Conveyor lubricant with corrosion inhibition

Abstract

A lubricant composition which protects polymeric articles, and which also inhibits corrosion of metal, the composition including at least one oxyalkylated alcohol carboxylatic acid or salt thereof, and methods of using the same. The composition is advantageous where hydrogen peroxide is also present.

1 . A composition comprising at least one oxalkylated alcohol carboxylic acid or salt thereof, wherein said composition inhibits the corrosion of metal in the presence of hydrogen peroxide.  
     
     
         2 . The composition of  claim 1  wherein said metal is cold rolled steel or stainless steel.  
     
     
         3 . The composition of  claim 2  wherein said metal exhibits less than 0.2% weight loss upon exposure to said composition.  
     
     
         4 . The composition of  claim 1 , said composition comprising about 1 wt-% to about 10 wt-% hydrogen peroxide.  
     
     
         5 . The composition of  claim 1 , said composition comprising about 1 wt-% to about 5 wt-% hydrogen peroxide.  
     
     
         6 . The composition of  claim 1 , said composition comprising about 1 wt-% to about 15 wt-% of said oxalkylated alcohol carboxylic acid or salt thereof.  
     
     
         7 . The composition of  claim 1 , said composition comprising about 1 wt-% to about 10 wt-% of said oxalkylated alcohol carboxylic acid or salt thereof.  
     
     
         8 . The composition of  claim 1  diluted between about 1:200 to about 1:1000 of said composition to water.  
     
     
         9 . The composition of  claim 1  diluted between about 1:600 to about 1:800 of said composition to water.  
     
     
         10 . The composition of  claim 1  wherein hydrogen peroxide is added to said composition.  
     
     
         11 . The composition of  claim 1  further comprising at least one of sodium hydroxide or potassium hydroxide.  
     
     
         12 . The composition of  claim 1  further comprising at least one member selected from the group consisting of pH adjusters or other neutralizing agents, surfactants, emulsifiers, sequestrants, solubilizers, other lubricants, buffers, detergents, bleaching or decolorizing agents, antioxidants, preservatives, antistatic agents, binders, thickeners or other viscosity modifiers, processing aids, carriers, water-conditioning agents, antimicrobial agents, foam inhibitors or foam generators, film formers and combinations thereof.  
     
     
         13 . The composition of  claim 1  further comprising at least one lubricant selected from the group consisting of amines, nonionic surfactants, phosphate esters, silicones, and mixtures thereof.  
     
     
         14 . The composition of  claim 1  further comprising at least one lubricant is an ethylene oxide/propylene oxide block copolymer.  
     
     
         15 . The composition of  claim 1  wherein said at least one lubricant is oleic acid or a salt thereof.  
     
     
         16 . A composition comprising at least one oxalkylated alcohol carboxylic acid or salt thereof, said composition inhibits the corrosion of metal in the presence of hydrogen peroxide.  
     
     
         17 . The composition of  claim 16  wherein said metal is cold rolled steel or stainless steel.  
     
     
         18 . The composition of  claim 17  wherein said metal loses less than about 0.2% of its weight in the presence of hydrogen peroxide.  
     
     
         19 . The composition of  claim 16  wherein said hydrogen peroxide is present from about 1 wt-% to about 10 wt-%.  
     
     
         20 . The composition of  claim 16  wherein said oxalkylated alcohol carboxylic acid or salt thereof is present at a concentration of about 1 wt-% to about 15 wt-%.  
     
     
         21 . The composition of  claim 16  further diluted between about 1:200 to about 1:1000 of said composition to water.  
     
     
         22 . The composition of  claim 16  further diluted between about 1:600 to about 1:800 of said composition to water.  
     
     
         23 . A lubricant composition for containers and/or conveyors comprising an effective amount of at least one lubricant and at least one oxyalkylated alcohol carboxylic acid or salt thereof.  
     
     
         24 . The lubricant composition of  claim 23  further comprising hydrogen peroxide.  
     
     
         25 . The lubricant composition of  claim 23  wherein said at least one lubricant is selected from the group consisting of fatty amines, nonionic surfactants, phosphate esters, silicones, and mixtures thereof.  
     
     
         26 . The lubricant composition of  claim 23  further comprising at least one lubricant which is an ethylene oxide/propylene oxide block copolymer.  
     
     
         27 . The lubricant composition of  claim 23  wherein said at least one lubricant is oleic acid or a salt thereof.  
     
     
         28 . The composition of  claim 23  wherein said oxyalkylated alcohol carboxylic acid or salt thereof is an ethoxylated alcohol dicarboxylic acid.  
     
     
         29 . The composition of  claim 23  comprising about 1 wt-% to about 15 wt-% of said oxalkylated alcohol carboxylic acid or salt thereof.  
     
     
         30 . The composition of  claim 23  further diluted at a ratio between about 1:200 to about 1:1000 of said composition to water.  
     
