Hydroxyurethane Golf Ball Coatings With Low Moisture Sensitivity
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Solution Overview
Problem
Conventional polyurethane and polyurea coatings for golf balls are moisture-sensitive, leading to issues like down glossing, foaming, and pin holing due to the reactivity of isocyanate-containing components with atmospheric moisture, necessitating careful isolation from water to avoid irreversible reactions.
Innovation Solution
The development of coating compositions formed from a reaction between cyclic carbonate and an amine-terminated component, which includes hydroxyurethane linkages, reducing moisture sensitivity and eliminating the need for moisture isolation, while maintaining desirable performance attributes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If isocyanate-containing components are used in conventional polyurethane and polyurea coatings, then desirable performance attributes are achieved, but moisture sensitivity increases causing down glossing, foaming, and pin holing
Solution Approach 1:
The patent changes the chemical parameters of the coating composition by replacing isocyanate-based chemistry with cyclic carbonate and amine-terminated component chemistry. This fundamental parameter change eliminates the moisture reactivity that causes down glossing, foaming, and pin holing while preserving the desirable performance attributes of the coating.
Solution Approach 2:
The patent extracts and removes the isocyanate-containing component from the coating formulation, eliminating the source of moisture sensitivity. By taking out the problematic isocyanate component and replacing it with alternative reactive components (cyclic carbonate and amine-terminated component), the patent eliminates the harmful moisture reaction while maintaining coating functionality.
2Manufacturing precision
If isocyanate-containing components are isolated from water to prevent irreversible reactions, then coating quality is maintained, but processing complexity increases
Solution Approach 1:
The patent extracts and removes the isocyanate component that requires careful isolation from water, thereby eliminating the need for complex moisture exclusion procedures. The new formulation using cyclic carbonate and amine-terminated component does not require such isolation, simplifying processing while maintaining coating quality.
Solution Approach 2:
By changing the chemical parameters from isocyanate-based to cyclic carbonate and amine-terminated component-based systems, the patent fundamentally alters the moisture sensitivity profile. This parameter change eliminates the need for strict water isolation during processing, thereby reducing processing complexity while maintaining manufacturing precision.
3Ease of manufacture
If conventional polyurethane and polyurea compositions are used, then coating formation is achieved, but irreversible reactions with water occur forming urea and CO2
Solution Approach 1:
The patent extracts and removes the isocyanate component that undergoes irreversible reactions with water to form urea and CO2. By replacing isocyanate with cyclic carbonate and amine-terminated component, the patent eliminates this harmful irreversible reaction while maintaining the ability to form quality coatings.
Solution Approach 2:
The patent converts the potentially harmful moisture reaction characteristic of isocyanate-based systems into a beneficial feature by using cyclic carbonate and amine-terminated component chemistry. The new system maintains coating formation capability while eliminating the harmful irreversible reaction, effectively converting a harmful characteristic into a beneficial stable system.
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 new coating compositions exhibit decreased moisture sensitivity, resulting in a smooth, imperfection-free coating layer with improved hydrolytic and thermal stability, and enhanced adhesion, without the formation of pinholes or flaws.
Implementation Method 1
the coating compositions of the present disclosure include hydroxyurethane linkages that are the result of the reaction of cyclic carbonate and at least one carboxyl-reactive component
Data Source
AI summary
Coating compositions including hydroxyurethane linkages, coating layers formed from such coating compositions, and golf balls including such coating layers.