ADHESIVE SYSTEM WITH LOW FORMALDEHYDE RELEASE Russian patent published in 2014 - IPC C09J161/28 C09J161/32 C09J5/00 C09J11/04 C09J11/06 

FIELD: chemistry.

SUBSTANCE: invention relates to an improved two-component adhesive system, a set, including the said two adhesive components, its application and method of obtaining products from wood materials for internal decoration, namely of pressed products, elements of parquet floor and furniture board with very low formaldehyde release and to products from wood materials for internal decoration with improved properties. The two-component adhesive system includes an adhesive component I, including 50-70 wt % of a melamine-formaldehyde (MF) type resin in 25-40 wt % of water and an adhesive component II, including 20-40 wt % of a water-based adhesive dispersion, 15-40 wt % of a formaldehyde absorber, an acid compound in an amount sufficient for pH of the adhesive component II to constitute 1.5-6.5 and 25-40 wt % of water. The adhesive components I and II are applied in weight ratio I:II within the range from 1:0.5 to 1:1.5 and the adhesive system has a molar ratio of formaldehyde (F) to all amino groups (F/ NH₂) in the range from 0.2 to 0.7.

EFFECT: adhesive system possesses both very low level of formaldehyde release and good adhesive properties.

27 cl, 10 tbl, 6 ex