Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – With halogen – nitrogen – oxygen – or phosphorus containing...
Reexamination Certificate
2001-06-11
2002-05-28
Boyer, Charles (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
With halogen, nitrogen, oxygen, or phosphorus containing...
C510S238000, C510S237000, C510S362000, C510S384000, C510S413000, C510S421000, C510S480000, C510S504000, C510S436000, C510S319000, C510S391000, C510S356000, C510S477000
Reexamination Certificate
active
06395698
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a disinfectant and hard surface cleaning formulation which exhibits improved rust inhibiting properties. More particularly, the invention relates to a quaternary ammonium formulation for use in disinfecting metal surfaces and which prevents or inhibits rust formation on such metal surfaces.
2. Related Art
Public health has been a long time concern of both the public and private sectors. Recently, increased concern has emerged regarding whether public health products used to kill microorganisms pathogenic to man on inanimate surfaces and objects in hospital, schools, restaurants, and homes work as claimed on the label. The private and public sector communities, including competitor registrants, have made the Environmental Protection Agency (EPA) aware of sterilizers and hospital disinfectants which may be ineffective.
In partial solution to this problem, disinfecting solutions of quaternaries can be used as hard surface disinfectants, sanitizers, fungicides, virucides, germicides, germistats, bactericides, bacteriostats , as well as mold and mildew control agents. Also, quaternaries can be used as slimicides for use in the manufacture of paper and paperboard that contact food, algaecides for use in pools and/or recirculating water cooling towers, and incorporated into wood preservatives. Quaternaries have a number of other related uses due to their broad spectrum, efficacy, and physical/chemical properties. They also enhance the cleaning ability of detergent formulations.
The use of quaternary ammonium compounds, in conjunction with a nonionic surfactant to provide sanitizing, disinfecting and germicidal formulations, have been described in several United States patents including U.S. Pat. No. 3,539,520, issued to Canto et al., teaching certain detergent/sanitizing formulations which are based on aqueous mixtures of quaternary ammonium compounds, acting as the germicidal agent, in conjunction with nonionic surfactants such as alkoxy block copolymers. U.S. Pat. No. 6,143,710 issued to Lu et al. discloses disinfecting and cleaning composition in concentrated form comprising a quaternary ammonium compound, a nonionic surfactant and a mitigating compound selected from ethoxycellulose, polyalkylene glycol, alkylamidopropylbetains and alkylpolyalkoxylates among other conventional additives. U.S. Pat. No. 5,454,984 issue to Graubart et al. discloses quaternary ammonium compounds as germicidal active agents in conjunction with nonionic surfactants.
Though quaternaries have several beneficial aspects, they have several negative ones as well. For instance, quaternaries are difficult to use in formulations since they lack compatibility with many compounds. For instance, anionics neutralize quaternaries and may precipitate them as insolubles, thereby rendering them ineffective. Another problem with quaternary solutions is the severe rusting and corrosion that they cause due to the dissociation of chloride from the quaternary compound which reacts with polar water to take on the characteristics of hydrochloric acid.
Corrosion is a particular disadvantage when using quaternary ammonium compounds with metal machinery and equipment. There is the need to include a corrosion inhibitor in the formulation to suppress the corrosion of the ferrous metal promoted by the quaternary ammonium formulation. Corrosion inhibitors such as polycarboxylic acids and phosphate esters may prove to be only moderately effective in reducing rust while adding unwanted cost to the process. Accordingly, there is a need in the industry for a formulation which prevents the above mentioned problems without exhibiting deleterious effects on the metal which comes in contact with the formulation.
A quaternary formulation for use in a sanitizing/disinfecting solution disclosed in the present invention utilizes cationic compounds which are compatible with quaternaries and provide corrosion inhibiting properties to ferrous metal surfaces. The quaternary formulation of the present invention also includes a non-ionic surfactant to increase the surface cleaning action. Furthermore, the formulation of the present invention is known to be safe when used as directed.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a quaternary disinfecting/sanitizing solution which inhibits the corrosion of ferrous metal surfaces and a method for using the formulation.
Accordingly, the present invention is directed to a disinfecting/sanitizing and hard surface cleaning formulation which exhibits corrosion inhibiting properties. The formulation, in addition to a blend of quaternary ammonium chlorides, includes a blend of a cationic solvent, a non-ionic surfactant, a sequestrant, and a diluent.
In accordance with the present invention, certain quaternary ammonium formulations have been found to be particularly effective to prevent the transfer of plant diseases from field to field and orchard to orchard when the equipment and machinery used in the fields and orchards are coated with the present formulation. Furthermore, it has been found that the present formulation, when applied to the equipment and machinery, unexpectedly eliminates or reduces the corrosion of the metal equipment and machinery used in the fields and orchards.
The quaternary ammonium formulation of the present invention comprises a mixture of n-alkyl dimethyl benzyl ammonium chloride, octyl decyl dimethyl ammonium chloride, dioctyl dimethyl ammonium chloride and didecyl dimethyl ammonium chloride; an alkanolamine diluent; an organophosphonic acid sequestrant; an ethoxylated long chain alcohol; and water (Tap). These formulations include highly active, broad spectrum quaternaries which are extremely effective in hard water up to about 400 ppm hardness (calculated as CaCO
3
) in the presence of about 5% contamination. The quaternary ammonium formulation is particularly effective as a disinfectant; cleaner; mildewstat; sanitizer (for non-food contact surfaces); deodorizer for hospitals, institutions, industrial and school use; and for harvesting, handling, storage, and transportation equipment.
DETAILED DESCRIPTION
The present invention described herein sets forth a unique formulation to clean various surfaces (including, but not limited to, non-food contact glass, metal, stainless steel, glazed porcelain, glazed ceramics, fiberglass, granite, marble, plastic, chrome, vinyl, tables, chairs, desks, bed frames, walls, cabinets, doorknobs, garbage cans, picnic tables, outdoor furniture, telephones, non-food contact counter tops, sinks refrigerator, exteriors, coolers, freezer exteriors, stove tops, appliances, non-food contact equipment, shelves, racks, carts, highchairs, shower stalls, shower doors and curtains, tubs and tiles, toilets, urinals, porcelain glazed tile and restroom fixtures, kennels and cages, windows and mirrors) in a number of different environments (including, but not limited to, hospitals, nursing homes, medical and dental offices and clinics, operating rooms, isolation wards, medical research facilities, day care centers and nurseries, restaurants and bars, cafeterias, institutional kitchens, fast food operations and food storage areas, supermarkets, convenience stores, retail and whole sale establishments, dressing rooms and laundries, crime scenes and funeral homes, institutional facilities, laboratories, factories, business and office buildings, restrooms, hotels and motels and transportation terminals, kitchens, bathrooms and other household areas, institutions, schools and colleges, churches, classrooms, athletic facilities and locker rooms, camp grounds, play grounds, and recreational facilities, food processing plants, dairy farms hog farms, poultry and turkey farms and egg processing plants, veterinary clinics, animal life science laboratories, kennels, breeding and grooming establishments, pet animal quarters, zoos, pet shops, and other animal care facilities, household and automotive garages, boats, ships, campers, trailers, mobile homes, cars,
Burlew James O.
Daun Dennis
DeWolf Robert H.
Boyer Charles
Graham R. William
Mason Chemical Company
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