Production of Bitumen Modified with Low-Molecular Organic Compounds from Petroleum Residues. 1. Effect of Solvent Nature on the Properties of Petroleum Residues Modified with Folmaldehyde

The possibility of petroleum residues (tar and oxidized bitumen) modification with formaldehyde (37 % aqueous solution) has been studied at the temperature 393±3 K for 3 h in presence organic solvent using hydrochloric acid as a catalyst. Toluene, p-xylene, naphta n-octane were used solvents amount 0–40 wt relative to initial material. By means IR spectroscopy resin-like compounds affecting operational properties have detected. These are formed result reaction residue components molecules.