SILICONE POLYUREA

摘要

Novel polyurea siloxane coating compositions are contemplated, the compositions being the reaction products of isocyanate prepolymers and resin blends, with the resin blends containing siloxane copolymers in addition to conventional polyurea monomer and polymer resin reactants. Specifically, it has been found that reaction products having superior gloss retention, water resistance, temperature resistance, and chemical resistance may be formed from isocyanate prepolymers and resin blends having various amounts of poly[(3-aminopropyl)methylsiloxane-co-diphenylsiloxane] in addition to aromatic and/or aliphatic polyamines.

主权项

1. A polyurea siloxane coating composition comprising the reaction product of an isocyanate prepolymer and a resin blend, the resin blend comprising:
poly[(3-aminopropyl)methylsiloxane-co-diphenylsiloxane]; one or more aromatic diamines; one or more bifunctional polyetheramines; and one or more trifunctional polyetheramines.