Self-Emulsifying Polyisocyanate Composition via Anionic Hydrophilizing Agent
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Solution Overview
Problem
Existing polyisocyanate compositions require strong shearing forces for uniform dispersion in water, leading to low degree of water dispersion and instability of the coating material.
Innovation Solution
A self-emulsifying polyisocyanate composition is developed using a specific anionic compound, an organic polyisocyanate, and an amine compound, which improves the degree of water dispersion and stability without requiring strong shearing forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If strong shearing force by high-speed stirring is applied to disperse polyisocyanate in water, then the degree of water dispersion is improved, but the device complexity and energy consumption increase
Solution Approach 1:
The patent changes the chemical parameters of the polyisocyanate by introducing specific hydrophilic groups (sulfonic acid groups, carboxylic acid groups, or hydroxyl groups) in predetermined amounts. This chemical modification enables the polyisocyanate to self-emulsify in water without requiring strong mechanical shearing forces, thereby resolving the contradiction between achieving high water dispersion and reducing energy consumption
Solution Approach 2:
The patent creates a self-emulsifying polyisocyanate composition that automatically disperses in water through its inherent hydrophilic properties. The composition contains hydrophilic groups that enable spontaneous emulsification without external high-speed stirring, allowing the system to serve itself in achieving uniform water dispersion while minimizing energy input
2Manufacturing precision
If strong shearing force by high-speed stirring is applied to disperse polyisocyanate in water, then the degree of water dispersion is improved, but the device complexity increases
Solution Approach 1:
The patent modifies the chemical composition parameters of the polyisocyanate by incorporating hydrophilic groups (sulfonic acid, carboxylic acid, or hydroxyl groups) at specific concentrations. This chemical parameter change enables the material to self-disperse in water without complex high-speed stirring devices, thereby resolving the contradiction between achieving high water dispersion and simplifying device complexity
Solution Approach 2:
The self-emulsifying polyisocyanate composition possesses inherent hydrophilic properties that enable automatic dispersion in water. The composition serves itself by utilizing the hydrophilic groups to create stable emulsions without requiring complex mechanical dispersion equipment, thus resolving the contradiction between dispersion quality and device simplicity
3Device complexity
If conventional polyisocyanate composition is used, then the formulation is simple, but the stability of water dispersion is insufficient causing sedimentation
Solution Approach 1:
The patent creates a composite polyisocyanate composition that combines hydrophobic polyisocyanate with hydrophilic components (sulfonic acid groups, carboxylic acid groups, or hydroxyl groups). This composite structure enables the material to form stable emulsions in water while maintaining the core polyisocyanate functionality, resolving the contradiction between formulation simplicity and dispersion stability
Solution Approach 2:
The patent changes the compositional parameters by incorporating specific hydrophilic groups at controlled amounts (sulfonic acid groups: 0.01-5 mmol/g, carboxylic acid groups: 0.01-5 mmol/g, hydroxyl groups: 0.1-10 mmol/g). These parameter changes enhance water dispersion stability and prevent sedimentation while maintaining relative formulation simplicity
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 composition achieves excellent degree of water dispersion and stability, resulting in a coating film with improved gloss and hardness.
Implementation Method 1
a self-emulsifying polyisocyanate composition, capable of improving the degree of water dispersion and the stability of water dispersion
Implementation Method 2
a hydrophilizing agent for producing a self-emulsifying polyisocyanate composition
Data Source
AI summary
The present invention relates to a hydrophilizing agent for producing a self-emulsifying polyisocyanate composition, the hydrophilizing agent comprising an anionic compound represented by the following formula (1): wherein X represents a sulfo group or a hydroxysulfonyloxy group, R1 represents a straight-chain or branched alkylene group, and R2 represents a straight-chain or branched alkyl group; the total number of carbon atoms included in R1 and R2 is 6 or more and less than 14, and one or two or more carbon atoms in the groups R1 and R2 are optionally replaced with an oxygen atom(s).