METHOD OF INCREASING ADHESIVE STRENGTH OF DRY CONSTRUCTION ADHESIVE MIXTURES ON CEMENT BINDER Russian patent published in 2024 - IPC C04B20/04 C04B20/10 C04B28/04 C04B111/20 

FIELD: production of construction materials.

SUBSTANCE: invention relates to production of adhesive dry construction mixtures based on cement binder. Method of increasing adhesion strength of adhesive dry construction mixtures on cement binder involves modification of carbonate mineral filler with an anionic surfactant. First, carbonate mineral filler is prepared in a rotating drum of a two-shaft cyclic mixer with a system for injecting liquid components through nozzles by microspraying a liquid anionic surfactant in amount of 2 to 10 wt.% per total weight of said filler. Further, the obtained mass is dried to moisture content of not more than 0.5% by weight using a thermally insulated jacket of the mixer. Thereafter, the ready dry additive is added to the adhesive composition in an amount of up to 60% by weight with respect to the total weight of the mixture.

EFFECT: high adhesion strength of the tile adhesive.

1 cl, 3 tbl, 3 ex