JP2013233542A - Method for decreasing particle in air - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for decreasing fine particles in air.SOLUTION: A method includes spraying, in air, a composition comprising an effective amount of a zwitterionic polymer, a compressed gas propellant and an aqueous carrier. When coming into contact with fine particles in air, the composition flocculates the fine particles and thereby fine particles in air are decreased. The composition further contains a buffer agent and a perfume component.

Description

  The present invention relates to a sprayable composition for reducing particles in the air.

  Particles are thought to have a significant impact on air quality and human health, especially those who are vulnerable to allergies. The particles include household pollutants, dust particles, silica, cotton dust, particles containing allergens such as pet dander and house dust mites. The particles in the air are generally about 0.1 μm to 50 μm in size.

  Products that reduce particles are well known and described in the patent literature. Many products use filtration and / or ionization techniques to reduce particles in the air. Such techniques can be more costly or cumbersome to use than sprayable products to control particles. Such sprayable products are described in the patent literature and typically include ingredients that assist in providing a barrier to sediment particles from air or to cover particles that have descended to the surface. However, such sprayable products may appear ineffective for removing particles.

  For example, the sedimentation component can mechanically push the particles against the surface, but as the air moves, the settled small and light particles can quickly recirculate into the air. If the product contains a dust control level barrier-forming component, sticky residues often form on the surface. In some instances, this sticky residue can attract more dust.

  For this reason, there remains a need for sprayable products that reduce airborne particles without leaving a sticky residue.

  The present invention relates to a sprayable composition for reducing airborne particles. In one embodiment, the composition comprises an effective amount of a zwitterionic polymer, a propellant comprising a compressed gas, and an aqueous carrier, wherein the composition is in contact with particles in the air. Agglomerates particles in the air.

  In another embodiment, the composition comprises from about 0.001% to about 0.2% by weight of the composition of a zwitterionic polymer and an aqueous carrier, and the composition is contained in a spray dispenser. The composition has an average particle size of about 20 μm to about 60 μm when sprayed from the dispenser, and the composition agglomerates the particles in the air when the composition comes into contact with the particles in the air.

  In yet another embodiment, a composition for reducing particulates in the air comprises an effective amount of a zwitterionic polymer and greater than about 50% by weight of the perfume mixture of Group 3 and Group 4 perfume ingredients. A perfume mixture comprising, about 1% to about 3% surfactant, and an aqueous carrier, wherein the composition is contained in a PET spray dispenser and the composition is in contact with particles in the air. Agglomerates particles in the air.

While the specification concludes with claims that particularly point out and distinctly claim the invention, it is believed the present invention will be better understood with the following description taken in conjunction with the accompanying drawings.
FIG. 5 is a graph showing the dust reduction profile of a composition comprising a small amount of zwitterionic polymer according to the present invention compared to a composition having a higher concentration of zwitterionic polymer.

  The present invention relates to a sprayable composition for reducing airborne particles.

  “Aqueous composition” as used herein means water and a solvent having a water solubility of 5% or more by weight. Non-limiting examples of aqueous carriers include deionized water, distilled water, tap water, ethanol, 2-propanol, glycerin, and propylene glycol n-butyl ether.

“Molecular weight” as used herein means the weight average molecular weight expressed in g / mol. The latter can be determined by aqueous gel permeation chromatography (“GPC”) or by measuring the intrinsic viscosity of a 1N NaNO ₃ solution at 30 ° C.

  The “sulfobetaine group” as used herein means a group containing an anionic group and a cationic group together with at least one group containing a sulfur atom.

  In certain embodiments, the composition includes a perfume that provides a consistent perfume release profile. A “consistent perfume release profile” is defined as the perceived fragrance intensity initially provided, and an equivalent intensity is maintained for at least 10 minutes (eg, 30 minutes or more).

  In other embodiments, the composition can also provide a true malodor removal effect without affecting the properties of the parent fragrance (ie, the perfume mixture without the malodor neutralizer). A “true malodor removal effect” is defined as an analytically measurable reduction in malodor. Thus, if the composition provides a true malodor removal effect, the composition does not function by simply using a perfume to mask or mask the odor.

