Water soluble lubricant

  • US 4,636,321 A
  • Filed: 01/27/1986
  • Issued: 01/13/1987
  • Est. Priority Date: 09/30/1985
  • Status: Expired due to Fees
First Claim
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1. A water soluble metal working lubricant concentrate consisting essentially of:

  • (a) From about 10 to about 60 percent by weight of a polyalkylene glycol polymer having the formula ##STR7## wherein R1 is selected from the group consisting of hydrogen, normal hydrocarbons having from about 2 to about 20 carbon atoms, polyhydroxy substituted hydrocarbons having from about 2 to about 10 carbon atoms, aryl hydrocarbons having from about 6 to about 20 carbon atoms and alkyaryl hydrocarbons having from about 7 to about 30 carbon atoms;

    and wherein a may range between about 0 and about 75, b may range between about 1 and about 100 and b is greater than or equal to a;

    (b) from about 1 to about 25 percent by weight of an ethoxylated carboxylic acid or alcohol having the formula ##STR8## wherein R2 and R3 each are selected from the group consisting of hydrogen, normal hydrocarbons having from about 2 to about 20 carbon atoms, polyhydroxy substituted hydrocarbons having from about 2 to about 10 carbon atoms, aryl hydrocarbons having from about 6 to about 20 carbon atoms and alkyl aryl hydrocarbons having from about 7 to about 30 carbon atoms, but R2 and R3 need not be identical to R1 or to each other; and

    wherein c may range between about 1 and about 100;

    (c) from about 1 to about 25 percent by weight of a complex organic phosphate ester having the formula ##STR9## wherein R4 is selected from the group consisting of hydrogen or mono-, di- or triethanolamine;

    wherein R5 is a polyoxyalkylated alcohol wherein the alcohol portion is derived from a member of the group consisting of saturated and unsaturated alkyl radicals having about 1 to about 20 carbon atoms, aryl radicals, and alkylaryl radicals wherein the alkyl substituent comprises from about 1 to about 20 carbon atoms and is saturated or unsaturated, and wherein the polyoxyalkylated portion of R5 is derived from ethylene oxide, propylene oxide, a polyhydroxy substituted alkanol having from about 2 to about 10 carbon atoms, or a combination of these, wherein the number of monomeric units of any single type is from about 1 to about 100;

    and wherein R6 is defined as is R4 or as is R5 above, but need not be identical to either, so long as it can be described as is one or the other;

    (d) from about 1 to about 20 percent by weight of an alkanolamine, such as mono-, di- or triethanolamine; and

    (e) from about 0 to about 65 percent by weight water.

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