Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Heterocyclic ring compound; a heterocyclic ring is one...
Patent
1997-02-03
1998-05-05
Howard, Jacqueline V.
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Heterocyclic ring compound; a heterocyclic ring is one...
508285, C10M17302
Patent
active
057474311
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to lubricant compositions, and more -specifically to lubricant compositions for use in lubricating the tracks which convey bottles, cans and similar containers and packages for beverages and other foodstuffs from one station to another in a packaging plant.
BACKGROUND OF THE INVENTION
Beverages are sold in a variety of containers such as glass bottles, plastics bottles, plastic containers, cans, or waxed carton packs. These containers are conveyed through a number of stations in a plant where they are filled with the desired beverage; the containers are conveyed from one station to another by a track which is usually of stainless steel when the containers are glass bottles, or of a plastics material such as polypropylene or an acetal resin (sold under the trademark Delrin) when the containers are other than glass bottles. Such tracks will hereinafter be referred to as "conveyor track".
When the containers are being filled and transported, blockages occasionally occur preventing the free movement of the containers while the conveyor continues to move. In such instances it is important that the conveyor track is properly lubricated so that the track can continue to move even though the containers on the track are temporarily prevented from advancing.
In order to ensure smooth operation of the filling process, it is imperative to ensure that the conveyor track is properly lubricated and cleaned. If the conveyor track is not properly lubricated, the containers can easily fall over or fail to stop moving when they reach the appropriate station in the plant. This can cause serious disruption to the efficient operation of the filling process.
Lubricant compositions which are currently used for lubricating and cleaning conveyor track are generally of three main types:
Aqueous solutions of fatty acids are not suitable for use in areas of hard water, unless they are stabilized by the incorporation of a complexing agent such as ethylenediamine tetra-acetic acid (EDTA).
A problem encountered with the conveyor track is the need to keep the containers as free from microbial contamination as possible. This is especially important where soil spillage occurs, for example spillage of beer, orange juice, cola and other beverages.
We have now produced a new lubricating composition for use in lubricating conveyor track which has the advantage that it has biocidal properties as well as providing the necessary lubrication. Additionally, the biocidal properties do not appear to be detrimentally influenced by typical soil spillage.
SUMMARY OF INVENTION
According to one aspect of the present invention, there is provided a concentrate which, upon dilution with water, forms a lubricant composition for use as a lubricant for conveyor track. The concentrate comprises the following components: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 are the same or different and are each --H or --A --Y, in which A is a C.sub.7 to C.sub.20 saturated or unsaturated, linear or branched chain alkylene group, B is a C.sub.1 to C.sub.20 saturated or unsaturated, linear or branched chain alkylene group, Y is H, NH.sub.2, OH, or COOM.sub.1 in which M.sub.1 is H or a Group 1 metal ion, and X is H, NH.sub.2, OH, COOM.sub.2 or --NH--CO--R.sub.4, in which M.sub.2 is the same or different from M.sub.1 and is H or a Group 1 metal ion and R.sub.4 is a C.sub.1 to C.sub.20 saturated or unsaturated, linear or branched chain alkyl group; and in water.
Generally, R.sub.4 is a C.sub.6 to C.sub.20 saturated or unsaturated linear or branched chain alkyl group and, preferably, at least one of R.sub.1, R.sub.2, R.sub.3, B and R.sub.4 includes a saturated or unsaturated linear alkylene group of at least 12 carbon atoms or a branched chain alkylene group also of at least 12 carbon atoms. This imparts useful lubricant properties to the concentrate. In a preferred embodiment, group A of the cyclic imidazoline has from 12 to 18 carbon atoms, most preferably 17 carbon atoms, so that the lubricity of the lubricant comp
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Abstract, JP1096294, Japanese patent Sterilising Lubricant for Conveyor BeltApr. 14, 1989.
Glozbach Eberhard
Taylour James
Diversey Lever Inc.
Honig Milton L.
Howard Jacqueline V.
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