EP1294835A1 - Lubrifiant pour transporteur - Google Patents

Lubrifiant pour transporteur

Info

Publication number
EP1294835A1
EP1294835A1 EP01945465A EP01945465A EP1294835A1 EP 1294835 A1 EP1294835 A1 EP 1294835A1 EP 01945465 A EP01945465 A EP 01945465A EP 01945465 A EP01945465 A EP 01945465A EP 1294835 A1 EP1294835 A1 EP 1294835A1
Authority
EP
European Patent Office
Prior art keywords
composition
conveyor
lubricant
water
humectant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01945465A
Other languages
German (de)
English (en)
Inventor
Christopher William Wederell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pentasol (FB) Ltd
Original Assignee
Pentasol (FB) Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB0015480A external-priority patent/GB0015480D0/en
Priority claimed from GB0028246A external-priority patent/GB0028246D0/en
Application filed by Pentasol (FB) Ltd filed Critical Pentasol (FB) Ltd
Publication of EP1294835A1 publication Critical patent/EP1294835A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • C10M173/025—Lubricating compositions containing more than 10% water not containing mineral or fatty oils for lubricating conveyor belts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/04—Hydroxy compounds
    • C10M129/06—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M129/08—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least 2 hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/04—Hydroxy compounds
    • C10M129/10—Hydroxy compounds having hydroxy groups bound to a carbon atom of a six-membered aromatic ring
    • C10M129/14—Hydroxy compounds having hydroxy groups bound to a carbon atom of a six-membered aromatic ring containing at least 2 hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/68—Esters
    • C10M129/74—Esters of polyhydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/68—Esters
    • C10M129/76—Esters containing free hydroxy or carboxyl groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
    • C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
    • C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M133/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/10—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate
    • C10M145/12—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate monocarboxylic
    • C10M145/14—Acrylate; Methacrylate
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    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
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    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/40—Polysaccharides, e.g. cellulose
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    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • C10M171/001—Electrorheological fluids; smart fluids
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/02—Water
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
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    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/024—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings having at least two phenol groups but no condensed ring
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    • C10M2207/28—Esters
    • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
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    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
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    • C10M2207/283—Esters of polyhydroxy compounds
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    • C10M2207/287—Partial esters
    • C10M2207/288—Partial esters containing free carboxyl groups
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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    • C10M2207/28—Esters
    • C10M2207/287—Partial esters
    • C10M2207/289—Partial esters containing free hydroxy groups
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    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084—Acrylate; Methacrylate
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
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    • C10M2209/12—Polysaccharides, e.g. cellulose, biopolymers
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    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
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    • C10M2215/24—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions having hydrocarbon substituents containing thirty or more carbon atoms, e.g. nitrogen derivatives of substituted succinic acid
    • C10M2215/26—Amines
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/30—Refrigerators lubricants or compressors lubricants
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    • C10N2040/32—Wires, ropes or cables lubricants
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    • C10N2040/34—Lubricating-sealants
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    • C10N2040/36—Release agents or mold release agents
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    • C10N2040/38—Conveyors or chain belts
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    • C10N2040/40—Generators or electric motors in oil or gas winning field
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    • C10N2040/42—Flashing oils or marking oils
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    • C10N2040/44—Super vacuum or supercritical use
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/50—Medical uses
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    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/01—Emulsions, colloids, or micelles

