CURABLE COMPOSITION WITHOUT FORMALDEHYDE Russian patent published in 2020 - IPC C09J133/02 C09J125/04 C09J133/04 C09J179/04 D21H21/16 D21H17/14 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to a curable aqueous binder composition which does not contain formaldehyde. Curable aqueous composition of binder relative to weight of dry solid substances contains, wt %: a) from 80 to 99.8 emulsion polymer containing ethylene-unsaturated monomers from 0.1 to 20 wt % acid monomers, b) from 0.1 to 10 oxazoline-containing polymer and c) from 0.1 to 10 aqueous dispersion of acrylic polymer containing from 40 to 100 wt % of acid monomers and having weighted average molecular weight in range from 2,000 to 500,000. Described also is a method of forming a curable aqueous composition, a method of forming a cured material, product containing non-woven material and binder containing curable aqueous composition, glue to be glued under pressure, and laminating glue containing curable aqueous composition.

EFFECT: providing a binder which does not contain formaldehyde, characterized by water resistance, wet strength, resistance to solvents, particularly isopropyl alcohol, after curing.

9 cl, 4 tbl, 8 ex