Pat Alley turns in his chair towards me in a meeting room in Dublin. The entrepreneur has been under siege for the last three years, and, over the course of the previous hour, Alley has recounted how he has fought to keep his business, Trifol Resources, going. “I didn’t expect it to be so challenging,” he admits. “It was an unexpected test.”  The challenges faced by Trifol have been numerous, including patent challenges and management and shareholder disagreements. Meanwhile, the company has been attempting to raise funds for a pioneering process that turns waste plastics into a wax that can…