Definitions

  • This invention relates to lubricants, particularly but not exclusively to conveyor lubricants and to their use in a method of lubrication.
  • Conveyor lubricants are used widely, particularly in the food and beverage industries, in order to lubricate and clean a variety of belt-type and other conveyors. Conveyors are used, for example, to move bottles, jars, cans and the like around the factory and the lubricant allows the articles to slip relative to the surface of the conveyor, so preventing them from falling over or f om falling off the conveyor. In addition, in marshalling areas where the articles congregate before a subsequent process, the lubricant enables the conveyor to slip under the articles in a continuous fashion.
  • conveyor lubricants have been those based on soap solutions. These solutions typically also contain agents to control water hardness and may also contain surfactants and organic solvents. Other lubricants include those based on synthetic detergents and these compositions typically also contain organic solvents. More recently, dry conveyor lubricants based on, for example, fluorinated plastics such as PTFE (polytetrafluoroethylene) have been introduced by the lubricant industry. These lubricants typically have the consistency of a creamy liquid suspension and contain a small quantity of water and some organic solvents. Conventional lubricants of the soap-based or synthetic detergent-based type are, for example, disclosed in DE 4419926, WO 92/13050, WO 94/03562 and US 3404,090.
  • DE 4419926 discloses a detergent composition based on special surfactants.
  • the composition comprises an amphoteric/zwitterionic surfactant, a mixed ether and an alkyl and/or alkenyloligoglycoside.
  • the emphasis in this publication is on the properties of the surfactant.
  • WO 92/1 ⁇ 050 discloses a conventional lubricant based upon diamine acetate salts and is said to have good anitmicrobial properties.
  • the diamine acetate salts serve as the main lubricating component and, if desired, an alcohol can be added to the composition as a solvent. Up to 20% by weight of the composition of a non- ionic surfactant can also be included in order to enhance the lubricity.
  • the lubricant compositions to be used are prepared by diluting a concentrate in water by a factor of about 200.
  • WO 94/03562 (or equivalent publication US 5474692) describes a conventional synthetic-type lubricant based on fatty amines. Up to 20% of an auxiliary component, which can be an alcohol, can be used as a solubiliser. The lubricant compositions are diluted with water by a factor of preferably between 300 and 500 before use.
  • US 3404090 describes a conventional water-based lubricant composition based upon the combination of two surfactants. These are an N- secondary-aUphatic-hexahydropyrimidine-2-thione and a bis(2-hydroxyethyl) aliphatic ami e oxide.
  • the surfactants are said to work synergistically and thus give increased lubrication.
  • the concentration of each surfactant in the formulation can be as low as twenty parts per million.
  • Soap-based lubricants also often lead to undesirable foaming.
  • the foam can work its way up the sides of the articles on the conveyor, which may necessitate further cleaning, and may potentially have an adverse effect upon any labelling on the article.
  • Synthetic detergent-based lubricants share many of the disadvantages of the traditional soap-based lubricants, although they tend to be less susceptible to bacterial attack and suffer less from problems associated with water-hardness. Nevertheless, in terms of lubricity, detergent-based lubricants generally perform less well than soap-based lubricants. Dry lubricants have the advantage of requiring much lower volumes of product than either soap- or detergent-based lubricants, but have generally not been well-received by industry.
  • Dry lubricants generally do not have any cleaning properties: in fact, they pick up dirt easily and so the conveyors quickly become dirty and soiled with used lubricant. Conveyors treated with dry lubricants are difficult to clean, and proper cleaning will normally necessitate the use of solvent-based cleaning fluids, which from a health and safety point of view is less than ideal. Owing to their consistency, the application of dry lubricants to the conveyor can be difficult to regulate and control. In addition, dry lubricants tend to be very persistent, adhering strongly not only to the conveyor but also to the bottom and sides of the articles thereon, which at best is undesirable and may require further cleaning, and at worst may have a deleterious effect on either the articles themselves or on any associated labelling. Also dry lubricants do not distribute easily throughout the conveyor system, meaning that many concealed components (eg wear strips) do not actually become lubricated at all.
  • lubricants are those based on gels.
  • US 4781847 describes one such gel lubricant composition.
  • the gel comprises water, 0.5 to 25 wt% polyalkylene glycol having a molecular weight of about 1000 to 15000, and an effective gelling amount of a viscosity modifier consisting of a mixture of at least two components.
  • the gels are described as being particularly useful in the installation of electrical and telephone cable in conduit.
  • This sort of gel composition is intended to dry out gradually, but is said to leave little residue upon evaporation of the liquid phase. Even after evaporation, the gel is said to maintain substantial lubricating properties and this appears to be because of the high level of polyalkylene glycol.
  • water-based conveyor lubricant composition comprising water, a viscosity modifier at a concentration of from 0.01% to 5% by weight of the composition, and a humectant.
  • the invention also provides a method of lubricating a conveyor, which method comprises applying to the conveyor a composition according to the invention.
  • a composition according to the invention we prefer to apply the composition directly, that is, without any need for dilution, although dilution of a concentrated solution of the composition prior to application can be employed if desired.
