Using sequentially applied treating agents

Disclosed is a multichannel drainage system for separately draining the centrifugally broadcast residue of different liquids sequentially dispensed on the top surface of a semiconductor wafer spun on a spindle at a work station. The multichannel drainage system includes a cup assembly mounted on a cup...     

A restroom is automatically cleaned by moving a vertically disposed spray boom in a manner so as to generally track the interior periphery of the restroom enclosure to spray both the inner sidewall of the enclosure and the fixtures mounted therewithin with cleansing fluid, the fluid then being drained...     

An electrically conductive resinous composition of a copper flake, the surface of which has been cleaned by removing therefrom impurities and/or oxides, a resinous binder, an amount of copper flake in said resinous composition being from 25 to 70 percent, the impurities in said copper flake being less...     

A process for descaling a metallic body, wherein the body is immersed in a bath of a molten oxidizing salt, and subsequently in an electrolyte of an aqueous solution of at least one neutral salt from the group consisting of the chloride, sulfate and nitrate of an alkali metal or ammonium.

An industrial cleaning system comprising a method and apparatus for substantially inverting a container to be cleaned into a washing space, temporarily enclosing the space, discharging cleaning fluids into and onto the container in a predetermined cycle of steps, removing the enclosure, and restoring...     

Compositions are provided for the effective cleaning of soft and silicone contact lenses by soaking the lenses for a time sufficient to remove adherent residues in a solution containing an epoxy modified silicone surfactant and a fatty acid amide (or nitrogen analog thereof) surfactant, which may be...     

Silicone and/or hydrophilic soft contact lenses are freed of proteinaceous and other deposits by rubbing them with a buffered, aqueous solution of a crystalline sodium silicate, and rinsing. Heavy encrustations or deposits remaining after the above treatment may be removed from the lenses by heating...     

A process for descaling a metallic body, wherein a heated body is immersed in a bath of a molten oxidizing salt, and subsequently in an electrolyte of an aqueous solution of at least one neutral salt from the group consisting of the chloride, sulfate and nitrate of an alkali metal or ammonium.

A coating remover comprised of a substantially uniform mixture of about 5 to 35 percent by weight of N-methyl-2-pyrrolidone and the balance comprised of a water-base carrier containing about 10 to 35 percent by weight organic surfactants therein so that when such liquid mixture is admixed with a gas,...     

The interior of the tank of a tank truck or a tank wagon, is cleaned using a selectively removable sprayhead and the built-in delivery pump of the tank vehicle. A removable sprayhead is inserted into the interior of the tank through a manhole and connected, via the delivery pump, to an external storage...     

Silicone and/or hydrophilic soft contact lenses are freed of proteinaceous and other deposits by rubbing them with an aqueous solution of a crystalline sodium silicate having a pH of 10.2 - 10.9 and rinsing. The solution may contain in addition sodium chloride in isotonic amount, viscosity agents, wetting...     

A laundry method is disclosed including the step of laundering oil soiled fabric in lipophilic surfactant composition and subsequently laundering such fabric with a hydrophilic surfactant based detergent system.

Delivery of a chemical sanitizing agent to the rinse system of a warewasher is confirmed by first sensing the absence and subsequently the presence of the sanitizing agent near the outlet of the delivery conduit. Failure to meet these two conditions in this order and within a preset time triggers an...     

Container-stable alkaline cleaning compositions and processes are provided which are effective for cleaning carpets, upholstery and the like, and for imparting water and oil repellency and stain resistance thereto. One such composition comprises in an aqueous medium: detergent, water-dispersible carboxyl-containing...     

Semi-conductor discs are cleaned, after being subjected to a polishing operation, by immersing the discs in a solution of about 30-100% by weight non-ionic or anionic surfactant and thereafter rinsing the discs with water.

Removal of soil or stains from carpeting by a dry cleaning process, in which a pad including yarn selected in accordance with the carpet material and an intermediate reduced area of metal foil is rotated in contact with a carpet area moistened with a first cleaning solution including volatile hydrocarbons...     

