Conveyor system lubricant

Abstract

A conveyor lubricant including an effective lubricating amount of at least one lubricant and at least one protectant which is an alkanolamide, alkyl ether sulfonate, acetylenic diol, alkyl ether carboxylic acid or salt thereof, alkylated diphenyl oxide disulfonic acid or salt thereof or a mixture thereof, and methods of using the same.

1 . A conveyor lubricant composition comprising an effective lubricating amount of at least one lubricant and at least one protectant which is a member selected from the group consisting of alkanolamides, alkyl ether sulfonates, acetylenic diols, alkyl ether carboxylic acids or salts thereof, and mixtures thereof.  
   
   
       2 . The conveyor lubricant of  claim 1  wherein said at least one porotectant is an acetylenic diol employed in combination with at least one alkylated iphenyl oxide disulfonic acid or salt thereof, and mixtures thereof.  
   
   
       2 . A conveyor lubricant as in  claim 1  comprising about 0.1 wt-% to about 25 wt-% of said at least one protectant.  
   
   
       3 . A conveyor lubricant as in  claim 1  comprising about 0.5 wt-% to about 15 wt-% of said at least one lubricant.  
   
   
       4 . A conveyor lubricant as in  claim 1  comprising at least one lubricant which is a member selected from the group consisting of silicones, nonionic surfactants, fatty acids or salts thereof, amines, amine acetates, and mixtures thereof.  
   
   
       5 . A conveyor lubricant as in  claim 4  wherein said at least one lubricant is a nonionic surfactant which is an ethylene oxide/propylene oxide block copolymer.  
   
   
       6 . A conveyor lubricant as in  claim 5  wherein said conveyor lubricant composition further comprises hydrogen peroxide.  
   
   
       7 . A conveyor lubricant as in  claim 1  wherein said at least one lubricant is a salt of oleic acid.  
   
   
       8 . A conveyor lubricant as in  claim 1  wherein at least one protectant is an alkanolamide.  
   
   
       9 . A conveyor lubricant as in  claim 8  wherein said alkonalamide is employed at a concentration of greater than about 5 wt-% up to about 15 wt-%.  
   
   
       10 . A conveyor lubricant as in  claim 1  wherein at least one protectant is an alkyl ether sulfonate.  
   
   
       11 . A conveyor lubricant as in  claim 10  wherein said alkl ether sulfonate is employed at a concentration of about 5 wt-% to about 20 wt-% and said lubricant is selected from the group consisting of silicones, fatty acids, amine acetates and mixtures thereof.  
   
   
       12 . A conveyor lubricant as in  claim 1  wherein at least one protectant is an alkyl ether carboxylic acid or salt thereof, and at least one lubricant is a nonionic surfactant, a fatty acid or salt thereof, an amine acetate, or mixture thereof.  
   
   
       13 . The conveyor lubricant of  claim 12  wherein said at least one lubricant is a nonionic surfactant which is an ethylene oxide/propylene oxide block copolymer.  
   
   
       14 . A conveyor lubricant as in  claim 12  wherein said at least one protectant is an alkyl ether carboxylic acid or salt thereof is employed at a concentration of about 5 wt-% to about 10 wt-%.  
   
   
       15 . A conveyor lubricant as  claim 1  wherein said at least one protectant is an acetylenic diol and at least one lubricant is a silicone, an amine acetate or mixture thereof.  
   
   
       16 . A conveyor lubricant as in  claim 15  wherein said acetylenic diol is employed at a concentration of about 1 wt-% or less.  
   
   
       17 . A container or a conveyor for a container, whose surface is coated at least in part with a lubricant composition comprising at least one lubricating agent and at least one protectant which is selected from the group consisting of alkanolamides, alkyl ether sulfonates, acetylenic diols, alkyl ether carboxylic acids or salts thereof and mixtures thereof.  
   
   
       18 . A container or conveyor as in  claim 17 , wherein the container is a beverage container.  
   
   
       19 . A container or conveyor as in  claim 17  wherein the container is made from polyalkylene terephthalate.  
   
   
       20 . A container or conveyor as in  claim 17  wherein said at least one lubricating agent is selected from the group consisting of silicones, nonionic surfactants, fatty acids or salts thereof, amines, amine acetates, and mixtures thereof.  
   
   
       21 . A container or conveyor as in  claim 20  wherein said at least one lubricating agent is a nonionic surfactant which is an ethylene oxide/propylene oxide block copolymer.  
   
   
       22 . A method of preventing or reducing stress cracking of polymeric containers comprising treating the container with a lubricating composition comprising at least one lubricant and at least one protectant selected from the group consisting of alkanolamides, alkyl ether sulfonates, acetylenic diols, alkyl ether carboxylic acids or salts thereof and mixtures thereof.  
   
   
       23 . A method as in  claim 22  wherein said polymeric container comprises a polyalkylene terephthalate.  
   
   
       24 . A method as in  claim 22  wherein said at least one lubricant is selected from the group consisting of silicones, nonionic surfactants, fatty acids or salts thereof, amines, amine acetates, and mixtures thereof.  
   
   
       25 . A method as in  claim 24  wherein said at least one lubricant is a nonionic surfactant which is an ethylene oxide/propylene oxide block copolymer.  
   
   
       26 . A method as in  claim 25  wherein said at least one lubricant further comprises hydrogen peroxide.  
   
   
       27 . A method as in  claim 26  wherein said at least one protectant is an alkanolamide, an alkyl ether carboxylic acid or salt thereof, or a mixture thereof.  
   
   
       28 . A method as in  claim 24  wherein said at least one lubricant is a salt of oleic acid  
   
   
       29 . A method as in  claim 22  wherein said at least one lubricant is a silicone or amine acetate, and at least one protectant is an acetylenic diol at a concentration of about 1 wt-% or less.  
   
   
       30 . A method as in  claim 22  wherein said at least one lubricant is a silicone, a fatty acid or salt thereof, an amine acetate or mixture thereof, and at least one protectant is an alkyl ether sulfonate at a concentration of greater than about 5 wt-% to about 15 wt-%.  
   
   
       31 . A method as in  claim 22  wherein said at least one lubricant is a fatthy acid or salt thereof a nonionic surfactant, an amine acetate or mixture thereof, and at least one protectant is an alkyl ether carboxylic acid or salt thereof employed at a concentration of about 5 wt-% to about 10 wt-%.  
   
   
       32 . A method as in  claim 31  wherein said at least one lubricant is a nonionic surfactant which is an ethylene oxide/propylene oxide block copolymer.