One-Component Waterborne Coating with Reactive Binder

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Solution Overview

Problem

There is a need for one-component waterborne coatings with improved physical durability, particularly in low gloss coatings, which are traditionally susceptible to physical damage, as existing solutions like polymer waxes and two-component coatings have limited benefits.

Innovation Solution

A one-component waterborne coating composition that includes a binder polymer derived from monomers with reactive functional groups that can interact with functionalized pigment particles, either directly or via a crosslinker, to enhance the bonding and crosslinking within the coating, thereby improving durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If two-component coatings with hardener, catalyst, crosslinker or activator are used, then physical durability is improved, but ease of operation deteriorates

Engineering Contradiction:

Improvephysical durabilityVSAvoidconvenience to user

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent combines the binder polymer and crosslinker into a single one-component coating composition. The binder polymer contains both the polymer matrix and reactive functional groups, while the crosslinker is incorporated as a separate component that reacts in situ after application. This merging eliminates the need for separate hardener and catalyst containers, simplifying user operation while maintaining the durability benefits of crosslinked structures.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The binder polymer is pre-functionalized with reactive groups during manufacturing, and the crosslinker is pre-incorporated into the coating composition. These components are prepared in advance but remain stable during storage, reacting only after application to the substrate. This preliminary preparation allows the coating to maintain simplicity for the user while ensuring durability through pre-planned crosslinking chemistry.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If polymer waxes and slip aids are used, then physical durability is improved, but the benefits are limited

Engineering Contradiction:

Improvephysical durabilityVSAvoidlimitation of benefits

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent creates a composite coating system where the binder polymer is chemically bonded to functionalized pigment particles through crosslinking. This composite structure integrates the polymer matrix with pigment particles at the molecular level, providing enhanced burnish, mar, and scratch resistance. The crosslinked composite structure is more versatile and durable compared to simple polymer wax coatings.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent modifies the chemical parameters of the coating system by introducing reactive functional groups on the binder polymer and matching functional linkages on the pigment particles. This parameter change enables covalent bonding between polymer and pigment, fundamentally altering the coating's physical properties to achieve superior durability and adaptability across different application scenarios.

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If flat paint coatings are used, then ease of operation is improved, but physical durability deteriorates

Engineering Contradiction:

Improvesuitability for flat coatingsVSAvoidphysical durability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent changes the chemical parameters of flat paint coatings by incorporating reactive functional groups on the binder polymer and functionalized pigment particles. This parameter change enables crosslinking within the flat coating formulation, providing burnish, mar, and scratch resistance without compromising the flat finish appearance. The coating maintains ease of application while achieving enhanced physical durability through chemical modification.

Inventive Principle:

Principle #35Parameter changes

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 achieves improved burnish, mar, and scratch resistance in coated articles, compared to similar coatings without these functional components, resulting in enhanced physical durability.

Implementation Method 1

each functional linkage of each functionalized pigment particle is capable of interacting with a reactive functional group on the binder polymer either directly or via an optional crosslinker to bond the functionalized pigment particle to the binder polymer

Methodology Applied

Scientific EffectChemical Bonding: Chemical Bonding

Implementation Method 2

the same optional crosslinker is capable of reacting with two reactive functional groups on binder polymer to crosslink the binder polymer to itself or additional binder polymer

Methodology Applied

Scientific EffectCrosslinking:

Data Source

PatentUS12018173B1High physical durability coating compositions

Publication Date: 2024.06.25 SWIMC LLC

AI summary

One-component waterborne coating compositions or paint having an optional crosslinker and a reactive binder polymer that interacts with a functionalized pigment, wherein the reactive binder polymer is derived from at least one monomer having at least one reactive functional group that interacts with a functional linkage of the functionalized pigment to provide high physical durability performance, including improved resistance to burnish, mar and scratching.