Hydrogenated styrene-conjugated diene copolymer as well as preparation method and application thereof in self-adhesive films

[0063] Preparation of hydrogenated styrene-conjugated diene copolymer:

[0064] Add 3 liters of pure cyclohexane (water value <20ppm), 21mL styrene, 6.5mL regulator (furan) into a 5-liter polymerization kettle purified by nitrogen, start stirring, raise the temperature to 45-55°C, add the initiator Butyllithium (or sec-butyllithium), react for 30min, then add 400mL butadiene, react for 50min, control the maximum temperature not to exceed 65°C, then add 21mL styrene, react at 60-65°C for 30min, finally add 18mL iso Pentadiene, reacted for 20min. After the polymerization reaction is completed, the glue solution is introduced into a 5-liter hydrogenation tank, the temperature is raised to 70°C, a hydrogenation catalyst is added, the hydrogenation pressure is 0.8-1.5Mpa, and the hydrogenation reaction lasts for 120 minutes. After the hydrogenation reaction is completed, the reaction is terminated, the glue solution is purified, the material is discharged, an antioxidant is added,...

[0071] Preparation of hydrogenated styrene-conjugated diene copolymer:

[0072] Add 3 liters of pure cyclohexane (water value<20ppm), 21mL styrene, 6.5mL regulator (tetrahydrofurfuryl alcohol ethyl ether), 1mL furan into the 5 liter polymerization kettle purified by nitrogen, start stirring, and heat up to 45 ~55°C, add initiator n-butyllithium (or sec-butyllithium), react for 30min, then add 400mL butadiene, react for 50min, control the maximum temperature not to exceed 65°C, then add 21mL styrene, at 60~65°C ℃ for 30 minutes, and finally add 20 mL of butadiene, and react for 20 minutes. After the polymerization reaction is completed, the glue solution is introduced into a 5-liter hydrogenation tank, the temperature is raised to 70°C, a hydrogenation catalyst is added, the hydrogenation pressure is 0.8-1.5Mpa, and the hydrogenation reaction lasts for 120 minutes. After the hydrogenation reaction is completed, the reaction is terminated, the glue solution is purified, the mat...