公开(公告)号：US20230257624A1

公开(公告)日：2023-08-17

申请号：US18015013

申请日：2021-07-07

Applicant: Bostik, Inc.

Inventor： Joshua HARJU ,  Deepa PUTHANPARAMBIL

IPC: C09D167/02 ,  C08G63/189 ,  C08G63/199

CPC classification number: C09D167/02 ,  C08G63/189 ,  C08G63/199

Abstract: A copolyester resin comprises the reaction product of at least two aliphatic diols and at least two aromatic diacids or diesters comprising a naphthalene-based monomer and terephthalic-based monomer and has a glass transition temperature between about 65° C. and about 95° C. A coating comprises a copolyester resin comprising the reaction product of at least two aliphatic diols and at least one aromatic diacid or diester comprising the naphthalene-based monomer; a cross-linker; and metal catalyst. The coating composition may be solvated and provides excellent retort resistance, flexibility, chemical resistance, and ability to bond to metal substrates, including tin-plated steel. The copolyester resin may be food grade compliant and alcohol compliant, making it suitable for use as a can coating, especially for beverages and even alcoholic beverages with no restrictions on the alcohol content.