Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K35/00—Means to prevent accidental or unauthorised actuation
  • F16K35/04—Means to prevent accidental or unauthorised actuation yieldingly resisting the actuation
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/02—Anionic compounds
  • C11D1/04—Carboxylic acids or salts thereof
  • C11D1/10—Amino carboxylic acids; Imino carboxylic acids; Fatty acid condensates thereof
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/02—Anionic compounds
  • C11D1/32—Protein hydrolysates; Fatty acid condensates thereof
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
  • C11D17/0043—For use with aerosol devices
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/0005—Other compounding ingredients characterised by their effect
  • C11D3/0057—Oven-cleaning compositions
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
  • C11D7/02—Inorganic compounds
  • C11D7/04—Water-soluble compounds
  • C11D7/06—Hydroxides
• • C—CHEMISTRY; METALLURGY
  • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
  • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
  • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
  • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions

Definitions

• the particular anionic surfactants present in the concentrate have the important function of inhibiting the corrosive action of the concentrate on the human skin and mucuous tissues and consist specifically of the sodium salts of the condensation product of coconut fatty acids with a complex of polypeptides and amino acids derived from proteins (Maypon SK), of a complex of polypeptides and amino acids derived as a hydrolysate from proteins (Polypeptide No. 37) and of an amido methylated lauric acid (Sodium N-Lauroyl Sarcosinate Sarkosyl NL-97).
• the concentrate may include a thickening agent to render it surface adhering and additionally may be packaged in an aerosol container for expulsion therefrom by a propellant with or without a foam-forming and foam-stabilizing agent.
• the present invention relates to a new and improved composition for and method of quickly and? expeditiously removing and cleaning from a surface, such as the interior surface'of acooking oven, all adherent residue of burnt-on fat or other deposits of greasyor oily character;
• the provisioniofa cleanser composition' whichmay be contained in and dispensed from a pressure-tight. container having; a conventional aerosol dispensing valve, said'concentrate being characterized by the fact that it is in the form of a concentrate which includes, inter alia, an aqueous solutionof caustic alkali-which is noncorrosive and so produces no harmful effects on theskin should any of the concentrate contact the skin during use of the cleansing composition.
• Theconcentrate is dispensed from the aerosol package by a propellant contained therein, which propellant is completely inert with respect to and substantially insoluble in the concentrate.
• the propellant forms with the concentrate, upon shaking of the package, an emulsion from which the propellant is gradually released tothereby effect upon actuation of the aerosol dispensing valve, discharge of the concentrate from the aerosol package to the surface to-be cleaned.
• thepropellant basically remains not dissolved in the. concentrate, where it is of a specific gravity higher than that of the-concentrate, it is. normally disposedf as a liquid inthe bottom of the. aerosol. containerin underlying relation to the concentrate.
• the aerosol package is vigorously shaken to form the above-mentioned concentrate-propellant emulsion andthe aerosol discharge valve is then opened, a proportion of'the propellant in the form of a vapor is releasedfrom the emulsion into the head space of the container'and maintains therein a gaseouspressure sufficient to expel the emulsion from the container, so that the concentrate, upon its discharge from the container and. impingement upon the surface being cleaned is converted intoafoatn by the expanding action of the gas entrained therein.
• the-cleanser concentrate contains as its essential constituents l caustic alkali (whichmay be either sodium: hydroxide or potassiumhydroxide-)';.(2) a nitrogen-containingsurfactant of the anionic class, with or without a fatty acidsoap as afoam stabilizing'agent; (3)- a high boiling, essentially non-evaporative polyhydric alcohol; and (4) water in which the foreging constituents aredissolved to form an aqueous solution thereof.
• l caustic alkali whichmay be either sodium: hydroxide or potassiumhydroxide-
• a nitrogen-containingsurfactant of the anionic class with or without a fatty acidsoap as afoam stabilizing'agent
• (3)- a high boiling, essentially non-evaporative polyhydric alcohol and (4) water in which the foreging constituents aredissolved to form an aqueous solution thereof.
• the propellant employed in conjunction with such aqueous solution of concentrate packaged in an aerosol" container is of a kind which not only is neither substantially hydrolyzable or degradable in the presence of the concentrate but also is substantially insoluble therein so that it combines with the-concentrate only in the form. ofan emulsion.
