| 摘要 |
A novel perfluoropolyether derivative which is less likely to undergo decomposition, which is free from a problem of deterioration during its use, and which is useful as a lubricating oil or a coating agent, is provided. A compound represented by the following formula (1): <?in-line-formulae description="In-line Formulae" end="lead"?>HO-(CH<SUB>2</SUB>CH<SUB>2</SUB>O)<SUB>r</SUB>. (CH<SUB>2</SUB>CH(OH)CH<SUB>2</SUB>O)<SUB>p</SUB>-CH<SUB>2</SUB>CF<SUB>2</SUB>O(CF<SUB>2</SUB>CF<SUB>2</SUB>O)<SUB>m</SUB>CF<SUB>2</SUB>CH<SUB>2</SUB>O--(CH<SUB>2</SUB>CH(OH)CH<SUB>2</SUB>O)<SUB>q</SUB>. (CH<SUB>2</SUB>CH<SUB>2</SUB>O)<SUB>s</SUB>-H Formula (1)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein m represents an integer of from 3 to 200, and each of p, q, r and s which are independent of one another, represents an integer of from 0 to 100, provided that when each of p, q, r and s which are independent of one another, is an integer of at least 1, the arrangement of -(CH<SUB>2</SUB>CH<SUB>2</SUB>O)- and -(CH<SUB>2</SUB>CH(OH)CH<SUB>2</SUB>O)- units is not particularly limited, and when one of r and p is an integer of at least 2 and the other is an integer of at least 1, or when one of q and s is an integer of at least 2 and the other is an integer of at least 1, these units may be arranged in a block form or at random.
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