Patent ID: 7670695

Claim:
A lubricant for recording media containing: a perfluoropolyether compound represented by Formula (1), R 1 —CH 2 CF 2 O—(CF 2 CF 2 O) m —(CF 2 O) n —CF 2 CH 2 —R 2 (1) wherein R 1 represents R represents a C 1-4 haloalkyl group, R 2 represents —OCH 2 CH(OH)CH 2 OH, and m and n are each independently 1-30; and another perfluoropolyether compound represented by Formula (2), R 1 —CH 2 CF 2 O—(CF 2 CF 2 O) m —(CF 2 O) n —CF 2 CH 2 —R 3 (2) wherein R 1 , m and n are as defined above and R 3 represents —OCH 2 CH(OH)CH 2 OCH 2 CH(OH)CH 2 OH.