ADHESIVE COMPOSITION AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2022 - IPC C09J4/00 C09J7/20 C09J11/06 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to an adhesive composition, a method for production thereof and an adhesive product containing an adhesive composition. Adhesive composition contains lysine, oxaloacetic acid and water, in which lysine and oxaloacetic acid are present in the form of an aqueous salt solution and do not form precipitation in the adhesive composition. Molar ratio of lysine to oxaloacetic acid ranges from 1.8:1 to 1:3, and content of solid substance in adhesive composition ranges from 0.1 to 65 wt. % per total weight of adhesive composition. Method of producing adhesive composition involves mixing lysine, oxaloacetic acid and water to obtain a mixture, mixing the mixture at a temperature of less than 40 °C, wherein content of lysine, oxalacetic acid and water is controlled so that precipitates of lysine and oxalacetic acid are not formed in the adhesive composition. Described also is an adhesive product containing an adhesive composition. Adhesive product may include a substrate and an adhesive layer.

EFFECT: providing an adhesive composition which does not form deposits after storage or application for 14 days or more, can be used for gluing various types of substrates selected from glass, stainless steel, polymer film, metal, plastic, paper, fibre and soil, wherein the adhesive composition can be removed with water, is characterized by improved processability and purity of the working medium compared to adhesives based on organic solvents.

10 cl, 11 tbl, 7 ex