A clear-rinse agent concentrate for mechanical dishwashers containing, as sheeting component, from 10% to 80% by weight of a reaction product obtained by reacting under acid catalysis conditions (1) an aldose selected from the group consisting of a reducing monosaccharide having 5 to 6 carbon atoms and...     

A mobile cleaning unit for providing a high pressure cleaning spray, comprising a van-type vehicle with separate sources of water and cleaning and treating solutions. Valves, one associated with each source, determine the composition of the cleaning spray by individually controlling both the introduction...     

A systematic and programmed wash cycle for cleaning automatic and semi-automatic biochemical analyzers and separators and other equipment. The wash cycle includes a series or sequence of specific and ordered washing steps using a fixed specific sequence of reagents in critical concentrations including...     

A sterilization system preferably utilizing two baths in which articles to be sterilized are immersed into a first bath where the articles are conditioned and then into a second bath containing a sterilizing solution where they are sterilized. The ingredients for the sterilization system are stored in...     

A sterilization system preferably utilizing two baths in which articles to be sterilized are immersed into a first bath where the articles are conditioned and then into a second bath containing a sterilizing solution where they are sterilized. The ingredients for the sterilization system are stored in...     

Proteinaceous matter lodged on the surface of a contact lens is removed in a short period of time by immersion of the lens in an aqueous hypertonic composition containing urea or a salt of guanidine and a reducing agent such as a sulfite, a pyrosulfite, etc. The cleaning effect of the composition increases...     

A mobile cleaning unit for providing a high pressure cleaning spray, comprising a van-type vehicle with separate sources of water and cleaning and treating solutions. Valves, one associated with each source, determine the composition of the cleaning spray by individually controlling both the introduction...     

Mixing devices such as worm machines used for embedding radioactive wastes in hot bitumen are cleaned to remove residual bitumen and salt incrustations in three successive operations: (a) Washing with a solvent for bitumen in a volume amount equal to about the free space of the device. (b) Rinsing with...     

A method for removing unwanted films from surfaces is described in which the unwanted film is first dissolved in a suitable composition, the properties of the composition then changes so that the dissolved, unwanted film no longer remains soluble in the composition and comes out of solution in a form...     

Contaminants that accumulate on test probes utilized to contact aluminum pads on integrated circuit chips cause the probe resistance to become unacceptably high. As disclosed herein, the contaminants (predominantly a mixture of aluminum and aluminum oxide) are substantially removed by immersing the probes...     

In a multi-stage washing system comprising a plurality of washing tanks, fresh liquid is applied over a treated material at a front position in the zone of a furthermost tank, whereas in the tanks excluding a nearest tank, washing liquid is pumped from the individual washing tanks in an amount of more...     

The system comprises a plurality of on-line cleaning tanks, through which continuous metal strip is passed, and a plurality of storage tanks, each containing a different cleaning solution. Different combinations of cleaning solutions are transferred to the on-line tanks from the storage tanks by selecting...     

A method for the preparation of a mold for use in molding high density information discs includes treating the exposed surfaces of the mold with a solvent to remove any foreign matter therefrom. This step is followed by treating the exposed surfaces of the mold with a cleaning and drying agent to remove...     

The surface of a diamond bonded to a shank is cleaned by subjecting the shanked diamond to an ultrasonically agitated aqueous bath, contacting the shanked diamond with a concentrated aqueous alkaline solution, contacting the shanked diamond with an aqueous hydrogen peroxide solution, contacting the shanked...     

A fluid handling system for circulating a selected fluid medium from a selected tank through one of a plurality of wash tanks for a predetermined period of time, draining the selected wash tank and thereby returning the fluid to the selected tank, and then filling the selected wash tank from a different...     

A liquid rinse aid for use in automatic dishwashing machines comprises a low foaming ethoxylated nonionic surfactant, an organic chelating agent, a hydrotrope-water solubilizing system and 0.1-10%, by weight of the rinse aid, of magnesium, zinc, tin, bismuth or titanium ions, added in the form of a water...     

A fully automated method and apparatus for cleaning and disinfecting blood dialyzers for reuse having multiple stations simultaneously capable of cleaning a plurality of dialyzers. The dialyzer, the station cleaning the dialyzer, and the patient are identified and the identifications are stored in memory....     

