HARDENERS FOR EPOXY RESIN COATINGS

摘要

Hardener comprises at least one amine compound (I) : Hardener comprises at least one amine compound of formula (A-[NH-CH(R)-X] a) (I). A : polyethylene imine with a molecular weight of 300-5000 g/mole after removing of a primary aliphatic amino group; R : H or 1-12C-alkyl; a : 1-50; and X : 1-20C-hydrocarbyl optionally having OH, mercapto, ether, ester, pyridino or amino. Independent claims are included for: (1) preparing the hardener comprising reductive alkylation of a polyethylene imine with at least one carbonyl compound of formula (R-C(=O)-X) (IV) and/or (R-C(=O)-X1a) (IVa); and (2) a composition comprising at least one epoxide resin and the hardener. X1a : nitro-substituted 6-12C-aryl.