  In some embodiments, the composition may be safe to the fabric so as not to contaminate the contacting fabric.

  The compositions herein are from about 0.1 cps to about 8 cps, alternatively from about 1 to about 6 cps, alternatively from about 1 to about 6 cps, or from about 1 It has a viscosity of 1 to about 4 cps, alternatively about 2.5 to about 4 cps, alternatively about 3.5 cps.

  The pH of the compositions herein may be from about 1 to about 10, alternatively from about 1 to about 8, alternatively from about 3 to about 8, alternatively from about 4 to about 8, alternatively from about 4 to about 7. Accordingly, the compositions herein may further comprise an acid or base to properly adjust the pH.

  Suitable acids for use herein are organic and / or inorganic acids. Preferred organic acids for use herein have a pKa of less than about 6. Suitable organic acids are selected from the group consisting of citric acid, lactic acid, glycolic acid, succinic acid, maleic acid, benzoic acid, glutaric acid, and adipic acid, and mixtures thereof. Suitable inorganic acids are selected from the group consisting of hydrochloric acid, sulfuric acid, phosphoric acid and mixtures thereof.

  Typical concentrations of such acids, when present, are from about 0.01% to about 5.0%, alternatively from about 0.01% to about 3.0%, alternatively from about 0% by weight of the composition. From 0.01% to about 1.5% by weight, alternatively about 0.1% by weight.

  There are numerous embodiments of the composition described herein, all of which are intended to be non-limiting examples.

Water-soluble or water-dispersed zwitterionic polymer The present composition comprises a water-soluble or water-dispersible aggregated zwitterionic polymer. The polymer is about 0.001% to about 1% by weight of the composition, alternatively about 0.001% to about 0.5%, alternatively about 0.001% to about 0.2%, alternatively about 0%. 0.001 wt% to about 0.1 wt%, alternatively about 0.001 wt% to about 0.05 wt%, alternatively about 0.001 wt% to about 0.2 wt%, alternatively about 0.01 wt% It is present at a concentration of about 0.1 wt%, alternatively about 0.01 wt% to about 0.05 wt%.

The zwitterionic polymer of the present invention is in the form of polymerized units,
(A) at least one monomer compound of the general formula I:

Where
R ₁ is a hydrogen atom, a methyl group or an ethyl group,
R ₂ , R ₃ , R ₄ , R ₅ , and R ₆ are the same or different and are linear or branched C ₁ -C ₆ , an alkyl group, a hydroxyalkyl group, or an aminoalkyl group,
m is an integer of 0 to 10,
n is an integer of 1 to 6,
Z represents a -C (O) O- or -C (O) NH- group or an oxygen atom;
A represents (CH _{2) p} group, p is an integer from 1 to 6,
B is linear or branched C ₂ -C ₁₂ optionally interrupted by one or more heteroatoms or heterogroups and optionally substituted by one or more hydroxyl or amino groups. Represents a polymethylene chain,
A monomer compound in which X is the same or different and represents a counter ion; and
(B) at least one hydrophilic monomer copolymerizable with (a) and supporting an acidic group ionizable in the application medium;
(C) optionally supporting at least one monomer compound having an ethylenically unsaturated moiety having a neutral charge copolymerizable with (a) and (b), or one or more hydrophilic groups (a ) And (b) and a hydrophilic monomer compound having an ethylenically unsaturated portion having a neutral charge which can be copolymerized.

  Monomer (a) is prepared, for example, according to the reaction scheme shown in US Pat. No. 6,569,261 assigned to Rhodia, 2 columns 40 lines to 3 columns 45 lines, incorporated herein by reference. be able to. The resulting polymer I has a molecular weight of at least 1000, alternatively at least 10,000, alternatively up to 20,000,000, alternatively up to 10,000,000. Alternatively, the polymer is a random polymer.

