EP0188545B1 - Composition de trisodium phosphate, d'hydroxyde de sodium et d'hypochlorite de sodium et procede pour enlever des taches - Google Patents

Composition de trisodium phosphate, d'hydroxyde de sodium et d'hypochlorite de sodium et procede pour enlever des taches Download PDF

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Publication number
EP0188545B1
EP0188545B1 EP19850903594 EP85903594A EP0188545B1 EP 0188545 B1 EP0188545 B1 EP 0188545B1 EP 19850903594 EP19850903594 EP 19850903594 EP 85903594 A EP85903594 A EP 85903594A EP 0188545 B1 EP0188545 B1 EP 0188545B1
Authority
EP
European Patent Office
Prior art keywords
fabric
composition
trisodium phosphate
stains
solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19850903594
Other languages
German (de)
English (en)
Other versions
EP0188545A4 (fr
EP0188545A1 (fr
Inventor
Donald P. Molony
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT85903594T priority Critical patent/ATE47604T1/de
Publication of EP0188545A1 publication Critical patent/EP0188545A1/fr
Publication of EP0188545A4 publication Critical patent/EP0188545A4/fr
Application granted granted Critical
Publication of EP0188545B1 publication Critical patent/EP0188545B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • C11D3/395—Bleaching agents
    • C11D3/3958—Bleaching agents combined with phosphates
    • 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
    • C11D3/395—Bleaching agents
    • C11D3/3953—Inorganic bleaching agents
    • 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
    • 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
    • C11D7/10—Salts
    • C11D7/16—Phosphates including polyphosphates

