摘要:
A process for the production of cationic paint binders which are particularly suitable for formulating pigment pastes for cathodically depositable electrocoating paints is described. The paint binders produced according to the invention are modified epoxy resin-amine adducts which contain organically-chemically bonded titanium. The cured paint films provide excellent corrosion protection on non-pretreated sheet steel even in the absence of lead-containing compounds and/or lead pigments.
摘要:
THE CURE RATE OF EPOXY RESIN CONTAINING 1,2 EPOXY GROUPS AND HAVING MORE THAN ONE EPOXIDE GROUP PER MOLECULE CAN BE CONTROLLABLY VARIED BY THE UTILIZATION OF A HARDENER COMPRISING A MIXTURE OF A PHENOL AND AN ORGANIC TITANATE CONTAINING ONLY TITANIUM-OXYGEN PRIMARY VALENCE BONDS WHEREIN THE PHENOL IS PRESENT IN QUANTITIES LESS THAN 15% BY WEIGHT OF THE EPOXY RESIN, AND THE ORGANIC TITANATE IS PRESENT IN QUANTITIES LESS THAN 10% BY WEIGHT OF THE EPOXY RESIN.
摘要:
A primer composition, comprising:(A) an organosilicon compound having in its molecule i) at least one hydrogen atom bonded to a silicon atom and ii) at least one group selected from silicon-bonded alkoxy groups and silicon-bonded and epoxy group-containing organic groups; and (B) an organic titanium compound. This composition can achieve a durable adhesion even under severe conditions as in high-temperature air, high-temperature water vapor, and high-temperature oil.