C9 fuel oil, whose main compositions are single ring aromatic hydrocarbons and single cycloolefins, is a by-product separated from the ethene production process after gasoline hydrogenation, and the distillation range is at 100~200℃, the sulfur content is about 150 ppm.

This paper introduced and compared the processes of catalytic polymerization, thermal polymerization and initiative polymerization for producing C9 petroleum resin; summarized production status and products of C9 petroleum resin abroad; reviewed domestic C9 petroleum resin new processes and developing and modification of polymerization catalyst.

With C9 petroleum resin and bromine as materials, a bromizating C9 petroleum resin was synthesized.

This paper summarized the application of petroleum resin,modification of C9 petroleum resin,hope can increase the production capability and extend the production using scope,expect the researchful direction of the C9 petroleum resin,and outlook of application.

The results showed that synthesis of C 9 petroleum resins using this liquid AlCl 3 as catalyst have good yield and light color.

Producting phenylethene-indene resin by use of petroleum craked by-product C 9 through cutting out fraction,decolor,polymerization,distillation.

A novel C 9-acrylic amphiphilic copolymer has been synthesized by radical polymerization.

The constituents of C_9 fraction of pyrolysis gasoline were analyzed by gas chromatography(GC) with flame ionization detector(FID) and gas chromatography/mass spectrometry(GC/MS).