Definitions

  • the present invention relates to a composition and process for removing stains from fabric.
  • Protein-containing stains in fabric present a difficult laundry problem.
  • Blood presents a particular problem in that it contains a number of difficult-to-remove components, including iron and a variety of complex proteins. If blood becomes set in a fabric, such as by laundering the fabric or neglecting to treat the stain immediately, the stain may resist known laundering treatments, and garments or other stained articles may have to be discarded.
  • enzyme-containing detergents are employed to remove blood stains.
  • U.S. Patent No. 3,553,139 to McCarty et al discloses a composition containing an enzyme, a peroxy compound and a mixture of builder salts and organic detergents. The composition is stated to be effective in removing blood and other stains from fabrics and textiles.
  • Enzymes particularly in combination with peroxy compounds, tend to be harsh both to the fabric and to the hands of the user, and may even elicit an allergic reaction.
  • enzymes which are themselves proteinaceous, may be inactivated in the presence of peroxy compounds or at extremes of pH.
  • enzymes are at a relatively high cost component of detergents, thus increasing the cost of manufacturing the detergent.
  • U.S. Patent No. 3,360,476 to Krusius discloses a liquid composition comprising 3 to 12 parts by weight of an alkali metal phosphate (e.g., trisodium phosphate) for use as a grease-cutting detergent. Krusius acknowledges that the composition is expected to be harsh on the hands, and therefore teaches the addition of an emollient.
  • U.S. Patent No. 1,870,804 to Gale et al discloses a composition comprising a double salt of trisodium phosphate and sodium metaborate which is used to remove grease and dirt on citrus fruit. It would not be expected that a compostiion which is effective in removing grease (hyrophobic) stains would be highly effective in removing proteinaceous (hydrophilic) stains as well.
  • the present invention provides a composition for removing stains from fabric characterised in that the said composition comprises an aqueous solution containing from 1.0 to 15.0 grams per liter of trisodium phosphate, from 0.5 to 10.0 grams per liter of sodium hydroxide and from 1.0 to 4.0 percent by weight of sodium hypochlorite based on active chlorine content.
  • composition of the invention is effective in substantially completely removing even set blood stains from even certain delicate fabrics without undesirable effects associated with enzymatic detergents.
  • a process for removing stains from fabric comprising (a) contacting stained fabric with an aqueous solution comprising a composition in accordance with the invention; (b) allowing the solution to remain in contact with the fabric for a period of time sufficient to substantially completely remove any stain; and (c) rinsing the fabric in water to dilute and substantially remove the trisodium phosphate-containing solution.
  • the invention relates to a process for removing stains from fabric comprising (a) contacting stained fabric with a solution comprising between about 1.0 and 15.0 grams per liter of trisodium phosphate, between about 0.5 and 10.5 grams per liter of sodium hydroxide, and between about 1.0 and about 4.0 percent by weight of sodium hypochlorite based on active chlorine content; (b) allowing the solution to remain in contact with the fabric for a period of less than about 2 minutes; and rinsing the fabric in water to dilute and substantially completely remove the trisodium phosphate-containing solution.
  • compositions of the invention are effective in removing from fabrics stains including set blood stains in a manner which is effective, convenient, and inexpensive. Moreover, the present compositions can remove virtually completely set blood stains or stains from other proteins from fabric in a manner which is neither harmful nor harsh on the fabric or the hands of the user. A further advantage of the preferred compositions of the invention is that the compositions are nonenzymatic and leave no chemical residue on fabric.
  • Trisodium phosphate (tertiary sodium orthophosphate, tribasic sodium phosphate) is easily produced by methods well known in the art.
  • soda ash Na 2 C0 3
  • phosphoric acid H 3 P0 4
  • the disodium phosphate is then mixed with caustic soda (NaOH) to form trisodium phosphate which is recoverable as colorless crystals which are usually hydrated (NasPO- 12H 2 0) but which are also available in anhydrous form.
  • NaOH caustic soda
  • trisodium phosphate which is recoverable as colorless crystals which are usually hydrated (NasPO- 12H 2 0) but which are also available in anhydrous form.
  • the hydrated and anhydrous forms are equally suitable for the process of the present invention.
  • the second component, sodium hydroxide is readily available commercially and any commercially available grade or variety is suitable for use in the present invention, including reagent grade, granulated (containing 60% to 76% Na 2 0); rayon (containing iron, copper, and manganese); and solution (50% or 73% sodium hydroxide).
  • Sodium hypochlorite is most commonly produced by electrolyzing a cold, dilute solution of salt water (e.g., sea water). Addition of sodium hydroxide, as in the present invention, confers additional stability to the solution.
  • sodium hypochlorite is supplied in an aqueous solution comprising about 2 to 10% by weight based on active chlorine sodium hypochlorite (i.e., between about 1.0 and 6.0 grams per liter available chlorine).
  • the hypochlorite solution contains about 5.25% sodium hypochlorite, by weight based on active chlorine content (about 3 grams per liter) the remainder of the composition comprising water and other inert ingredients.
