Acid modification C5 petroleum resin and molecular weight controllable preparation method thereof
A technology of petroleum resin and acid modification, which is applied in the field of acid-modified C5 petroleum resin and its molecular weight controllable preparation, which can solve the problems of difficult to meet the use requirements and narrow molecular weight adjustment range, and achieve easy operation, simple method and control range wide effect
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[0030] The molecular weight controllable preparation method of a kind of acid-modified C5 petroleum resin of the present invention, take decyclized C5 compound, piperylene, recovered piperylene, monoolefin, styrene and derivatives of styrene as main raw materials , Prepare the base resin by polymerization reaction, and then use maleic anhydride as the graft toughening agent to carry out graft treatment to obtain the acid-modified C5 petroleum resin. The concrete steps of acid modified C5 petroleum resin in the present invention are:
[0031] 1) Accurately weigh each reaction raw material according to a certain ratio, and dissolve it in solvent oil; wherein decyclized C5 compound, piperylene, reclaimed piperylene, monoolefin, styrene and styrene derivative The mass ratio of solvent to solvent oil (1-150): (1-60): (1-150): (1-80): (0-60): (100-200).
[0032]In the prior art, the molecular weight of the petroleum resin product is usually adjusted by adjusting the process paramet...
Embodiment 1
[0037] Weigh respectively 130g of decyclized C5 compound, 60g of piperylene, 90g of recovered piperylene, 20g of monoolefin, and 50g of styrene and dissolve them in 150g of solvent oil; then add the reaction materials into the cold polymerization reactor And stir evenly, control the reaction temperature of polymerization at 60°C, and control the reaction time at 2 hours. After the reaction is completed, the polymerized reaction product is stripped to recover solvent oil to obtain the base resin; finally, the base resin is grafted with maleic anhydride Toughening agent, the final product acid-modified petroleum resin is obtained by melting grafting and washing with water. The measured molecular weight Mz of the base resin is 6500, and the softening point is 90°C. The molecular weight Mz of the final product is 9100, and the softening point is 100°C.
Embodiment 2
[0039] Weigh respectively 150g of decyclized C5 compound, 60g of piperylene, 60g of recovered piperylene, 30g of monoolefin, and 30g of styrene and dissolve them in 170g of solvent oil; then add the reaction materials into the cold polymerization reactor And stir evenly, control the reaction temperature of polymerization at 70°C, and control the reaction time at 2 hours. After the reaction is completed, the polymerized reaction product is stripped to recover solvent oil to obtain the base resin; finally, the base resin is grafted with maleic anhydride Toughening agent, the final product acid-modified petroleum resin is obtained by melting grafting and washing with water. The measured molecular weight Mz of the base resin is 9800, and the softening point is 99° C., and the molecular weight Mz of the final product is 14,600, and the softening point is 110° C.
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