Cleaning and disinfecting composition

Patent metadata

Field	Value
Publication number	US-10307498-B2
Application number	US-201715485525-A
Country	US
Kind code	B2
Filing date	Apr 12, 2017
Priority date	Nov 10, 2015
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

The disclosed invention relates to a two-part liquid composition for cleaning and disinfecting a substrate, comprising: (A) a disinfectant medium comprising peracetic acid; and (B) a supplemental medium comprising a non-enzymatic cleaner, a corrosion inhibitor, and a chelator. The supplemental medium (B) may further comprise an enzymatic cleaner, a surfactant, a buffer, a pH modifier, or a mixture of two or more thereof. The substrate may be a medical device, for example, an endoscope.

First claim

The invention claimed is:

1. A process for cleaning and disinfecting a substrate contaminated with living microorganisms using a two-part liquid composition comprising components (A) and (B), wherein component (A) comprises a disinfectant medium comprising from about 5% to about 60% by weight of the disinfectant medium of peracetic acid, acetic acid, hydrogen peroxide and from about 0.5% to about 2% by weight of the disinfectant medium of sulfuric acid, wherein the pH of the disinfectant medium is from about 1 to about 8; and component (B) comprises a supplemental medium comprising an enzymatic cleaner, a non-enzymatic cleaner, a corrosion inhibitor and a chelator; wherein the non-enzymatic cleaner comprises an alkanol amine, a polyalkylene glycol, an alkyl diproprionate, an alkyl dialkylamine oxide, or a mixture of two or more thereof, wherein the volumetric ratio of (a) to (B) is in the range from about 5:1 to 1:5; the process comprising: contacting the substrate with the supplemental medium (B) and the disinfectant medium (A) to clean and disinfect the substrate.

2. The process of claim 1 wherein the substrate is made of a material comprising brass, copper, aluminum, stainless steel, carbon steel, plastic, glass, or a combination of two or more thereof.

3. The process of claim 1 wherein the substrate comprises a medical, dental, pharmaceutical, veterinary or mortuary instrument or device.

4. The process of claim 1 wherein the substrate comprises an endoscope.

5. The process of claim 4 wherein the endoscope comprises a rigid endoscope.

6. The process of claim 4 wherein the endoscope comprises a flexible endoscope.

7. The process of claim 1 wherein the process is conducted at a temperature in the range from about 15° C. to about 60° C.

8. The process of claim 1 wherein the substrate is cleaned and sterilized.

9. The process of claim 1 wherein supplemental medium (B) further comprises a surfactant, a buffer, a pH modifier or a mixture of two or more thereof.

10. The process of claim 1 wherein the alkanol amine comprises monoethanol amine, diethanol amine, triethanol amine, or a mixture of two or more thereof.

11. The process of claim 1 wherein the polyalkylene glycol comprises polyethylene glycol, polypropylene glycol, or a mixture thereof.

12. The process of claim 1 wherein the polyalkylene glycol comprises polyethylene glycol.

13. The process of claim 1 wherein the alkyl diproprionate comprises an octyl diproprionate.

14. The process of claim 1 wherein the alkyl dialkylamine oxide comprises octyl dimethylamine oxide.

15. The process of claim 1 wherein the supplemental medium (B) comprises monoethanolamine, triethanolamine, octyldimethylamine oxide, polyalkylene glycol, octyl dipropionate, or a mixture of two or more thereof.

16. The process of claim 1 wherein the supplemental medium (B) comprises from about 0.1 to about 25% by weight of the non-enzymatic cleaner.

17. The process of claim 1 wherein the enzymatic cleaner comprises a lipase, an amylase, a carbohydrase, a protease, or a mixture of two or more thereof.

18. The process of claim 1 wherein the enzymatic cleaner comprises a proteolytic enzyme.

19. The process of claim 1 wherein the enzymatic cleaner comprises a subtilisin.

20. The process of claim 1 wherein the enzymatic cleaner comprises a protein hydrolyzing enzyme, a protein digesting enzyme, or a mixture thereof.

21. The process of claim 1 wherein the supplemental medium (B) comprises from about 0.2% to about 25% by weight of the enzymatic cleaner.

22. The process of claim 9 wherein the buffer comprises an alkali metal phosphate, an alkali metal carbonate, or a mixture thereof.

