| Method for Preparing Polyoxymethylene Dimethyl Ethers by Acetalation Reaction of Formaldehyde with Methanol | |
Xia CG(夏春谷) ; Song HY(宋河远); Chen J(陈静); Li Z(李臻)
| |
| 2015-03-24 | |
| Rights Holder | Lanzhou Institutea of Chemical Physics, Chinese Academy of Science |
| Country | 美国 |
| Abstract | It is disclosed a method for preparing polyoxymethylene dimethyl ethers by continuous polymerization and acetalation reactions. The method may include two steps: performing a polymerization reaction of an aqueous formaldehyde solution under catalysis of an ionic liquid IL I to obtain a mixed aqueous solution of trioxymethylene and formaldehyde; and an acetalation reaction of the mixed aqueous solution of trioxymethylene and formaldehyde with methanol is performed under catalysis of an ionic liquid IL II to prepare polyoxymethylene dimethyl ethers. The method may use an aqueous formaldehyde solution as a starting material to prepare polyoxymethylene dimethyl ethers by continuous polymerization and acetalation reactions, achieving a high use ratio of formaldehyde. A film evaporator is used in the invention, realizing a rapid separation and recycling of the light components, with a high separation efficiency. The separation of the catalyst is simple, thereby realizing recycling of the catalyst. |
| Subject Area | 物理化学与绿色催化 |
| Department | OSSO国家重点实验室 |
| Application Date | 2010-05-18 |
| Patent Number | US 8987521 B2 |
| Language | 英语 |
| Status | 授权 |
| Document Type | 专利 |
| Identifier | http://ir.licp.cn/handle/362003/19099 |
| Collection | 羰基合成与选择氧化国家重点实验室（OSSO） |
| Affiliation | Lanzhou Institutea of Chemical Physics, Chinese Academy of Science |
| Recommended Citation GB/T 7714 | Xia CG,Song HY,Chen J,et al. Method for Preparing Polyoxymethylene Dimethyl Ethers by Acetalation Reaction of Formaldehyde with Methanol. US 8987521 B2[P]. 2015-03-24. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| US8987521B2[1].pdf（97KB） | 专利 | 开放获取 | CC BY-NC-SA | View Application Full Text | ||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment