Phosphorus-Containing Polyol Coating for Flame Resistance
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Solution Overview
Problem
Current coating compositions lack effective flame and heat resistance, particularly in applications requiring protection against environmental exposures and ballistic mitigation, and often compromise on adhesion and durability.
Innovation Solution
A coating composition comprising a reaction mixture of an isocyanate functional prepolymer formed with a phosphorus-containing polyol and an amine, which reacts to form polyurea or polyurea/polyurethane, offering enhanced flame and heat resistance, improved adhesion, and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional coating compositions are used, then general coating properties are achieved, but flame and heat resistance are insufficient
Solution Approach 1:
The patent introduces phosphorus-containing polyols as a chemical additive that fundamentally changes the thermal properties of the coating composition. This chemical parameter change enables the coating to achieve superior flame and heat resistance while maintaining adhesion and durability, directly resolving the contradiction between temperature resistance and protection effectiveness.
Solution Approach 2:
The patent creates a composite coating system by combining isocyanate functional prepolymer with phosphorus-containing polyol and amine components. This composite material approach integrates multiple functional properties including flame resistance, adhesion, and durability into a single coating system, eliminating the need to sacrifice protection effectiveness for temperature resistance.
2Temperature
If coating compositions prioritize flame resistance, then temperature protection improves, but adhesion to substrates deteriorates
Solution Approach 1:
The patent uses phosphorus-containing polyols to modify the chemical parameters of the coating, achieving a balance where both flame resistance and adhesion are enhanced. The specific chemical structure and reactivity of the phosphorus-containing polyol allow it to improve thermal properties while maintaining substrate bonding capability, resolving the contradiction between temperature protection and adhesion strength.
Solution Approach 2:
The phosphorus-containing polyol acts as an intermediary component that mediates between the isocyanate functional prepolymer and the substrate. It provides both flame resistance properties and adhesion promotion, serving as a chemical bridge that reconciles the conflicting requirements of temperature protection and substrate bonding.
3Temperature
If coating compositions prioritize flame resistance, then temperature protection improves, but durability deteriorates
Solution Approach 1:
The patent develops a composite polyurea/polyurethane coating system that integrates multiple functional components. The combination of isocyanate functional prepolymer, phosphorus-containing polyol, and amine creates a synergistic material that simultaneously achieves heat resistance and long-term durability, eliminating the trade-off between temperature protection and service life.
Solution Approach 2:
The introduction of phosphorus-containing polyols fundamentally changes the chemical and physical parameters of the coating matrix, creating a more stable and durable structure that resists both thermal degradation and environmental aging. This parameter change enables the coating to maintain both heat resistance and durability over extended periods.
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 demonstrates superior flame and heat resistance, improved adhesion to substrates, and enhanced durability, making it suitable for various industrial and military applications.
Implementation Method 1
a coating composition comprising polyurea formed from a reaction mixture comprising: (a) a first component comprising isocyanate, wherein said isocyanate comprises an isocyanate functional prepolymer formed from a reaction mixture comprising isocyanate and a material comprising a phosphorus-containing polyol; and (b) a second component comprising an amine
Data Source
AI summary
The present invention is directed to a coating composition comprising polyurea formed from a reaction mixture comprising: (a) a first component comprising isocyanate, wherein said isocyanate comprises an isocyanate functional prepolymer formed from a reaction mixture comprising isocyanate and a material comprising a phosphorus-containing polyol; and (b) a second component comprising an amine.