One-Pot Dry Erase Paint Diisocyanate Coating
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Solution Overview
Problem
Current dry erase paint products are limited, with few options available, and existing two-part epoxy-based coatings have short pot life, require special curing, are primarily indoor use, and are not easily applicable without priming or sanding.
Innovation Solution
A one-pot dry erase paint composition comprising a base component of monomers, oligomers, or polymers of diisocyanate mixed with a solvent-based admix component, which can be stored for extended periods and applied directly to substrates without special curing, offering improved shelf-life and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-part epoxy-based coatings are used, then the paint provides good adhesion and durability, but the pot life is limited and requires combining components immediately
Solution Approach 1:
The patent divides the coating system into two separate components: a base component containing monomers/oligomers/polymers of diisocyanate and an admix component containing solvent and catalyst. These components remain stable separately but react when mixed, providing both long shelf-life and reliable performance.
Solution Approach 2:
The base component is pre-formulated with diisocyanate monomers/oligomers/polymers that remain stable until mixed. The catalyst is pre-separate in the admix component. This preliminary separation allows extended storage while maintaining reactivity potential.
2Reliability
If two-part epoxy-based coatings are used, then the paint provides good performance, but the cure time is extended (48-168 hours)
Solution Approach 1:
The patent changes the chemical parameters by using diisocyanate-based monomers/oligomers/polymers that react more rapidly with the catalyst compared to traditional epoxy systems. This parameter change reduces cure time while maintaining performance.
Solution Approach 2:
The patent replaces the slow chemical curing mechanism of epoxy-based systems with a faster-reacting diisocyanate-catalyzed system, substituting the mechanical mixing process with a more efficient chemical reaction pathway.
3Strength
If epoxy-based coatings are used, then the paint provides durable coverage, but it requires sanding and primer before application
Solution Approach 1:
The base component contains self-leveling and self-adhering properties through its diisocyanate-based formulation. The coating automatically prepares itself by bonding to various substrates without requiring external priming or sanding operations.
Solution Approach 2:
The coating formulation provides multiple functions in a single application: adhesion, leveling, and durability. This multi-functionality eliminates the need for separate priming and sanding steps while maintaining strong performance.
4Ease of operation
If existing dry erase paints are used, then the surface is markable-erasable, but the products are limited and primarily for indoor use
Solution Approach 1:
The patent modifies the chemical composition parameters by incorporating UV-stable diisocyanate-based polymers and appropriate pigments that provide both markable-erasable properties and outdoor durability. This parameter change enables the coating to function in both indoor and outdoor environments.
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 solution provides a ready-to-use, markable-erasable surface with extended shelf-life, suitable for both indoor and outdoor use, and allows for application without priming or sanding, with the paint being abrasion, chemical, and UV-resistant, and capable of removing various types of markings without solvents.
Implementation Method 1
The base component comprises monomers, oligomers, and/or polymers of diisocyanate
Implementation Method 2
forming a coating of the paint mixture adjacent the substrate surface, and allowing the coating to dry under ambient conditions
Implementation Method 3
The admix component comprises a solvent... allowing the coating to dry under ambient conditions
Data Source
AI summary
One-pot, dry erasable paints are provided. The dry erasable paints can be used to prepare dry erase coatings on virtually any type of substrate surface. The paints comprise a base component comprising monomers, oligomers, and/or polymers of a diisocyanate mixed with an admix component comprising a solvent. The paints are cured in a time of less than about 12 hours under ambient conditions, and once cured are markable-erasable with numerous writing and marking instruments, including temporary and permanent markers, paint, crayons, ink, and the like.