Pentaerythritol → rosin PE
반응식
[CH:1]1[CH:6]=[CH:5][C:4](/[CH:7]=[CH:8]/[CH2:9][O:10][C@@H:11]2[O:16][C@H:15]([CH2:17][OH:18])[C@@H:14]([OH:19])[C@H:13]([OH:20])[C@H:12]2[OH:21])=[CH:3][CH:2]=1.[OH:22][CH2:23][C:24]([CH2:29][OH:30])([CH2:27][OH:28])[CH2:25][OH:26]>>[CH:1]1[CH:2]=[CH:3][C:4](/[CH:7]=[CH:8]/[CH2:9][O:10][C@@H:11]2[O:16][C@H:15]([CH2:17][OH:18])[C@@H:14]([OH:19])[C@H:13]([OH:20])[C@H:12]2[OH:21])=[CH:5][CH:6]=1.[OH:22][CH2:23][C:24]([CH2:29][OH:30])([CH2:27][OH:28])[CH2:25][OH:26]참가 물질
3
반응 조건
- 온도
- 220 °C
실험 절차
To a suitable reactor are introduced 500 parts of WW rosin which is then heated under nitrogen to 220° C. Thereafter, 67.5 parts of technical pentaerythritol (PE) are added. The temperature is next raised to between 270° C. and 275° C., and stirred for one hour, at which time the acid number is found to be equal to 103. A catalyst, namely, 0.25 part of p-touenesulfonic acid is then added to the reaction mixture. The reaction temperature is maintained for a total of 11 hours at 275° C. At the end of this period, esterification had been found to be substantially completed, producing a rosin/PE ester having an acid number equal to 13, an N color, and an 84° C. Ring and Ball softening point.