Process for the manufacture of polyfluoroalcohols and their use

• US 3,927,126 A
• Filed: 02/16/1973
• Issued: 12/16/1975
• Est. Priority Date: 02/22/1972
• Status: Expired due to Term

• Current Assignee: Helmut Huber-Emden
• Original Assignee: Helmut Huber-Emden
• Inventors: Huber-Emden, Helmut
• Primary Examiner(s): Mars, Howard T.
• Application Number:
  US05/333,246
• Time in Patent Office: 1,033 Days
• Field of Search: 260/633,973,983
• US Class Current: 568/842
• CPC Class Codes: C07C 31/40 perhalogenated
• CPC Class Codes: D06M 13/144 Alcohols; Metal alcoholates D06M13/11 takes precedence

Abstract

A new process for the manufacture of polyfluoroalcohols is provided. The polyfluoroalcohols correspond to the formula

wherein Rf is a perfluorinated hydrocarbon radical with 1 to 22 carbon atoms, and R1 hydrogen, methyl, or hydroxymethyl. They are obtained from phosphorus-containing polyfluoro-compounds of the formula

wherein R1 is hydrogen, methyl or -CH2-O-POCl2 by hydrolysis with water or water donating compounds. The polyfluoroalcohols are useful as oil-repellants for various substrates or as intermediates for the manufacture of oil-repellants.

Claims

1. A PROCESS FOR THE MANUFACTURE OF POLYFLUOROALCOHOLS OF THE FORMULA

2. A process according to claim 1, wherein phosphorus-containing polyfluoro compounds which contain a straight-chain or branched perfluoroalkyl radical with 4 to 17 carbon atoms are hydrolysed.

3. A process according to claim 1, wherein phosphorus-containing polyfluoro compounds of the formula

4. A process according to claim 3, wherein phosphorus-containing polyfluoro compounds of the formula

5. A process according to claim 4, wherein phosphorus-containing polyfluoro compounds of the formula

6. A process according to claim 5, wherein phosphorus-containing polyfluoro compounds of the formula

7. A process according to claim 5, wherein phosphorus-containing polyfluoro compounds of the formula