Water-based hydraulic fluids

Compositions – Heat-exchange – low-freezing or pour point – or high boiling... – Organic components

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252 493, 252 495, 252 52A, 252 56R, 252 73, 252 74, 252 76, 252 77, 252 785, 252 79, 526287, C10M 304, C10M 312

Patent

active

044696116

ABSTRACT:
Substantially oil-free aqueous industrial fluids possess superior lubricating and wear preventing characteristics and are useful as hydraulic fluids and metalworking compositions. Fluids of the invention comprise (1) an aqueous liquid and (2) a water-soluble synthetic addition copolymer of (a) an ethylenically unsaturated polyalkyleneoxy containing monomer, (b) an ethylenically unsaturated water-soluble monomer and, optionally, (c) an ethylenically unsaturated water-insoluble monomer.
The industrial fluids exhibit good Newtonian behavior and mechanical stability at higher shear.

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