Waterborne Polyurethane Coating for Infrared Absorption

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Solution Overview

Problem

Existing window coatings that absorb light radiation are impractical due to their size-specific application, additional application steps, and the use of toxic chemicals, while also lacking in optical clarity, consistency, and practicality.

Innovation Solution

A water-based polymer coating system comprising a water-borne polymer, a non-ionic surfactant, a levelling component, an IR absorber, and at least one UV absorber, which can be applied to hard surfaces to form a clear or tinted flexible coating that absorbs infrared and ultraviolet light radiation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional window coatings are used to absorb light radiation, then infrared and ultraviolet light absorption is achieved, but the coatings require additional application steps and are not practically applicable

Engineering Contradiction:

Improveinfrared and ultraviolet light absorptionVSAvoidapplication simplicity

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent combines multiple functions (adhesion, flexibility, and light radiation absorption) into a single coating composition. The composition includes polymer, surfactant, levelling component, IR absorber, and UV absorber all in one formulation, eliminating the need for separate application steps for each function.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The coating composition is designed to perform multiple functions simultaneously: it provides adhesion to hard surfaces, maintains flexibility, and absorbs both infrared and ultraviolet light radiation, making it a universal solution for window applications.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Object-affected harmful factors

If conventional window coatings are applied to fit existing window sizes, then light radiation absorption is achieved, but the process becomes impractical and time-consuming

Engineering Contradiction:

Improvelight radiation absorptionVSAvoidapplication time

Core Design Contradiction:

Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The patent modifies the physical and chemical parameters of the coating formulation to enable direct application. By adjusting viscosity, adhesion properties, and composition stability, the coating can be applied directly to windows of various sizes without pre-cutting, significantly reducing application time.

Inventive Principle:

Principle #35Parameter changes

3Illumination intensity

If conventional coatings are used to achieve optical clarity, then transparency is improved, but the coatings contain toxic chemicals that make them impractical

Engineering Contradiction:

Improveoptical clarityVSAvoidtoxic chemicals

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters by replacing toxic substances with non-toxic alternatives. The formulation uses safe polymers, food-grade surfactants, and non-toxic metal oxides for IR and UV absorption, maintaining optical clarity while eliminating harmful chemicals.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent converts potentially harmful metal oxides into beneficial non-toxic IR and UV absorbers by using them in controlled concentrations within the polymer matrix, where they provide radiation absorption functionality without the toxicity issues of conventional coating chemicals.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

4Manufacturing precision

If conventional coatings are applied to achieve even coverage, then coating uniformity is improved, but additional application steps are required

Engineering Contradiction:

Improvecoating uniformityVSAvoidapplication process complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent incorporates levelling components and surfactants in the preliminary formulation stage, which automatically ensure even coating distribution during application. This preliminary preparation eliminates the need for additional manual steps to achieve uniform coverage.

Inventive Principle:

Principle #10Preliminary action

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 coating system provides even and thin coverage on hard surfaces, effectively absorbing infrared and ultraviolet light radiation, while maintaining optical clarity and flexibility, and is free from toxic chemicals.

Implementation Method 1

the coating is capable of absorbing ultra violet and infrared energy

Methodology Applied

Scientific EffectInfrared absorption: Absorption (EM radiation)

Implementation Method 2

the coating is capable of absorbing ultra violet and infrared energy

Methodology Applied

Scientific EffectUltraviolet absorption: Absorption (EM radiation)

Data Source

PatentUS12331218B2Waterborne light radiation polyurethane mixed polyester polymer coating system

Publication Date: 2025.06.17 SOLARIS TECH LTD

AI summary

The disclosure is directed to an aqueous composition comprising a waterborne polymer, a non-ionic surfactant, a levelling component, an IR absorber, and at least one UV absorber.