TWO-COMPONENT ADHESIVE COMPOSITION AND ITS PREPARATION METHOD Russian patent published in 2021 - IPC C08G18/10 C08G18/76 C08G18/42 C08G18/48 C09J175/04 C09J175/06 C09J175/08 

FIELD: chemistry.

SUBSTANCE: present invention relates to a two-component adhesive composition that does not contain a solvent, layered material and to a method for manufacturing layered material. The composition includes an isocyanate component, a polyol component, as well as adhesion amplifier. The isocyanate component contains isocyanate prepolymer, which is a product of chemical reaction of polyisocyanate with isocyanate-active component containing 40% by wt. of complex polyester polyol per dry mass of isocyanate-active component. The polyol component has average functionality within the range from 2.5 to 4.5 and average molecular mass within the range from 250 to 1000 g/mol and contains 30% by wt. of simple polyester polyol per dry mass of the polyol component.

EFFECT: obtained composition has improved thermal and chemical resistance while maintaining low working viscosity and increased period of working viability even at increased temperatures.

20 cl, 2 tbl, 5 ex