PVC was accidentally discovered at least twice in the 19th century, first in 1835 by Henri Victor Renault and in 1872 by Eugen Baumann. On both occasions, the polymer appeared as a white solid inside flask of vinyl chloride that had been left exposed to sunlight. In the early 20‘h Century, the Russian Chemist Ivan Ostromislensky and Fritz Klatte of the German Chemical Company Griesheim-Elektron both attempted to use PVC (polyvinyl chloride) in commercial products, but difficulties in processing the rigid, sometimes brittle polymer blocked their efforts. Waldo Semon and the B.F. Goodrich Company developed a method in 1926 to plasticize PVC by blending it with various additives. The result was a more flexible and more easily processed material that soon achieved widespread commercial use.