Alkyd emulsions for air-drying or stoving finishes - contg reaction prod of similar alkyd and polyethylene glycol as emulsifier

摘要: Aqueous emulsions of alkyd resins for air-drying or oven-drying enamels are prepd. by dispersing the in H2O at 80 degrees - 90 C opt. 100 under press, contg. 0.1-3% an organic inorganic nitrogeneous base with help 10-50%, calculated on total binder, emulsifying resin from alkyd, similar to same as that be dispersed, reaction 40-70%, resin, a polyethyleneglycol (PEG) blocked unilaterally MeO gps, and having 6-100 (pref. 10-70) ethyleneoxide units per mol. Stable alkyds were previously obtainable use PEG-modified NH3, but these became unstable addn. amino phenolic crosslinking agents adversely affected basic pigments, so great care grinding was needed avoid coagulation. New invention have improved stability towards components pigments can also used stoving finishes.