WO2009149120A1 - Gels smectiques rafraîchisseurs d'air - Google Patents

Gels smectiques rafraîchisseurs d'air Download PDF

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Publication number
WO2009149120A1
WO2009149120A1 PCT/US2009/046022 US2009046022W WO2009149120A1 WO 2009149120 A1 WO2009149120 A1 WO 2009149120A1 US 2009046022 W US2009046022 W US 2009046022W WO 2009149120 A1 WO2009149120 A1 WO 2009149120A1
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WO
WIPO (PCT)
Prior art keywords
weight percent
approximately
composition
sodium
saponified
Prior art date
Application number
PCT/US2009/046022
Other languages
English (en)
Other versions
WO2009149120A4 (fr
Inventor
Chris A. Carlson
Original Assignee
Carlson Chris A
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 Carlson Chris A filed Critical Carlson Chris A
Publication of WO2009149120A1 publication Critical patent/WO2009149120A1/fr
Publication of WO2009149120A4 publication Critical patent/WO2009149120A4/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/048—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating air treating gels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/02—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air by heating or combustion

Definitions

  • Solid air freshener compositions have been marketed with a reasonable degree of success for many years. They are designed to release fragrance and/or freshening agent continuously, over a period of time.
  • Carboxymethyl cellulose can be used to form adequately solid gels but they are prone to synerisis, i.e., the discharge of oily liquids from the solid gel to the surface causing rapid fragrance evaporation, oxidation and loss of composition.
  • U.S. Pat. 3,969,280 disclosed the use of trivalent metal cations as cross-linking agents for a sodium carboxymethyl cellulose solid gel. These types of gels employ active heavy metals and are still prone to synerisis.
  • Some of these compositions are carrageenan based. Carageenan forms adequately solid gels, but are also prone to synerisis. Monovalent cations can be employed to increase gelling but again this does little to stop synerisis.
  • U.S. Pat. 2,927,055 disclosed stabilizing the carageenan gel with thickeners such as guar gum and gelatin but these types of solid gels are not cost effective.
  • compositions are sodium alginate based.
  • Sodium alginate is a common thickener. It can be cross-linked with calcium sulfate, in an aqueous solution, to produce an adequately solid gel embodiment.
  • Sodium alginate gels can be used in conjunction with surfactants and viscosity modifiers to entrap higher weight percentages of fragrance. This type of air freshener is more effective at controlling synerisis but exhibits mediocre fragrance release.
  • U.S. Pat. 7,073,965 disclosed in situ saponified stearic acid and isopropyl palmitate solid gels, and, cyclomethicone and hydrogenated castor oil solid gels. It is important to note the degree of saponificaton, i.e., saponifications are intentionally super-fatted, and some free fatty acids remain in mixture.
  • These embodiments and many other similar compositions are topical skin treatments not air freshener gels. When used as air fresheners: they oxidize, leave behind significant end of service residue and exhibit mediocre fragrance release.
  • Yet another feature of the present invention in its various embodiments is that it provides an inexpensive and effective solid air freshening gel composition capable of supporting its own weight.
  • a saponified fatty acid/triglyceride complex is believed to enhance gelation in the partially dissolved crystal lattice of the gelling agent.
  • a saponified fatty acid/triglyceride complex (SFACT) is also highly amorphous and adds ductility to the lattice thus improving its heat/melt characteristics.
  • SFACT is a natural surfactant and colligative emulsifier that replaces most harmful chemicals commonly found in industry standard EFCs.
  • the air freshener gels of the present invention comprise from 0.5-81.5 weight percent propylene glycol, 0.0-79.5 weight percent saponified fatty acids and/or triglycerides, 0.5-33.5 weight percent fragrance, 0.5-25.5 weight percent sodium stearate, 0.0-10.5 weight percent sodium tetraborate decahydrate, 0.0-1.5 weight percent dye and 0.0-1.0 weight percent dimethyl siloxane.
  • Saponified soybean oil provides unsaturated fatty acid soaps. They are effective natural surfactants and gelling agents, with an almost completely amorphous structure.
  • the saponified soybean oil maximizes smectic lattice formation and provides for a naturally plasticized embodiment, prone to thermally induced phase change.
  • Technical grade sodium stearate and saponified soybean oil also have very similar molecular weights; thereby aqueous mixtures exhibit excellent emulsion, gellation and interstitial entrapment of the fragrance. Fragrance is thereby evenly dispersed in the embodiment and efficiently released throughout service.