  • active chlorine content is meant available chlorine concentration.
  • lavender oil is added as a perfuming agent.
  • a solution is prepared by combining between 1.0 and 15.0 grams (dry weight) trisodium phosphate, and between about 0.5 and 10.0 grams sodium hydroxide; dissolving in combination in 250 to 500 ml of water; and adding the resulting solution to 500 to 750 ml of a 5.25% solution of sodium hypochlorite to produce a total volume of one liter.
  • between about 8.0 and 12.0 grams of trisodium phosphate and between about 4.0 and 6.0 g sodium hydroxide are dissolved in approximately 250 to 400 ml of water and 600 to 750 ml of a 5.25% solution of sodium hypochlorite is added to produce a volume of one liter.
  • approximately 10.0 g of trisodium phosphate and approximately 5.0 grams of sodium hydroxide are dissolved in approximately 330 ml of water and approximately 670 ml of a 5.25% solution of sodium hypochlorite added to bring the volume to one liter.
  • the ingredients may be mixed simply by pouring the specified proportions of trisodium phosphate, sodium hydroxide and sodium hypochlorite into a suitable container, e.g., of glass, ceramic, etc, and adding water to bring the volume to the specified amount. Agitation may be employed to assist mixing.
  • the composition may be applied topically to the stained fabric in a number of ways. It is envisioned that any known method for applying a small quantity of a solution to a surface may be employed. In preferred embodiments, the solution may be applied as a spray in a non-aerosol pump, rolled or brush on, or dabbed onto the fabric through an absorbent fabric (e.g., felt) stopper or sponge.
  • an absorbent fabric e.g., felt
  • Stains which may be removed in accordance with the present invention include fresh or set blood or serum stains (including menstrual blood stains); fresh or set perspiration, mucous, pus or any other body exudates; wine, stains from flowers and stems of plants, mildew, rust, ball point pens, fabric dye, and fruit.
  • set is meant stains which become difficult to remove either by the passage of time (oxidation process) or by laundering (e.g., at temperatures over about 55°C).
  • set blood stains is meant stains which have become brownish in color.
  • the composition is to remain in contact with the stained fabric for a period of time less than about two minutes, and preferably between 10 and 45 seconds, and more preferably between 15 and 30 seconds. If the composition is left in contact with the fabric for longer than about five minutes, certain fabrics may be damaged (i.e., may show a decrease in tensile strength), and the stain may become set, and resist further treatment. If contact occurs for substantially less than 5 seconds, the treatment may be ineffective.
  • the fabric is rinsed, preferably in cold water, to remove the trisodium phosphate-containing solution.
  • the temperature of the water may be between 35°C and 55°C, and preferably between 40°C and 50°C.
  • This rinsing step is necessary to dilute and susb- tantially remove the trisodium phosphate-containing solution from the fabric and prevent harm to the fabric.
  • the fabric is laundered according to the manufacturer's specifications (by hand or machine washing) to restore softness to the fabric and for sanitation reasons.
  • any type of fabric may be treated in accordance with the present invention without damage to the fabric.
  • natural fabrics including cotton, and synthetic fabrics including nylon, rayon, Orlon (trademark of E.I. duPont de Nemours for an acrylic fiber), Dacron (trademark of E.I. duPont de Nemours for polyethylene terephthalate), and various polyesters and blends thereof may be treated without harmful consequences.
  • Silk and wool will begin to be burned and/or dissolve on exposure to the solution of the present invention after about five seconds of contact.
  • the solution may be used in direct contact with the hands, which is totally unexpected, in that sodium hydroxide alone in the concentrations employed therein is extremely burning to the hands.
  • composition and process of the present invention are suitable for use in removing stains in garments, linens, hospital gowns, and upholstery, as well as any item containing either natural or synthetic fibers, with the exception of silk and wool.
  • composition was sprayed onto a 50% cotton/50% polyester blend which had blood stains set by laundering and allowed to remain for approximately 30 seconds. After rinsing, the stain was visually undetectable.
  • Example 1 The procedure of Example 1 was substantially followed, except that the following fabrics stained with fresh blood were used, and were soaked for the following periods of time:
  • Example 1 7.5 g of sodium hydroxide was dissolved in 1000 ml of water and the procedure of Example 1 substantially followed on the following fabrics for each of the following periods of time; except that fresh blood was used:
  • a set blood stained fabric was contacted with each of the following aqueous solutions in a manner identical to the procedure of Example 1. In each case, the contact occurred for 30 minutes.
  • a set blood-stained fabric was contacted for 30 minutes with a solution prepared by dissolving 2.5 g of each of the following in 250 mls of water.
  • Snowy Bleach (trademark of Gold Seal Co. for a detergent containing sodium perborate and sodium carbonate)
  • Clorox 2 (trademark of The Clorox Company for a phosphate-free detergent containing sodium carbonate, sodium metaborate, and a protease)
  • Diaperpur (trademark of Boyle-Midway, Iric. for a detergent containing sodium carbonate)
  • Miraq (trademark of Minnetonka Corp. for a detergent containing tripolyphosphate, nonylphenol, and sodium carbonate)

