METHOD FOR PRODUCING AN ADHESIVE COMPOSITION BASED ON MODIFIED LEVAN EXOPOLYSACCHARIDE Russian patent published in 2021 - IPC C12P19/04 C09J105/00 

FIELD: adhesive compositions.

SUBSTANCE: invention relates to the field of obtaining adhesive compositions used in various industries. A method for producing an adhesive composition containing glycerin, boric acid and a culture liquid based on a modified levan exopolysaccharide is proposed. The adhesive capacity of the exopolysaccharide is increased by ozonization of the culture liquid of the Azotobacter vinelandii B-5787 bacteria strain of Russian National Collection of Industrial Microorganisms (RNCIM), as a result of which the levan polysaccharide is modified, which improves the physical and chemical characteristics of the adhesive. The strain of bacteria Azotobacter vinelandii D-08 is cultured on a molasses medium at a temperature of 28ºC for 72 hours. The culture liquid is modified by ozonization, followed by evaporation to the required consistency of glue, 0.5% of the plasticizer - glycerol and 1% of boric acid are added to the adhesive.

EFFECT: method provides improved quality of the adhesive composition, in particular, increased adhesive ability of the adhesive and expanded application area.

1 cl, 1 dwg