Alternatively, in the general formula I of monomer (a), Z represents C (O) O, C (O) NH or O, or C (O) NH, n is equal to 2 or 3, especially 3 M is in the range 0-2, or equal to 0 or 1, in particular 0, B represents -CH2-CH (OH)-(CH2) q, q is 1-4, or equal to 1, R ₁ to R ₆ is the same or different, represent a methyl group or an ethyl group.

  A preferred monomer (a) is a diquat of the formula

X ⁻ represents a chloride ion.

  Other suitable monomers (a) are

Where p = 2-4.

  The X anion is specifically a halogen or chlorine, sulfonate, sulfate, hydrogen sulfate, phosphate, phosphonate, citrate, formate, and acetate anions.

Monomer (b) may be a water and monoethylenically unsaturated portion soluble in the mixture, C ₃ -C ₈ carboxylic acids having the anhydrides and salts thereof, sulfonic acid, sulfuric acid, phosphonic acid, or phosphoric acid . Suitable monomers (b) are acrylic acid, methacrylic acid, α-ethacrylic acid, β, β-dimethylacrylic acid, methylenemalonic acid, vinyl acetic acid, allyl acetic acid, ethylidic acetic acid, propyridic acid, crotonic acid, maleic acid Fumaric acid, itaconic acid, citraconic acid, mesaconic acid, N- (methacryloyl) alanine, N- (acryloyl) hydroxyglycine, sulfopropyl acrylate, sulfoethyl acrylate, sulfoethyl methacrylate, styrene sulfonic acid, vinyl phosphonic acid, vinyl phosphonic acid , Phosphoethyl acrylate, phosphonoethyl acrylate, phosphopropyl acrylate, phosphonopropyl acrylate, phosphoethyl methacrylate, phosphonoethyl methacrylate, phosphopropyl methacrylate, phosphonopropyl Methacrylate, and alkali metal and ammonium salts thereof, and mixtures thereof.

Optionally the monomer (c) is of acrylamide, vinyl alcohol, C ₁ -C ₄ alkyl esters of acrylic acid and methacrylic acid, C ₁ -C ₄ hydroxyalkyl esters of acrylic and methacrylic acid, specifically, ethylene glycol and propylene glycol acrylate and methacrylate, Poriarukoshikiru esters of acrylic and methacrylic acid, specifically, polyethylene glycol and polypropylene glycol esters, esters C ₁ -C ₂₅ monoalkyl acrylic acid or methacrylic acid and polyethylene glycol or polypropylene glycol Examples include esters, vinyl acetate, vinyl pyrrolidone or methyl vinyl ether, and mixtures thereof.

  The level of monomer (a) is 3 to 80 mol%, alternatively 10 to 70 mol%. The level of monomer (b) is 10 to 95 mol%, alternatively 20 to 80 mol%. The level of monomer (c) is 0-50%, alternatively 0-30%. The molar ratio (a) / (b) of the cationic monomer to the anionic monomer is 80/20 to 5/95, alternatively 60/40 to 20/80.

  The polymers of the present invention can be obtained by known techniques for preparing polymers. One polymer is as follows.

Here, x has an average value of 0 to 50 mol%, alternatively 0 to 30 mol%, y has an average value of 10 to 95 mol%, alternatively 20 to 80 mol%, and z is 3 to 80 mol%. Or an average value of 10 to 70 mol%, the ratio y / z is about 4/1 to 1/2, x + y + z = 100%, and x, y, and z are acrylamide, acrylic acid ( Sodium salt), and mol% of units obtained from diquat.

  Other polymer chemical structures are as follows:

Here, x has an average value of 0 to 50 mol%, alternatively 0 to 30 mol%, y has an average value of 10 to 95 mol%, alternatively 20 to 80 mol%, and z is 3 to 80 mol%. Or an average value of 10 to 70 mol%, and the ratio y: z is about 4: 1 to 1: 2.

