There are two main ways of modification. One is hydrogenation modification,Petroleum Resin which adds the double bond in the petroleum resin molecule,Petroleum Resin thereby improving its color and anti-oxidation stability. Petroleum resins with special properties can be prepared by adding polar groups or modifiers such as monoolefin to the raw materials.
The cracked C9 fraction mainly contains unsaturated aromatic hydrocarbon compounds such as vinyl toluene, indene, methylstyrene,Petroleum Resin etc.
The preparation process of C9 petroleum resin is as follows: the raw materials are pretreated to remove (bis) cyclopentadiene and isoprene,Petroleum Resin to obtain raw materials with a mass fraction of more than 50%,Petroleum Resin and then add a diluent aromatic hydrocarbon under the protection of nitrogen,Petroleum Resin Then add the catalyst AlCl3.
The development status of C9 petroleum resin production at home and abroad: the development of petrochemical industry provides rich and cheap raw materials for the production of petroleum resin,Petroleum Resin so the production of petroleum resin in some petrochemical developed countries is developing rapidly.
C9 petroleum resin is a thermoplastic resin produced by cracking the by-product C9 fraction of ethylene production unit as the main raw material,Petroleum Resin polymerizing it in the presence of a catalyst,Petroleum Resin or copolymerizing it with aldehydes, aromatic hydrocarbons, terpenes. Its molecular mass is generally less than 2000,Petroleum Resin softening point is less than 150 ℃, Petroleum Resin it is a thermoplastic viscous liquid or solid.
Petroleum resin is named because it is derived from petroleum derivatives. It has the characteristics of low acid value,Petroleum Resin good miscibility, water resistance,Petroleum Resin ethanol resistance and chemical resistance. It is chemically stable to acids and bases and has good viscosity and thermal stability. Features. Petroleum resins are generally not used alone,Petroleum Resin but as accelerators, regulators, modifiers and other resins.