  • Fragrance is commercially available in proprietary compositions that are beyond the scope of the present invention. Economical formulations contain between approximately 10-90% carrier solvents depending upon the crystalline nature of the concentrated fragrance compound and cost. Fragrances using dipropylene glycol as their carrier solvent are the preferred embodiment, but other suitable fragrances alone or in combination would be apparent to one skilled in the art. It is important to note that dipropylene glycol is a miscible solvent in aqueous solutions and adsorbs the fragrance making for a more effective and even release of fragrance throughout service.
  • fragrance could be concentrated or dissolved in a carrier solvent.
  • carrier solvents include, but are not limited to dipropylene glycol, diethyl phthalate and benzyl benzoate alone or in combination.
  • Dimethyl siloxane is available commercially. Dow Corning fluid 1401 is the preferred embodiment. Dimethyl siloxane is a particularly effective anti-foaming agent at very low weight percentages.
  • compositions of the present invention are sufficiently rigid so as to be generally freestanding yet are sufficiently flexible to resist crumbling or breaking. These materials do not require a central core of other material to support the same, but can be poured directly into a container, which can be maintained in an upright condition.
  • the gels generally have sufficient strength so that they will not sag but will be maintained in the container so that air can easily and freely contact the surface of the same to transfer the fragrance to the surrounding room.
  • the composition of the present invention can also be melted by a heat source to hasten the release of fragrance to the surrounding room.
  • the amounts of material can be reduced significantly to form a gel which will be sufficiently rigid so as not to flow out of the container if tilted, yet cannot be said to be sufficiently self-supporting to enable the same to be packed in a relatively cylindrical or upright container having openings near the bottom.
  • the gels of the present invention are quickly formed by the reaction of the sodium tetraborate decahydrate with the aqueous sodium stearate and saponified soybean oil mixture; and, accordingly, no expensive equipment is necessary, the only equipment necessary being a sufficiently large double boiler equipped with a standard heating element and agitator to insure complete heating and mixing of the ingredients during reaction.
  • the finished embodiment is then poured into individual containers and allowed to cool in place to form a non-sagging gel.
  • the gel is slightly basic, having a pH in the range of 9-10.
  • composition and methods of freshening the air of the present invention will now be described in more full detail by the following examples, which are for the purposes of illustration only and are in no way to be considered as limiting.
  • a solid surfactant material was prepared from the following method and formulation: [0043] Pour 4.5 pounds of tap water into a 2-gallon plastic pitcher. Slowly add 9 pounds of aqueous sodium hydroxide. The preferred embodiment then consists of 9 pounds of water and 4.5 pounds of dissolved sodium hydroxide. Mix thoroughly and cover. Allow the mixture to cool to room temperature (69° F) before use.
  • the solution begins to rise and spatter as bound waters evaporate and escape from solution. Hand-stir the rising solution back down into the pot. The mixture goes from a solid, opaque paste to a translucent taffy-like consistency. Gate mix and hand stir frequently. Saponification ends approximately 30 minutes from when it began. Maintain the sleeve water temperature at 212° F for an additional 40 minutes and continue to gate mix and hand-stir frequently.
  • a solid air freshener gel was prepared from the following formulation:
  • This formulation is particularly suited for use with fragrances containing lower weight percentages of carrier solvent, i.e., citrus, lemon, apple and/or others containing terpenes, benzaldehyde and lactones.
  • carrier solvent i.e., citrus, lemon, apple and/or others containing terpenes, benzaldehyde and lactones.
  • a solid air freshener gel was prepared from the following formulation:
  • Example 4 was repeated with the exception that the amount of sodium tetraborate decahydrate is increased to 18 grams with a proportionate decrease in the propylene glycol content. This formulation performed as in Example 4.
  • the candle warmer would simply be turned off.
  • the gel then re-solidifies into a hardened mass which can then be covered to save for the next use, or (as noted above) allowed to simply release the fragrance under ambient conditions.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Cosmetics (AREA)

