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US 4,239,635 AGranted
Novel diamide and lubricants containing same
AssigneeCincinnati Milacron Inc.
InventorWalter E. Rieder
Life of this patent
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Abstract
Carboxylic acid terminated diamides and alkali metal, ammonium or amine salts thereof are provided which are derived from the reaction of organic polycarboxylic acids and polyoxyalkylene diamines. The diamides have lubricating properties and are especially useful in aqueous metal working fluids.
Claims25
A carboxylic acid group terminated polyoxyalkylene diamide and the alkali metal, ammonium or organic amine salt thereof having the following formula ##STR3## wherein R is the divalent polyoxyalkylene chain radical residue of an amine terminated polyoxyalkylene diamine absent the terminal amine groups,
- R.sup.1 and R.sup.2 are the same or different and are selected from the group consisting of aliphatic, aromatic, cycloaliphatic, arylaliphatic, alkyl aromatic, thiodialiphatic, halogen substituted aliphatic or halogen substituted aromatic radicals and having a free valence of a+n+1 and b+m+1 respectively,
- Z is an organic amine cation, ammonium ion or alkali metal ion,
- a is 0 to 3,
- b is 0 to 3,
- n is 0 to 3,
- m is 0 to 3,
- a+n is 0 to 3,
- b+m is 0 to 3 and
- a+b+m+n is 1 to 6.
6 more elements
Dependencies are inferred from the claim text.