Dual cure polyurea coating composition
AssigneeFreda Incorporated
InventorRichard E. Milhem
Life of this patent
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Abstract
A two component polyurea coating composition that exhibits a dual cure phenomena. The coating composition comprises a polyaspartic ester that is combined together with a polyisocyanate in such a manner that the polyisocyanate is present is an amount that is greater than a normal stoichiometric amount for the polyaspartic ester. By over indexing the polyaspartic ester with the polyisocyanate advantages of moisture curing and or “fast curing” can be combined together in the final finish.
Claims20
A polyurea coating composition that exhibits a dual cure phenomena, said polyurea coating composition comprising:
- a polyaspartic ester;
- and
- a polyisocyanate,
- wherein the polyisocyanate is present in an amount that is greater than a normal stoichiometric amount for the polyaspartic ester.
A method of preparing a polyurea coating composition which comprises:
- providing a polyaspartic ester;
- providing a polyisocyanate;
- and
- mixing the polyaspartic ester and the polyisocyanate together so that the polyisocyanate is present in an amount that is greater than a normal stoichiometric amount for the polyaspartic ester.
A surface finish which comprises a cured composition that includes a polyaspartic ester and a polyisocyanate, wherein the polyisocyanate is present in an amount that is greater than a normal stoichiometric amount for the polyaspartic ester prior to curing.
A method for forming a surface finish which comprises:
- providing a polyaspartic ester;
- providing a polyisocyanate;
- mixing the polyaspartic ester and the polyisocyanate together so that the polyisocyanate is present in an amount that is greater than a normal stoichiometric amount for the polyaspartic ester;
- applying the mixed composition to a surface to form a surface coating;
- and
- allowing the applied surface coating to cure.
Dependencies are inferred from the claim text.