  • a viscosity modifier provides a lubricant composition with the consistency of a viscous liquid, and thus leads to a dramatic reduction in the quantity of water needed when compared to prior art water-based conveyor lubricants. This reduction is both in terms of the quantity of water needed for dilution of the product (which dilution is preferably not needed at all for the present composition), and in terms of the wastage which occurs through run-off of the lubricant from the conveyor.
  • the water is effectively kept in place on the conveyor system, thus minimising loss of product through unwanted run-off.
  • Water itself has a viscosity of 1 mPa s at 20°C, and traditional soap solutions have similar viscosities - typically ranging from about 1 mPa s to about 5 mPa s.
  • the viscosity of the present lubricant is much higher, being at least about 25 mPa s, and preferably greater than this. Owing to the reduced quantity of water needed, bacterial growth is kept to a minimum, which reduces build up of slime. Formulating to provide an appropriate viscosity enables good distribution of the lubricant throughout the conveyor system, and thus, in particular, provides good lubrication of concealed parts of the conveyor (such as wear strips).
  • the present lubricant composition provides good cleaning properties, and is itself easy to clean from the conveyor system.
  • the lubricant of the invention can be applied directly to the conveyor system without the need for dilution (although dilution can be used if desired), and displays substantially no foaming.
  • the present conveyor lubricant combines the advantages of known lubricants, whilst minimising the attendant disadvantages: thus excellent lubricity is achieved without significant water loss or soiling problems.
  • the viscosity modifier can be chosen from a wide variety of materials, so long as a suitably viscosified composition is provided.
  • suitable viscosity modifiers include cellulose derivatives, natural gums and gels, synthetic resins and polymers and surfactants.
  • cellulose derivatives we mean particularly to include non-ionic ethers of cellulose with methyl chloride, propylene oxide and/or ethylene oxide.
  • Examples include methyl cellulose (available under the trade names Benecel or Blanose from Hercules Limited of Salford, Lancashire), hydroxyethylcellulose or hydroxypropylcellulose (available under the trade names Natrosol and Klucel respectively from Hercules Limited), and a mixture of methyl cellulose, methyl hydroxyethylcellulose and methyl hydroxypropylcellulose (available under the trade name Culminal from Hercules Limited).
  • Other examples include products marketed by Twinstar under the names Akucell, Gabrose, Tylose H, and Tylose MH (which are, respectively, carboxymethylcellulose, carboxymethylcellulose, hydroxyethylcellulose, and methyl hydroxyethylcellulose).
  • Suitable natural gums and gels include gum arabic, pectin, alginates (eg agar and carageenans), tragacanth, guar gum, xanthan gum, and starch or modified starch.
  • Suitable synthetic resins include Carbopol resins (which are cross-linked acrylic polymers) available from Goodrich.
  • Various surfactants can, if desired, be used to provide an increase in viscosity, although high concentrations of surfactant are usually necessary, and so use of a surfactant as the viscosity modifier, though possible, is generally not preferred.
  • cellulose derivatives such as, for example, hydroxyethyl cellulose or hydroxymethyl cellulose as the viscosity modifier. Cellulose derivatives have the advantage of conferring good caustic resistance upon the lubricant thus enabling good toleration of alkali, where present.
  • viscosity will be at least in part determined by the rheology required by the particular application.
  • Cellulose derivatives for example, have the advantage of being generally pseudo-plastic, which means that the viscosity is reduced when the rate of shear is high. For a conveyor, this means that the lubricant will stay in place on the conveyor surface (i.e. not run off or flow), but that it will thin and flow easily when a force is applied (such as, for example, from a container or article on the conveyor).
  • the viscosity of the present lubricant can vary over a large range - from as low as about 25 mPa s up to about 100,000 mPa s. Such a range can be achieved using, for example, cellulose derivatives at a concentration (% by wt of composition) of from about 0.1% to about 2%. Typically, however, for many applications, a viscosity of from about 50 mPa s to a few thousand mPa s will normally be sufficient. Our preferred range is from about 100 to about 5000 mPa s. A preferred concentration of viscosity modifier is from 0.25 to 1.0 % by weight of the composition. The viscosity modifier is not used in a quantity which would cause gelling of the composition.
  • the exact viscosity can be varied according to the particular characteristics (such as, for example, the speed) of the conveyor to which the lubricant is applied. Thus, in a complete system involving several conveyors, for optimum performance, it may be advantageous to use several different lubricants, each with its own particular viscosity.
  • humectant An important feature of the present composition is the presence of a humectant, it being understood that two or more compatible humectants can be used of desired.
  • the humectant is needed to keep the lubricant moist and in a flowable condition, and to prevent it from drying out. Generally, quite a high level of humectant is required. Broadly speaking, quantities of between 5 and 80% by weight of the composition can be used, but we prefer to use between about 10 and 40% by weight, and most preferably between about 20 and 30% by weight of the composition.
  • Suitable humectants include, but are not limited to, for example, glycerin, triethanolamine, triacetin and diacetin, with glycerin being particularly preferred.