23. The process of claim 9 wherein the supplemental medium (B) comprises up to about 15% by weight of the buffer.

24. The process of claim 1 wherein the corrosion inhibitor comprises benzotriazole, tolyltriazole, sodium salt of benzotriazole, sodium salt of tolyltriazole, aminotrimethylene phosphonic acid, octyl betaine, a carboxylic acid, ethanolamine, phosphonobutane tricarboxylic acid, or a mixture of two or more thereof.

25. The process of claim 1 wherein the supplemental medium (B) comprises from about 0.1% to about 10% by weight of the corrosion inhibitor.

26. The process of claim 1 wherein the chelator comprises ethylenediaminetetraacetic acid, hydroxyethylidenediphosphonic acid, sodium salt of ethylenediaminetetraacetic acid, sodium salt of hydroxyethylidenediphosphonic acid, aminotrimethylene phosphonic acid, a polycarboxylic acid, tetrasodium iminodisuccinate, carboxymethyl inulin, sodium borate, methylglycine diacetic acid, or a mixture of two or more thereof.

27. The process of claim 1 wherein the chelator comprises citric acid.

28. The process of claim 1 wherein the supplemental medium (B) comprises from about 0.1 to about 70% by weight of the chelator.

29. The process of claim 9 wherein the buffer comprises an amine, a carboxylic acid, a phosphate, a carbonate, or a mixture of two or more thereof.

30. The process of claim 9 wherein the supplemental medium (B) comprises from about 1 to about 15% by weight of the buffer.

31. The process of claim 9 wherein the surfactant comprises a detergent, wetting agent, emulsifier, foaming agent and/or dispersant.

32. The process of claim 9 wherein the surfactant comprises a compound that contains at least one hydrophobic group and at least one hydrophilic group.

33. The process of claim 9 wherein the surfactant comprises a water insoluble component and a water soluble component.

34. The process of claim 9 wherein the surfactant comprises an anionic, cationic, zwitterionic and/or nonionic compound.

35. The process of claim 9 wherein the surfactant comprises one or more polyalkylene glycol ethers, alkylarylsulfonates, amine oxides, poly(oxyalkylene) compounds, block copolymers comprising alkylene oxide repeat units, carboxylated alcohol ethoxylates, ethoxylated alkyl phenols, ethoxylated amines, ethoxylated amides, oxiranes, ethoxylated fatty acids, ethoxylated fatty esters, ethoxylated oils, fatty esters, fatty acid amides, glycerol esters, glycol esters, sorbitan esters, imidazoline and/or derivatives thereof, lecithin and/or derivatives thereof, lignin and/or derivatives thereof, glycerides and/or derivatives thereof, olefin sulfonates, phosphate esters and/or derivatives thereof, propoxylated and/or ethoxylated fatty acids and/or alcohols, alkyl phenols, sorbitan and/or derivatives thereof, sucrose esters and/or derivatives thereof, sulfates and/or alcohols and/or ethoxylated alcohols of fatty esters, sulfonates of dodecyl and/or tridecyl benzenes, condensed naphthalenes, sulfosuccinates and/or derivatives thereof, tridecyl and/or dodecyl benzene sulfonic acids, octyl betaine, or a mixture of two or more thereof.

36. The process of claim 9 wherein the concentration of the surfactant in the supplemental medium (B) is in the range up to about 25% by weight.

37. The process of claim 1 wherein the supplemental medium (B) further comprises one or more scale inhibitors, preservatives, defloculents, suspension agents, metal passivators, thickening agents, antifoam agents, foam enhancing agents, oil removal agents, sequestrati

Assignees

• American Sterilizer Co

Inventors

• Franciskovich Phillip P
• Rosenhamer Donald G
• Fix Kathleen A

Classifications

• A61L2103/15

  Laboratory, medical or dentistry appliances, e.g. catheters or sharps · CPC title

• C11D3/33

  Amino carboxylic acids · CPC title

• C11D7/263

  Ethers · CPC title

• C11D3/30

  Amines; Substituted amines {; Quaternized amines} · CPC title

• C11D1/722

  Ethers of polyoxyalkylene glycols having mixed oxyalkylene groups; {Polyalkoxylated fatty alcohols or polyalkoxylated alkylaryl alcohols with mixed oxyalkylele groups (C11D1/721 takes precedence)} · CPC title