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Introduction of Petroleum Resin

author£ºadmin Date£º2016/12/6 18:22:10

Petroleum resins are derived from petroleum derivatives and are generally classified as C5 alphatic, C9 aromatic, DCPD and cycloaliphatic, Monomer (such as poly SM, AMS (alpha methyl styrene) and other products) and other four types, the composition of molecules are hydrocarbons, it is also known as hydrocarbon resins (hydrocarbon resins, HCR). Petroleum resin and cumaran-indene resin, rosin resin and polyterpene and other petrochemical products are the main purpose for the use of tackifiers, it is also known as tackifier resins. Petroleum resin is a generic term, which refers to the low molecular weight (number average molecular weight Mn is less than 2000) of the thermoplastic polymer, is derived from pyrolysis gasoline fractions obtained by heat or catalyst polymerization.

The properties of petroleum resin from viscous liquid to solid, color from water white to dark brown. There are also some modified products, such as C5 /C9 (mixed aliphatic and aromatic hydrocarbons), phenol, terpene and other modified C9 petroleum resin and hydrogenated petroleum resin.

Although the categories of petroleum resin are divided into four, but the manufacturing methods are roughly the same, except for some DCPD resin to heat polymerization system, the rest are cationic polymerization method, commonly used catalyst for BF3, AlCl3 Friedel-Crafts acid, will add a little accelerator. Cation polymerization characteristics of the reaction rate, chain transfer complex, the catalyst for the impurity easily in the raw materials or molecular structure and other factors affect the termination of the reaction, it can be polymerized into a molecular weight of 500 ~ 2,000 polymer, and enhance the viscosity.