Etheramine Mixture Production Using Polyol Initiator Blends
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current processes for producing polyetheramines exclude high melting point raw materials due to high energy consumption and capital investment requirements, limiting the use of materials with unique features like rigid backbones and high functionality.
Innovation Solution
A process involving mixing a high melting point polyol initiator with a low melting point polyol initiator, followed by alkoxylation with an alkylene oxide in the presence of an alkali metal hydroxide catalyst, and subsequent reductive amination to form an etheramine mixture, which can include high melting point initiators with improved thermal stability and reduced reactivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If high melting point polyol initiators are used in polyetheramine production, then thermal stability and functionality are improved, but energy consumption and processing complexity increase
Solution Approach 1:
A low melting point polyol initiator is used as an intermediary carrier to dissolve and transport the high melting point polyol initiator through the reaction system. The low melting point polyol acts as a solvent medium that allows the high melting point material to be processed at lower temperatures without requiring extensive heating infrastructure or energy input.
Solution Approach 2:
The invention changes the physical state parameters of the reaction mixture by combining solid high melting point polyol with liquid low melting point polyol, creating a homogeneous liquid mixture that can be pumped and processed. This parameter change from solid to liquid state enables lower processing temperatures and reduced energy consumption.
2Stability of the object's composition
If high melting point polyol initiators are used, then glass transition temperature is improved, but capital investment for heat tracing equipment increases
Solution Approach 1:
The low melting point polyol initiator serves as an intermediary that eliminates the need for heat tracing equipment. By dissolving the high melting point polyol in the low melting point carrier, the mixture remains fluid at ambient or mildly elevated temperatures, removing the requirement for complex heating and insulation infrastructure.
Solution Approach 2:
The invention changes the melting point parameter of the initiator mixture by combining high melting point polyol with low melting point polyol. This creates a eutectic-like mixture with reduced melting point that can be processed without heat tracing equipment, while still achieving the desired glass transition temperature in the final product.
3Ease of manufacture
If high melting point raw materials are excluded from production, then processing simplicity is maintained, but product functionality and rigidity are limited
Solution Approach 1:
The low melting point polyol initiator acts as an intermediary that enables the incorporation of high melting point raw materials into the production process. This intermediary carrier maintains processing simplicity by allowing the high melting point materials to be introduced as solids or viscous liquids that dissolve readily, avoiding complex processing while enabling access to materials with superior functionality, rigidity, and thermal properties.
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 process enables the production of etheramine mixtures with enhanced thermal stability, slower amine reactivity, and improved glass transition temperatures, suitable for curing epoxy composite binders and other industrial applications, such as wind turbine generator blades, with reduced energy costs and processing complexity.
Implementation Method 1
contacting the polyol initiator mixture with an alkylene oxide in the presence of an alkali metal hydroxide catalyst to provide a mixture of alkoxylated precursor polyols
Implementation Method 2
charging the mixture of alkoxylated precursor polyols to a reductive amination zone and reductively aminating the mixture of alkoxylated precursor polyols in the presence of a reductive amination catalyst and ammonia to form the etheramine mixture
Data Source
AI summary
Implementations described herein generally relate to etheramine mixtures formed from a mixture of two or more multifunctional alcohol initiators, processes for the etheramine mixtures production, and its use as a curing agent or as a raw material in the synthesis of polymers. In one implementation, the process comprises mixing a polyol initiator having a melting point greater than a processing temperature and a polyol initiator having a melting point less than the processing temperature to form a polyol initiator mixture having a melting point less than the processing temperature, charging the polyol initiator mixture to an alkoxylation reaction zone, contacting the polyol initiator mixture with an alkylene oxide in the alkoxylation reaction zone to provide a mixture of alkoxylated precursor polyols and charging the mixture of alkoxylated precursor polyols to a reductive amination zone and reductively aminating the mixture of alkoxylated precursor polyols to form the etheramine mixture.