| abstract |
A novel perfluoropolyether derivative which is lessnlikely to undergo decomposition, which is free from anproblem of deterioration during its use, and which isnuseful as a lubricating oil or a coating agent, isnprovided. n A compound represented by the following formula (1):n HO-(CH 2 CH 2 O) r ·(CH 2 CH(OH)CH 2 O) p -CH 2 CF 2 O(CF 2 CF 2 O) m CF 2 CH 2 O- n-(CH 2 CH(OH)CH 2 O) q ·(CH 2 CH 2 O) s -H nwherein m represents an integer of from 3 to 200, andneach of p, q, r and s which are independent of onenanother, represents an integer of from 0 to 100, providednthat when each of p, q, r and s which are independent ofnone another, is an integer of at least 1, the arrangementnof -(CH 2 CH 2 O)- and -(CH 2 CH(OH)CH 2 O)- units is notnparticularly limited, and when one of r and p is anninteger of at least 2 and the other is an integer of atnleast 1, or when one of q and s is an integer of at leastn2 and the other is an integer of at least 1, these unitsnmay be arranged in a block form or at random. |