A fully automated method and apparatus for cleaning and disinfecting blood dialyzers for reuse. An identification is assigned to the particular dialyzer being cleaned and is stored in machine memory. The number of times the dialyzer identification has been stored is automatically counted and the result...     

A novel treatment method for recovering halogenated vacuum pump oils such as chlorotrifluoroethylene, from contaminated filter papers. The process utilizes a trichlorotrifluoroethane (TCTFE) solvent and water mixture to extract the oil followed by vacuum distilling the resulting extractive.

Can containing food are rinsed with an aqueous solution of quaternary ammonium salt and oxyalkylene polymer (homopolymer of oxyethylene or copolymer of oxyethylene and oxypropylene).

A process and an apparatus for rinsing a chemically treated or plated article by sequentially moving the article initially over a chemical solution bath and subsequently over a plurality of rinse baths, in which the article is sprayed as it rises from each successive bath with a less concentrated rinse...     

There is provided an improved wax removing composition especially useful for removing wax from the top surface of surfboards, and a method of removing was utilizing the composition. The composition consists essentially of a major amount of a terpene hydrocarbon, and minor amounts of one or more fatty...     

Viscous solutions of NMP are described which comprise up to about 90% NMP. The viscosifying agent is rhamsan gum.

A method for cleaning keyboards having Hall-effect, plunger-type keys that comprises the steps of immersing the keyboard in a mild detergent bath, subjecting this bath to ultrasonic vibrations, removing the keyboard from this bath, rinsing the detergent solution from the keyboard, and drying the keyboard...     

The specification discloses an apparatus and method for cleaning printing screens or the like work surfaces in which solvent is pumped from a reservoir to the surface to be cleaned at a point closely adjacent a vacuum cleaning tool. The vacuum cleaning tool is connected by a vacuum line to the reservoir...     

A method of decontaminating soil consisting of removing organic hazardous waste from contaminated soil with an aqueous ammonia solution. The resulting aqueous ammonia solution containing organic hazardous waste is further processed to isolate the organic hazardous waste in a small volume for disposal....     

An improved bath for use in pickling of steel strip manufactured in a hot strip mill. Pickling fluid, usually acid, is supplied to the bath through apertures in the sidewalls of the bath. A plurality of apertures are provided spaced at differing heights from the bottom of the bath so that acid may be...     

Silver particles, which have been treated with an ionic surfactant and thus contain adsorbed ions derived from the surfactant, are de-ionized by exchanging the adsorbed ions with a non-ionic surfactant.

An article washing method includes the steps of bringing an article into a washing chamber; spraying a first washing liquid fed from a washing liquid tank to the article; separating off an initial most contaminated portion of the washing liquid used; repeating the spray with use of a cleaner washing...     

A method for removing asbestos-containing materials from substrates including a nozzle assembly for directing streams of pressurized steam to penetrate asbestos-containing material sufficiently to loosen binders therein so that the material can be easily dislodged from the substrate by a second stream...     

A method for removing nitride coatings from metal tooling and mold surfaces without damaging the underlying base metal includes placing the nitride coated metal surface into a plasma reactor and subjecting it to a gaseous plasma comprising a reactive fluorine species. The reactive fluorine species may...     

A method for stripping cured paint from a surface using a stripper composition containing a caustic alkali and a film forming liquid coating which is sprayed on the stripper composition to form a film on the surface of the stripper composition, the liquid coating containing a volatile thinner and a parafin...     

A method of decontaminating solid material consisting of removing organic hazardous waste from contaminated solid material with an aqueous ammonia solution. The resulting aqueous ammonia solution containing organic hazardous waste is further processed to isolate the organic hazardous waste in a small...     

A detergent compact for dishwashing machines based on alkali metal metasilicates, pentalkali metal tripolyphosphates, active chlorine compound, and surfactant. The compact comprises a cold water-soluble tablet (1) or melt (2) of the metasilicates, tripolyphosphates and surfactant, and a warm water-soluble...     

