Son of the President of the Bank Urquijo - Juan Lladó Sanchez - and grandson of the republican deputy Jose Lladó Vallés, he took a doctor's degree in Chemical Sciences at the University of Madrid. He is a Member of Honor of the American Chemical Society. He was executive President of the CSIC. In addition, he was appointed in 1976 Minister of Commerce and then, in 1977 Minister of Transport and Communications. Later, in 1979 he was Ambassador of Spain in the United States. He was the first President of the Royal Patronage of the Museo Nacional Centro de Arte Reina Sofía.
