By David Reed, UT EditorLondon-July 1 was the official birthday of Chemtura, the new name for the entity combining the activities of Crompton Corp and Great Lakes Chemicals Co.According to a 30 June press release, Chemtura will be the world's largest plastics additives company and one of America's largest speciality chemical companies. The colours used in the firm's logo represent Chemtura's environmental commitment, and its graphic signature symbolises the synergy between the company and its customers, the release added."