The cracked C9 fraction mainly contains unsaturated aromatic hydrocarbon compounds such as vinyl toluene, indene, methylstyrene,Petroleum Resin etc. C9 is introduced into the C5 component,Petroleum Resin and the compatibility of the C5/C9 petroleum resin obtained by copolymerization of the two with polar polymers is improved,Petroleum Resin for example It can greatly improve the compatibility with EVA resin. Due to the characteristics of both aliphatic and aromatic resins,Petroleum Resin it has good solubility in a variety of solvents and improves the heat resistance and weather resistance of aliphatic resins.
C5/C9 petroleum resin is produced by reaction at room temperature. Adjusting the compatibility ratio of C5 and C9 can obtain resins with different properties. The higher the ratio of C9,Petroleum Resin the higher the softening point and viscosity of the resin and the lower the bromine price. The production process of C5/C9 copolymer resin,Petroleum Resin except for the need to increase the C9 fraction pretreatment to obtain the applicable C9 fraction,Petroleum Resin the process is roughly the same as the C5 aliphatic petroleum resin.
Hydrogenated petroleum resin: With the wide application of hot melt adhesives and adhesive tapes,Petroleum Resin higher requirements are imposed on the color of petroleum resins,Petroleum Resin especially paper diapers (disposable) and sanitary products require transparent and colorless petroleum resins. Hydrogenated petroleum resin came into being. The hydrogenation of resin is to dissolve the resin in an inert solvent and hydrogenate under liquid phase conditions. The commonly used hydrogenation catalyst is nickel-based catalyst.