LATEX EMULSIONS AND COATING COMPOSITION FORMED FROM LATEX EMULSIONS Russian patent published in 2017 - IPC C09D151/00 B65D25/14 C08F2/00 C08F2/22 C08F6/14 C09D133/06 

FIELD: process engineering.

SUBSTANCE: invention relates to latex emulsions that can be used in producing coating compositions that are not sensitive to water, have good resistance to clouding and a good ability to be sterilized in an autoclave. In some embodiments, the coating compositions are used for appltyng the coatings to such bases as cans or packaging materials for storing food and beverages. The coating compositions of the invention can be prepared by polymerizing at least one ethylenically unsaturated monomer component, a stabilizer containing a strong acid, and an initiator in a carrier to form an emulsion; by polymerizing the emulsion with at least one other ethylenically unsaturated monomer component to obtain multicomponent latex emulsion; and by the interaction of the multicomponent latex emulsion with a neutralizing agent to form a coating composition. Wherein the multicomponent latex emulsion comprises a core and a shell, the core having less functional monomers than the shell. The methods of applying the coating on bases by means of coating compositions are disclosed as well.

EFFECT: invention allows to prepare latex with the gel content of morer than 35 wt %, providing the coatings with elasticity / adhesion with good curability in a short exposure time while processing in an oven the films in on a metal base, used for container covers for beer or a beverage.

33 cl, 3 tbl, 8 ex