WO1997010008A1 - Emulsion aqueuse desodorisante, utilisation d'une emulsion aqueuse et procede de mise en phase gazeuse d'une emulsion aqueuse - Google Patents
Emulsion aqueuse desodorisante, utilisation d'une emulsion aqueuse et procede de mise en phase gazeuse d'une emulsion aqueuse Download PDFInfo
- Publication number
- WO1997010008A1 WO1997010008A1 PCT/FR1996/001390 FR9601390W WO9710008A1 WO 1997010008 A1 WO1997010008 A1 WO 1997010008A1 FR 9601390 W FR9601390 W FR 9601390W WO 9710008 A1 WO9710008 A1 WO 9710008A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- emulsion
- emulsion according
- concentration
- emulsifier
- advantageously
- Prior art date
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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
- A61L9/02—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air by heating or combustion
- A61L9/03—Apparatus therefor
-
- 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
- A61L9/01—Deodorant compositions
Definitions
- Deodorant aqueous emulsion use of an aqueous emulsion and method of gaseous phase of an aqueous emulsion.
- the present invention relates to an aqueous vaporizable emulsion intended to be used in vaporized or fumigated form (gas phase) for the purpose of treating premises such as hotels, offices, etc. or outside sites.
- the invention also relates to the use of such an aqueous emulsion in the gas phase and to a process for placing in the gas phase of such an aqueous emulsion.
- the emulsion of the present invention must also be able to be spread in the sprayed state on odoriferous sites, such as household waste dumps for example.
- the emulsion should also have good stability for a long shelf life.
- the viscosity is in the range from 10 to 1000 cPs, advantageously from 10 to 200 cPs, and preferably from 50 to 150 cPs.
- the emulsion can comprise a surface-active agent, for example copoliolcéthydiméthicone with a concentration of 0,1 to 1%.
- a surface-active agent for example copoliolcéthydiméthicone with a concentration of 0,1 to 1%.
- the lowering of the surface tension provided by the addition of this agent contributes to reducing the viscosity of the emulsion.
- said molecules are molecules of the family of hydroxycarboxylic acids, advantageously molecules of 12 - hydroxy - octa - acids.
- the emulsifier is present with a concentration of 0.05 to 2%, advantageously from 0.05 to 0.4% and preferably from 0.1 to 0.2%.
- insecticity it can be present with a concentration of 0.001 to 10%, advantageously 0.01 to 1% and preferably 0.1 to 0.5%.
- fragrance it can be present with a concentration of 0.01 to 30%.
- the bacteriostatic agent can be present with a concentration of 0.05 to 5%, advantageously of 0.1 to 1.0%, and preferably of 0.5%.
- the emulsion can comprise a neutralizing agent with a concentration of 0.01 to 2%, advantageously 0.05 to 1% and of preferably from 0.1 to 0.5%.
- the neutralizing agent is ammonium carbonate or ammonium bicarbonate.
- the emulsifier used in the present invention is a hydrophobically neutralized modified acrylic resin acid.
- the resin is a crosslinked polymer so that the emulsifier is a polymeric emulsifier.
- This type of polymeric emulsifier makes it possible to obtain emulsions with very low viscosity with extremely low levels of emulsifier.
- Such an emulsifier will be simply designated by the term "emulsifier" in the remainder of the text.
- This emulsifier can be used with a concentration of 0.05 to 2%. A concentration of 0.1 to 0.2% will however be preferred.
- the emulsion obtained is an emulsion having great stability.
- the emulsifier can be prepared in the form of a gel containing 0.2% of emulsifier and the rest of the water.
- the emulsifier acts like a sponge that absorbs water.
- the gel is then in the form of a more or less viscous liquid consisting of an agglutination of gel molecules engorged with water.
- an emulsion prepared with said emulsifier defined above cannot be diluted with water but only with a gel composed of said emulsifier and water. It is a hydrophobic emulsifier whose molecules take up water and whose surfaces of molecules are capable of binding with oil. Thus, the oil droplets are trapped between the gel molecules.
