Organopolysulfide Solid-State Synthesis Below 95°C
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Solution Overview
Problem
Current methods for producing organopolysulfides and their salts require high temperatures, solvents, and catalysts, increasing production costs and making the processes less efficient.
Innovation Solution
A method involving the mixing of an organomonosulfide or its salt with elemental sulfur at temperatures not exceeding 95°C, in the absence of a liquid phase, using solid reactants and without solvents or catalysts, to produce organopolysulfides or their salts, utilizing equipment like mortars and pestles or dry blending devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional methods are used to produce organopolysulfides, then the reaction can proceed at higher temperatures with solvents and catalysts, but the production cost increases and process efficiency decreases
Solution Approach 1:
The invention extracts and eliminates the need for solvents and catalysts from the conventional organopolysulfide production process. By removing these auxiliary substances, the process achieves higher efficiency and lower costs without compromising the reaction's ability to proceed effectively at reduced temperatures
Solution Approach 2:
The invention changes the temperature parameter from conventional high temperatures to lower temperatures (below the melting points of reactants). This parameter change, combined with the elimination of solvents and catalysts, creates a more efficient and cost-effective production process while maintaining product quality
2Speed
If high temperatures are used in the production process, then the reaction rate may increase, but energy consumption increases and process complexity increases
Solution Approach 1:
The invention replaces thermal energy input (high temperature heating) with mechanical mixing energy. By using intensive mixing methods to achieve reactant contact and reaction, the process eliminates the need for high temperature energy input while maintaining effective reaction rates
Solution Approach 2:
The invention changes the temperature parameter from high to low (below melting points of reactants), fundamentally altering the energy requirements of the process. This parameter change reduces energy consumption while the reaction remains effective through improved reactant contact via mixing
3Reliability
If solvents and catalysts are used in the production process, then the reaction can proceed more readily, but the number of process steps increases and waste generation increases
Solution Approach 1:
The invention extracts and removes solvents and catalysts from the reaction system. This elimination simplifies the process by removing the need for separate addition, handling, and removal steps for these substances, thereby reducing process complexity while maintaining reaction reliability through direct solid-state reactant interaction
Solution Approach 2:
The reactants themselves serve the function of directly interacting without requiring external facilitators like solvents or catalysts. The solid-state reactants contact and react with each other through mixing, making the system self-sufficient and eliminating the need for additional process steps involving auxiliary substances
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 allows for the efficient production of organopolysulfides and salts at lower temperatures without solvents or catalysts, reducing costs and improving process efficiency, while also potentially producing inorganic polysulfide salts as co-products.
Implementation Method 1
a step of mixing an organomonosulfide or salt thereof and elemental sulfur, wherein the mixing is carried out at a temperature not greater than 95°C and in the absence of any added liquid phase for a time effective to produce the organopolysulfide or salt thereof
Data Source
AI summary
A method of producing an organopolysulfide or salt thereof is provided which includes a step of mixing an organomonosulfide or salt thereof and elemental sulfur, wherein the mixing is carried out at a temperature not greater than 95C and in the absence of any added liquid phase for a time effective to produce the organopolysulfide or salt thereof. The described method makes possible the preparation of organopolysulfides and organopolysulfide salts without the use of solvent or catalyst.