US20070098646A1 - Aerosol propellants comprising unsaturated fluorocarbons - Google Patents

Aerosol propellants comprising unsaturated fluorocarbons Download PDF

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Publication number
US20070098646A1
US20070098646A1 US11/590,344 US59034406A US2007098646A1 US 20070098646 A1 US20070098646 A1 US 20070098646A1 US 59034406 A US59034406 A US 59034406A US 2007098646 A1 US2007098646 A1 US 2007098646A1
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Mario Nappa
Joseph Creazzo
Allen Sievert
Ekaterina Swearingen
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EIDP Inc
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Priority to US11/590,344 priority Critical patent/US20070098646A1/en
Assigned to E. I. DU PONT DE NEMOURS AND COMPANY reassignment E. I. DU PONT DE NEMOURS AND COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CREAZZO, JOSEPH ANTHONY, SIEVERT, ALLEN CAPRON, NAPPA, MARIO JOSEPH, SWEARINGEN, EKATERINA N.
Publication of US20070098646A1 publication Critical patent/US20070098646A1/en
Priority to US13/594,007 priority patent/US8907145B2/en
Abandoned legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/30—Materials not provided for elsewhere for aerosols
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/10—Dispersions; Emulsions
    • A61K9/12—Aerosols; Foams
    • A61K9/124—Aerosols; Foams characterised by the propellant

Definitions

  • aerosol propellant compositions comprising unsaturated fluorocarbons or unsaturated hydrofluorocarbons. Also disclosed is the use of these compositions in preparing aerosol products.
  • compositions which include unsaturated fluorocarbons and hydrofluorocarbons. These compositions have zero ozone depletion potential (ODP), low global warming potential (GWP) and are lower VOC than hydrocarbons. These compositions are useful as pure components or in mixtures. These compositions are used as aerosol propellants.
  • ODP ozone depletion potential
  • GWP low global warming potential
  • One aspect is for a propellant comprising at least one fluorocarbon or hydrofluorocarbon selected from the group consisting of:
  • a further aspect is for a sprayable composition comprising the above-described propellant.
  • the sprayable composition is an aerosol.
  • compositions useful in aerosol i.e., pressurized, dispensing systems.
  • the disclosure herein relates in particular to the field of aerosol compositions which exhibit environmental responsibility while retaining desirable properties associated with aerosol dispensing systems.
  • Aerosol products are generally preferred over products dispensed by pumps or other systems. Many advantages of aerosols stem from the fact that air is not drawn into the aerosol container to replace ingredients dispensed. Thus the product is not exposed to deteriorating or oxidizing effects of air and/or transient moisture, the product maintains its sterility, and preservatives need not be included in the product composition. Consumers prefer aerosols for their convenience, ease of use and cleanliness. Broadly speaking, the characteristics of the spray dispensed from aerosol systems are superior to those of other systems.
  • the product composition is generally applied with a finer, more even spray than when applied with pump sprays. Pump-type dispensers tend to over-concentrate the product in one spot because of inability to maintain uniformity of product dispersal throughout the target area. This is important, for example, in a hairspray product where it is desirable that the spray retain manageability and hold of the hair style yet not weigh the hair down, give an unnatural hold, or feel sticky to touch.
  • one aspect to provide a composition useful in an aerosol dispensing system which achieves the advantageous properties of an aerosol.
  • compositions may be formulated with active ingredient from about 1-15% by weight, or more.
  • Total propellant may vary from 15-95%.
  • an aerosol dispensing system comprising a sealed container equipped with an aerosol dispensing valve and containing therein the composition and active ingredient as above.
  • vapor pressure is meant the pressure exerted when a liquefied propellant gas is in equilibrium with its vapor in a closed container, such as an aerosol can. Vapor pressure can be measured by connecting a pressure gauge to the valve on an aerosol can or gas cylinder containing the vapor/liquid mixture.
  • a standard of measurement of vapor pressure in the U.S. aerosol industry is pounds per square inch gauge (psig) with the gas/liquefied mixture at constant temperature, most commonly at 70° F. (21° C).
  • the vapor pressure of liquefied gases most widely employed as aerosol propellants will vary over the range of about 20 to 90 psig (138 to 621 kPa) at 70° F. (21° C).
  • the propellant systems disclosed herein have vapor pressures in this range.
  • compositions useful in an aerosol dispensing system comprise unsaturated fluorocarbons (FCs) and/or hydrofluorocarbons (HFCs) alone or in mixture with each other or other suitable propellants, including saturated HFCs, hydrocarbons (HCs), dimethylether, carbon dioxide, nitrous oxide, and nitrogen.
