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Technology of Hydrogenated Petroleum Resin

author£ºadmin Date£º2017/1/6 17:36:17

Raw materials: The base petroleum resin used for hydrogenation may be a C5 aliphatic petroleum resin [mixed C5, decoupled C5, meta-pentadiene and dicyclopentadiene (DCPD) resin, etc.], or a C9 aromatic petroleum resin. Which can be divided into five categories: (1) mixed C5 petroleum resin, the initial separation (or without separation) of the mixed C5 fractions; (2) aliphatic C5 petroleum resin to concentrate pentadiene (concentration 50% 70%) as the main component; (3) alicyclic C5 petroleum resin with DCPD as the main raw material; (4) copolymer resin, can be divided into C5 /C9 copolymer resin, other material copolymer resin and DCPD; (5) C9 aromatic petroleum resin which is prepared by cationic polymerization of C9 fraction, which is a by-product of the steam cracked ethylene plant, and has a softening point of 80 to 150 DEG C, in which two stages of polymerization (C9 dicyclopentadiene Content <15%) or secondary polymerization (dicyclopentadiene content> 15%) to obtain the color of petroleum resin than one-step low 2 to 3].

Japanese researchers mainly use DCPD resin and C9 aromatic petroleum resin as the base resin, the production of hydrogenated petroleum resin; American researchers are mainly use DCPD resin or aromatic modified crude C5-based petroleum resin as raw material, the production of hydrogenation petroleum resin; Some researchers used mixed C5 resin or de-C5 resin as raw material, the production of liquid or semi-solid adhesive with hydrogenated petroleum resin (the resin color is light, the effect of good viscosity). At present, the domestic C5 petroleum resin is usually used as the preparation of hydrogenation main raw material of petroleum resin.

Hydrogenation petroleum resin technology in abroad began in the late 1960s, its rapid development in the 80's and 90's, more representative of ExxonMobil, Eastman Chemical Company, Rui urn company, Arakawa Chemical Industry Companies and so on. As a result of the relatively large molecular weight of Mr, the polymer molecules on the surface of the catalyst (chain-like and ring-like structure) formed a high degree of steric hindrance, resulting in a relatively high activation energy of the unsaturated bond hydrogenation reaction, So hydrogenation reaction conditions are harsh (need high temperature, high pressure and high activity catalyst conditions).