Aromatic resins (C9 resins) are made from C9 hydrocarbon aromatics. Their composition depends on the hydrocarbon raw material (coal tar, crude oil). The softening points of these resins range over a wide range. Compared to C5 resins, they have a higher melt viscosity, are darker in color (dark yellow to brown) and have a higher softening point ranging from about 100 to 150°C. C9 resins are versatile resins that are compatible with many polymers.
