Coating compositions that cure at low temperatures

By using a composition of polymers containing carboxylic acid or anhydride functional groups and a crosslinking agent, the problems of high energy consumption and high emissions caused by high-temperature curing were solved, and the formation of high-performance coatings at low temperatures was achieved.

CN122249515APending Publication Date: 2026-06-19PPG INDUSTRIES OHIO INC
1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PPG INDUSTRIES OHIO INC
Filing Date
2024-11-12
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

Existing coating compositions cure at high temperatures, resulting in high energy consumption and the generation of large amounts of carbon dioxide and carbon monoxide, and it is difficult to form high-performance coatings at low temperatures.

⚗Method used

A composition containing a polymer with carboxylic acid or anhydride functional groups and a crosslinking agent is used to form a coating by crosslinking at low temperature. The acid value of the polymer is in the range of 10 to 100 mg KOH/g polymer. The crosslinking agent reacts with the carboxylic acid or anhydride groups in the polymer to form a low-temperature curing coating.

🎯Benefits of technology

It enables coatings to cure at low temperatures, reducing energy consumption and greenhouse gas emissions while providing high-performance coating effects.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

A coating composition is provided comprising (a) a polymer obtained from components comprising: (i) a compound comprising a functional group that reacts with a carboxylic acid or a corresponding anhydride, and (ii) a compound comprising a carboxylic acid or a corresponding anhydride functional group, wherein the polymer comprises a carboxylic acid or anhydride functional group directly bonded to an aromatic ring, and (b) a crosslinking agent comprising a functional group that reacts with the carboxylic acid or anhydride group in the polymer. The acid value of the polymer (a), based on the total resin solids, may be at least 10, such as at least 12, at least 14, at least 15, or at least 20, and may be in the range of 10 to 100, such as 12 to 75, 14 to 60, 15 to 100, or 15 to 50 mg KOH / g polymer.
Need to check novelty before this filing date? Find Prior Art