Single phase systeme based on coreactive copolymers

摘要

Monocomponent system which can be thermally crosslinked without formalin is based on aqueous dispersion containing 10-70 wt.% particles of diameter 50-500 nm, and at least one polymer comprising polymer containing groups from monomer M1 which has (masked) aldehyde or acetal groups, and polymer containing groups from monomer M2 which has alkylol acrylamide groups. Both types of polymer contain groups from monomer M3 which do not react with those from M1 and M2. Also claimed is crosslinked film containing coating e.g. paint, varnish or adhesive, which is used in treatment of materials such as paper or wood and which is obtained by coalescence of said system.