| 摘要 |
<p>FUNCTIONAL FLUIDS AND CONCENTRATES CONTAINING ASSOCIATIVE POLYETHER THICKENERS AND CERTAIN METAL DIALKYLDITHIOPHOSPHATES The invention relates to functional fluid concentrates and functional fluids which can be prepared by mixing the concentrates with water. The functional fluids can be used in hydraulic systems or as metalworking compositions to cool and lubricate surfases which are in frictional contact during operations such as the turning, cutting, peeling, or grinding of metals. The functional fluid concentrate comprises: (a) a cloud point raising metal dialkyldithio phosphate additive having the following structural formula: wherein R1, R2, R3, and R4 are individually linear or branched alkyl, alkenyl, aryl, arylalkyl and alkylaryl groups having from 1 to 24 carbon atoms: and M is selected from the group consisting of Zn, Sb, Sn, Mg, and Mn; preferably Zn or Sb; (b) a polyether nonionic surfactant; (c) an associative polyether thickener; and (d) a nitrogen-containing, phosphorous-free carboxylic solubilizer. Preferably the concentrate also contains a linear or branched alkanolamine having 2 to 10 carbon atoms.</p> |