Method and apparatus for periodically cleaning washing apparatus in which washing liquid is intermittently circulated through a washing chamber adapted to contain the hand of a user. Cleaning is accomplished by intermittently circulating a cleaning liquid through the chamber while displaying a warning...     

This invention is an automated system and method for washing automobiles. The invention provides a device which sprays liquid onto the vehicle, while closely following the general contour of the vehicle. The system determines that contour by analyzing and recording patterns of broken light beams when...     

A process for cleaning organic material from the orifices of spinnerettes is disclosed. The spinnerettes are immersed in a fuse oxidizing salt bath between 500.degree. F. and 900.degree. F. The spinnerettes are placed with the orifices at an angle of 30.degree. to 75.degree. with respect to horizontal...     

The invention involves a method and compositions for cleaning all oily, natural or synthetic stains or residue from any stone surface, natural or man-made. The method comprises surrounding the stain with a container which is open at the bottom, pouring in a solvent material, covering the container with...     

Method and apparatus to clean the reeds of a weaving machine without removing the reeds from the machine and without disconnecting the warp yarns. A cleaning head is slid down the reed and blows a foaming agent through the space between the dents of the reed and sucks the lint, dust, etc. dislodged by...     

An apparatus to clean the reeds of a weaving machine without removing the reeds from the machine and without disconnecting the warp yarns. A cleaning head is slid down the reed and blows a foaming agent from one of the cavities through the space between the dents into the other of the cavities of the...     

A method fpr removing coatings from surfaces without damaging the underlying surface includes placing a surface having material to be removed thereon into a plasma reactor and exposing it to a gaseous plasma comprising a reactive halogen species. The reactive halogen species may be derived from one or...     

A towel dispenser contains two rolls of paper. A bar on the front, when pushed, delivers a short length of wet towel and a short length of dry towel, simultaneously. It also guides the towel dispensed from one of the rolls through a bath of antiseptic hand-cleansing solution. It also releases the system...     

A particular scrubbing agent/detergent formulation useful in removing contaminated oils and oily components from mill scale generated in a steel mill as disclosed. The formulation is based around medium aliphatic and heavy aromatic naphthas, linear and/or branched alkyl phenols, alkoxylated alkyl phenols,...     

A method for washing batteries includes washing batteries in water flowing at a low flat rate at a rinse station, collecting the water from the station, introducing fresh water, and repeating this at sequential stations, and causing water to flow between the stations at a given rate by creating a flow...     

This invention relates to a process of cleaning a surface soiled with a staining agent. The method includes the steps of applying to the soiled surface a highly cross-linked macroporous hydrophobic copolymer which contains a chemical entrapped therein which is a solvent for the staining agent present...     

A venetian blind or similar flexible flat article is held in tension on a foraminous belt and passed through washing, rinsing and drying zones. The condensate from the air from the drying zone is used as final rinse. The slats of the blind are held at a slight angle to improve drainage and prevent sag...     

An apparatus and process are provided to allow floor mopping without a mop bucket. The apparatus comprises a handle pivotally attached to a member with a generally flat lower surface. The lower surface of the member has thereon frictional means which can maintain a pre-moistened fabric sheet between...     

Apparatus and method for cleaning heat exchangers when overhauling transmissions or the like wherein the inlet and outlet of a heat exchanger is disconnected from the transmission and connected to a source of solvent, oil and air. Solvent is first injected into the heat exchanger in a direction reverse...     

A system for cleaning solids contaminated with solvent-soluble contaminants. The system, which includes both process and apparatus, comprises the use of at least two successive cleaning zones, each of which includes a slurrying stage and a centrifuge separation stage, wherein the solids to be cleaned...     

Disclosed is a method for cleaning solder flux connectors. A first solution comprising a monobasic ester is applied to the connectors. A second solution, which can include a solvent for a lubricant, is then applied to displace the first solvent.

A method for cleaning cellular contamination in a flow cytometer comprising the sequential use of a strong oxidizing solution, particle-free neutral pH fluid and a weak acid.