In the formula, x has an average value of 0 to 50 mol%, alternatively 0 to 30 mol%, y has an average value of 10 to 95 mol%, alternatively 20 to 80 mol%, and z is 3 to 80 mol%. Or an average value of 10 to 70 mol%, and the ratio y: z is about 4: 1 to 1: 2.

Here, x has an average value of 0 to 50%, alternatively 0 to 30 mol%, y has an average value of 10 to 95 mol%, alternatively 20 to 80 mol%, and z is 3 to 80 mol%. Or an average value of 10 to 70 mol%, and the ratio y: z is about 4: 1 to 1: 2.

In the formula, x has an average value of 0 to 50 mol%, alternatively 0 to 30 mol%, y has an average value of 10 to 95 mol%, alternatively 20 to 80 mol%, and z is 3 to 80 mol%. m, or having an average value of 10 to 70 mol%, and the ratio y: z is about 4: 1 to 1: 2.

In the formula, x has an average value of 0 to 50 mol%, alternatively 0 to 30 mol%, y has an average value of 10 to 95 mol%, alternatively 20 to 80 mol%, and z is 3 to 80 mol%. m, or having an average value of 10 to 70 mol%, and the ratio y: z is about 4: 1 to 1: 2.

In the formula, x has an average value of 0 to 50 mol%, alternatively 0 to 30 mol%, y has an average value of 10 to 95 mol%, alternatively 20 to 80 mol%, and z is 3 to 80 mol%. m, or having an average value of 10 to 70 mol%, and the ratio y: z is about 4: 1 to 1: 2.

  Suitable polymers are available from Rhodia.

Polybetaine Polymers Suitable zwitterionic polymers of the present invention can be polybetaine polymers. The polybetaine polymer may comprise zwitterionic units A or a mixture thereof, wherein unit A is a betaine group or mixture thereof characterized by the betaine group of unit A being a sulfobetaine group or a mixture thereof. including.

  In one embodiment, the polybetaine polymer is a homopolymer.

In another embodiment, the polybetaine polymer is a copolymer or a statistical copolymer. In some embodiments, the polybetaine copolymer comprises a mixture of units A. In yet another embodiment herein, the polybetaine copolymer comprises unit A or a mixture thereof and the following:
-Unit B is at least one hydrophilic monomer that supports an acidic functional group that is copolymerizable with unit A and ionizable in the application medium.
-Optionally, unit C is at least one monomeric compound having a neutral charge with an ethylenically unsaturated moiety copolymerizable with units A and B, or supports one or more hydrophilic groups. , A hydrophilic monomer compound having an ethylenically unsaturated portion having a neutral charge copolymerizable with the units A and B.

  In embodiments where the polybetaine polymer is a copolymer comprising units other than unit A, units A, B are destroyed by one or more nitrogen or sulfur atoms, optionally with other optional units. Forms highly likely polyalkylene hydrocarbon chains.

a. Unit A containing sulfobetaine group
The betaine group of unit A contains an anionic group and a cationic group together with at least one of the containing groups containing a sulfur atom. The anionic group may be a sulfur group such as a carbonate group or a sulfonate group, a phosphorus group such as a phosphate group, a phosphonate group or a phosphinate group, or an ethanolate group. The cationic group may be an onium or onium group from the nitrogen, phosphate or sulfur group, such as, for example, an ammonium group, pyridinium group, imidazolinium group, phosphonium group, sulfonium group. In one embodiment, the betaine group is a sulfobetaine group containing a sulfonate group and a quaternary ammonium group. The present invention encompasses copolymers containing a betaine group different from unit A in the copolymer.

  A betaine group is typically a pendant group of a polybetaine polymer, usually obtained herein from a monomer that usually contains at least one ethylenic unsaturation.

  In the core of unit A, the number of positive charges is equal to the number of negative charges. Unit A is electrically neutral within at least one pH range.

