A chemical tanker collided with a large bulk carrier in waters off the coast of France on Friday, a spokesman for the company that manages the chemical tanker said.The crew was evacuated and the leakage from the chemical carrier has stopped, the spokesman said.The collision between the tanker — named YM Uranus — and the bulk carrier occurred off the coast of the northwestern French city of Brest, said Patrick Adamson, the spokesman.The tanker was carrying 6,000 tons of solvent, officials said.French authorities had boarded the vessel and there seemed to be no environmental threat, Adamson said