- l emulsifier used in order to explain how it was possible thanks to the invention to lower the viscosity of the emulsifier, and consequently of the emulsion, it is necessary to set out a more detailed analysis of the chemical structure of l emulsifier used. It is a copolymer made up of blocks of polyacrylic acids and blocks of alkyl methacryiate. If other manipulations were not necessary, this polymer would be perfectly soluble in water. However, during the polymerization necessary for obtaining it, a third ingredient is also added, in this case a crosslinking agent to form a three-dimensional network which is now no longer soluble in water at all. However, the particles thus formed have a significant amount of available hydrophilic groups, and although the resin formed is no longer soluble in water at all, it is rather hydrophilic: in fact, it will be able to absorb water and act like some sort of sponge.
- Acrylic acid is hydrophilic and after neutralization of the carboxylic acid groups, it is even more hydrophilic.
- Each carboxilate anion can bind approximately with 20 molecules of water.
- blocks of alkyl methacryiate which are perfectly hydrophobic.
- steric stabilization in which oil droplets are immobilized by anchoring gel particles between them.
- this type of emulsifier 1 has a second trapping property which is related to the geometric configuration of the gel particles. They are in the form of non-crosslinked polymer chains. This chain configuration inevitably leads to a tangle of these chains.
- the emulsification of an oil with the emulsifier chosen comes from two sources: steric stabilization and anchoring by interparticle interaction.
- the emulsification capacity is therefore determined by the degree of steric stabilization, but also by the degree of entanglement. It is not known how many "tangle bonds" are present in these gel structures. However, it is known that a minimum of these bonds is required to produce an emulsion.
- the interactions between the gel particles and the oil droplets and between the gel particles themselves can be diagrammed as shown in the single figure.
- SUBSTITUTE SHEET (RULE 26)
- One of the parameters that is directly determined by interparticle interactions is viscosity. The more tangled bonds, the higher the viscosity. Therefore, the number of bonds between the gel particles can be varied to affect the viscosity. However, if the number of particles is excessively reduced, this results in a loss of stability of the emulsion.
- the spraying capacity of the emulsion is another particularly important property in the context of the present invention.
- it is important to be able to limit the size of the particles to be sprayed in a relatively small range.
- the particle size distribution presents a curve of the Gaussian type whose width depends essentially on two parameters, namely the viscosity and the surface tension.
- a surfactant is added to the emulsion, in this case cethyldimethycone copoliol available from the company Th. Goldschmidt under the trade name ABIL EM 90. This product allows to reduce the surface tension, while maintaining the stability of the emulsion.
- This copoliol also has a second effect: it makes it possible to partially restore the tangled bonds which were broken during the above-mentioned stirring process.
- the aforementioned stirring method which makes it possible to break the tangled bonds and the subsequent addition of a surfactant making it possible to partially restore these same tangled bonds, it is possible to accurately determine the viscosity of the emulsion by lowering its surface tension which helps to limit the size of the particles in a very limited range.
- Concentrations of surfactants from 0 to 0.2% are sufficient in emulsions containing a fragrance, an insecticide or a bacteriostatic agent, and a concentration of 0.3 to 0.4% is sufficient in an emulsion containing a deodorant.
- neutralizing agent which has the effect of adjusting the pH between 6 and 8 depending on the type of neutralizer used.
- the use of neutralizing agent has the effect of considerably increasing the water absorption capacity. Macroscopically, this results in a considerable decrease in viscosity.
- neutralizing agent mention may be made of triethanolamine, but the latter contains small amounts of diethanolamine which forms nitrogenous condensates known under the term of nitrosamine which are in reality highly carcinogenic and carcinogenic products.
- neutralizing agents of the sodium carbonate type it is preferred to use neutralizing agents of the sodium carbonate type.
- ammonium carbona-te ammonium carbonate or ammonium bicarbonate.
- ammonium carbona-te ammonium carbonate
- ammonium bicarbonate ammonium bicarbonate
- the concentration of the neutralizing agent may be from 0.01 to 2%, advantageously from 0.05 to 1% and preferably from 0.1 to 0.5%.
- the deodorant preferably used in the emulsion of the present invention is zinc ricinoleate which is a complex of the Zn2 + ion and of two molecules of neutralized ricinoleic acid whose chemical name is 12 hydroxy - octa - [9] - decenoic. Its chemical formula is C18H34O3.
- Zinc ricinoleate has deodorant qualities that are safe for the environment. In fact, zinc has no harmful effects on the environment.
- Ricinoleic acid is actually a fatty acid obtained from castor oil. The free acid is obtained by hydrolysis of castor oil, then separation of the crude fatty acid and the glycerin fraction. Finally, the crude acid is purified using various appropriate techniques.