  • FCs unsaturated fluorocarbons
  • HFCs hydrofluorocarbons
  • HCs hydrocarbons
  • dimethylether including carbon dioxide, nitrous oxide, and nitrogen.
  • active ingredients and additives may be included in the formulation in order to prepare different forms of end products by numerous methods known to those skilled in the art.
  • R 1 and R 2 are, independently, C 1 to C 6 perfluoroalkyl groups.
  • R 1 and R 2 groups include, but are not limited to, CF 3 , C 2 F 5 , CF 2 CF 2 CF 3 , CF(CF 3 ) 2 , CF 2 CF 2 CF 2 CF 3 , CF(CF 3 )CF 2 CF 3 , CF 2 CF(CF 3 ) 2 , C(CF 3 ) 3 , CF 2 CF 2 CF 2 CF 3 , CF 2 CF 2 CF(CF 3 ) 2 , C(CF 3 ) 2 C 2 F 5 , CF 2 CF 2 CF 2 CF 2 CF 3 , CF(CF 3 ) CF 2 C 2 F 5 , and C(CF 3 ) 2 CF 2 C 2 F 5 .
  • Compounds of Formula I may be prepared by contacting a perfluoroalkyl iodide of the formula R 1 I with a perfluoroalkyltrihydroolefin of the formula R 2 CH ⁇ CH 2 to form a trihydroiodoperfluoroalkane of the formula R 1 CH 2 CHIR 2 . This trihydroiodoperfluoroalkane can then be dehydroiodinated to form R 1 CH ⁇ CHR 2 .
  • the olefin R 1 CH ⁇ CHR 2 may be prepared by dehydroiodination of a trihydroiodoperfluoroalkane of the formula R 1 CHICH 2 R 2 formed in turn by reacting a perfluoroalkyl iodide of the formula R 2 I with a perfluoroalkyltrihydroolefin of the formula R 1 CH ⁇ CH 2 .
  • Said contacting of a perfluoroalkyl iodide with a perfluoroalkyltrihydroolefin may take place in batch mode by combining the reactants in a suitable reaction vessel capable of operating under the autogenous pressure of the reactants and products at reaction temperature.
  • suitable reaction vessels include fabricated from stainless steels, in particular of the austenitic type, and the well-known high nickel alloys such as Monel® nickel-copper alloys, Hastelloy® nickel based alloys and Inconel® nickel-chromium alloys.
  • reaction may take be conducted in semi-batch mode in which the perfluoroalkyltrihydroolefin reactant is added to the perfluoroalkyl iodide reactant by means of a suitable addition apparatus such as a pump at the reaction temperature.
  • a suitable addition apparatus such as a pump at the reaction temperature.
  • the ratio of perfluoroalkyl iodide to perfluoroalkyltrihydroolefin should be between about 1:1 to about 4:1, preferably from about 1.5:1 to 2.5:1. Ratios less than 1.5:1 tend to result in large amounts of the 2:1 adduct as reported by Jeanneaux, et al. in Journal of Fluorine Chemistry, Vol. 4, pages 261-270 (1974).
  • Preferred temperatures for contacting of said perfluoroalkyl iodide with said perfluoroalkyltrihydroolefin are preferably within the range of about 150° C. to 300° C., preferably from about 170° C to about 250° C., and most preferably from about 180° C. to about 230° C.
  • Suitable contact times for the reaction of the perfluoroalkyl iodide with the perfluoroalkyltrihydroolefin are from about 0.5 hour to 18 hours, preferably from about 4 to about 12 hours.
  • the trihydroiodoperfluoroalkane prepared by reaction of the perfluoroalkyl iodide with the perfluoroalkyltrihydroolefin may be used directly in the dehydroiodination step or may preferably be recovered and purified by distilled prior to the dehydroiodination step.
  • the dehydroiodination step is carried out by contacting the trihydroiodoperfluoroalkane with a basic substance.
  • Suitable basic substances include alkali metal hydroxides (e.g., sodium hydroxide or potassium hydroxide), alkali metal oxide (for example, sodium oxide), alkaline earth metal hydroxides (e.g., calcium hydroxide), alkaline earth metal oxides (e.g., calcium oxide), alkali metal alkoxides (e.g., sodium methoxide or sodium ethoxide), aqueous ammonia, sodium amide, or mixtures of basic substances such as soda lime.
  • Preferred basic substances are sodium hydroxide and potassium hydroxide.
