We address the special formalism of a recent Brownian relativity to study the spacetime universal exponents arising in liquid solutions of real polymer coils (i.e., chain molecules provided with volume interactions). Intrinsic viscosity is discussed being the quantity playing the role of a (modified) Lorentz factor, well describing the spacetime scaling in single real chains once interaction and contour length scales are accounted for. The found scaling laws agree with the universal exponents of size, time and intrinsic viscosity, and predict the Kirkwood relation and the Flory coil state. (C) 2005 Elsevier B.V. All rights reserved.