AMIDES AND ESTERS OF PERFLUOROPOLYOXAALKYLENESULFO- OR PERFLUOROPOLYOXAALKYLENE CARBOXYLIC ACIDS AND A METHOD OF THEIR SYNTHESIS Russian patent published in 1995 - IPC

FIELD: organic chemistry. SUBSTANCE: products: amides and esters of perfluoropolyoxaalkylenesulfo- or perfluoropolyoxaalkylene carboxylic acids of the general formula where R_FCF₃O-, C₂H₅O-, C₃F₇O-; ; (^_CF₂CF₂O)_nCF₂-,; , n 8-5; Z=-CO-, -SO₂-,; Q = -N(C_mH_2mOH)₂, where m 2,3,4,6,8,10; -N[(C₂H₄O)₄C₃H₆OH];; NHC₂H₄OR_n, where R_n= CH₃, C₂H₅, C₃H₇, -NH(C₂H₄O)₅H, OC_eH_2eN(C_eH_2eOH) where e 2,4; C_kH_2k+1O, where R 6, 8, 10. Compound is synthesized by mixing fluoroanhydride of perfluoropolyoxaalkylenesulfo- or perfluoropolyoxaalkylene carboxylic acid of the general formula where R_F=CF₃, -(CF₂CF₂CF₂O)_nCF₂CF₂-,; n 8-55; Z -CO-, -SO₂-, with primary, secondary or tertiary amine or alkanoylamine of the general formula H_3-xN(R)_x where X 1, 2, 3; R R=(C_nH_2nOH)_x, where n 2, 3, 4, 6, 8, 10; -[(C₂H₄O)₄C₃H₆OH]_x at X 2 or -(C₂H₄OCH₃)_x,, -(C₂H₄OC₂H₅)_x,, -(C₂H₄OC₃H₇)_x,, -[(C₂H₄O)₅-H]_x at X 1 or (C_nH_2nOH)_x,; X 3; n 2, 4, or higher fatty alcohol of the general formula C_nH_2n+1OH where n 6, 8, 10, and compound from the group: alkaline or alkaline-earth metal fluoride, ammonium fluoride or aluminium fluoride, alkaline metal carbonate, hydrocarbonate at molar ratio of indicated compounds 1.0: (1.2-4.0):(1.5-3.0), respectively, at (-25) (+8) C followed by heating up to 40-60 C, keeping reaction mixture at this temperature for 0.6-3.0 hr and isolation of the end product. Mixing parental products of reaction can be carried out in the presence of polyfluorocarbon solvent. Synthesized compounds were used for preparing antifriction, antiwearing, antiscratching addition agents to lubricant oils and as protective coating against atmosphere corrosion. EFFECT: improved method of synthesis, enhanced quality of products. 4 cl