- Ricinoleic acid is a very specific acid since it is a fatty acid which carries a hydroxy group on the main chain. In nature, hydroxy fatty acids are present in all living organisms but almost never in commercially attractive and accessible amounts.
- the ricinoleate anion is a molecule that is rich in electrons, since it has a hydroxy group and a carboxyl group. Ricinoleic acid is therefore a hydroxycarboxylic acid.
- Zinc ricinoleate is the preferred deodorant for the present invention, but there are other deodorants with other chemical formulas.
- Zinc ricinoleate is a complex formed of a bivalent metal ion, in this case Zn 2+ and two molecules of a ricinoleate ion. Both the metal ion and the molecules can vary provided they meet very specific requirements. As for the metal ion, it must be a polyvalent metal ion, but preferably divalent having a s ⁇ 3 hybridization. Metal ions with sp ⁇ hybridization can bind four ligants whereby the binding strength and properties of these ligants are identical.
- the Zn 2+ ion is not the only one to exhibit sp ⁇ hybridization.
- Cadmium and mercury also meet this requirement.
- metals are highly harmful to the environment and to humans, and therefore are only very difficult to use in the deodorant of the invention which is intended to be sprayed. Strictly speaking, it would be possible to envisage the use of cadmium or mercury in closed systems regenerated from the outside.
- hybridizations such as those of the d 2 s ⁇ 3 type which takes place with certain transition metals such as cobalt, iron, chromium and nickel.
- a carbon atom in the non-hybridized state can combine with two other molecules or atoms such as the hydrogen atom to form a carbene CH2.
- this molecule is extremely reactive.
- the current species is actually CH4, that is to say metane.
- the origin of this existence is that the two electrons from the 2s orbital are split and one is promoted to the 2pz orbital. This costs energy, but this is completely offset by the formation of two additional CH bonds.
- a CH4 molecule is formed.
- Each orbital now contains two electrons and its structure of rare gas is obtained. It is essential to note that all the orbitals, and therefore all the links are identical in energy. This stems from the fact that a hybrid is formed equalizing the energy levels: this is the sp3 hybridization.
- each ion or molecule that has excess electrons available can coordinate with the coordinating metal ion defined above.
- the ion Zn 2+ products containing nitrogen, sulfur, oxygen, phosphorus, chlorine, bromine, fluorine, iodine, tellurium, selene, arsenic or antimony, etc. can be absorbed. It is essential to note that this absorption is an exchange process.
- the original complex of Zn 2+ must be based on weak ligants, using an atom which has a relatively small stability constant.
- the oxygen atom is most suitable since most of the complexes are more stable compared to hydrogenated complexes. It is a first requirement that the ligants must satisfy.
- the requirement that the ligants must meet is that they must continue to be linked to the coordinating zinc ion also after an exchange has taken place. This necessarily means that the appropriate ligants must be such that a molecule has two sites which can be linked to the coordinating Zn ion. This is the second requirement that the ligants must meet.
- zinc ricinoleate is used in the emulsion of the present invention with a concentration of 0.05 to 30%, advantageously from 0.05 to 3%, and preferably from 0.5 to 1.5%.
- concentration preferably (0.5 to 1.5%) is that allowing an emulsion ready to be sprayed to be obtained, whereas an emulsion containing more than 10% of zinc ricinoleate is an emulsion intended to be stored and then diluted as will be described below.
- R3NI The left part of the diagram represents the Zn 2+ ion to which two molecules of ricinoleic acid are linked. Each termination of each ricinoleic acid molecule is terminated with a hydroxy group and a carboxyl group.
- R3N represents a smelly molecule having a radical to which is attached a nitrogen atom. Nitrogen is linked to the three radicals R by three electrons, which leaves a free doublet shown diagrammatically by the vertical bar after N.
- the radical R can be an alkyl group or another group capable of binding an electron of nitrogen. An example is triethylamine which is a foul-smelling product.
- Insecticide Any type of insecticide that is insoluble or poorly soluble in water can be used in admixture with the above-mentioned emulsifier. However, an environmentally friendly insecticide will be preferred. In this case, a perfectly suitable insecticide is 3- phenoxybenzyl ether 2- (4-ethoxyphenyl) -2-methylpro ⁇ ylic. Indeed, this chemical compound contains only carbon, hydrogen and oxygen atoms which have no phytotoxicity and very low toxicity towards mammals. This insecticidal compound of formula C25H28O3 is very slightly soluble, not to say insoluble in water, since its solubility is less than one part per billion.