  • glycerin an amount of from 20 to 30% by weight is particularly preferred, with around 25% by weight being a typical concentration. If an insufficient quantity of humectant is used, the lubricant slowly dries out and becomes sticky, owing to a build up of residue from the viscosity modifier. Under these circumstances, the composition will not properly lubricate a conveyor and the articles moving thereon, and will lead to unwanted soiling of the equipment. Effectively, therefore, when a suitable quantity of humectant is used, it enables, together with the viscosity modifier, a sufficient quantity of water to be held in place, or "contained", within the composition so as to achieve good lubrication.
  • humectant we mean to include all those compounds which can retain or preserve moisture but are not in solid form in the lubricant composition.
  • hygroscopic compounds that is, those which absorb water.
  • Particularly preferred are those humectants which can absorb or "hold” in place a significant quantity of water relative to the weight of the humectant.
  • Compounds which can, for example, absorb at least one quarter of their own weight of water are preferred.
  • glycerin which absorbs at least 50% of its own weight of water
  • compounds with similar properties to glycerin are particularly advantageous.
  • compositions can most accurately be described as "viscous liquids" - they are not gels.
  • the conveyor lubricant also comprises one or more surfactant and/or one or more biocide.
  • a generalised conveyor lubricant composition is as follows:
  • Viscosity modifier 0.01 - 5 0.25 - 1.0
  • a surfactant in the conveyor lubricant in order to assist in wetting the surface of the conveyor when the lubricant is applied.
  • Any suitable surfactant can be used which provides good wetting properties without adversely affecting the properties of the conveyor lubricant.
  • polyethylene glycol 400 monolaurate is a particularly preferred surfactant, although many other similar compounds, as will be clear to the skilled man, may be used.
  • humectant and/or biocide Depending upon the type of humectant and/or biocide used, we have found that it is not always necessary to include a specific surfactant to improve wetting, since some suitable humectants and biocides (such as, for example, glycerin and tertiary alkyl amines) will in themselves provide sufficient surfactant properties to enable good wetting of the conveyor surface.
  • suitable humectants and biocides such as, for example, glycerin and tertiary alkyl amines
  • a biocidal agent is preferably included in the lubricant composition in order to kill bacteria and thus ensure little or no build-up of mould or slime. It is possible to use any suitable biocide, provided the agent exhibits no adverse effects upon the properties of the lubricant composition.
  • Suitable biocides include, for example, tertiary alkyl amines, such as bis(3-aminopropyl) dodecylamine, and triclosan with tertiary alkyl amines being particularly preferred.
  • the conveyor lubricant composition is provided with a pH of about 7, although this is not critical.
  • an amine-based biocide such as a tertiary alkyl amine
  • the consequent increase in alkalinity of the lubricant is preferably neutralised by including, for example, a corresponding amount of citric acid (or similar compound) in order to restore the pH balance.
  • the conveyor lubricant composition is preferably formulated by first mixing the viscosity modifier with the water.
  • warm water is employed and the solution containing viscosity modifier only is preferably stirred for about half-an- hour, or until the full required viscosity (and stability) is achieved.
  • humectant and any further ingredients are added to the composition as desired, by simple mixing and stirring.
  • the present conveyor lubricant has the advantage of being able to be directly applied to the conveyor at a desired point (or at several different points) in the conveyor system, without requiring any prior dilution of the lubricant, as is necessary with soap-based lubricants. Dilution of a concentrate can, however, be used if desired. This can help promote overall efficiency and economy within the factory. It is possible to apply the lubricant to the conveyor at the desired point by a variety of methods, although we prefer to apply the lubricant using a brush system. Alternatively, the lubricant can be sprayed on to the conveyor if desired, although this is not generally preferred, and may, in fact prove difficult if not impossible with lubricants of high viscosity. Generally, dosing intervals of at least one hour or more are typical for the present lubricants. There is substantially no drying out of the lubricant during these periods.
  • the conveyors we have in mind for which the present lubricant is particularly suitable are chain and slat type conveyors (either plastic or metal, for example) of the kind usually found in the bottling and canning industries.
  • the present lubricant is also of utility in conveyor systems moving a wide range of articles other than siinply bottles and cans including, for example, crates. It is essential that the components of the present lubricant are cornpafible with the articles to be moved along the conveyor.
  • soap solutions particularly at high concentrations
  • the present lubricant composition to have the advantage of being compatible with a very wide range of article materials, including PET.
  • Hydroxyethylcellulose (5g) was mixed with constant stirring to 740g of warm water (at approximately 40°C) for 30 ⁇ iinutes. Glycerin (250g), PEG 400 monolaurate (2.5g) and biocide (2.5g) were then added and the mixture stirred to provide a homogenous solution. The viscosity was 1000 mPa s.
  • Example 2 This shows the simplest kind of formulation.
  • Glycerin 2 10.0
  • the viscosity is approximately 1000 mPa s at 25°C.
  • the viscosity is approximately 100 mPa s at 25°C.
  • the viscosity is approximately 70 mPa s at 25°C.
  • the viscosity is approximately 1000 mPa s at 25°C.
  • the viscosity is approximately 1000 mPa s at 25°C.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

