Coating composition

EP4758182A1Pending Publication Date: 2026-06-17PPG INDUSTRIES OHIO INC
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
PPG INDUSTRIES OHIO INC
Filing Date
2024-08-08
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

Existing coatings for food and beverage packaging often lack multiple desirable properties such as high-speed application, good adhesion, safety for food contact, and suitable end-use properties, typically exhibiting only one or two of these characteristics.

Method used

A coating composition comprising a film former material and a residue of a polymerisable material with sulfonic acid-, sulfate-, phosphonic acid-, or phosphate-functional groups, which can include a polyester-(co)polymer(B) block and/or graft copolymer or a copolymer additive obtained by polymerising an ethylenically unsaturated material with the polymerisable material.

Benefits of technology

The coating composition achieves improved properties such as enhanced enamel rating, adhesion, solvent fraction, and reduced feathering, making it suitable for various packaging applications, including food and beverage packaging.

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Patent Text Reader

Abstract

A coating composition comprising a film former material; and a residue of a polymerisable material, wherein the residue comprises a sulfonic acid-, a sulfate-, a phosphonic acid- and / or a phosphate- functional group. The coating composition comprises a polyester-(co)polymer(B) block and / or graft copolymer film former material, wherein the block and / or graft copolymer comprises a polyester (co)polymer and a (co)polymer(B), wherein (co)polymer(B) comprises the polymerisable material residue comprising a sulfonic acid-, a sulfate-, a phosphonic acid- and / or a phosphate- functional group; and / or the coating composition comprises a copolymer additive, wherein the copolymer additive comprises the polymerisable material residue comprising a sulfonic acid-, a sulfate-, a phosphonic acid- and / or a phosphate- functional group, wherein the copolymer additive is obtainable by polymerising an ethylenically unsaturated material with the polymerisable material. The disclosure extends to coating compositions for food and / or beverage packaging and to articles coated with the coating composition as well as to methods of preparing and applying the coating composition.
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