Useful betaine groups can be represented by the following formulas (i) to (iv) having a cationic charge at the center of the functional group and an anionic charge at the end of the functional group in the case of a cation from the nitrogen group.
-N ⁽⁺⁾ (R ¹ ) (R ² ) -R-AO ^(-) (i)
-(R ³ ) C = N ⁽⁺⁾ (R ⁴ ) -R-A-O ^(-) (ii)
^{- (R 3) (R)} C-N (+) (R 4) (R 5) -R-A-O (-) (iii)
-N ⁽⁺⁾ (= R ⁶ ) -R-AO ^(-) (iv)
Where
-R < ¹ >, R < ² > and R < ⁵ > are similar or different and represent an alkyl radical containing 1 to 7, alternatively 1 to 2 carbon atoms.
-R ³ and R ⁴ are different or similar, together with the nitrogen atom, optionally one or more other hetero atoms, and preferably represents a hydrocarbon radical to form a nitrogen heterocycle containing nitrogen.
—R ⁶ represents a hydrocarbon radical that, together with the nitrogen atom, optionally constitutes one or more other heteroatoms, or a saturated or unsaturated nitrogen heterocycle containing nitrogen.
-R represents a linear or branched alkylene radical containing 1 to 15, preferably 2 to 4 carbon atoms, optionally substituted by one or more hydroxy groups or benzylene radicals.
-A represents S (= O) (= O).

Useful betaine groups are represented by formula (v) in the case of cations from the phosphorus family.
-P ⁽⁺⁾ (R ¹ ) (R ² ) -RA-O ^(-) (v)
In the formula, R ¹ , R ² , R and A have the aforementioned definitions.

Useful betaine groups are represented by formulas (vi) and (vii) in the case of cations from the sulfur group.
-S ⁽⁺⁾ (R ¹ ) -R-AO ^(-) (vi)
^{-R-A '(- O (} -)) -R-S (+) (R 1) (R 2) (vii)
For formula (vi), where
-R ¹ and R have the above definitions.
-A is S (= O) (= O), OP (= O) (= O), OP (= O) (OR '), P (= O) (OR'), or P (= O) (R ′) is represented.
-R represents an alkyl radical containing 1 to 7 carbon atoms or a phenyl radical.
Alternatively, for formula (vii):
-R ¹ , R ² and R have the definitions given above.
-A 'represents -O-OP (= O) -O-.

  Betaine groups are mediated, ie often divalent or polyvalent hydrocarbon patterns (eg alkylene or arylene) cleaved by one or several heteroatoms, ie oxygen or nitrogen, ester patterns, amide patterns. Alternatively, or even by a valence link, it may be connected to a carbon atom of the macromolecular chain obtained from the polymerization of the ethylenically unsaturated part (backside, backbone) of the polymer.

  The polybetaine polymers herein include monomer A containing ethylenically unsaturated betaine groups, ie, an ethylenically unsaturated monomer containing at least one betaine group having the above formula, and optionally radicals of monomers B and C. It can be obtained by polymerization.

The monomer A is, for example,
-One or more mono-ethylenically unsaturated hydrocarbon groups or poly-ethylenically unsaturated hydrocarbon groups (ie vinyl, allyl, styrene, etc.),
One or more mono- or poly-ethylenically unsaturated ester radicals (ie acrylates, methacrylates, maleates, etc.) and / or one or more mono- or poly-ethylenically unsaturated amide radicals (ie acrylamide, Methacrylamide).

Unit A may be derived from at least one betaine monomer A selected from the group consisting of the following monomers:
-Alkyl sulfonates of diacrylammonium alkyl acrylates or methacrylates, acrylamides or methacrylamides, for example
-Sulfopropyldimethylammonium ethyl methacrylate marketed under the name SPE by RASCHIG:

-Sulfoethyldimethylammonium ethyl methacrylate and sulfobutyldimethylammonium ethyl methacrylate:

This synthesis is described in the paper “Sulfobetaine Zwitterionomers based on n-butyryl acrylate and 2-Ethoxyethyl acrylate 5: Simulatory and Phenol 23”.
-Sulfohydroxypropyldimethylammonium ethyl methacrylate:

