Patent ID: 11932774
Assignee: THE UNIVERSITY OF AKRON
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 11:
12. A method for preparing waterborne non-isocyanate polyurethane epoxy hybrid coating composition, the method comprising:
combining a waterborne non-isocyanate amine-terminated polyurethane polymer and a waterborne epoxy chain extender to form a waterborne non-isocyanate polyurethane epoxy hybrid coating composition; and
wherein the waterborne amine-terminated non-isocyanate polyurethane polymer is prepared by a method comprising:
preparing an amine-terminated non-isocyanate polyurethane prepolymer by reacting a cyclic carbonate component, a tertiary amine functional component, and, optionally, a primary amine functional component, to form an amine-terminated non-isocyanate polyurethane prepolymer;
neutralizing the prepolymer; and
dispersing the neutralized prepolymer in water to form a waterborne amine-terminated non-isocyanate polyurethane.