  • Solvents suitable for the dehydroiodination step include one or more polar organic solvents such as alcohols (e.g., methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, and tertiary butanol), nitriles (e.g., acetonitrile, propionitrile, butyronitrile, benzonitrile, or adiponitrile), dimethyl sulfoxide, N,N-dimethylformamide, N,N-dimethylacetamide, or sulfolane.
  • solvent may depend on the boiling point product and the ease of separation of traces of the solvent from the product during purification.
  • ethanol or isopropylene glycol e.g., ethanol or isopropanol
  • isopropanol e.g., isopropanol
  • isobutanol e.g., isobutan
  • the dehydroiodination reaction may be carried out by addition of one of the reactants (either the basic substance or the trihydroiodoperfluoroalkane) to the other reactant in a suitable reaction vessel.
  • Said reaction may be fabricated from glass, ceramic, or metal and is preferably agitated with an impellor or stirring mechanism.
  • Temperatures suitable for the dehydroiodination reaction are from about 10° C. to about 100° C., preferably from about 20° C. to about 70° C.
  • the dehydroiodination reaction may be carried out at ambient pressure or at reduced or elevated pressure.
  • dehydroiodination reactions in which the compound of Formula I is distilled out of the reaction vessel as it is formed.
  • the dehydroiodination reaction may be conducted by contacting an aqueous solution of said basic substance with a solution of the trihydroiodoperfluoroalkane in one or more organic solvents of lower polarity such as an alkane (e.g., hexane, heptane, or octane), aromatic hydrocarbon (e.g., toluene), halogenated hydrocarbon (e.g., methylene chloride, ethylene dichloride, chloroform, carbon tetrachloride, or perchloroethylene), or ether (e.g., diethyl ether, methyl tert-butyl ether, tetrahydrofuran, 2-methyl tetrahydrofuran, dioxane, dimethoxyethane, diglyme, or tetraglyme) by in the presence of a phase transfer catalyst.
  • an alkane e.g., hexane, hept
  • Suitable phase transfer catalysts include quaternary ammonium halides (e.g., tetrabutylammonium bromide, tetrabutylammonium hydrosulfate, triethylbenzylammonium chloride, dodecyltrimethylammonium chloride, and tricaprylylmethylammonium chloride), quaternary phosphonium halides (e.g., triphenylmethylphosphonium bromide and tetraphenylphosphonium chloride), cyclic ether compounds known in the art as crown ethers (e.g., 18-crown-6 and 15-crown-5).
  • quaternary ammonium halides e.g., tetrabutylammonium bromide, tetrabutylammonium hydrosulfate, triethylbenzylammonium chloride, dodecyltrimethylammonium chloride, and tricaprylylmethylammoni
  • the dehydroiodination reaction may be conducted in the absence of solvent by adding the trihydroiodoperfluoroalkane to a solid or liquid basic substances.
  • Suitable reaction times for the dehydroiodination reactions are from about 15 minutes to about six hours or more depending on the solubility of the reactants. Typically the dehydroiodination reaction is rapid and requires about 30 minutes to about three hours for completion.
  • the compound of formula I may be recovered from the dehydroiodination reaction mixture by phase separation after addition of water, by distillation, or by a combination thereof.
  • compositions disclosed herein may comprise a single compound of Formula I, for example, one of the compounds in Table 1, or may comprise a combination of compounds of Formula I.
  • 1 -Bromo-3,3,4,4,4-pentafluoro-1 -butene may be prepared by a three step sequence beginning with reaction of phosphorous tribromide with 3,3,4,4,4-pentafluoro-1-butanol to give 4-bromo-1,1,1,2,2-pentafluorobutane.
  • Thermal bromination of 4-bromo-1,1,1,2,2-pentafluorobutane at 350-400° C. gives 4,4-dibromo-1,1,1,2,2-pentafluorobutane which may in turn be heated with powdered potassium hydroxide to give the desired bromobutene.
  • 2-Bromo-3,4,4,4-tetrafluoro-3-(trifluoromethyl)-1-butene may be prepared by addition of bromine to 3,4,4-tetrafluoro-3-(trifluoromethyl)-1-butene followed by treatment of the resulting dibromide with ethanolic potassium hydroxide.
  • Aerosol propellants may comprise a single compound as listed, for example, in Table 2, or may comprise a combination of compounds from Table 2 or, alternatively, a combination of compounds from Table 1, Table 2, Table 3, and/or Formula I.
  • the amount of the fluorocarbons (FCs) or HFCs contained in the present compositions can vary widely, depending the particular application, and compositions containing more than trace amounts and less than 100% of the compound are within broad the scope of the present disclosure.
  • the compositions have a Global Warming Potential (GWP) of not greater than 150, more preferably not greater than 100, and even more preferably not greater than 75.
