METHOD OF ADJUSTING TACK VALUE OF BINDER COMPOSITION Russian patent published in 2017 - IPC C08G18/48 C08G18/76 C09J175/08 

FIELD: chemistry.

SUBSTANCE: method of forming lignocellulosic article from a reactive mixture comprising lignocellulosic bases and a composition containing an emulsion comprising water and emulsifiable prepolymer is disclosed, wherein the emulsifiable prepolymer is a reaction product (i) of an isocyanate compound, (ii) a polyol compound and (iii) a monool compound, while the method comprises adjusting the ratio of the reactive group of component (i) to (ii) for tack value to reach the range from 1 to 4 using TACK TEST METHOD. The method comprises applying a binder material to the lignocellulosic substrate to form a reactive mixture and then curing it.

EFFECT: disclosed method enables to produce high-quality lignocellulosic materials using formaldehyde-free emulsions.

11 cl, 1 dwg, 3 tbl