Stabilized foam control compostions for lubricating compositons and their use
OwnerHilbert Esselbrugge, Rob de Bruijninventors
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Abstract
The invention relates to stabilized foam compositions for lubricating compositions and their use in lubricating compositions, particularly metal working fluids.
Claims13
A process for preparing a stabilized foam control composition for lubricating compositions comprising:
- (a) combining a mixture of components comprising:
- component (a) which comprises at least one active foam control agent;
- and
- component (b) which comprises at least one lubricating oil,
- such that the amount of active foam control agent is from about 0.01 weight percent to about 70 weight percent, based upon total weight of said lubricating oil;
- and
- (b) mixing (a) and (b) with sufficient energy to create a mixture, which does not show full liquid-liquid phase separation and/or solid phase separation as determined by visual observation for at least 1 minute after mixing at ambient temperature.
The process of claim 2 wherein the lubricating oil is selected from the group consisting of fatty acid esters, fatty acid alkanol amides, mineral oils, polybutenes, polyalphaolefines, alkaline aromatics, polyglycols, fatty acid esterified polyglycols, and mixtures thereof.
The process of claim 3 wherein the active foam control agent is selected from the group consisting of acetylene diols and ethoxylated acetylene diols, silicone oils, modified siloxanes, polyglycols, esterified or modified polyglycols, fluorinated surfactants or chemicals, polyacrylates, fatty acids, fatty acid esters, fatty alcohols, fatty alcohol esters, waxes, ureum and mixtures thereof.
Dependencies are inferred from the claim text.