Hydrogenation modification, the C9 resin obtained by the polymerization reaction is generally darker,Petroleum Resin brown or brown thermal stability is poor, thus limiting the scope of application,Petroleum Resin through hydrogenation can destroy the unsaturated double bond in the resin, and remove the residual The halogen element,Petroleum Resin the modified resin is colorless and has no special odor. It can also improve its weather resistance, adhesion,Petroleum Resin stability and other properties, and further expand its application fields. Therefore, in recent years, developed countries have focused on developing hydrogenated petroleum resins.
Compared with the raw material monomer hydrogenation, the hydrogenation reaction of petroleum resin is much more difficult, which is determined by the molecular structure of petroleum resin. Since petroleum resins,Petroleum Resin especially aromatic hydrocarbon resins with benzene rings, have relatively large molecular weights,Petroleum Resin polymer molecules stretch on the catalyst surface,Petroleum Resin forming high steric hindrance, which makes the reaction conditions harsh. The production process design and operation conditions of hydrogenated petroleum resin abroad are more stringent. According to the different production scale and product requirements,Petroleum Resin the process can be summarized into three types: slurry state, fixed bed,Petroleum Resin spray tower hydrogenation process .
Copolymerization modification, graft copolymerization is one of the main methods of polymer chemical modification. The research of graft polymer materials mainly includes two directions,Petroleum Resin one is the study of the graft polymer material itself, and the other is the application research of the graft polymer as a compatibilizer to improve compatibility. The former is to analyze the molecular structure,Petroleum Resin connect polymers with various special properties through chemical bonds, and design a highly complex material,Petroleum Resin the so-called polymer molecular design. The grafted polymer can form a microstructure of each component, so According to the multiple functions of the main chain polymer and branched chain polymer,Petroleum Resin it can give full play to its composite characteristics; the latter is to use the compatibilizing ability of the graft polymer as a compatibilizer,Petroleum Resin so as to freely control the polymer blend Compatibility, that is, graft polymer as a compatibilizer for molecular design, Petroleum Resinpreparation of polymer materials. C9 petroleum resin is soluble in a variety of organic solvents such as alkanes,Petroleum Resin aromatic hydrocarbons, esters,Petroleum Resin etc. C9 petroleum resin has strong compatibility.
