2-HYDROXY-6-NAPHTHOL SULPHONIC ACID SODIUM SALTS AND GLYCIDYL ADDUCT AS EMULSION POLYMERISATION DISPERSER AND METHOD OF PRODUCING LATEX USING THEREOF Russian patent published in 2021 - IPC C07C303/32 C07C309/43 C08K5/42 

FIELD: chemistry.

SUBSTANCE: invention relates to sodium salts of 2-hydroxy-6-naphthol sulphonic acid and:

,

where R is an allyl or acrylate group, and a method of producing latex in an aqueous medium in the presence of an emulsifier of a radical initiator and said compound as dispersant in amount of 0.1–2.0 pts.wt. to 100 pts.wt (co)monomers.

EFFECT: use of disclosed compounds as emulsion polymerisation dispersants enables to significantly improve environmental properties of the process of producing latex, since virtually completely prevents ingress of harmful naphthalene-containing compounds into waste water and substantially increases resistance of latex to temperature effects (by 10–15 °C), as well as increases aggregative stability at the polymerisation stage, preventing formation of coagulum, and formation of gel during storage of latex.

2 cl, 2 tbl, 8 ex