• the caustic alkali employed is. readily soluble in water, the proportion of alkali used based on the total: weight of the concentrate ranging from 0.5 to 5 percent as against a water content of from 30 to percent by weight of the concentrate.
• This exceedingly small ratio of caustic alkali to water in the concentrate provides important advantages for the concentrate of the present invention, among which advantages may be listed the fact that water is the least expensive solvent and so materially reduces the cost of the concentrate, and the fact that the relatively high proportion of water present in the concentrate makes it unnecessary to water down the soiled surface being cleaned as a preliminary to application of the cleanser composition and effective activation thereof.
• Another most important object of the present invention is to provide a concentrate in the form of an aqueous solution of caustic alkali combined with alcohols and anionic surfactants which not only very markedly inhibits corrosive action of the caustic on the skin but also is not corrosive to ferrous metals of which aerosol containers are made.
• concentrate as used herein is meant the aqueous solution of caustic alkali, polyhydric alcohols and anionic surfactants hereinafter specifi'cally described with or without additives and excluding therefrom the propellant.
• anionic surfactants employed in the concentrate of the present invention may be any one or a mixture of the following:
• T 3' Also included in the concentrate is a humectant in R,CN(CCNC) -C-0-M the form of relatively non-evaporative, high boiling I polyhydric alcohols, such as glycerol, ethylene glycol,
• H H l0 propylene glycol and dipropylene glycol.
• These glycols not only prevent too rapid drying out of the concenwherein trate but also act as humectants for maintaining the n is an integer averaging 4 which is controlled by the caustic alkali in an active state when the aqueous condegree of hydrolysis, centrate is applied to a surface to be cleaned which has R represents hydrogen or hydrocarbon groups having been preheated to a temperature of 200 F.
• Nitrogen determinations concentrate preferably may include a foam-forming showing 2.3 to 2.7 percent Nitrogen. and stabilizing agent in the form of an anionic fatty acid 2.
• Polypeptide No. 37 manufactured by Maysoap, which is obtained through introduction into the wood Division of the Stepan Chemical Company, conconcentrate of oleic acid and an alkanolamine, such as sisting of the sodium salt of a complex of polypeptides monoethanolamine, diethanolomine or triand amino acids derived as a hydrolysate from protein ethanolamine.
• This fatty acid soap constituent of the degradation, having the structure: 3 concentrate serves not only as an additional emulsify- TOHHO l?
• the alkanolamine further combines and acts synergistically with the caustic alkali to more effectively activate the cleansing property of the composition.
• a propellant which may be any one n is an integer averaging 20 which is controlled by the degree of hydrolysis,
• R represents hydrogen or hydrocarbon groups having from 1 to 7 carbon atoms
• M represents sodium, potassium, ammonium, triethanolamine and other organic amines.
• This compound, Polypeptide No. 37 contains from 41 to 45 percent of the characterizing sodium salt as its active ingredient and from 37 to 43 percent protein, as computed f Kjeldahl Nitrogen determinations or a mixture of the following: dlCl'llOlO difluoro methshowing 5.92 to 6.88 percent nitrogen. fine C ienetron l2 manufactured by General Chemi- Sodium N Lauroyl Sarcosinate (e'gq cal Division; Freon l2 manufactured by Freon Divi- SYL NL97", manufactured by Geigy Industrial Sion of d6 w?
• R represents the fatty substituent from lauric acid as butane, isobutane, propane and mixtures thereof.
• M represents sodium, potassium,ammonium,triethapropellant for the fluorocarbon propellant content of nolamine and other organic amines.
• the composition to be sprayed from an aerosol conlt has been found that the protein type surfactants tainer, as by introducing into the composition a hydrocarbon propellant in an amount of from 3 to 4.5 percent by weight of the composition as against about 6 percent by weight of the aforesaid fluoro carbon propellant, the composition containing the hydrocarbon propellant is non-flammable.
• the non-flammable property of the composition containing the hydrocarbon propellant in accordance with the present invention is an important attribute thereof since it is desirable, for most effective cleansing of oven soils, to spray the composition into the oven pre-heated to a temperature of approximately 200 F.
• This elevated temperature of the surfaces to be cleaned not only potentiates the action of the caustic on the oven soils, but also effects such instant volatilization of the propellant vapors as to enable them to rapidly flash off and be carried away by the hot air convection currents.
• All of the above-mentioned propellants are substantially insoluble in the aqueous concentrate, but instead combine there-with to form a liquid emulsion which, upon its discharge from the dispensing container, and impingement against the surface to be cleaned, effectively forms a stabilized blanket of foam over said surface to soften, dissolve and emulsify the burnt on fats and other deposits so that the same may be readily removed by a simple wiping treatment.