  • GWP Global Warming Potential
  • GWP is measured relative to that of carbon dioxide and over a 100-year time horizon, as defined in “The Scientific Assessment of Ozone Depletion, 2002, a report of the World Meteorological Association's Global Ozone Research and Monitoring Project,” which is incorporated herein by reference.
  • the present compositions also preferably have an Ozone Depletion Potential (ODP) of not greater than 0.05, more preferably not greater than 0.02 and even more preferably about zero.
  • ODP Ozone Depletion Potential
  • ODP is as defined in “The Scientific Assessment of Ozone Depletion, 2002, A report of the World Meteorological Association's Global Ozone Research and Monitoring Project,” which is incorporated herein by reference.
  • compositions may be prepared by any convenient method to combine the desired amounts of the individual components.
  • a preferred method is to weigh the desired component amounts and thereafter combine the components in an appropriate vessel. Agitation may be used, if desired.
  • the propellants may comprise a single compound as listed, for example, in Table 1, or may comprise a combination of compounds of Formula I, Table 1, Table 2, and/or Table 3. Additionally, many of the compounds described herein may exist as different configurational isomers or stereoisomers. The disclosure herein is intended to include all single configurational isomers, single stereoisomers, or any combination thereof.
  • Fl 1 E is meant to represent the E-isomer, Z-isomer, or any combination or mixture of both isomers in any ratio.
  • F33E by which is represented the E-isomer, Z-isomer, or any combination or mixture of both isomers in any ratio.
  • the propellants disclosed herein have a Global Warming Potential (GWP) of not greater than 150, more preferably not greater than 100, and even more preferably not greater than 75.
  • GWP Global Warming Potential
  • “GWP” is measured relative to that of carbon dioxide and over a 100-year time horizon, as defined in “The Scientific Assessment of Ozone Depletion, 2002, a report of the World Meteorological Association's Global Ozone Research and Monitoring Project,” which is incorporated herein by reference.
  • the present compositions also preferably have an Ozone Depletion Potential (ODP) of not greater than 0.05, more preferably not greater than 0.02 and even more preferably about zero.
  • ODP Ozone Depletion Potential
  • ODP is as defined in “The Scientific Assessment of Ozone Depletion, 2002, A report of the World Meteorological Association's Global Ozone Research and Monitoring Project,” which is incorporated herein by reference.
  • compositions may be prepared by any convenient method to combine the desired amounts of the individual components.
  • a preferred method is to weigh the desired component amounts and thereafter combine the components in an appropriate vessel. Agitation may be used, if desired.
  • the propellant composition comprises, more preferably consists essentially of, and, even more preferably, consists of compositions disclosed herein.
  • the active ingredient to be sprayed together with inert ingredients, solvents, and other materials may also be present in the sprayable mixture.
  • the sprayable composition is an aerosol.
  • Another embodiment of the present disclosure provides a process for producing aerosol products comprising the step of adding a composition as disclosed herein to active ingredients in an aerosol container, wherein said composition functions as a propellant.
  • compositions are capable of providing nonflammable, liquefied gas propellant and aerosols that do not contribute substantially to global warming.
  • the present compositions can be used to formulate a variety of industrial aerosols or other sprayable compositions such as contact cleaners, dusters, lubricant sprays, mold release sprays, and the like, and consumer aerosols such as personal care products (such as, e.g., hair sprays, deodorants, and perfumes), household products (such as, e.g., waxes, polishes, pan sprays, room fresheners, and household insecticides), and automotive products (such as, e.g., cleaners and polishers), as well as medicinal materials such as anti-asthma and anti-halitosis medications. Examples of this includes metered dose inhalers (MDIs) for the treatment of asthma and other chronic obstructive pulmonary diseases and for delivery of medicaments to accessible mucous membranes or intranasally.
  • MDIs metered dose inhalers
  • the medicinal aerosol and/or propellant and/or sprayable compositions in many applications include, in addition to a compound disclosed herein, a medicament such as a beta-agonist, a corticosteroid or other medicament, and, optionally, other ingredients, such as surfactants, solvents, other propellants, flavorants, and other excipients.
  • a medicament such as a beta-agonist, a corticosteroid or other medicament
  • other ingredients such as surfactants, solvents, other propellants, flavorants, and other excipients.
  • the compositions disclosed herein unlike many compositions previously used in these applications, have good environmental properties and are not considered to be potential contributors to global warming.
  • the present compositions therefore provide in certain preferred embodiments substantially nonflammable, liquefied gas propellants having very low GWPs.
