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US 4,523,039 AGranted
Method for forming perfluorocarbon ethers
AssigneeUniversity of Texas
InventorsRichard J. Lagow, Glenn E. Gerhardt
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Abstract
A method is disclosed for producing fluorocarbon ethers wherein a high molecular weight polyether is reacted with elemental fluorine to produce a highly fluorinated polyether which is subjected to an elevated temperature sufficient to cause fragmentation of the polymer chain to produce fluorocarbon ethers.
Claims6
A method for forming fluorocarbon ethers having perfluoralkyl groups, comprising:
- a. fluorinating a high molecular weight polyether under conditions which produce a fluorinated polyether;
- b. subjecting said fluorinated polyether to a temperature which is higher than the temperature used in the conditions in step a, and between approximately 55.degree. C. and 210.degree. C. to cause a controlled fragmentation of said polyether into lower molecular weight fluorocarbon ether compounds;
- and
- c. separating said fluorocarbon ether compounds from the reaction mixture.
1 more element
Dependencies are inferred from the claim text.