The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 1995
Filed:
Oct. 25, 1993
Richard J Lagow, Austin, TX (US);
Exfluor Research Corporation, Austin, TX (US);
Abstract
Perfluoroethers having a spherical shape are described. The perfluoroethers can be represented by the formula ##STR1## wherein R.sub.f1, R.sub.f2, R.sub.f3 and R.sub.f4 are the same or different and are selected from short, straight or branched chain perfluoroalkyl or perfluoroether groups. R.sub.f1, R.sub.f2, R.sub.f3, or R.sub.f4 can also be; ##STR2## wherein R'.sub.f1 -R'.sub.f3 are defined as R.sub.f1 -R.sub.f3 above The perfluoropolyethers are designed to act like 'molecular ball bearings' and have high thermal stability and lubrication properties. They are useful as stable fluids, heat transfer fluids, vapor phase soldering fluids and oxygen carriers.