  • compositions and methods disclosed and claimed herein can be made and executed without undue experimentation in light of the present disclosure. While the compositions and methods disclosed herein have been described in terms of preferred embodiments, it will be apparent to those of skill in the art that variations may be applied to the compositions and methods and in the steps or in the sequence of steps of the method described herein without departing from the concept, spirit, and scope of the present disclosure. More specifically, it will be apparent that certain agents which are chemically related may be substituted for the agents described herein while the same or similar results would be achieved. All such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the spirit, scope, and concept of the present disclosure as defined by the appended claims.
  • VOC volatile organic compound
  • hairspray was formulated as follows: Wt % Octylacrylamide/acrylates/butylaminoethyl 5.0 methylacrylate copolymer (National Starch Amphomer LV-71) AMP (2-amino-2-methyl-1-propanol) 1.0 Water 3.5 Ethanol 55.0 Propellant 35.0 Vapor Pressure @ 70 ⁇ F. 40 psig
  • the formulation was one phase indicating complete miscibility and showed good spray patterns and delivery.
  • An air freshener was formulated as follows: Wt % Fragrance (Dragoco 0/716873 mixed flowers scent) 1.0 Water 4.0 Ethanol 30.0 Propellant 65.0 Vapor Pressure @ 70 ⁇ F. 48 psig
  • the formulation was one phase indicating complete miscibility and showed good spray patterns and delivery.
  • a fragrance was formulated as follows: Wt % Perfume (Dragoco 0/716873 mixed flowers scent) 3.0 Water 15.0 Ethanol 70.0 Propellant 12.0 Vapor Pressure @ 70 ⁇ F. 17 psig
  • the formulation was one phase indicating complete miscibility and showed good spray patterns and delivery.
  • An aerosol antiperspirant was formulated as follows: Wt % Aluminum chlorohydrate (Reheis Activated ACH 10.0 Modified R277-265A) Isopropyl myristate 6.0 Silicone fluid DC-344 6.0 Quaternium-18 hectorite (Rheox Bentone 38) 0.5 Ethanol 2.0 Propellant 75.0 Propellant 12.0 Vapor Pressure @ 70 ⁇ F. 48 psig

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  • Chemical & Material Sciences (AREA)
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US13/594,007 US8907145B2 (en) 2005-11-01 2012-08-24 Aerosol propellants comprising unsaturated fluorocarbons

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US11/590,344 US20070098646A1 (en) 2005-11-01 2006-10-30 Aerosol propellants comprising unsaturated fluorocarbons

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EP (2) EP1954778B1 (enExample)
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CA (2) CA2625844C (enExample)
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US8658708B2 (en) 2007-12-19 2014-02-25 E I Du Pont De Nemours And Company Foam-forming compositions containing azeotropic or azeotrope-like mixtures containing Z-1,1,1,4,4,4-hexafluoro-2-butene and methyl formate and their uses in the preparation of polyisocyanate-based foams
US8821749B2 (en) 2010-04-26 2014-09-02 E I Du Pont De Nemours And Company Azeotrope-like compositions of E-1,1,1,4,4,4-hexafluoro-2-butene and 1-chloro-3,3,3-trifluoropropene
US20140284516A1 (en) * 2013-03-21 2014-09-25 Montfort A. Johnsen Compositions For Totally Non-Flammable Aerosol Dusters
US8907145B2 (en) 2005-11-01 2014-12-09 E I Du Pont De Nemours And Company Aerosol propellants comprising unsaturated fluorocarbons
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US9554981B2 (en) 2012-09-14 2017-01-31 The Procter & Gamble Company Aerosol antiperspirant compositions, products and methods
US9579265B2 (en) 2014-03-13 2017-02-28 The Procter & Gamble Company Aerosol antiperspirant compositions, products and methods
US9662285B2 (en) 2014-03-13 2017-05-30 The Procter & Gamble Company Aerosol antiperspirant compositions, products and methods
US11083915B2 (en) 2013-07-16 2021-08-10 The Procter & Gamble Company Antiperspirant spray devices and compositions
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CN105154011B (zh) 2017-10-20
CN101300322B (zh) 2015-09-16
ES2639404T3 (es) 2017-10-26
EP2327753A2 (en) 2011-06-01
JP2009513813A (ja) 2009-04-02
JP5425470B2 (ja) 2014-02-26
CN105154011A (zh) 2015-12-16
CA2625844C (en) 2014-05-27
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CN101300322A (zh) 2008-11-05
US20120318828A1 (en) 2012-12-20
EP2327753A3 (en) 2014-12-10
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CA2625844A1 (en) 2007-05-10
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