Water-miscible cooling lubricant concentrate
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United States of America Patent
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Jan 28, 2003
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N/A
app pub date -
Mar 12, 2001
filing date -
Jul 28, 1998
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Abstract
Described is a water-miscible cooling lubricant concentrate which comprises natural or synthetic mineral oils, emulsifying agents, corrosion protection additives, solubilizers, means of preservation, metal inhibitors and other conventional additives, and, after dilution to form a 2 to 25% by weight aqueous solution, has a pH value between 7.0 and 7.5 as well as additionally as means of preservation and/or anticorrosive additive comprises a mixture of a) a conversion product of boric acid and a primary or tertiary alkanolamine and/or b) an ethoxylated and/or propoxylated fatty acid or a fatty acid alkanolamide as well as at least one further compound selected from the group comprised of c) a carboxylic acid imide, a phosphoric acid ester, a triazole, a thiadiazole, an isothiazolinone, an imidazole, a guanidine, an aromatic carboxylic acid and the 3-iodo-2-propinyl-carbamate and/or d) a methylol urea derivative.
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