COLD CURING ADHESIVE COMPOSITION Russian patent published in 2023 - IPC C09J163/02 C08G59/18 C08G59/50 C09J11/02 C08L63/02 C08K3/36 C08K5/17 

FIELD: construction materials.

SUBSTANCE: invention relates to the field of creating two-component cold curing compositions intended for application as binders and adhesives used in the construction industry for repair and reinforcement of concrete or brick The present invention relates to a two-component cold curing adhesive composition containing component A and component B at a ratio of component A to component B of 100:(44-53) wt.pts. Component A at a certain mass ratio specified in the claim includes: an epoxy resin based on bisphenol A (EEW=180-190 g/eq.), an active diluent selected from the group of aliphatic and aromatic glycidyl and diglycidyl ethers, a pigment, a dispersed mineral filler, which is a mixture of dispersed mineral filler of granulometric composition with an average particle size of 14÷23 mcm and a dispersed mineral filler with a granulometric composition with an average particle size of 200÷219 mcm, a defoamer, a wetting and dispersion enhancer, nanoscale hydrophilic fumed silica (silicon dioxide). Component B at a certain mass ratio specified in the claim includes: a hardener based on adducts of cycloaliphatic polyamines, nanosized hydrophilic fumed silica, a tertiary amine-based curing accelerator, a thixotropy enhancer, a dispersed mineral filler, being a mixture of dispersed mineral fillers with a granulometric composition with an average particle size of 14÷23 mcm and 43÷60 mcm and dispersed mineral filler with a granulometric composition with an average particle size of 200÷219 mcm and an organic dye.

EFFECT: technical result is an increase in the index of the thixotropic adhesive composition and indicators of the adhesion strength of the cured composition to concrete with a simultaneous decrease in the coefficient of variation of strength indicators, a decrease in the gelation time and an increase in thermomechanical characteristics.

1 cl, 3 tbl, 18 ex