Polyamine Conversion of Thiourethane Resin Waste
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Solution Overview
Problem
The disposal of cut powder and defective formed/processed articles containing thiourethane resin in lens production is inefficient, as they are not effectively utilized, and there is a need for a method to produce polyamine compounds using thiourethane resin as a starting material.
Innovation Solution
A method involving the reaction of thiourethane resin with amine compounds to generate polyurea and polyamine compounds, including steps such as sieving, washing, and temperature-controlled reactions to produce polyamine compounds suitable for use in producing new polyisocyanate compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If cut powder containing thiourethane resin is disposed of conventionally, then material waste occurs, but simple disposal is easy to implement
Solution Approach 1:
The patent applies the discarding and recovering principle by collecting cut powder containing thiourethane resin that would otherwise be discarded and converting it into polyamine compounds through chemical reaction. The process recovers valuable materials from waste streams, transforming disposal into resource regeneration.
Solution Approach 2:
The patent converts the harmful aspect of material waste (cut powder disposal) into a beneficial outcome by using the waste thiourethane resin as a starting material for producing polyamine compounds. The waste stream becomes a valuable feedstock for new chemical production.
2Loss of substance
If defective formed articles containing thiourethane resin are disposed of conventionally, then material waste occurs, but simple disposal is easy to implement
Solution Approach 1:
The patent recovers thiourethane resin from defective formed articles that would otherwise be discarded. By collecting and processing these defective articles, the system transforms waste material into valuable polyamine compounds, preventing loss of substance.
Solution Approach 2:
The patent converts defective formed articles containing thiourethane resin into beneficial polyamine compounds. The defective articles, which represent material loss, become feedstock for new chemical production, turning a harmful waste stream into a valuable resource.
3Productivity
If polyamine compound production uses conventional raw materials, then production process is simple, but material efficiency is low
Solution Approach 1:
The patent applies universality by making thiourethane resin serve multiple functions: it is both the end product in lens manufacturing and the starting material for polyamine compound production. This multi-functionality increases material efficiency by eliminating the need for separate raw material inputs.
Solution Approach 2:
The patent changes the chemical parameters of the thiourethane resin through controlled reaction conditions (temperature, catalysts, solvents) to transform it into polyamine compounds. By adjusting reaction parameters, the system efficiently converts one chemical form into another with high material utilization.
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
This method enables the effective utilization of thiourethane resin waste by converting it into valuable polyamine compounds, which can be used to produce new thiourethane resins, thereby reducing waste and enhancing material efficiency.
Implementation Method 1
a first step of generating a polyurea compound by reacting a thiourethane resin and an amine compound A with each other; and a second step of generating a polyamine compound by reacting the polyurea compound and an amine compound B with each other
Data Source
AI summary
A method of producing a polyamine compound, the method including: a first step of generating a polyurea compound by reacting a thiourethane resin and an amine compound A with each other; and a second step of generating a polyamine compound by reacting the polyurea compound and an amine compound B with each other.