A method of cleaning window furnishings while located in their place of use, in which the furnishings are pushed together to form a vertically hanging block and a wetting medium is circulated from above. A cleaning washing medium is thereafter circulated from above, followed by a rinsing liquid also...     

In a method of recovering silver from an aqueous suspension, the suspension is admixed with a solution capable of converting silver halide to metallic silver to cause flocculation of the silver, the flocculated silver is separated from the aqueous phase, and the silver is recovered.

A surface of a silicon wafer is treated with hydrogen fluoride. Subsequently, the surface is cleaned with choline, choline-derivative and/or tetraalkyl ammonium hydroxide. Impurities are removed from the surface by cations from the cleaning agent. Further, hydroxyl groups from the cleaning agent cause...     

The invention teaches a deep boiling process for refining diamonds, be they raw or cut and polished. The process provides for initially precleaning the diamonds with solvents including alcohol, acetone, sulfuric acid, hydrogen peroxide, and/or water, to remove surface oils, hydrocarbons and other common...     

The present invention relates to a method of cleaning the outer circumferential surface of a drum by spraying a cleaning fluid thereon and a device for cleaning drums. The cleaning fluid is circulated and is cleaned with a filter during circulation. The drum is cleaned with a cleaning fluid passed through...     

Drill cuttings are cleaned of oil-based drilling mud and oil using a cleaning agent, such as a C6-C10 carboxylic acid, that is preferentially oil soluble at one pH and preferentially water soluble at another pH. The oily cuttings are treated with the carboxylic acid and then washed with an aqueous, alkaline...     

A battery cleaning system and process are provided, that make it possible to clean high capacity (12 to 72) volt acid storage batteries using appropriate cleaning solutions and liquids while recovering, cleaning and recycling the washing waste liquids, and minimizing the volume of liquid that has to...     

This invention relates to methods and apparatus for cleansing oil-contaminated particulate materials. The invention is particularly applicable to the treatment of oil well drill sites and to methods and means for continuously cleansing drill cuttings found in used drilling muds. An initial step involves...     

A process for the treatment of a material which is or is suspected to contain or carry one or more actinides or compounds thereof to dissolve such actinides or compounds comprises contacting the material with an aqueous solution having a pH in the range 5.5 to 10.5 which is free of heavy metal ions and...     

The method involves removing wax from a substrate using a non-chlorinated solvent process. The substrate is dipped in a hot wax bath or heated in an oven to remove substantially all of the wax. The substrate is then submerged in either a single or a series of hot mineral oil baths to remove any remaining...     

Drill cuttings are cleaned of oil-based drilling mud and oil using a cleansing agent, such as a C6-C10 carboxylic acid, that is preferentially oil soluble at one pH and preferentially water soluble at another pH. The oily cuttings are treated with the carboxylic acid and then washed with an aqueous,...     

Drill cuttings are cleaned of oil-based drilling mud and oil using a cleansing agent, such as a C6-C10 carboxylic acid, that is preferentially oil soluble at one pH and preferentially water soluble at another pH. The oily cuttings are treated with the carboxylic acid and then washed with an aqueous,...     

An engine cleaning apparatus and process for removing contamination from internal oil passages, internal water passages, internal air/fuel passages, and internal exhaust system passages of an internal combustion engine comprising a pump working in communication with a fluid supply line and a fluid return...     

A method for finishing metal surfaces, especially that of metal containers, using a cleaning agent having a substantially neutral pH is provided. In one embodiment of the invention lubricants and coolants used during container forming processes are cleaned from the surface of metal containers by using...     

A conveyor dishwashing machine in which racks of dishes are conveyed from a loading surface through a hood which presents washing and rinsing zones and onto a discharge surface. In the washing zone, wash spray is applied to the dishes from a spray system which is easily removed for cleaning and easily...     

The present invention is a washing apparatus suited for use in washing outside surfaces of vehicles. Fluid is conducted along a conduit that is mounted to a support structure so as to permit selected displacements thereof along a longitudinal axis of the conduit and selected rotations thereof about the...     

A method and an apparatus for treating workpieces with a fluid, in particular for cleaning metallic workpieces prior to a subsequent heat treatment are disclosed. According to claimed method the workpieces are positioned in a washing vessel and are entirely overflowed with a pressureless swell of a treating...     