-Sulfopropyldimethylammoniumpropylacrylamide:

This synthesis, the paper "Synthesis and solubility of the poly (sulfobetaine) s and the corresponding cationic polymers: 1.Synthesis and characterization of sulphobetaines and the corresponding cationic monomers by nuclear magnetic resonance spectra" Wen-Fu Lee and Chan-Chang Tsai, Polymer, 35 (10), 2210-2217 (1994);
-Sulfopropyldimethylammoniumpropyl methacrylamide sold under the name SPP by RASCHIG:

-Sulfopropyldimethylammonium ethyl methacrylate marketed under the name SPDA by RASCHIG:

-Sulfohydroxypropyldimethylammoniumpropylmethacrylamide:

-Sulfopropyl diethylammonium ethyl methacrylate:

This synthesis is described in the article “Poly (sulfopropylbetaines): 1. Synthesis and characteristics” M.M. Monroy Soto and J.M. C. Galin, Polymer, 1984, Vol 25, 121-128;
-Sulfohydroxypropyl diethylammonium ethyl methacrylate:

A heterocyclic betaine monomer, for example
-Sulfobetaine obtained from piperazine:

This synthesis is described in the article “Hydrophobically Modified Zwitterionic Polymers: Synthesis, Bulk Properties, and Miscibility with Organic Salts” P. Koverle and A.C. Laschewsky, Macromolecules 27, 2165-2173 (1994);
Sulfobetaines derived from 2-vinylpyridine and 4-vinylpyridine, for example 2-vinyl (3-sulfopropyl) pyridinium betaine (2SPV or “SPV”) marketed under the name SPV by RASCHIG:

-4-Vinyl (3-sulfopropyl) pyridinium betaine (4SPV), this synthesis is described in the article “Evidence of ionic aggregates in some acrylic polymers by transelectron microscopy” V. M.M. Castano and A.M. E. Gonzalez, J .; Cardoso, O .; Manero and V.M. M.M. Monroy, J. et al. Mater. Res. , 5 (3), 654-657 (1990);

-1-vinyl-3- (3-sulfopropyl) imidazolium betaine:

This synthesis is described in the paper “Aqueous solutions properties of a poly” (Vinyl imidazolium sulpho betaine), “J. C. Salamone, W.M. Volkson, A .; P. Oison, S.M. C. Israel, Polymer, 19, 1157 to 1162 (1978);
-Alkyl sulfonates of dialkyl ammonium alkyl allyl such as sulfopropylmethyl diallylammonium betaine:

This synthesis is described in the paper “New poly (carbobetaine) s made from zwitterionic dialylammonium monomers” Favresse, Phillippe, and 99, Laschesky, Andrere, Macroemolh, 88.
A styrene alkyl sulfonate of a dialkyl ammonium alkyl, for example:

This synthesis is described in the article “Hydrophobically Modified Zwitterionic Polymers: Synthesis, Bulk Properties, and Miscibility with Organic Salts” P. Koverle and A.C. Laschewsky, Macromolecules 27, 2165-2173 (1994);
-Betaines from dienes and ethylenically unsaturated anhydrides, for example:

This synthesis is described in the article “Hydrophobically Modified Zwitterionic Polymers: Synthesis, Bulk Properties, and Miscibility with Organic Salts” P. Koverle and A.C. Laschewsky, Macromolecules 27, 2165-2173 (1994);
-Betaines from cyclic acetals, preferably ((dicyanoethanolate) ethoxy) dimethylammoniumpropylmethacrylamide.

Poly betaine polymers according to the invention can also be obtained in known manner by making chemically modified polymers (copolymers), called precursor polymer containing A _precursor units, A _precursor units, a unit A betaine It is modified (botanize) by a post-polymerization reaction so as to become a base. Thus, the sulfobetaine units are preferably pendant amine functional groups by chemically modifying the precursor polymer units with sulfur electrophiles, preferably sultone (propane sultone, butane sultone) or halogenoalkyl sulfonates. Can be obtained by chemically modifying a polymer containing.

