Fluoropolyethers containing end groups endowed with anchoring capacity

摘要

Compounds suitable for being used as lubricants, having general formula: (I) RO-(C3F6O)m-(CFXO)n-CFX-L, or (II) R''CFXO-(C3F6O)x(CFXO)y-(C2F4O)z-(CFX-L, where R=-CF3, -C2F5, -C3F7 X=F, -CF3 R''=F, -CF3, -C2F5 m=an integer from 3 to 100 n=a finite integer, or=zero, wherefore m+n ranges from 3 to 100, provided that, if n is finite, m/n ranges from 5 ro 20 and R is preferably=CF3, if n=zero, R is preferably -C2F5 or -C3F7 x=a finite integer, or=zero y, z=finite integers, such that x+y+z ranges from 5 to 200, while x+z/y ranges from 5 to 0.5, provided that when x=zero, z/y ranges from 1 to 0.5 and y+z ranges from 5 to 200 n while X is preferably F, and R''=L L=group A-Y, where A=-CH2O-, -CH2-O-CH2, -CF2, CF2O-, Y=an organic radical covered by one of the following formulas: where R1, R2=alkyls C1-C3, E=CHR3 or -CH2-CHR3 B=H or a radical OR3- R3=H or an alkyl C1-C3.