Preservatives for coating compositions

Preservative for coating compositions, which DOLLAR A a) one or more quaternary ammonium compounds and DOLLAR A b) one or more alkalizing agents selected from DOLLAR A alkali metal hydroxide, carbonate, bicarbonate and silicate, alkaline earth metal oxide, carbonate, hydroxide and silicate and Al (OH) ¶3¶ DOLLAR A comprises, as well as conserved coating composition.