Cette invention concerne une composition lubrifiante pour transporteur contenant de l'eau, un modificateur de viscosité à une concentration comprise entre 0,01 % et 5 % en poids de cette composition et un humectant. Un tensioactif et un biocide sont de préférence inclus dans cette composition, l'humectant étant de préférence inclus à une concentration comprise entre 10 % et 40 % en poids de cette composition. Cette composition est supérieure aux lubrifiants aqueux à base de savon et de détergent classiques.
EP01945465A 2000-06-23 2001-06-22 Lubrifiant pour transporteur Withdrawn EP1294835A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB0015480A GB0015480D0 (en) 2000-06-23 2000-06-23 Conveyor lubricant
GB0015480 2000-06-23
GB0028246A GB0028246D0 (en) 2000-11-20 2000-11-20 Conveyor lubricant
GB0028246 2000-11-20
PCT/GB2001/002779 WO2001098441A1 (fr) 2000-06-23 2001-06-22 Lubrifiant pour transporteur

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Publication Number Publication Date
EP1294835A1 true EP1294835A1 (fr) 2003-03-26

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US (1) US20040053792A1 (fr)
EP (1) EP1294835A1 (fr)
AU (1) AU2001267680A1 (fr)
WO (1) WO2001098441A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040235680A1 (en) * 2002-09-18 2004-11-25 Ecolab Inc. Conveyor lubricant with corrosion inhibition
EP2698421B1 (fr) * 2012-08-15 2020-02-26 Sika Technology AG Lubrifiant à base d'eau
FI125548B (en) 2014-05-15 2015-11-30 Jarmat Oy LUBRICANT COMPOSITION

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US3526595A (en) * 1967-01-23 1970-09-01 Fairchild Chem Corp Lubricating compositions
US3404090A (en) * 1967-02-14 1968-10-01 Armour & Co Water base lubricant
US4257902A (en) * 1976-08-04 1981-03-24 Singer & Hersch Industrial Development (Pty.) Ltd. Water-based industrial fluids
DE3123726C2 (de) * 1981-06-15 1985-07-25 Ludwig Müller GmbH u. Co KG, 7100 Heilbronn Haftöle
US4378299A (en) * 1982-01-25 1983-03-29 American Colloid Company Cable lubricating composition and method
DE3540667C1 (de) * 1985-11-16 1987-04-09 Continental Gummi Werke Ag Montagepaste fuer Fahrzeugluftreifen
US4781847A (en) * 1986-05-08 1988-11-01 American Polywater Corporation Aqueous lubricant
US5002675A (en) * 1989-07-13 1991-03-26 Randisi Sal A Cable pulling compounds
US5182035A (en) * 1991-01-16 1993-01-26 Ecolab Inc. Antimicrobial lubricant composition containing a diamine acetate
PL307307A1 (en) * 1992-08-03 1995-05-15 Henkel Kgaa Lubricant concentrate and aqueous solution of a lubricant on the basis of fatty amines, method of obtaining them and their application
US5597786A (en) * 1994-05-31 1997-01-28 Nicca Chemical Co., Ltd. Lubricant for plastic working
DE4419926C1 (de) * 1994-06-08 1995-10-12 Henkel Kgaa Schwach schäumende Detergensgemische und wäßrige Kettengleitmittel

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US20040053792A1 (en) 2004-03-18
WO2001098441A1 (fr) 2001-12-27

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