- the above-mentioned insecticide or another suitable can be mixed with the emulsifier defined above with a concentration of 0.001 to 10%, advantageously 0.01 to 1% and preferably 0.1 to 0.5%.
- the emulsion obtained by mixing a deodorant or an insecticide as defined above with an emulsifier as defined above with respective defined concentrations has a very low viscosity up to 10 CPs allowing the emulsion to be sprayed with sufficiently small droplets.
- an emulsion with 1% zinc ricinoleate and 0.2% emulsifier (the rest being water) is perfectly suited to be sprayed.
- an emulsion containing more than approximately 10% of zinc ricinoleate and 0.2% of said emulsifier is at first sight not suitable for being sprayed but only stored for subsequent dilution. This characteristic is an important characteristic because it makes it possible to reduce the volume of the emulsion during transport and storage.
- the emulsion as defined above can be diluted with a gel containing a certain concentration of an emulsifier comprising a hydrophobically neutralized modified crosslinked acrylic acid polymer already used in the emulsion defined above.
- a typical gel composition of this type may for example contain 0.2% of said emulsifier and the remainder of water.
- terpenes and in particular farnesol which is a sesquiterpene which has a negligible odor which is not perceptible in association with an emulsion containing a fragrance.
- Farnesol can for example be used with concentrations of 0.5 to 5%, advantageously from 0.01 to 1.0%, and preferably 0.5%. Thanks to the above-mentioned stirring process as well as the optional addition of a surfactant and a neutralizing agent, an emulsion based on this can be obtained.
- insecticide with a viscosity of the order of 20 to 100 centipoise.
- a deodorant emulsion can also comprise, in stable mixture, a fragrance emulsion with an emulsifier. It is therefore possible to mix two emulsions, one deodorant and the other odoriferous, provided that the emulsifier concentrations used are not too different.
- the abovementioned emulsion may comprise, in stable mixture, a dilution gel containing an emulsifier for diluting said emulsion.
- dilution gel comprising water and an emulsifier.
- the emulsions according to the invention can therefore be mixed together and diluted with a gel.
- the only condition to be satisfied for the added emulsions and the dilution gel relates to the use of the same emulsifier with a concentration of the same order of magnitude.
- the emulsifier in the four emulsions defined above and in the gel can be present with a concentration of approximately 0.2%. With these five products (four emulsions and one gel), it is possible to obtain a combined emulsion of homogeneous structure.
- the four emulsions can be prepared with higher or lower concentrations of zinc ricinoleate, fragrance, bacteriostatic agent and insecticide respectively and the dilution gel serves as a diluting agent to lower and fix the concentrations of zinc ricinoleate, perfume, bacteriostatic agent and insecticide at the desired values. It is therefore possible from the four emulsions defined above to prepare a combined emulsion by simply mixing defined parts of each emulsion with dilution gel.
- the spraying of the emulsion can be carried out using any spraying device such as a pump or an aerosol valve.
- the sprayed emulsion can be spread directly on an odoriferous site emitting foul smells, such as a household waste discharge or an area to be insect-treated. Spreading the sprayed emulsion will eliminate odors from such sites or eliminate insects.
- the emulsion can be used in a fumigation device capable of bringing said emulsion into the gaseous phase to be diffused into the atmosphere for air handling of premises.
- a suitable fumigation device is for example disclosed in document EP-A-0 401 060, or in patent application FR-95 01037.
- the emulsion is sprayed against a wall heated to a temperature higher than the vaporization temperature of said emulsion, so that said emulsion is vaporized instantaneously in gaseous form, therefore with a phase change.
- this vaporization temperature must be higher than 250 ° C.
- the use of an emulsion according to the invention is very advantageous, because of its high water content. In the example cited above, there is almost 95% of water in the emulsion, and taking into account the coefficient of expansion of the water which is 1,530, a very widespread diffusion of the zinc ricinoleate, the perfume and the bacteriostatic agent is carried out in the room to be treated .
- the advantageous characteristics of the invention therefore depend as much on the emulsion itself, as on the ability to mix the emulsion with other emulsions based on the same emulsifier, as well as on the advantageous use of 'Such an emulsion or a combined emulsion in a fumigation device.
