Lubricating solutions are used on conveying systems in the beverage industry during the filling of containers with beverages. Lubricating compositions of the present invention, especially those designed for use in beverage conveying systems for contained beverages, comprise at least the following components: a) an alkyl alkoxylated (e.g., ethoxylated or propoxylated, preferably ethoxylated) phosphate ester, b) aryl (e.g., aromatic, such as phenol) alkoxylated (e.g., ethoxylated or propoxylated) phosphate ester, c) an aromatic or linear quaternary ammonium antimicrobial agent, and d) a liquid carrier, such as water. These lubricating solutions are capable of providing good lubricity and antimicrobial activity over a prolonged time.

Claims

20 · 2 independent · depth 3

20 granted claims

›1.independentAn antimicrobial conveyor lubricant comprising: a) an alkyl phosphate ester, b) an aryl phosphate ester, c) a quaternary ammonium antimicrobial agent,…+9

›2.↳ 1The lubricant of claim 1 wherein said alkyl phosphate ester and said aryl phosphate ester are present in a weight to weight ratio of 1.5:1 to 10.0:1 w…d2

›3.↳ 1The lubricant of claim 1 wherein the total weight of said alkyl phosphate ester and said aryl phosphate ester are present in a weight to weight ratio …d2

›4.↳ 1The lubricant of claim 1 wherein sodium hydroxide is present in said lubricant.d2

›5.↳ 1The lubricant of claim 1 wherein a chelating agent for divalent cations is present in said lubricant.d2+1

›7.↳ 1The lubricant of claim 1 wherein said aryl phosphate ester comprises a phenol ester wherein said phenol group is not substituted with alkyl groups.d2

›8.↳ 1The lubricant of claim 1 wherein the pH of the lubricant is less than 8.5.d2

›9.↳ 1The lubricant of claim 1 wherein the pH of the lubricant is between 4.5 and 8.0.d2

›10.↳ 1The lubricant of claim 1 comprising water, C.sub.10-12 alkyl phosphate ester, 5 ethylene oxide units, ethylenediamine tetraacetic acid alkalating agen…d2

›11.independentA process for lubricating a conveyor used to transport containers, said process comprising applying a composition to the conveying surface of a convey…+9

›12.↳ 11The process of claim 11 wherein said alkyl phosphate ester and said aryl phosphate ester are present in a weight to weight ratio of 1.5:1 to 10.0:1 wi…d2

›13.↳ 11The process of claim 11 wherein the total weight of said alkyl phosphate ester and said aryl phosphate ester are present in a weight to weight ratio o…d2

›14.↳ 11The process of claim 11 wherein sodium hydroxide is present in said lubricant.d2

›15.↳ 11The process of claim 11 wherein a chelating agent for divalent cations is present in said lubricant.d2+1

›17.↳ 11The process of claim 11 wherein said aryl phosphate ester comprises a phenol ester wherein said phenol group is not substituted with alkyl groups.d2

›18.↳ 11The process of claim 11 wherein the pH of the lubricant is less than 8.5.d2

›19.↳ 11The process of claim 11 wherein the pH of the lubricant is between 4.5 and 8.0.d2

›20.↳ 11The process of claim 11 wherein said composition comprises water, C.sub.10-12 alkyl phosphate ester, ethylene diamine tetraacetic acid or its salts, a…d2

Classifications

3 codes

USPC · US Patent Classification

508/174508/438508/431

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Jacqueline V. Howard

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