GLUE FOR PLYWOOD Russian patent published in 2018 - IPC C09J161/00 

FIELD: chemistry.

SUBSTANCE: invention relates to adhesives used in the woodworking industry and can be used in the manufacture of waterproof plywood. Adhesive for plywood includes a furan resin in the form of FA furfuralacetone monomer and a hardener is a solution of n-toluene sulfonic acid in furfural, as well as the pulverized fraction from the screening of flax bonfires with the following ratio of components in parts by weight: furfuralacetone monomer FA – 100, toluensulfonic acid – 5–6, furfural – 5–6, pulverized fraction from the scattering of flax bonfires – 7.5–10.

EFFECT: invention excludes the leakage of glue through the outer layers of the veneer and provides high physical and mechanical properties of the plywood.

1 cl, 1 dwg