| 摘要 |
<p>Compounds formed of (per)fluoropolyether chains and end groups having a pyridine structure, with structural formula: T1-CW1-O-R f-CW2-T2(I) wherein T1, T2, equal to or different from each other, have the following meanings: - F, CF3, C2F5, (C2F4)C1: - CH2-B-Y, CH (CF3) O-Y, wherein: - B = O, S; (see above formula) wherein R1, R2, R3, R4, equal to or different from each other, are H, F, C1-C8 linear or branched perfluoroalkyl, NO2, CN; with the proviso that at least one of the two end groups T1, T2 is CH2-B-Y or CH(CF3)O-Y as above defined; W1, W2, equal to or different from each other, are -F, -CF3; Rf is a (per)fluoropolyoxyalkylene chain having a number average molecular weight from 400 to 10,000.</p> |
