Patent ID: 8628869
Filing Date: 2014-01-14
Classification: C07D,G11B

Abstract:
1. A lubricant, comprising a perfluoropolyether having a chemical structure of: wherein Rf is at least one of: —CF 2 O(CF 2 CF 2 O) m (CF 2 O) n CF 2 — and —CF 2 CF 2 O(CF 2 CF 2 CF 2 O) k CF 2 CF 2 —, with m representing 0 or a positive integer, n representing 0 or a positive integer, and k representing 0 or a positive integer, and wherein R1, R2, R3 and R4 are selected from a group consisting of —H or with at least one of R1, R2, R3 and R4 being