• the concentrate of the present invention when, however, it is desired to use the concentrate of the present invention as a liquid preparation as distinguished from a foam-forming composition, it may be desirable to incorporate in the concentrate, in lieu of the fatty acid soap stabilizer, a thickening agent such as sodium carboxy methyl cellulose (CMC), amylo pectine starch or other compatible additive which is soluble or at least readily dispersable in the concentrate to render it more or less viscous as may be desired so that it may properly blanket and adhere to the surface to be cleaned.
• a thickening agent such as sodium carboxy methyl cellulose (CMC), amylo pectine starch or other compatible additive which is soluble or at least readily dispersable in the concentrate to render it more or less viscous as may be desired so that it may properly blanket and adhere to the surface to be cleaned.
• the additives incorporated in the concentrate may vary as desired in any amount up to 5 percent in each instance.
• the propellant its percentage (also by weight I of the total foam-forming composition packaged in the dispensing container) may vary in amount as may be necessary to provide in the aerosol container the requisite vapor pressure for effecting complete discharge therefrom of the cleanser contained therein and effective foaming thereof. which pressure should be within safe limits for the container in which the cleanser is packaged.
• compositions which have exceptionally high cleaning power when used to remove food residue and burnt-on fat and grease deposits from the 5 surfaces of ovens and the like are illustrative of the present invention and provide compositions which have exceptionally high cleaning power when used to remove food residue and burnt-on fat and grease deposits from the 5 surfaces of ovens and the like. Further, and of equal importance, is the fact that in all of these illustrative compositions, the corrosive effect of the caustic alkali content thereof is inhibited to minimize burns or other irreversible injury to the user upon contact of the composi- 10 tion with the skin.
• the apon sol s polypeptide 37 (50% preferred procedure 15 to apply it directly upon the sur- SOIidS) face to be cleaned, preferably after it has been pre- Sodium N-Lauroyl sarcosinaw (anhydrous) 2'0 3) heated as aforesald, as by spraying the same, when pre Olcic acid 0.2 0.2 5 pared as a foam-forming composltlon pursuant to Ex- T'lflham'amim amples 6 to 17 as above set forth, from a pressurized Monoethanolaminc 2.0
• the water content thereof is limited to substantially less we as Specifically, as indicated by the claims than 50 percent of the total weight of the composition, pended hereto the humectant content is increased proportionately as I l i set forth and also there is included in the composition, 1, A li id iti f cleaning oven, grill and with or Without the Presence therein 0f the Olelc acid similar surfaces which inhibits the corrosive action soap as a foam Stabilizing age a pr p i thereof on human skin and mucous tissues consisting amount of water thickening agents to further stabilize essentially of an aqueous solution of about -5 to 5 the foam.
• thickening agents in addition to those parts by weight of sodium hydroxide, about 20 parts by previously mentioned and which serve to stabilize the weight of propylene glycol; about 2 parts by weight of foam and to increase its ability to adhere to vertical sura compound having the following general formula: faces, may be of the organic type or the inorganic type as follows: 7 W
• INORGANIC cement and beneficialated clays
• m is an integer averaging 4 and Refi alciu bfintonite y manucontrolled by the degree of hydrolysis; about 1 part by factured by HM.
• R represents the fatty substituent of lauric acid that the composition of the present invention effecmade from coconut oil
• M represents sodium;about 0.3 tlvely cleans ovens of burnt-0n fatty food residue and parts by weight of oleic acid; about 0.6 parts by weight the like within a matter of only several minutes, ordiof tri-ethanolamine; and, from about 30 to about narily if properly applied in about three minutes. parts by weight of water.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Organic Chemistry (AREA)
• Wood Science & Technology (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Life Sciences & Earth Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Inorganic Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Detergent Compositions (AREA)
• Cosmetics (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=26863189

Family Applications (1)

Country Status (7)

Cited By (34)

Families Citing this family (1)

Citations (6)

• 0
  • ZA ZA662524D patent/ZA662524B/xx unknown
• 1966
  • 1966-05-03 GB GB19541/66A patent/GB1125849A/en not_active Expired
  • 1966-07-01 NL NL6609198A patent/NL6609198A/xx unknown
  • 1966-07-20 DE DE19661617099 patent/DE1617099A1/de active Pending
  • 1966-07-28 CH CH1096166A patent/CH471886A/de not_active IP Right Cessation
  • 1966-11-04 BE BE689280D patent/BE689280A/xx unknown
• 1971
  • 1971-07-29 US US00167450A patent/US3779933A/en not_active Expired - Lifetime

Patent Citations (6)

Non-Patent Citations (8)

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