(Co)polymer-Acrylic Block Copolymer Coating Adhesion
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Solution Overview
Problem
Existing coatings for food and beverage containers lack effective adhesion, high-speed application capabilities, and sufficient resistance to corrosive contents, particularly in high-acid environments.
Innovation Solution
A (co)polymer(A)-acrylic block copolymer is synthesized by reacting an acrylic material with a (co)polymer(A) that has a substantially terminal ethylenically unsaturated functional group, and this copolymer is used in a coating composition that includes a crosslinking material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional coating systems are used, then coating application can be performed, but adhesion to substrate is insufficient
Solution Approach 1:
The patent employs a block copolymer composed of polyester blocks and acrylic blocks, creating a composite material structure where each block contributes different properties. The polyester blocks provide adhesion to the substrate while the acrylic blocks provide flexibility and resistance to corrosive contents, thereby resolving the adhesion issue without compromising overall coating performance
Solution Approach 2:
The invention creates local quality differentiation within the coating by having specific polyester blocks with terminal functional groups that preferentially interact with the substrate surface for adhesion, while other regions of the copolymer provide different functions such as flexibility and corrosion resistance. This localized functional distribution enhances adhesion without sacrificing other critical properties
2Productivity
If conventional coating systems are used, then coating can be applied, but high-speed application capability is lacking
Solution Approach 1:
The patent modifies the molecular parameters of the coating polymer by creating a block copolymer structure with specific molecular weights and functional group distributions. This enables the coating to maintain quality at high application speeds by optimizing the balance between adhesion, flexibility, and curing characteristics
3Object-affected harmful factors
If conventional coating systems are used, then coating can be formed, but resistance to corrosive contents is insufficient
Solution Approach 1:
The block copolymer structure creates a composite material where acrylic blocks provide chemical resistance to corrosive contents while polyester blocks maintain structural integrity and adhesion. This composite approach allows the coating to resist corrosion without compromising the overall strength and integrity of the coating film
4Reliability
If conventional coating systems are used, then coating can be applied, but heat aging resistance is insufficient
Solution Approach 1:
The invention optimizes the thermal parameters of the coating by incorporating polyester blocks with specific glass transition temperatures and thermal stability characteristics. This enables the coating to maintain its properties and resist heat aging over extended service periods, thereby improving both heat aging resistance and overall coating lifespan
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 resulting coating composition provides excellent adhesion, high-speed application, and improved resistance to corrosion and heat aging, making it suitable for use with food and beverage containers.
Implementation Method 1
reacting reactants comprising an acrylic material with a (co)polymer(A), wherein the (co)polymer(A) comprises a substantially terminal ethylenically unsaturated functional group, wherein the acrylic material is reacted with the (co)polymer(A) so that the acrylic material bonds to the (co)polymer(A) via the substantially terminal ethylenically unsaturated functional group
Implementation Method 2
a coating composition comprising: a) a (co)polymer(A)-acrylic block copolymer... and b) a crosslinking material
Data Source
AI summary
A (co)polymer(A)-acrylic block copolymer obtainable by reacting reactants comprising an acrylic material with a (co)polymer(A) is disclosed. The (co)polymer(A) comprises a substantially terminal ethylenically unsaturated functional group. The acrylic material is reacted with the (co)polymer(A) so that the acrylic material bonds to the (co)polymer(A) via the substantially terminal ethylenically unsaturated functional group. The disclosure extends to a coating composition comprising the block copolymer; articles, such as a package, packaging, a vehicle, a structure, or parts thereof coated with the coating composition; and methods of making the same.