COATING COMPOSITION CONTAINING COMPLEX POLYESTER WITH HIGH Mn AND COMPLEX POLYESTER WITH LOW Mn Russian patent published in 2018 - IPC C09D167/02 B65D25/14 

FIELD: chemistry.

SUBSTANCE: invention relates to coating compositions containing polyesters, and can also be used for coating food and beverage containers, on which these coating compositions are applied, including two-layer coating systems. Said coating composition contains: (a) a first polyester material having a number average molecular weight (Mn) from 500 to 5,500 Da and a glass transition temperature Tg from 40 to 120 °C and (b) a second polyester material having a number average molecular weight (Mn) of from 6,000 to 100,000 Da. In the method, a two-layer coating system for food and / or beverage containers as a top layer contains a polyvinyl chloride resin. Also, the invention relates to a containers for food products and / or beverages, a part of which is at least covered with a coating composition based on a polyester material and, in particular, a two-layer coating system.

EFFECT: invention provides excellent adhesion to the substrate, safety in contact with food, high speed of coating and properties of the coating after curing suitable for their final use.

15 cl, 4 tbl, 5 ex