US Patent 11254819 Curing agent mixture

A curing agent mixture is for coatings that cure at room temperature. The curing agent mixture can include (A) 10-60% by weight, preferably 20-60% by weight, more preferably 30-50% by weight, of a polysiloxane, (B) 40-90% by weight, preferably 40-80% by weight, more preferably 40-70% by weight, of an amino-functional alkoxysilane and (C) 1-10% by weight, preferably 2-7% by weight, more preferably 3-5% by weight, of a guanidine compound. The stated amounts of components (A), (B), and (C) add up to 100% by weight and are based on the curing agent mixture.