ADHESIVE COMPOSITIONS Russian patent published in 2015 - IPC C08G73/02 C08L89/00 C08L97/02 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to adhesive composition and method of its obtaining, to polyamidoamine-epihalogenhydrin resin (PAE), as well as to method of obtaining composite material based on wood, laminate, plywood, chipboard, fibreboard. Method on obtaining adhesive composition includes combination of PAE with protein source. Adhesive composition possesses content of solid substances exceeding 45 wt % counted per the total glue weight. The total content of solid substances in PAE resin and protein source constitutes not less than 45% of the total content of solid substances in glue. PAE resin possesses content of solid substances, exceeding 40% and is characterised by Brookfield viscosity, measured by means of Brookfield LV viscometer, equal less than 200 cP, content of azetidine groups equal more than 0.75 meq./g, RSV value, equal lower than 0.3 dl/g, stability in ageing, exceeding one week at 32°C. Method of composite material obtaining includes addition of adhesive composition to suitable substrate.

EFFECT: invention makes it possible to considerably increase content of solid substances in glue and characteristics of composite material.

28 cl, 4 ex