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US 4,521,321 AGranted
Conveyor track lubricant composition employing phosphate esters and method of using same
AssigneeDiversey Wyandotte Corporation
InventorsPatricia A. Anderson, Roger G. Hagens, Dianne M. Roden
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Abstract
It has been found that a conveyor system can be lubricated with dilute [1.0.times.10.sup.-3 M] aqueous solutions of a partially neutralized mono phosphate ester of the formula: ##STR1## wherein n has a value 0 to 3 and R is a C.sub.12 to C.sub.20 saturated or partially unsaturated linear alkyl group, or a mixture of such groups. The use of a synergist such as a long-chain alcohol, a fatty-acid derived amine oxide, or urea improves the properties of the lubricant compositions.
Claims15
In a method for lubricating a continuously-moving conveyor system for transporting packages from a first station to a second station and wherein said packages are temporarily detained at said first station while said conveyor moves beneath said packages, and said conveyor system is wetted with an aqueous lubricant composition;
- the improvement wherein said aqueous lubricant composition comprises:
- A. a phosphate ester component consisting essentially of:
- (i) 51 to 100 percent by weight of a mono alkyl phosphate ester of the formula ##STR5## (ii) 0 to 49 percent by weight of a dialkyl phosphate ester of the formula ##STR6## wherein the concentration of said phosphate ester component in said lubricant composition is in the range 1.0.times.10.sup.-3 to 3.0.times.10.sup.-3 molar;
- B. a synergist component selected from the group consisting of:
- (i) an alcohol of the formula
- R'--OCH.sub.2 CH.sub.2 --.sub.m --OH
- (ii) an amine oxide of the formula ##STR7## (iii) urea, said synergist present in an amount between 10 and 150 percent of the weight of said phosphate ester component;
- wherein m and n can have a value of zero through three, R and R' are selected from the group consisting of (i) linear saturated primary alkyl groups, C.sub.14 through C.sub.18, (ii) linear partially unsaturated primary alkyl groups C.sub.16 through C.sub.20, and (iii) a mixture of linear saturated primary alkyl groups C.sub.12 through C.sub.20, wherein the average length of the alkyl substituant is C.sub.13 through C.sub.18, and R" is a mixture of saturated and unsaturated alkyl groups C.sub.8 through C.sub.18 having an average chain length C.sub.12 through C.sub.18 ;
- and
- said lubricant composition being at least partially neutralized with a base whereby its pH is in the range 5.0 through 10.0.
7 more elements
An Aqueous lubricant composition comprising:
- A. a phosphate ester component consisting essentially of:
- (i) 51 to 100 percent by weight of a mono alkyl phosphate ester of the formula ##STR8## (ii) 0 to 49 percent by weight of a dialkyl phosphate ester of the formula ##STR9## wherein the concentration of said phosphate ester component in said lubricant composition is in the range 1.0.times.10.sup.-3 to 3.0.times.10.sup.-3 molar;
- B. a synergist component selected from the group consisting of:
- (i) an alcohol of the formula
- R'--OCH.sub.2 CH.sub.2).sub.m --OH
- (ii) an amine oxide of the formula ##STR10## (iii) urea, said synergist present in an amount between 10 and 150 percent of the weight of said phosphate ester component;
- wherein m and n can have a value of zero through three, R and R' are selected from the group consisting of (i) linear saturated primary alkyl groups, C.sub.14 through C.sub.18, (ii) linear partially unsaturated primary alkyl groups C.sub.16 through C.sub.20, and (iii) a mixture of linear saturated primary alkyl groups C.sub.12 through C.sub.20, wherein the average length of the alkyl substituant is C.sub.13 through C.sub.18, and R" is a mixture of saturated and unsaturated alkyl groups C.sub.8 through C.sub.18 having an average chain length C.sub.12 through C.sub.18 ;
- and
- said lubricant concentrate being at least partially neutralized with a base whereby its pH is in the range 5.0 through 10.0.
6 more elements
An aqueous lubricant concentrate comprising:
- A. a phosphate ester component consisting essentially of:
- (i) 51 to 100 percent by weight of a mono aklyl phosphate ester of the formula ##STR11## (ii) 0 to 49 percent by weight of a dialkyl phosphate ester of the formula ##STR12## wherein the concentration of phosphate ester in said concentrate is in the range 0.2 to 0.5 molar;
- B. a synergist component selected from the group consisting of:
- (i) an alcohol of the formula
- R'--OCH.sub.2 CH.sub.2 --.sub.m --OH
- (ii) an amine oxide of the formula ##STR13## (iii) urea, said synergist present in an amount between 10 and 150 percent of the weight of said phosphate ester component;
- wherein m and n can have a value of zero through three, R and R' are selected from the group consising of (i) linear saturated primary alkyl groups, C.sub.14 through C.sub.18, (ii) linear partially unsaturated primary alkyl groups C.sub.16 through C.sub.20, (iii) a mixture of linear saturated primary alkyl groups C.sub.12 through C.sub.20, wherein the average length of the alkyl substituent is C.sub.13 through C.sub.18, and R" is a mixture of saturated and unsaturated alkyl groups C.sub.8 through C.sub.18 having an average chain length C.sub.12 through C.sub.18 ;
- and
- said lubricant concentrate being at least partially neutralized with a base whereby its pH is in the range 5.0 through 10.0.
6 more elements
Dependencies are inferred from the claim text.