Polyoxazoline curing for packaging coating compositions

By using a coating composition of acid-functional polymers and polyoxazoline, the problem of formaldehyde content in food and beverage packaging has been solved, resulting in a formaldehyde-free, corrosion-resistant packaging coating that improves the safety and durability of the packaging.

CN122405089APending Publication Date: 2026-07-17PPG INDUSTRIES OHIO INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2018-12-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing food and beverage packaging coatings contain formaldehyde, making it difficult to meet safety and environmental protection requirements, and traditional coatings are not performing well in harsh environments.

Method used

A coating composition consisting of an acid-functionalized polymer and polyoxazoline is used to form a formaldehyde-free coating through heat curing. This coating is suitable for packaging surfaces and enhances corrosion resistance and durability.

Benefits of technology

It provides a safe and environmentally friendly packaging coating that maintains performance in harsh environments, prevents corrosion of metal packaging, and extends the shelf life of food and beverages.

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Abstract

公开了涂覆包装和用于涂覆此类包装的方法。涂层组合物包括：包括酸官能度的聚合物以及聚噁唑啉。
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Citation Information

Patent Citations

  • Polymeric polyoxazolines

    US10988573B2

  • Process for producing homogeneous modified copolymers of ethylene / alpha-olefin carboxylic acids or esters

    US4988781A

  • Tape loading mechanism for magnetic recording and reproducing apparatus

    US5717539A