Synthesis of Perfluoro Radiolabeled Lubricants and Their Utilization in Lubricant-Distribution Studies
Original Publication Date: 1983-Nov-01
Included in the Prior Art Database: 2005-Feb-07
While there are a number of methods to determine lubricant distribution on magnetic disks (surface extraction, ESCA), they do not provide the combination of high surface precision and the ability to evaluate a complete disk in a single, quick evaluation. The use of radiolabeled lubricants permits this kind of evaluation with a precision dependent only on the resolution of the film used for the autoradiography. With standard, single-coated, X-ray films, this precision is in the order of 25-80 microns. Synthesis: The starting material for these syntheses is a ca terminated perfluoro-polypropylene oxide available commercially from the DuPont Corporation under the name KRYTOX 157.