The physical and chemical properties of C9 petroleum resin

oday we are introducing the physical and chemical properties of petroleum resin

Physical properties: Petroleum resin produced by using C9 fraction in petroleum as raw material is called C9 petroleum resin. It is obtained by polymerizing the remaining fractions (C8~C11) after separating benzene, toluene, and xylene from heavy by-product pyrolysis oil in the presence of an acidic catalyst. It is a glassy thermoplastic solid at room temperature, brittle, light yellow to light brown, average molecular weight 500~1000, relative density 0.97~1.06, softening point 40~1400C, glass transition temperature 810C, ignition point above 2600C, refractive index 1.5120 C. It is soluble in **, methyl ethyl ketone, cycloethyl ketone, benzene, toluene, ethyl acetate, dichloroethane and drying oil, but insoluble in water and ethanol. It has a cyclic structure, strong cohesion, good water resistance, acid and alkali resistance, weather resistance and chemical resistance, but poor adhesion. It is compatible with alkyd resin, rosin, phenol resin, coumarone resin, butadiene resin The compatibility of benzene rubber, etc. is good, but the compatibility with natural rubber is slightly poor.

Chemical properties: Petroleum resins are gradually beginning to be gradually peeled due to their high peel bonding strength, good fast tack, stable bonding performance, moderate melt viscosity, good heat resistance, good compatibility with polymer matrix, and low price. Replace natural resin tackifier (rosin and terpene resin). The characteristics of petroleum resin in hot melt adhesive: good fluidity, can improve the wettability of the main material, good viscosity, and outstanding initial adhesion performance. Excellent aging resistance, light color, transparent, low odor, low volatile matter. In hot melt adhesives, ZC-1288D series can be used alone as tackifying resins, or mixed with other tackifying resins to improve certain characteristics of hot melt adhesives.

Petroleum resin has good tackifier, compatibility, thermal stability and light stability, and can improve the adhesive performance of tackiness. It is an indispensable tackifier component for many adhesives. Widely used in hot melt, pressure-sensitive adhesive, construction and decoration, automobile assembly, tires, commodity packaging, book binding, sanitary products, shoemaking, hot-melt road marking paint, colored asphalt and other industries.