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~Characteristic
Featared by acid value, easy mutual solubilities, resistant to water, resistant to ethanol and chemicals, C9 resin has the chemical stabilizing property to acid and alkaline, viscosity adjusting and thermal stabilizing, Generally, the petroleum resins are not used independently, but have to be used together with other kinds of resins as promoters, adjusting agents and modifiers.

Properties and functions of petroleum resins in different application areas
A. paints
　　Paints mainly use C9 petroleum resins, DCPD resins and C5/C9 copolymerized resins with high softening points, petroleum resins are added to paints can increase the final finishes of paints, the adhesiveness of paint films and the hardness. Resistance to acid and alkaline.
B. Rubbers
　　Mainly use C5 petroleum resins, C5/C9 copolymerized resins and DCPD resins with low softening points, these kinds of resins have very good mutual solubilities with natural rubber particles, No affect to the sulphurization of rubber. Rubbers added with petroleum resins will increase the strength, adhesiveness and softening property.
C. Adhesives
　　Petroleum resins have very good adhesiveness, they can increase the adhesiveness of adhesives, resistance to acid, alkaline and water. Subsequently they will reduce the production cost.
D. printing inks
　　Usually, the C9 petroleum resins and DCPD resins which hare high softening point are used for printing inks, they hare color spreading, fast dry and brightening effects and will increase the printing property.
E. Others
　　Petroleum resins have certain unsaturation property and can be used as paper glutting agents, plastic modifiers etc.
　　Petroleum resins are non-hazardous products, however the direct sunshine and rain shall be avoided daring transportation. They can't be transported together with self-flammable materials, strong oxidizers and strong acid.
　　Petroleum resins shall be stored in dry and cool area, the storage period is one year, but they can be used again if they out still up to specifications by inspection after one year.