     
         31 . The composition of  claim 23  further diluted at a ratio of about 1:600 to about 1:800 of said composition to water.  
     
     
         32 . The composition of  claim 23  wherein said composition inhibits corrosion of metal in the presence of hydrogen peroxide  
     
     
         33 . The composition of  claim 32  wherein the metal is cold rolled steel or stainless steel.  
     
     
         34 . The composition of  claim 33  wherein said metal exhibits a weight loss of less than 0.2 wt-% based on initial weight before exposure to hydrogen peroxide.  
     
     
         35 . The composition of  claim 23  said composition having a pH greater than 7.  
     
     
         36 . The composition of  claim 23  further comprising at least one member selected from the group consisting of pH adjusters or other neutralizing agents, surfactants, emulsifiers, sequestrants, solubilizers, other lubricants, buffers, detergents, bleaching or decolorizing agents, antioxidants, preservatives, antistatic agents, binders, thickeners or other viscosity modifiers, processing aids, carriers, water-conditioning agents, antimicrobial agents, foam inhibitors or foam generators, film formers and combinations thereof.  
     
     
         37 . The composition of  claim 23  further comprising about 1 wt-% to about 90 wt-% water.  
     
     
         38 . The composition of  claim 23  further comprising about 50 wt-% to about 85 wt-% water.  
     
     
         39 . A method of lubricating the interface between a container and a moving conveyor surface, the method comprising: 
 (a) applying an aqueous lubricant composition to the container, the conveyor or both, the lubricant comprising an effective amount of at least one lubricant and at least one oxalkylated alcohol carboxylic acid or salt thereof; and    (b) moving the container on the conveyor surface in order to transport the container from a first location to a second location.    
     
     
         40 . The method of  claim 40  wherein said lubricant has a pH greater than 7.  
     
     
         41 . The method of  claim 40  wherein said lubricant is effective in an alkaline environment of about 200 ppm alkalinity.  
     
     
         42 . The method of  claim 40  wherein said container is a liquid beverage container.  
     
     
         43 . The method of  claim 42  wherein said beverage container is filled with said liquid beverage.  
     
     
         44 . The method of  claim 42  wherein said beverage container is polyolefin, polyester, polycarbonate, PVC or copolymers thereof.  
     
     
         45 . The method of  claim 40  wherein said composition inhibits corrosion of metal.  
     
     
         46 . The method of  claim 40  wherein said lubricant composition further comprises hydrogen peroxide.  
     
     
         47 . The method of  claim 45  wherein said metal is cold rolled steel or stainless steel.  
     
     
         48 . The method of  claim 40  wherein said composition exhibits protection of polymeric articles.  
     
     
         49 . The method of  claim 48  wherein said polymeric articles are formed from polyester, polyolefins, polycarbonates, copolymers thereof and mixtures thereof.  
     
     
         50 . The method of  claim 49  wherein said polymeric articles are formed from polyethylene terephthalate or polybutylene terephthalate.  
     
     
         51 . The method of  claim 48  wherein said polymeric articles exhibit minimal stress cracking or hazing.  
     
     
         52 . A method of protecting a polymeric article of manufacture by coating at least a portion of the surface of said polymeric article with a lubricating composition, said composition comprising an effective amount of at least one lubricant and at least one oxalkylated alcohol carboxylic acid or salt thereof.  
     
     
         53 . The method of  claim 52  wherein said polymeric article is formed from at least one member selected from the group consisting of polyolefins, polyesters, polycarbonates, copolymers thereof and mixtures thereof.  
     
     
         54 . The method of  claim 53  wherein said polymeric article is formed form polyethylene terephthalate or polybutylene terephthalate.  
     
     
         55 . The method of  claim 52  wherein said polymeric article is a beverage container.  
     
     
         56 . The method of  claim 52  wherein said lubricating composition comprises about 1 wt-% to about 15 wt-% of said oxalkylated alcohol carboxylic acid or salt thereof.  
     
     
         57 . The method of  claim 52  wherein said lubrication composition comprises about 1 wt-% to about 10 wt-% of said oxalkylated alcohol carboxylic acid or salt thereof.  
     
     
         58 . The method of  claim 52  wherein said oxalkylated alcohol carboxylate is an ethoxylated alcohol dicarboxylic acid or salt thereof.  
     
     
         59 . The method of  claim 52  wherein said lubricating composition further comprises about 1 wt-% to about 90 wt-% water.  
     
     
         60 . The method of  claim 52  wherein said lubricating composition further comprises about 50 wt-% to about 85 wt-% water.  
     
     
         61 . The method of  claim 52  wherein said lubricating composition is further diluted at a ratio of about 1:200 to about 1:1000 of said composition to water.  
     
     
         62 . The method of  claim 52  wherein said lubricating composition is further diluted at a ratio of about 1:600 to about 1:800 of said composition to water.  
     
     
         63 . The method of  claim 52  wherein said composition further comprises hydrogen peroxide.