# US 7,745,381 B2 · Lubricant for conveying containers

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- Number: US 7,745,381 B2
- Document ID: US7745381B2
- Status: Granted
- Kind: B2
- Application number: 11/351,863
- Filed: 2006-02-10
- Published: 2006-09-21
- Granted: 2010-06-29
- Earliest claimed: 2005-03-15
- Assignees: Ecolab Inc.
- Inventors: Arturo S. Valencia Sil; Lawrence A. Grab; Bruce E. Schmidt; David A. Halsrud; Guang-Jong Jason Wei; Eric D. Morrison; Hector R. DiBenedetto; Jessica L. Anacker; Richard D. Johnson; Megan W. Malvey; Scott P. Bennett; Stefan Seemeyer
- Web page: https://patentgrep.com/patent/US7745381B2

## CPC

- C10M 173/025: {for lubricating conveyor belts}
- B65G 45/02: Lubricating devices
- C10M 103/00: Lubricating compositions characterised by the base-material being an inorganic material (containing more than 10% water C10M173/00)
- C10M 133/06: having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M 155/02: Monomer containing silicon
- C10M 125/26: Compounds containing silicon or boron, e.g. silica, sand
- C10M 169/04: Mixtures of base-materials and additives
- C10M 2201/02: Water
- C10M 2201/10: Compounds containing silicon
- C10M 2201/102: Silicates
- C10M 2207/126: monocarboxylic
- C10M 2207/289: containing free hydroxy groups
- C10M 2209/104: of alkylene oxides containing two carbon atoms only
- C10M 2215/02: Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M 2215/04: having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M 2219/044: Sulfonic acids, Derivatives thereof, e.g. neutral salts
- C10M 2223/04: Phosphate esters
- C10M 2229/02: Unspecified siloxanes; Silicones
- C10M 2229/025: used as base material
- C10M 2229/041: containing aliphatic substituents
- C10M 2229/042: containing aromatic substituents
- C10M 2229/045: containing silicon-to-hydroxyl bonds
- C10M 2229/047: containing alkylene oxide groups
- C10M 2229/051: containing halogen
- C10N 2030/00: Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N 2030/02: Pour-point; Viscosity index
- C10N 2030/06: Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
- C10N 2030/40: {Low content or no content compositions}
- C10N 2040/38: {Conveyors or chain belts}
- C10N 2050/011: {Oil-in-water}
- C10N 2050/02: dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating
- C10N 2050/04: Aerosols
- C10N 2070/02: {Concentrating of additives}
- C10M: LUBRICATING COMPOSITIONS (well drilling compositions C09K8/02); USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C3/00, for plastics or substances in a plastic state, in general B29C33/56, for glass C03B40/02; textile lubricating compositions D06M11/00, D06M13/00, D06M15/00; immersion oils for microscopy G02B21/33)
- B65G: TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS (packaging B65B; handling thin or filamentary materials, e.g. paper sheets or thread, B65H; cranes B66C; portable mobile or lifting or hauling appliances, e.g. hoists, B66D; devices for lifting or lowering goods for loading or unloading purposes, e.g. fork-lift trucks, B66F9/00; emptying bottles, jars, casks, barrels or similar containers, not otherwise provided for, B67C9/00; delivering or transferring liquids B67D; filling or discharging vessels for liquefied, solidified or compressed gases F17C; pipe-line systems for fluids F17D)
- C10N: INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS

## Abstract

A method for lubricating the passage of a conveyor comprising applying an undiluted lubricant composition through non-energized nozzles to at least a portion of the conveyor, the lubricant composition comprising a silicone emulsion and a water-miscible lubricant, the lubricant composition having a viscosity of less than 40 centipoise when measured using a Brookfield viscometer with an RV2 spindle at a spindle speed of 20 RPM and the lubricant composition being substantially free of a triethanolamine salt of dodecyl benzene sulfonic acid.

## Claims

### Claim 1

A method for lubricating the passage of a container along a conveyor comprising applying a lubricant composition through non-energized nozzles to at least a portion of the container-contacting surface of the conveyor or at least a portion of the conveyor-contacting surface of the container, the lubricant composition comprising a silicone emulsion, wherein the lubricant composition contains less than about 500 ppm of triethanolamine salts of alkyl benzene sulfonic acid compounds.

### Claim 2 (depends on 1)

The method of claim 1, wherein the silicone emulsion includes emulsifiers other than triethanolamine salts of alkyl benzene sulfonic acid compounds.

