US 11,787,968 B2
Coating composition
Debra L. Singer, Wexford, PA (US); William H. Retsch, Jr., Allison Park, PA (US); Dennis A. Simpson, Sarver, PA (US); Kam Lun Lock, Orpington (GB); Michael G. Olah, Pittsburgh, PA (US); Hongying Zhou, Allison Park, PA (US); and Maria Magdalena Vladan, Burjassot (ES)
Assigned to PPG Industries Ohio, Inc., Cleveland, OH (US)
Appl. No. 16/954,131
Filed by PPG Industries Ohio, Inc., Cleveland, OH (US)
PCT Filed Dec. 13, 2018, PCT No. PCT/US2018/065409
§ 371(c)(1), (2) Date Jun. 15, 2020,
PCT Pub. No. WO2019/118697, PCT Pub. Date Jun. 20, 2019.
Claims priority of application No. 17207692 (EP), filed on Dec. 15, 2017.
Prior Publication US 2021/0163778 A1, Jun. 3, 2021
Int. Cl. C09D 133/02 (2006.01); C08F 220/18 (2006.01); C08F 2/04 (2006.01); C08F 2/22 (2006.01); C08F 220/06 (2006.01); C08K 5/00 (2006.01)
CPC C09D 133/02 (2013.01) [C08F 2/04 (2013.01); C08F 2/22 (2013.01); C08F 220/06 (2013.01); C08F 220/1806 (2020.02); C08K 5/0025 (2013.01)] 14 Claims
 
1. A food and/or beverage package coated on at least a portion thereof with a coating, the coating being derived from a coating composition, the coating composition comprising:
a) a solution polymerised acrylic material;
b) an emulsion polymerised acrylic latex material, wherein one or both of the solution polymerised acrylic material and the emulsion polymerised acrylic latex material have acid functionality; and
c) a crosslinker material operable to crosslink the acid functionality on the solution polymerised acrylic material and/or emulsion polymerised acrylic latex material;
wherein the crosslinker material is hydroxyalkylamide crosslinker comprising a polyhydroxyalkylamide material having the formula (IV):

OG Complex Work Unit Chemistry
wherein Z represents a polymer or an alkylene, alkenylene, alkynylene or arylene group; Z′ represents a bivalent organic linking group; m is 0 or 1; X represents a bivalent organic bridging group; R represents a hydroxyalkylamide group; and n is at least 2.