Overview
Problem
Existing methods for encapsulating modifiers in formulations, such as asphalt, are inefficient, costly, and pose safety and environmental hazards due to the use of traditional encapsulation methods and powder forms, leading to complex mixing, high equipment costs, and health risks.
Innovation Solution
Encapsulating modifiers within a depolymerized product, such as polyethylene or polystyrene, to create encapsulated-modifier granules that can be uniformly dispersed in formulations, reducing the need for separate addition and handling of modifiers, and using a depolymerization process like catalytic, thermal, or radiation-based methods to create a compatible shell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional encapsulation methods using asphalt or plastic as shell are used, then modifiers can be contained and protected, but the material is difficult to blend and form into solid stable products for bulk storage
Solution Approach 1:
The patent changes the physical state parameter of the shell material from traditional solid asphalt or plastic to a liquid carrier oil that solidifies upon cooling. This parameter change enables the shell to flow and blend easily during manufacturing, then form stable solid encapsulated products for storage without requiring complex blending equipment
Solution Approach 2:
The patent creates a composite encapsulated modifier consisting of three components: the modifier core, the liquid carrier oil shell, and optional solidifying agents. This composite structure combines the benefits of easy handling of liquid modifiers with the stability of solid products, resolving the contradiction between manufacturability and storage stability
2Manufacturing precision
If modifiers are added independently one after the other into formulation, then each modifier can be controlled, but the cost and time required to manufacture the desired formulation increases
Solution Approach 1:
The patent merges multiple modifiers into a single encapsulated granule product where multiple modifier types are dispersed within the liquid carrier oil shell. This allows all modifiers to be added to the formulation simultaneously in one step rather than sequentially, maintaining precise concentration control while dramatically reducing manufacturing time and process complexity
3Quantity of substance
If powder form modifiers are used, then they can be stored, but they are flammable and cause respiratory issues requiring expensive safety equipment
Solution Approach 1:
The patent introduces a liquid carrier oil as an intermediary substance that encapsulates the modifier particles. This intermediary transforms hazardous powder modifiers into safe liquid-filled capsules that can be stored and handled without fire hazards or respiratory risks, while still maintaining the functional concentration of modifiers when dispersed in the formulation
4Manufacturing precision
If high-shear mixers and robust fire prevention systems are used, then uniform mixing and safety are achieved, but manufacturing costs increase
Solution Approach 1:
The patent performs preliminary action by pre-encapsulating modifiers in liquid carrier oils before addition to the formulation. This pre-preparation ensures uniform distribution is achieved simply by melting and mixing the encapsulated granules, eliminating the need for expensive high-shear mixing equipment while maintaining excellent dispersion uniformity
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 encapsulated modifiers provide uniform dispersion, improved formulation stability, reduced environmental impact, and safer handling, with benefits including lower viscosity, enhanced performance, and reduced manufacturing costs.
Implementation Method 1
a shell made of a depolymerized product
Implementation Method 2
the encapsulated modifiers can be dispersed uniformly, or at least near uniformly, in the formulations
Data Source
AI summary
A method of encapsulating modifiers in a depolymerized product is disclosed. In some embodiments the material undergoing depolymerization is one of polypropylene, polystyrene, and/or polyethylene. In some embodiments, the material is composed, at least partially, of recycled material. In some embodiments, the encapsulated modifiers are added to a formulation such as an asphalt, plastic lumber, plastic wood composite, a plastic formulation, a rubber formulation, an ink formulation, a coating formulation, and/or an adhesive formulation.