| 摘要 |
A functional fluid composition comprising a mixture of:(a) at least one functional fluid base stock; and(b) an additive package comprising at least one derivative of a mono-, di-, or poly-alkylated naphthalenesulfonic acid selected from the group consisting of:(i) neutral metal salts of said mono-, di-, and poly-alkylated naphthalenesulfonic acids;(ii) basic metal salts of said mono-, di-, and poly-alkylated naphthalenesulfonic acids;(iii) amine salts of said mono-, di-, and poly-alkylated naphthalenesulfonic acids; and(iv) esters of said mono-, di-, and poly-alkylated naphthalenesulfonic acids;wherein the mono-, di-, and poly-alkylated naphthalenesulfonic acids are represented by formula (I):wherein R1, R2, R3 and R4 are individually selected from the group consisting of hydrogen and essentially linear hydrocarbyl groups having about 10 to about 14 carbon atoms; and wherein l, m, n and p are integers from 0 to 4 and the sum of l+m+n+p is at least 1; and wherein R1, R2, R3, or R4 is a hydrogen where either l, m, n, or p is 0.
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