| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear perfluoropolyether capable of being realizable by improving functional value so as to approach to 2 without using the perfluoropolyether (a high PO) having many peroxy bonds as a raw material. SOLUTION: This perfluoropolyether is obtained by oxidizing perfluorodioxole expressed by formula (I) äwherein, R<SB>f</SB>is F or (O)<SB>y</SB>C<SB>n</SB>F<SB>2n+1</SB>[wherein, (y) is 0, 1; (n) is 1, 2, 3, 4 and 5, and preferably 1]; and W is F, C<SB>n</SB>F<SB>2n+1</SB>, and preferably F or CF<SB>3</SB>} in the presence of optionally tetrafluoroethylene and/or hexafluoropropylene and then reducing the obtained peroxyperfluoropolyether. COPYRIGHT: (C)2004,JPO
|
