| abstract |
wherein R 'are the same or different and are a radical of the formula mean, where R 2 , R 3 and R 4 are independently C 1 -C 18 alkyl and together have no more than 22 C atoms and R 3 and R 4 are also hydrogen or wherein R and R 1 are C 5 -C 6 Are cycloalkyl, unsubstituted or substituted by C 1 -C 4 alkyl, phenyl, naphthyl, C 7 -C 14 aralkyl, furfuryl, thienyl and in which YS -, - O -, - NH -, - N (C 1 -C 12 -Alkyl) -. -CH 2 -, - CH (C 1 -C 12 alkyl) -or-C (C 1 -C 12 alkyl) 2 - and X⊕ 1 are equivalent to a metallic cation from the group Li ⊕ , Na⊕, K ⊕, Mg 2 ⊕, Ca 2⊕ , Ba 2⊕ , Zn 2⊕ , Mn 2 ⊕, Ni 2⊕ , Fe 3⊕ , Co 2⊕ , Cu 2⊕ , Al 3⊕ , Cr 3⊕ , VO 3⊕ , ZrO 2⊕ , MoO 2⊕ , and TiO 2⊕ means are suitable as additives to lubricants and hydraulic oils and lead to an improvement in the high-pressure and anti-wear properties. |