Method for synthesizing polyoxymethylene dimethyl ethers by ionic liquid catalysis
US8344183B2 · kind B2 · utility
2Cited by
3References
5Claims
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Key dates
| Filing date | Aug 27, 2009 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Feb 12, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C41/50
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention discloses a method for synthesizing polyoxymethylene dimethyl ethers by ionic liquid catalysis. The method comprises synthesizing polyoxymethylene dimethyl ethers by using a functional acidic ionic liquid as catalyst and using methylal and trioxymethylene as reactant under a relative mild reaction condition. The invention has advantages of high catalyst activity and reaction conversion, simple reaction process, high operationability and controllability, as well as good product distribution and high raw material utilization ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.