Method for hydrogenating hydrocarbon resin
A technology of hydrocarbon resin and hydrogenation reaction, which is applied in the field of hydrogenation of hydrocarbon resin, can solve the problems of poor thermal stability and not necessarily sufficient improvement effect, and achieve effective color tone, heat resistance and low odor
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Embodiment 1
[0099] A mixture of 49.5 parts of cyclopentane and 12.4 parts of cyclopentene was added to a polymerization reactor, and after heating up to 60° C., 0.7 parts of aluminum chloride was added to obtain a mixture A1. Next, 54.1 parts of 1,3-pentadiene, 15.3 parts of isobutylene, 1.8 parts of styrene, 15.2 parts of cyclopentene, 1.2 parts of C 4 -C 6 Unsaturated hydrocarbons, and 9.8 parts of C 4 -C 6 Saturated hydrocarbon mixture B1 and 0.4 parts of tert-butyl chloride were kept at 60°C for 60 minutes through separate lines, and polymerized while continuously adding to the polymerization reactor containing mixture A1 obtained as described above. . Thereafter, an aqueous sodium hydroxide solution was added to the polymerization reactor to terminate the polymerization reaction. A precipitate generated due to termination of polymerization was removed by filtration, thereby obtaining a polymer solution containing a hydrocarbon resin before hydrogenation, unreacted monomers, and t...
Embodiment 2
[0104] Using the hydrocarbon resin before hydrogenation obtained in the same manner as in Example 1, the temperature at the time of introducing hydrogen into the multi-tubular heat exchange type hydrogenation reactor was changed from 190°C to 220°C. Except having continuously introduced and performed hydrogenation reaction in the state maintained at 220 degreeC, it carried out similarly to Example 1, and obtained the hydrogenated hydrocarbon resin. In addition, when the melt viscosity of the hydrocarbon resin before hydrogenation was measured in a state heated to 220° C. in the same manner as in Example 1, it was 200 mPa·s. In addition, in Example 2, the residence time in the reaction tube was set to 1.5 hours, and the number of circulations was set to one time. Then, the obtained hydrogenated hydrocarbon resin was evaluated in the same manner as in Example 1. The results are shown in Table 1.
Embodiment 3
[0106] Using the hydrocarbon resin before hydrogenation obtained in the same manner as in Example 1, the temperature at the time of introducing hydrogen into the multi-tubular heat exchange type hydrogenation reactor was changed from 190°C to 240°C. The hydrogenation reaction was carried out in the same manner as in Example 1 except that the hydrogenation reaction was carried out in the same manner as in Example 1, except that the hydrogenation reaction was carried out continuously while maintaining the state of 240° C., and a hydrogenated hydrocarbon resin was obtained. In addition, when the melt viscosity of the hydrocarbon resin before hydrogenation was measured in a state heated to 240° C. in the same manner as in Example 1, it was 180 mPa·s. In addition, in Example 3, the residence time in the reaction tube was set to 0.5 hour, and the number of circulation was set to one time. Then, the obtained hydrogenated hydrocarbon resin was evaluated in the same manner as in Exampl...
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