发明名称 |
PROCESS FOR THE PRODUCTION OF ETHYLENE GLYCOL |
摘要 |
A process for preparing alkylene glycols including reacting an alkylene oxide with water in the presence of a combination of additives and an anion exchange resin, wherein the combination of additives comprises carbon dioxide and an organic or inorganic base provided in an amount sufficient to maintain a pH of the reaction mixture between about 5.0 and 9.0, with the proviso that, when the base is bicarbonate or carbonate, then the anion exchange resin is a trimethyl benzyl ammonium anion exchange resin. A particularly preferred method of this invention is to react ethylene oxide with water in the presence of a halogenate or bicarbonate-type anionic exchange resin (such as a DOWEX TM MSA-1 type resin), carbon dioxide, and sodium hydroxide. Some advantages of this invention are that it provides desirable catalyst lifetime and activity, minimizes resin swelling, and provides a desirable, sustained selectivity to alkylene glycol. |
申请公布号 |
EP1040091(A1) |
申请公布日期 |
2000.10.04 |
申请号 |
EP19980962949 |
申请日期 |
1998.12.08 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
STRICKLER, GARY, R.;LANDON, VON, G.;LEE, GUO-SHUH, JOHN;RIEVERT, WILLIAM, J. |
分类号 |
B01J31/08;C07B61/00;C07C29/10;C07C31/20 |
主分类号 |
B01J31/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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