Abstract

L'invention porte sur un rafraîchisseur d'air perfectionné, qui est sensiblement exempt de synérèse, comprenant dans un système aqueux de 0,5 à 81,5 pour cent en poids de polyol, 0,0 à 79,5 pour cent en poids d'agent tensio-actif, 0,5 à 33,5 pour cent en poids de parfum, 0,5 à 25,5 pour cent en poids d'agent gélifiant, 0,0 à 10,5 pour cent en poids de borate de sodium, 0,0 à 1,5 pour cent en poids de colorant et 0,0 à 1,0 pour cent en poids d'agent anti-mousse.
PCT/US2009/046022 2008-06-03 2009-06-02 Gels smectiques rafraîchisseurs d'air WO2009149120A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5855408P 2008-06-03 2008-06-03
US61/058,554 2008-06-03

Publications (2)

Publication Number Publication Date
WO2009149120A1 true WO2009149120A1 (fr) 2009-12-10
WO2009149120A4 WO2009149120A4 (fr) 2010-01-28

Family

ID=41398487

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/046022 WO2009149120A1 (fr) 2008-06-03 2009-06-02 Gels smectiques rafraîchisseurs d'air

Country Status (1)

Country Link
WO (1) WO2009149120A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012041411A1 (fr) * 2010-09-30 2012-04-05 Cognis Ip Management Gmbh Gel rafraîchisseur d'air à durée de vie prolongée
CN111001282A (zh) * 2019-12-06 2020-04-14 杭州创绿家环保科技有限公司 一种室内voc抑制剂、制备方法及其应用

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030024997A1 (en) * 2001-05-04 2003-02-06 The Procter & Gamble Company Air freshening compositions, articles comprising same and methods
US20030060385A1 (en) * 1999-10-04 2003-03-27 Mane U.S.A. Foam fabric freshener composition and method
US20040000660A1 (en) * 2001-02-26 2004-01-01 The Procter & Gamble Company Composition for aroma delivery with improved stability and reduced foaming
US20060272199A1 (en) * 2005-06-02 2006-12-07 Bmc Manufacturing, Llc Aqueous gel candle for use with a warming device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030060385A1 (en) * 1999-10-04 2003-03-27 Mane U.S.A. Foam fabric freshener composition and method
US20040000660A1 (en) * 2001-02-26 2004-01-01 The Procter & Gamble Company Composition for aroma delivery with improved stability and reduced foaming
US20030024997A1 (en) * 2001-05-04 2003-02-06 The Procter & Gamble Company Air freshening compositions, articles comprising same and methods
US20060272199A1 (en) * 2005-06-02 2006-12-07 Bmc Manufacturing, Llc Aqueous gel candle for use with a warming device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012041411A1 (fr) * 2010-09-30 2012-04-05 Cognis Ip Management Gmbh Gel rafraîchisseur d'air à durée de vie prolongée
CN111001282A (zh) * 2019-12-06 2020-04-14 杭州创绿家环保科技有限公司 一种室内voc抑制剂、制备方法及其应用
CN111001282B (zh) * 2019-12-06 2022-01-18 杭州创绿家环保科技有限公司 一种室内voc抑制剂、制备方法及其应用

Also Published As

Publication number Publication date
WO2009149120A4 (fr) 2010-01-28

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