| New Process for Synthesis of Antioxidant TMQ Catalyzed by Solid Acid Catalyst SCT-A |
| Received:August 28, 2019 Revised:August 28, 2019 |
| DOI：10.12136/j.issn.1000-890X.2019.10.0772 |
| Key Words: catalyst SCT-A；antioxidant TMQ；synthesis；process |
| Author Name | Affiliation | E-mail | | CHEN Xinmin* | Sinochem International Corporation | david.chen@sinorgchem.com | | LI Qinghua | Sennics Co. ，Ltd | |
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| Abstract: |
| A new process for the synthesis of antioxidant TMQ catalyzed by solid acid SCT-A was
studied. The suitable process conditions for the condensation reaction and polymerization reaction were as
follows：mass fraction of the condensation reaction catalyst SCT-A 0. 15，condensation reaction temperature
135 ～ 140 ℃，condensation reaction time 6 ～ 7 h，and polymerization reaction time 6 h. Under these
process conditions，the mass fraction of the dimer of antioxidant TMQ obtained by production was about 0. 45，
and the total mass fraction including dimer，trimer and tetramer was above 0. 80. The catalyst SCT-A could
be reused many times，and the amount of wastewater could be reduced by more than 90%. |
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