Rhône-Poulenc

Rhône-Poulenc () was a French chemical and pharmaceutical company founded in 1928. In 1999, it merged with Hoechst AG to form Aventis. As of 2015, the pharmaceutical operations of Rhône-Poulenc are part of Sanofi and the chemicals divisions are part of Solvay group and Bayer Crop Science.

==History== thumb|alt=Founder's stock certificate of the Société des Usines Chimiques Rhône-Poulenc for 100 francs, issued on 5 September 1928 in Paris, with the signature of Hippolyte-Eugène Boyer as Chairman of the Supervisory Board|Founder's stock certificate of the Société des Usines Chimiques Rhône-Poulenc for 100 francs, issued on 5 September 1928 in Paris, with the signature of Hippolyte-Eugène Boyer as Chairman of the Supervisory Board The company was founded in 1928 through the merger of Société des usines chimiques du Rhône (Society of Rhône Chemical Factories) from Lyon and Poulenc Frères (Poulenc Brothers) from Paris founded by Étienne Poulenc, a 19th-century Parisian apothecary and brought to prominence by his second and third sons Émile, father of composer Francis Poulenc, and Camille Poulenc (1864–1942). Établissements Poulenc Frères had purchased May & Baker in 1922, the latter continuing to trade under its original name until 1990.