Tris-perfluoroalkyl terminated neopentyl alcohols and derivatives therefrom

摘要

Tris-perfluoroalkyl terminated neopentyl alcohols of the formula (R_f-E_n-X-CH₂)₃CCH₂OH prepared from halogenated neopentyl alcohols and thiols of the formula R_f-E_n-SH, amines of the formula R_f-E_n-NH-R, alcohols of the formula R_f-E_n-OH, perfluoro-acids or amides, are described. The alcohols react with isocyanates to prepare urethanes; with acids or derivatives, to prepare esters or carbonates; with epoxides to form ethers. Further, they may be converted to halide intermediates. The products all contain the residue of at least one R_f-neopentyl alcohol containing three perfluoroalkyl hetero groups.;These compositions provide improved thermal stability and useful low surface energy oil and water repellent coatings, for textiles, glass, paper, leather and other substrates, and in spin finishes for textile fibers.