  We investigate an extension of the standard model with a second Higgs
doublet, showing a two stage phase transition. Wash-out of a baryon asymmetry
after the phase transition can be easily avoided in this class of models. B+L
transitions are more strongly suppressed in the intermediate phase than in the
high temperature symmetric phase,however. Therefore, it becomes more difficult
if not impossible to generate a sufficient baryon asymmetry during the phase
transition.
