Tennant Company

Robert J Tweedy, Jr

Joseph S Keute

Anne-Marie Thunnissen

Kevin K Hobbie

Christopher B Adams

Vikki K Young

Machines and methods for curing ultraviolet (UV)-curable coating materials. In one embodiment, the machine includes a UV radiation source having one or more lamps partially enclosed within a shroud of a curing head. The machine may further include a supplemental energy source located outside of the shroud. The supplemental energy source may illuminate an uncured area of the floor coating material that is beyond the curing head. In some embodiments, the supplemental energy source may reduce or prevent the partial curing of the coating material outside of the curing head resulting from stray UV energy.

Ultraviolet curing system including supplemental energy source

Amine-terminated urethane oligomer compositions are described that include very high oligomer concentrations. The compositions are melts of the amine-terminated oligomers. The compositions can include one or more property modifiers. The compositions are useful in the formation of crosslinked copolymers, especially with epoxy resins. The resulting copolymers are useful in the formation of coatings.

Growing community of inventors

Coon Rapids, MN, United States of America

Robert J Tweedy, Jr