C5/C9 petroleum resin modification technology is applied in all aspects of our lives

C5/C9 petroleum resin is a kind of functional polymer with great application prospects, and it will become the new mainstream of petrochemical applications in my country.

Hydrogenation modification

The C9 resin obtained by the polymerization reaction is generally darker in color, brown or brown with poor thermal stability, which limits the scope of application. Hydrogenation can destroy the unsaturated double bonds in the resin and remove residual halogen elements. The modified resin is colorless and has no special odor. It can also improve its weather resistance, adhesion, stability and other properties, and further broaden its application fields. Therefore, in recent years, developed countries have focused on the development of hydrogenated petroleum resins. Compared with the hydrogenation of the raw material monomer, the hydrogenation reaction of petroleum resin is much more difficult, which is determined by the molecular structure of petroleum resin. Because petroleum resins, especially aromatic petroleum resins with benzene rings, have a relatively large molecular weight, polymer molecules stretch on the surface of the catalyst, forming high steric hindrance, and making the reaction conditions harsh. Foreign countries have strict requirements on the production process design and operating conditions of hydrogenated petroleum resin. According to the different production scale and product requirements, the process can be roughly classified into three types: slurry, fixed bed, and spray tower hydrogenation process .

Copolymerization modification

Graft copolymerization is one of the main methods of chemical modification of polymers. The research of grafted polymer polymer materials mainly includes two directions, one is the study of grafted polymer materials themselves, and the other is the application research of grafted polymers as compatibilizers to improve compatibility. The former is to analyze the molecular structure and connect polymers with various special properties through chemical bonds to design highly complex materials, the so-called polymer molecular design. Grafted polymers can form the microstructure of their respective components. According to the multiple functions of the main chain polymer and the branched polymer, it can give full play to its composite characteristics; the latter is to use the compatibilizing ability of the grafted polymer to be used as a compatibilizer to freely control the polymer blend Compatibility, that is, the graft polymer is used as a compatibilizer for molecular design to prepare polymer materials. C9 petroleum resin is soluble in a variety of organic solvents such as alkanes, aromatic hydrocarbons, and esters. C9 petroleum resin has strong compatibility.