Protective Coating Film Composition for Adhesion and Clean Peeling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional coating compositions for protecting painted surfaces of automobiles and heavy equipment during storage and transport cause environmental pollution due to the use of petroleum-based solvents and alkaline detergents for removal, and they lack adequate adhesive force and ease of peeling.
Innovation Solution
A composition comprising an acrylic emulsion resin with specific molecular weight and glass transition temperature, a polyurethane dispersion with specific molecular weight and glass transition temperature, and a polyolefin resin, which are combined to form a coating film that is easy to peel off and has excellent adhesive force, without using harmful solvents for removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coating compositions are used, then the painted surfaces are protected during storage and transport, but environmental pollution occurs due to the use of petroleum-based solvents and alkaline detergents for removal
Solution Approach 1:
The patent changes the chemical composition parameters by replacing petroleum-based solvents with water-based acrylic emulsion resin and eliminating alkaline detergents, thereby maintaining protection functionality while eliminating environmental pollution
Solution Approach 2:
The patent converts the harmful removal process requiring petroleum-based solvents and alkaline detergents into a beneficial water-based removal process, where the coating can be easily removed with water without environmental pollution
2Reliability
If conventional coating compositions are used, then the painted surfaces are protected during storage and transport, but adequate adhesive force and ease of peeling are not achieved
Solution Approach 1:
The patent optimizes the molecular weight and glass transition temperature parameters of the acrylic emulsion resin and polyurethane dispersion to achieve the right balance between adhesion strength and ease of peeling
Solution Approach 2:
The patent uses a composite material system combining acrylic emulsion resin, polyurethane dispersion, and polyolefin resin to achieve both strong adhesion and easy peeling properties that cannot be obtained with single materials
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 provides fast drying, excellent initial adhesion, retains adhesion over time, and allows clean removal without residue, while maintaining mechanical properties like water and solvent resistance.
Implementation Method 1
the composition for a coating protecting film has fast drying speed, has excellent initial adhesion and adhesion retention
Implementation Method 2
the coating film can be removed cleanly and does not leave residue after removal
Data Source
AI summary
The present invention relates to a composition for a coating protecting film comprising: an acrylic emulsion resin; a polyurethane dispersion; and a polyolefin resin, wherein the acrylic emulsion resin has a weight average molecular weight of 200,000 to 300,000 g/mol and a glass transition temperature of 50 to 80° C., and the polyurethane dispersion has a weight average molecular weight of 40,000 to 60,000 g/mol and a glass transition temperature of −70 to −20° C.