Curable Acrylic Coating with Polydialkylsiloxane for Dirt Mitigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing coated surfaces face damage and dirt build-up issues due to chemical reactions with environmental contaminants, leading to cohesive failure during cleaning, which complicates the removal of dirt and can result in incomplete contaminant removal.
Innovation Solution
A curable film-forming composition comprising a film-forming polymer with reactive epoxy functional groups, a curing agent with acid functional groups, and an acrylic polymer component with epoxy and polydialkylsiloxane functional groups is applied to substrates, mitigating dirt build-up by forming a durable coating that allows for easy asphalt release without cohesive failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coating compositions are used, then the coating provides basic protection, but environmental contaminants cause chemical reactions leading to cohesive failure during cleaning
Solution Approach 1:
The patent modifies the chemical composition parameters of the coating by incorporating polydialkylsiloxane functional groups and specific epoxy-acid combinations, changing the surface chemistry to resist contaminant adhesion and prevent cohesive failure during cleaning
Solution Approach 2:
The invention creates a composite coating system combining film-forming polymers with reactive epoxy groups, curing agents with acid functional groups, and acrylic polymer components with polydialkylsiloxane groups, forming a multi-component system that provides both durability and easy cleaning properties
2Object-affected harmful factors
If the coating is made more resistant to contaminants, then dirt build-up is prevented, but the coating may become harder to clean or more complex
Solution Approach 1:
The patent converts the potential harm of strong contaminant resistance into a benefit by designing a coating that allows dirt to sit on top without bonding, making removal easier while maintaining protection against harmful contaminant reactions
Solution Approach 2:
The invention adjusts surface energy parameters through polydialkylsiloxane incorporation to create a surface where contaminants do not adhere strongly, enabling easy cleaning while maintaining contaminant resistance
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 effectively prevents damage to coated surfaces by ensuring adhesive release of dirt, maintaining the integrity of the coating during cleaning and reducing the risk of cohesive failure, thus enhancing the ease of cleaning and longevity of the coated substrates.
Implementation Method 1
a film-forming polymer comprising reactive epoxy functional groups; a curing agent comprising acid functional groups reactive with the reactive functional groups
Implementation Method 2
an acrylic polymer component comprising: epoxy functional groups; and polydialkylsiloxane functional groups
Data Source
AI summary
The present invention is directed to curable film-forming compositions comprising acrylic polymers, and to coated substrates comprising the curable film-forming composition applied to at least one surface of the substrates. The acrylic polymers comprise epoxy functional groups and polydialkylsiloxane functional groups. The present invention is also drawn to methods of mitigating dirt build-up on a substrate, comprising applying to at least a portion of the substrate the curable film-forming composition described above and at least partially curing the curable film-forming composition.