Patent ID: 8846827

Claim:
An epoxy-polysiloxane polymer coating composition comprising: water; a polysiloxane having the formula where, (a) each R 1 is independently selected from a hydroxy group or an alkyl, aryl, or alkoxy group having up to six carbon atoms, (b) each R 2 is independently selected from hydrogen, or an alkyl or aryl group having up to six carbon atoms, and (c) n is selected so that the molecular weight for the polysiloxane is 400 to 10,000; a non-aromatic epoxide resin having more than one 1,2-epoxide group per molecule with an epoxide equivalent weight of 100 to 5,000; and a cure system comprising a blend comprising at least one trialkoxy functional aminosilane and at least one amino functional polysiloxane resin, where the blend has an alkoxy content of 10% by weight to 25% by weight.