Mr. Deman was born in1946, Bachelor of Chemical Engineering, Polymer Polymer Engineering.

Mr. Deman has nearly 45 years of experience in the global chemical industry and is an expert in government relationship. He used to be a professor of organic chemistry in University of Algiers and worked in the animal nutrition division of Rhone Poulenc as Director of Operations. Then in 2002, he took part alongside CVC at the leveraged buyout that gave birth to Adisseo. In 2006, he became president of Adisseo at its acquisition by Bluestar till 2010.

He is the Chairman of the management board at Adisseo France and member of the 6th session of the board of directors and strategic advisor for Bluestar Group since 2010. From 2015 to 2018, he was the Chairman of the Company. Since 2015, he has been the Director of the Company.