Process for producing perfluorodiacyl fluorinated compounds
US7501540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2007 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Jul 16, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/31
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a process for producing compounds useful as raw materials for various fluororesins in high yields in few steps from inexpensive and readily available starting materials.The following compound (1) and the following compound (2) are reacted to form the following compound (3), then the compound (3) is fluorinated in a liquid phase to form the following compound (4), and the ester bonds in the compound (4) are dissociated to form the compound (5), or the compound (5) and the compound (6).HOCH2-Q-O—(CH2)3—OH (1),CRBCOX (2),RBCOOCH2-Q-O—(CH2)3—OCORB (3),RBFCOOCF2-QF-O—(CF2)3—OCORBF (4),FCO-QF-O—(CF2)2—COF (5),RBFCOF (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.