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- 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)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9511700A JPH11512308A (ja) | 1995-09-14 | 1996-09-11 | 脱臭水性エマルジョン、水性エマルジョンの使用法、及び水性エマルジョンの気化方法 |
AU69914/96A AU6991496A (en) | 1995-09-14 | 1996-09-11 | Aqueous deodorant emulsion, use thereof and method for converting an aqueous emulsion into a gas phase |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9510766A FR2738747B1 (fr) | 1995-09-14 | 1995-09-14 | Emulsion aqueuse desodorisante , utilisation d'une emulsion aqueuse et procede de mise en phase gazeuse d'une emulsion aqueuse |
FR95/10766 | 1995-09-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997010008A1 true WO1997010008A1 (fr) | 1997-03-20 |
Family
ID=9482531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1996/001390 WO1997010008A1 (fr) | 1995-09-14 | 1996-09-11 | Emulsion aqueuse desodorisante, utilisation d'une emulsion aqueuse et procede de mise en phase gazeuse d'une emulsion aqueuse |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPH11512308A (fr) |
AU (1) | AU6991496A (fr) |
FR (1) | FR2738747B1 (fr) |
TW (1) | TW381030B (fr) |
WO (1) | WO1997010008A1 (fr) |
ZA (1) | ZA967671B (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6528047B2 (en) * | 2001-04-18 | 2003-03-04 | Goldschmidt Chemical Corporation | Odor absorption and deodorization |
DE102008010774A1 (de) | 2007-12-21 | 2009-06-25 | Cam-D Technologies Gmbh | Grenzflächenaktive Metallkomplexe zur Adsorption von Schadstoffen sowie Verfahren zu ihrer Herstellung |
DE102008010775A1 (de) * | 2007-12-21 | 2009-06-25 | Cam-D Technologies Gmbh | Grenzflächenaktive Metallkomplexe auf Trägermaterialien zur Adsorption von Schadstoffen sowie Verfahren zur Herstellung der geträgerten Materialien |
FR3108034B1 (fr) | 2020-03-11 | 2022-09-09 | Hyteck | Composition deodorante |
KR102612839B1 (ko) * | 2021-02-25 | 2023-12-11 | 진태원 | 고성능 탈취력을 지닌 방향제 제조방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4172123A (en) * | 1968-07-19 | 1979-10-23 | Grillo-Werke Aktiengesellschaft | Deodorants for both cosmetic and commercial use |
DE3726636C1 (de) * | 1987-08-11 | 1988-10-06 | Grillo Werke Ag | Desodorantien und ihre Verwendung |
US5169438A (en) * | 1991-06-13 | 1992-12-08 | E. I. Du Pont De Nemours And Company | Aqueous ink jet inks containing cycloaliphatic diol pluggage inhibitors |
-
1995
- 1995-09-14 FR FR9510766A patent/FR2738747B1/fr not_active Expired - Fee Related
-
1996
- 1996-09-11 WO PCT/FR1996/001390 patent/WO1997010008A1/fr active Application Filing
- 1996-09-11 JP JP9511700A patent/JPH11512308A/ja active Pending
- 1996-09-11 AU AU69914/96A patent/AU6991496A/en not_active Abandoned
- 1996-09-11 ZA ZA967671A patent/ZA967671B/xx unknown
- 1996-09-13 TW TW085111174A patent/TW381030B/zh active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4172123A (en) * | 1968-07-19 | 1979-10-23 | Grillo-Werke Aktiengesellschaft | Deodorants for both cosmetic and commercial use |
DE3726636C1 (de) * | 1987-08-11 | 1988-10-06 | Grillo Werke Ag | Desodorantien und ihre Verwendung |
US5169438A (en) * | 1991-06-13 | 1992-12-08 | E. I. Du Pont De Nemours And Company | Aqueous ink jet inks containing cycloaliphatic diol pluggage inhibitors |
Also Published As
Publication number | Publication date |
---|---|
ZA967671B (en) | 1997-03-26 |
JPH11512308A (ja) | 1999-10-26 |
AU6991496A (en) | 1997-04-01 |
TW381030B (en) | 2000-02-01 |
FR2738747A1 (fr) | 1997-03-21 |
FR2738747B1 (fr) | 1997-12-05 |
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