FIELD: chemistry.
SUBSTANCE: invention relates to an adhesive composition for gluing lignocellulose materials. The adhesive composition contains a cross-linking agent, a non-carbamide diluent which is contained in an amount ranging from about 0.01 wt % to about 75 wt % with respect to the total wet mass of the composition, as well as an aqueous mixture of a protein source. The cross-linking agent essentially does not contain formaldehyde and can be selected from a group comprising polyamidoamine-epichlorohydrin resins, polyamine-epichlorohydrin resins, isocyanate, epoxide, aldehyde starches containing aldehyde functional groups, aldehyde, aldehyde functional resins as cross-linking agents selected from a group comprising glyoxal-based cross-linking agents and glyoxalated polyacrylamides and mixtures thereof. The non-carbamide diluent is at least one compound selected from a group comprising diethylene glycol, propylene glycol, 2-methoxyethanol, glycerol, glycerol derivative, ethylene carbonate, propylene carbonate, methylpyrrolidone, low-molecular polyethylene glycol, methoxypolyethylene glycol, saccharose, lactose, sorbitol, maltodextrin, cyclodextrin, carbohydrate, corn syrup, hydrolysed polysaccharide, sodium sulphate, sodium phosphate, sodium chloride, alum, bentonite, aluminosilicate, alkali metal aluminosilicate, water-soluble organic compound, formamide, acetamide, N-methylpyrrolidone, vegetable oil, silicone oil and mineral oil. To prepare a lignocellulose composite, the adhesive composition is applied onto a lignocellulose substrate, followed by curing the adhesive composition and obtaining a lignocellulose composite.
EFFECT: adhesive composition has low viscosity while maintaining good adhesive properties.
16 cl, 5 tbl, 41 ex
