Catalyst for C9 Fractions Hydrogenation
C9 petroleum resin is a thermoplastic polymer produced by the polymerization of the C9 fraction (mainly vinyl toluene and indene from PyGas). The dark color of C9 petroleum resin after preparation is due to the presence of aromatic rings and alkene structures. When the unsaturated bonds
in C9 petroleum resin are hydrogenated, the resulting hydrogenated C9 petroleum resin is typically colorless, transparent, and stable, with improved physical properties.
Catalytic hydrogenation is commonly employed to modify C9 petroleum resin for broader industrial applications. The purpose of catalytic hydrogenation is to remove ethylenic C=C bonds, aromatic rings, and residual halides formed during the polymerization process.