A process for the decontamination of surfaces and solid objects contaminated with hazardous chemical substances comprising treating the surfaces and solid objects with a solution of alkali metal huminates of low molecular weight and compositions used therein.

A method for disinfecting a lens is disclosed. The method comprises contacting a lens to be disinfected in a liquid medium with at least one chlorine dioxide precursor in the presence of at least one acidic component effective to increase the rate of formation of chlorine dioxide from the chlorine dioxide...     

A combination of a first surface treating solution comprising an inorganic or organic alkali such as ammonia or a quaternary ammonium hydroxide, hydrogen peroxide, water and a second surface treating solution of ultra-pure water, at least one of the first and second surface treating solutions containing...     

A degreasing method and system which subjects dirty and oily parts to a bath of relatively impure solvent and thereafter rinsing such parts in relatively pure solvent. The rinsing is performed above the bath so that the relatively pure solvent used as a rinse falls into the bath and recharges it. The...     

The invention relates to methods and compositions for cleaning a wide range of soil types from dirty articles, such as metal, ceramic or glass substrates. A first class of solvent compositions used for cleaning is an oxidative stable mixture of non-polar aromatic hydrocarbons and an organic polar component...     

A new method of removing particles from the surface of a wafer is described. The key to the method is a room temperature ammonium hydroxide-hydrogen peroxide solution. The wafer is immersed in hydrofluoric acid, then, while the wafer is still wet, it is either immersed in an ammonium hydroxide-hydrogen...     

Disclosed is a washing method in which parts and products are washed free of residual smudges without using fleon-family solvents. The method of washing members such as parts or products comprises a first degreasing step for degreasing in nonaqueous liquid the members to be washed after worked, a second...     

The invention relates to rinse aid compositions useful in warewashing, that provide sanitizing properties and stain control. The rinse aids of the invention provide a highly active available chlorine source which is incorporated into solid systems containing sheeting agents. The chlorine source is sufficiently...     

A washing and drying method and apparatus which uses a washing liquid such as pure water or a solvent of the hydrocarbon type but is very high in washing effect and drying effect and allows quick drying and hence a decrease of the drying time and besides can dry a workpiece of a complicated profile uniformly....     

A substrate cleaning method and equipment for removing foreign metters adhered to a substrate, the method comprising the steps of: making hydrophilic a surface of the substrate; causing pure water to diffusively permeate the hydrophilic surface of the substrate, thereby forming a layer of aqueous particles...     

A method of cleaning metal filters of a solvent spun fibre production plant. The method comprises the step of (a) dissolving dope from the filters using a hot solvent for the dope, (b) washing the solvent from the filters using hot water, (c) pyrolysing remnants of dope or solvent in the filters, (d)...     

A fluid treatment apparatus and method for applying first and second fluids (e.g., etchant and water) to an article (e.g., circuit board) passing through the apparatus at a predetermined rate. The first fluid is impinged on a surface of the article and thereafter collected within the apparatus' common...     

Disclosed herein are a method of cleaning an oil-deposited material, which comprises cleaning a material having oils deposited on the surface thereof with a cleaning agent comprising 25 to 90% by weight of at least one of compounds selected from the group consisting of pyrrolidones, .gamma.-butyrolactone...     

A machine for removing oil, dirt and grinding debris from a metal surface comprises a plurality of wash, rinse and dry stations separated to prevent contamination carryover from one station to the next. Razor blades in stacks are passed through the stations, the stacked blades being mounted on rods supported...     

After a milking, the milking apparatus is cleaned in stages. First, the remaining milk is rinsed out with water. Second, the apparatus is washed through with detergent. The first stage rinse is very thorough, so that the second stage wash leaves the detergent solution still quite clean. The solution...     

An improved method for cleaning heat exchangers, wherein a first liquid containing a cleaning agent is used to remove substantially all of the accumulated sludge and deposits from the surfaces of the heat exchanger, and a second liquid containing a cleaning agent is used to remove deposits from the crevice...