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US 4,781,847 AGranted
Aqueous lubricant
AssigneeAmerican Polywater Corporation
InventorGene C. Weitz
Life of this patent
Estimating the term…
Abstract
An improved aqueous gel lubricant comprising water and about 0.5 to 25 wt-% of at least one 200 to 8,000 molecular weight polyalkylene glycol such as polyethylene glycol and polypropylene glycol. Preferably, the lubricant further comprises about 0.01 to 10 wt-% viscosity modifier such as a water soluble resin, natural gum, or cellulosic compound. The lubricant may further contain an effective antioxidizing, preserving, solvating, suspending and freezing point depressing amount of a hydroxy compound.
Claims25
A fatty-acid-free lubricant consisting essentially of:
- (a) about 0.5 to 25 wt-% polyalkylene glycol having a molecular weight of about 1,000 to 15,000;
- (b) an effective gelling amount of a viscosity modifier consisting essentially of a mixture of at least two components selected from the group consisting of polymeric polyelectrolyte acrylate compounds, polyalkylene oxide compounds, polyacrylamide compounds and cellulosic compounds;
- and
- (c) water.
1 more element
A fatty-acid-free lubricant consisting essentially of:
- (a) about 0.5 to 25 wt-% polyalkylene glycol having a molecular weight of about 1,000-15,000;
- (b) an effective gelling amount of a viscosity modifier consisting essentially of a mixture of at least two components selected from the group consisting of polymeric polyelectrolyte acrylate compounds, polyalkylene oxide compounds, polyacrylamide compounds and cellulosic compounds;
- (c) an effective antioxidant, solubilizing and freezing point depressing amount of a C.sub.1-6 alcohol;
- and
- (d) water.
2 more elements
Dependencies are inferred from the claim text.