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Physicochemical properties of petroleum resin

author£ºadmin Date£º2017/1/18 17:21:34

Physical properties: The use of C9 petroleum resin fractions for the production of petroleum resin known as C9 petroleum resin. (C8 ~ C11) from the heavy by-product pyrolysis oil after the separation of benzene, toluene, xylene by the acidic catalyst in the presence of polymerization derived. At room temperature is a glassy thermoplastic solid, with brittle, pale yellow to light brown, the average molecular weight of 500 to 1000. The relative density of 0.97 to 1.06, softening point 40 ~ 1400 ¡æ, glass transition temperature 810¡æ, ignition 2600¡æ above the refractive index of 1.5120. Soluble acetone, methyl ethyl ketone, cyclohexanone, benzene, toluene, ethyl acetate, dichloroethane and dry oil, do not dissolve in water and ethanol. It has good cyclicity, cohesive strength, water resistance, acid and alkali resistance, weatherability and chemical resistance, but it is poor in adhesiveness. It is mixed with alkyd resin, rosin, phenolic resin, coumarone resin, benzene rubber and other good compatibility, but with the natural rubber compatibility slightly worse.

Chemical properties: petroleum resin with its high peel strength, fast viscosity, stable adhesion, moderate melt viscosity, good heat resistance, good compatibility with polymer matrix, and low prices, began to gradually replace the natural resin tackifier (rosin and terpene resin). Petroleum resin in the hot melt adhesive characteristics: good fluidity, can improve the wettability of the main material, good viscosity, outstanding initial viscosity performance. Excellent anti-aging, light color, transparent, low odor, low volatility. In the hot melt adhesive, can be used alone ZC-1288D series as tackifying resin can also be mixed with other tackifying resin used to improve the characteristics of hot-melt adhesives.

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