Tomas was born in Buenos Aires, Argentina in 1944. At age 24, he left for the United States where he completed his Ph.D. in Chemistry at New York University. At age 30 Tomas went to Germany for a one year job contract at Hoechst AG (now Sanofi), resulting in several USA patents. At age 31, Tomas went to Brazil where he worked for 40 years at AkzoNobel Coatings. In 2016, at age 71, Tomas immigrated to Israel.