### Claim 3 (depends on 1)

The method of claim 1, wherein the silicone emulsion includes emulsifiers selected from the group of linear alkyl phenol ethoxylates, branched alkyl phenol ethoxylates, linear primary alcohol ethoxylates, branched primary alcohol ethoxylates, linear secondary alcohol ethoxylates, branched secondary alcohol ethoxylates, poly alkylene oxide modified polydimethylsiloxanes, sorbitan derivatives, sodium alkyl aryl polyether sulfonate compounds, sodium alkyl aryl sulfonate compounds trim ethyl ammonium salts, and mixtures thereof.

### Claim 4 (depends on 1)

The method of claim 1, wherein the lubricant composition comprises:
a. from about 0.0015 to about 50 wt. % of a silicone material; and
b. from about 50 to about 99.999 wt. % water.

### Claim 5 (depends on 1)

The method of claim 1, wherein the viscosity of the lubricant composition is less than about 40 centipoises when measured using a Brookfield viscometer with an RV2 spindle at a spindle speed of 20 RPM.

### Claim 6 (depends on 1)

The method of claim 1, wherein the lubricant is applied from a spray nozzle at a pressure of between 5 and 80 psi.

### Claim 7 (depends on 1)

The method of claim 1, wherein the lubricant composition is on for a period of time and off for a period of time and the ratio of off time to on time is at least 5:1.

### Claim 8 (depends on 1)

The method of claim 1, wherein the lubricant has less than 5% failure when measured using the PET compatibility test.

### Claim 9 (depends on 1)

The method of claim 1, wherein the composition maintains an average coefficient of friction of between about 0.05 and 0.25 over the entire period of use.

### Claim 10 (depends on 1)

The method of claim 1, wherein the lubricant composition is not diluted prior to spraying.

### Claim 11 (depends on 1)

The method of claim 1, wherein the lubricant composition is diluted in line prior to use with a ratio of lube concentrate to water equal to between 115 and 111 000.

### Claim 12 (depends on 1)

The method of claim 1, wherein the lubricant composition is substantially free of triethanolamine salts of alkyl benzene sulfonic acid compounds.

### Claim 13 (depends on 1)

The method of claim 1, wherein the lubricant composition is substantially free of an anionic surfactant.

### Claim 14 (depends on 1)

The method of claim 1, wherein the lubricant composition further comprises an additional functional ingredient selected from the group consisting of water miscible lubricants, hydrophilic diluents, antimicrobial agents, stabilizing/coupling agents, detergents and dispersing agents, anti-wear agents, viscosity modifiers, sequestrants, corrosion inhibitors, film forming materials, antioxidants, antistatic agents and mixtures thereof.

### Claim 15 (depends on 1)

The method of claim 1, wherein the lubricant composition further comprises a water-miscible lubricant selected from the group consisting of a phosphate ester, an amine, an amine derivative, and mixtures thereof.

### Claim 16 (depends on 1)

The method of claim 1, wherein the lubricant composition is applied to a first portion of the conveyor and maintains a first coefficient of friction and a second portion of the conveyor and maintains a second coefficient of friction and the first coefficient of friction and the second coefficient of friction are not the same.

### Claim 17 (depends on 1)

The method of claim 1, wherein the alkyl benzene sulfonic acid is dodecyl benzene sulfonic acid.

### Claim 18

A method for lubricating the passage of a container along a conveyor comprising applying an undiluted lubricant composition through non-energized nozzles to at least a portion of the conveyor, the lubricant composition comprising a silicone emulsion selected from the group consisting of Lambent Technologies E2175 emulsion, Lambent Technologies E2140 emulsion, Lambent Technologies E2140FG emulsion, Dow Corning HV600 emulsion, Dow Corning 1664, Dow Corning 1101 emulsion, Dow Corning 346 emulsion, General Electric SM 2068A emulsion, General Electric SM 2128 emulsion, General Electric SM 2135 emulsion, General Electric SM 2138 emulsion, General Electric SM 2140 emulsion, General Electric SM 2154 emulsion, General Electric SM 2162 emulsion, General Electric SM 2163 emulsion, General Electric SM 2167 emulsion, General Electric SM 2169 emulsion, General Electric SM 2725 emulsion, Shin-Etsu KM 901 emulsion, Shin-Etsu KM 902 emulsion, Wacker Fluid Emulsion E10, Wacker Fluid Emulsion E1044, and mixtures thereof, and a water-miscible lubricant, the lubricant composition having a viscosity of less than 40 centipoise when measured using a Brookfield viscometer with an RV2 spindle at a spindle speed of 20 RPM and the lubricant composition being substantially free of a triethanolamine salt of dodecyl benzene sulfonic acid.

### Claim 19 (depends on 18)

The method according to claim 18, wherein the lubricant has less than 5% failure when measured using the PET compatibility test.