Episulfide Synthesis via Polyhydric Hydroxyl Mediators
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for producing episulfide compounds face challenges such as low yield, long reaction times, high production costs, and environmental concerns due to the use of expensive and hard-to-find catalysts or thiating agents, as well as inefficiencies in existing solvent systems.
Innovation Solution
A method involving the reaction of epoxy groups with a thiating agent in the presence of a polyhydric hydroxyl compound with specific hydroxyl value and carbon atom ranges, which shortens reaction time, increases yield, and reduces environmental impact while maintaining economic efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional thiating agents or metal catalysts are used, then the reaction can proceed, but the production cost increases and environmental load increases
Solution Approach 1:
The patent replaces expensive and environmentally problematic metal catalysts with inexpensive, readily available polyhydric hydroxyl compounds that can be easily disposed of or regenerated, eliminating the need for costly precious metal catalysts and their associated disposal costs
Solution Approach 2:
The patent changes the chemical parameters of the reaction system by using polyhydric hydroxyl compounds with specific hydroxyl values (300-3000 mg/g) and specific carbon atom ranges (3-20), optimizing the reaction conditions to achieve high yields without requiring expensive catalysts
2Productivity
If conventional methods are used, then episulfide compounds can be produced, but the reaction time is long and productivity is low
Solution Approach 1:
The patent optimizes reaction parameters by controlling the hydroxyl value (300-3000 mg/g) and carbon atom count (3-20) of the polyhydric hydroxyl compound, which accelerates the thiating reaction rate while maintaining high yields through precise parameter control
Solution Approach 2:
The polyhydric hydroxyl compound acts as a mediator that facilitates the reaction between epoxy compounds and thiating agents, enabling faster reaction rates without requiring expensive metal catalysts, thus improving productivity while maintaining ease of manufacture
3Productivity
If expensive specialized catalysts are used, then reaction efficiency may improve, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent replaces complex, expensive, specialized catalysts with simple, inexpensive polyhydric hydroxyl compounds that are readily available and require no special handling or disposal procedures, reducing manufacturing complexity while maintaining reaction efficiency
Solution Approach 2:
The polyhydric hydroxyl compounds naturally facilitate the thiating reaction through their inherent chemical properties without requiring additional activation or complex preparation steps, making the process simpler and more straightforward to manufacture
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 achieves a high yield of episulfide compounds in a shorter reaction time with improved economic efficiency and reduced environmental load, using readily available and cost-effective polyhydric hydroxyl compounds and thiating agents like thiocyanates and thioureas.
Implementation Method 1
a method for producing an episulfide compound, which includes a process of thiating epoxy groups of (B) an epoxy compound through a reaction with (C) a thiating agent in the presence of (A) a polyhydric hydroxyl compound
Data Source
AI summary
Provided is a method for producing an episulfide compound, the method including a step of thiating epoxy groups of (B) an epoxy compound by a reaction with (C) a thiating agent in the presence of (A) a polyhydric hydroxyl compound having two or more hydroxyl groups.