Tetrafluoroethylene, homopolymer, telomers with pentafluoroiodoethane, reaction products with ethylene, hydrolyzed, reaction products with 2,3-epoxypropan-1-ol, octadecan-1-ol and 1,3,5-tris(6-isocyanatohexyl)biuret (consisting of 50 wt % or more of speci