SKI GREASE Russian patent published in 2003 - IPC

FIELD: household chemical goods. SUBSTANCE: ski grease intended for greasing skis before sporting events is constituted by paraffin and fluorinated modifier, the latter being embedded into fine solid support, in particular zinc oxide, titanium oxide, or carbon-graphite adsorbent. Support with fluorinated modifier constitutes 3-12% of the total weight of grease and fluorinated modifier only 0.3-2.5% of the total weight of grease. Fluorinated modifier, in turn, is composed of (i) oligomers of methacrylic acid esters with fluorinated alcohols-telomers having general formula CH₂ = C(CH₃)COOCH₂(CF₂CF₂)_nY wherein n= 1= 6 and Y is hydrogen or fluorine atom; (ii) α, ω-chloroperfluoroparaffins of general formula Cl = (CF₂CF₂)_n-Cl wherein n=10-20; and (iii) polyethers of general formula CF₃O(CF₂CF₂O)_nCF₂COF wherein n=10-30; proportions of (i)-(iii) constituents being 50-90, 10, and 0-40%, respectively. EFFECT: reduced friction coefficient for working surface of ski and snow, and prolonged shelf time.