Petroleum resin (hydrocarbon resin) is a petroleum by-product of pyrolysis of C5 and C9 fractions, preprocessed, aggregated a thermoplastic resin, distillation and other processes, it is not a polymer, but molecular weight oligomer 300-3000.
Petroleum resin is so named because sources for oil derivatives, it has a low acid, solubility good, water resistance, ethanol resistance and chemical resistance properties, stable to acid-base chemistry, and adjust viscosity and thermal stability characteristics. Petroleum resin not only use, but as promoter, regulator, modifiers, and other resins are used together.
General class C5 aliphatic petroleum resin (lipid species), the C9 aromatic (aromatic hydrocarbons), and DCPD-(FAT Diene, cycloaliphatic) and pure monomer (such as poly SM,AMS (alpha methyl styrene) and other products), four type, consisting of molecules are the hydrocarbons, it is also called a hydrocarbon resin (hydrocarbon resins,HCR).
Depending on the raw material into aliphatic petroleum resin resin (C5) and cycloaliphatic resin (DCPD), aromatic resins (C9), aromatic/aliphatic resin (C5/C9) and hydrogenated petroleum resin. C5 hydrogenated petroleum resin, C9 hydrogenated petroleum resin