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

Abstract

Composition et procédé pour enlever des taches d'un tissu. Cette composition comporte une solution de trisodium phosphate, d'hydroxyde de sodium et d'hypochlorite de sodium. Le procédé comporte les étapes suivantes: a) mettre le tissu taché en contact avec une composition comportant une solution aqueuse de trisodium phosphate, d'hydroxyde de sodium et d'hypochlorite de sodium; b) laisser la solution en contact avec le tissu pendant un laps de temps suffisant pour enlever pratiquement entièrement toutes les taches; c) rincer le tissu à l'eau afin de diluer et d'enlever substantiellement la solution contenant du trisodium phosphate. La composition et le procédé de la présente invention sont très efficaces pour enlever des taches de sang, de mucus et de transpiration, ainsi que d'autres taches protéiniques, sur une multitude de types de tissus, sans effets négatifs pour le tissu ou les mains de l'utilisateur.

Claims (9)

1. Composition destinée à enlever des taches d'une étoffe, caractérisée en ce qu'elle comprend une solution aqueuse contenant 1,0 à 15,0 grammes par litre de phosphate trisodique, 0,5 à 10,0 grammes par litre d'hydroxyde de sodium et 1,0 à 4,0 pour cent en poids d'hypochlorite de sodium sur la base de la teneur en chlore actif.
2. Composition suivant la revendication 1, dans laquelle la solution aqueuse contient 8,0 à 12,0 grammes par litre de phosphate trisodique, 4,0 à 6,0 grammes par litre d'hydroxyde de sodium et 3,0 à 4,0 pour cent en poids d'hypochlorite de sodium sur la base de la teneur en chlore actif.
3. Composition suivant la revendication 2, comprenant environ 10,0 grammes par litre de phosphate trosodique; environ 5,0 grammes par litre d'hydroxyde de sodium; et environ 3,5 pour cent en poids d'hypochlorite de sodium sur la base de la teneur en chlore actif.
4. Procédé pour enlever des taches d'une étoffe, qui consiste (a) à mettre l'étoffe tachée en contact avec une solution aqueuse d'une composition suivant l'une quelconque des revendications précédentes; (b) à maintenir la solution au contact de l'étoffe pendant une période suffisante pour enlever quasi totalement toute tache; et (c) à rincer l'étoffe dans de l'eau pour diluer et enlever quasi totalement la solution contenant du phosphate trisodique.
5. Procédé suivant la revendication 4, dans lequel l'étoffe de laquelle des taches sont enlevées est en coton, en lin, en fibres synthétiques ou en des mélanges de ces matières.
6. Procédé suivant la revendication 4 ou 5, dans lequel les taches qui peuvent être enlevées sont du sang, du sérum, du mucus et/ou de la transpiration.
7. Procédé suivant la revendication 4, 5 ou 6, qui comprend l'étape additionnelle de blanchissage de l'étoffe après rinçage.
8. Procédé suivant l'une quelconque des revendications 4 à 7, dans lequel la solution aqueuse reste au contact de l'étoffe pendant une durée de moins d'environ 2 minutes.
9. Procédé suivant la revendication 8, dans lequel la solution aqueuse reste au contact de l'étoffe pendant une durée de 10 à 45 secondes.
EP19850903594 1984-07-05 1985-07-03 Composition de trisodium phosphate, d'hydroxyde de sodium et d'hypochlorite de sodium et procede pour enlever des taches Expired EP0188545B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85903594T ATE47604T1 (de) 1984-07-05 1985-07-03 Trinatriumphosphat/natriumhydroxid/natriumhypoc lorit-zusammensetzung und verfahren zur beseitigung von flecken.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US62767584A 1984-07-05 1984-07-05
US627675 1984-07-05

Publications (3)

Publication Number Publication Date
EP0188545A1 EP0188545A1 (fr) 1986-07-30
EP0188545A4 EP0188545A4 (fr) 1986-11-10
EP0188545B1 true EP0188545B1 (fr) 1989-10-25

Family

ID=24515634

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850903594 Expired EP0188545B1 (fr) 1984-07-05 1985-07-03 Composition de trisodium phosphate, d'hydroxyde de sodium et d'hypochlorite de sodium et procede pour enlever des taches

Country Status (4)

Country Link
EP (1) EP0188545B1 (fr)
AU (1) AU4603285A (fr)
DE (1) DE3573930D1 (fr)
WO (1) WO1986000635A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5061392A (en) * 1990-02-07 1991-10-29 Dubois Chemicals, Inc. Method of making paste detergent and product produced
US5746936A (en) * 1996-09-13 1998-05-05 Colgate-Palmolive Co. Hypochlorite bleaching composition having enhanced fabric whitening and/or safety benefits
EP0867502B1 (fr) * 1997-03-27 2004-11-17 The Procter & Gamble Company Compositions de blanchiment

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA681635A (en) * 1964-03-10 Friedman Jack Washing and bleaching composition
US1555474A (en) * 1924-06-23 1925-09-29 Victor Chemical Works Chlorine-containing compound
US2324302A (en) * 1940-05-31 1943-07-13 Diversey Corp Stable-colored crystalline alkali metal hypochlorite-containing composition
US2921911A (en) * 1958-01-10 1960-01-19 Pennsalt Chemicals Corp Oxidizing compositions
BE593480A (fr) * 1959-07-28
FR1521615A (fr) * 1967-03-10 1968-04-19 Prod D Entretien Francais Prod Composition détersive stable
DE1792358A1 (de) * 1968-08-23 1972-10-26 Henkel & Cie Gmbh Verfahren zum maschinellen Spuelen von Geschirr
FR2076515A5 (en) * 1970-01-16 1971-10-15 Gouillon Daniel General purpose cleaning compsn - contg soda, phosphate, surfactant a hypochlorite
JPS4932643A (fr) * 1972-07-21 1974-03-25

Also Published As

Publication number Publication date
AU4603285A (en) 1986-02-10
WO1986000635A1 (fr) 1986-01-30
EP0188545A4 (fr) 1986-11-10
EP0188545A1 (fr) 1986-07-30
DE3573930D1 (en) 1989-11-30

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