  The composition of the present invention may comprise a zwitterionic polymer having a net positive charge.

Buffering Agent The composition includes a buffering agent that prevents the zwitterionic polymer from interacting with other components in the composition. Without being bound by theory, it is believed that in the absence of a buffer, the zwitterionic polymer coagulates and separates from the aqueous phase.

  The buffering agent is about 0.01% to about 5.0%, alternatively about 0.01% to about 2.0%, alternatively about 0.01% to about 2.0%, alternatively about 0.01% to about It can be present in an amount of 0.2%, alternatively about 0.1.

  Suitable buffering agents herein are weak acids, organic salts and / or inorganic salts. In one embodiment, the organic salt is selected from monovalent, divalent, or trivalent salts, or mixtures thereof, such as sodium citrate, sodium chloride, sodium phosphate, potassium chloride, potassium phosphate. Is done.

Surfactant The composition of the present invention may comprise a surfactant. The surfactant is preferably greater than about 0.001% to about 10% by weight of the composition, alternatively about 0.5% to about 3, alternatively about 0.7% to about 3%, alternatively about It is present at a concentration of 1% to about 3%, alternatively about 1% to about 2%, alternatively greater than 1%. The exact concentration of surfactant in the composition depends on a number of factors such as surfactant type, class and chain length, polymer viscosity in the composition and surfactant contribution to the desired concentration.

  Suitable surfactants are those selected from the group consisting of nonionic surfactants, cationic surfactants, zwitterionic surfactants, amphoteric surfactants, and mixtures thereof. Examples of suitable surfactants are described in McCutcheon's Vol. 1: Emulsifiers and Detergents, North American Ed. McCutcheon Division, MC Publishing Co. , 2002.

In one embodiment, the composition includes a nonionic surfactant. Non-limiting examples of suitable nonionic surfactants include alcohol alkoxylates, alkyl polysaccharides, amine oxides, block copolymers of ethylene oxide and propylene oxide, castor oil derivatives, fluorosurfactants and silicon-based surfactants. Can be mentioned. Other non-ionic surfactants which can be used, can be mentioned those derived from natural sources such as sugars, include C ₈ -C ₁₆ N-alkyl glucose amide surfactants.

Fluorinated nonionic surfactants are also suitable for use in the present invention. One particularly preferred fluorinated nonionic surfactant is Fluorad F170 (3M Corporation, 3M Center, St. Paul, MN, USA). Fluorad F 170 has the formula _{C 8 F 17 SO 2 N (} CH 2 -CH 3) having a _{(CH 2 CH 2 O) x} . Silicon-based surfactants are also suitable for use in the present invention. One example of such a type of surfactant is Silwet L7604, available from Dow Chemical (1691 N. Sweed Road, Midland, Michigan, USA).

Solubilizers In some embodiments, the composition of the present invention can be added to the composition, any excess hydrophobic organic material that is not readily soluble in the composition, in particular any perfume material, And a solubilizing surfactant for solubilizing optional components (eg, pest repellents, antioxidants, etc.) may be formed to form a transparent solution. Suitable solubilizing surfactants are non-foaming or low-foaming surfactants. In a preferred embodiment, the freshening composition contains hydrogenated castor oil. One suitable hydrogenated castor oil that may be used in the compositions of the present invention is Basophor ™ available from BASF.

  Compositions containing anionic surfactants and / or detergent surfactants can produce chalk-like residues. In some embodiments, the composition of the present invention does not include an anionic surfactant and / or a detergent surfactant.

Wetting Agent In some embodiments, the composition of the present invention may include a wetting agent that provides a low surface tension that allows the composition to spread more easily and more uniformly. Aqueous compositions have been found not to spread well without such wetting agents. Spreading the composition allows the composition to dry quickly when the composition comes in contact with the surface.

Non-limiting examples of wetting agents include block copolymers of ethylene oxide and propylene oxide. Suitable block polyoxyethylene-polyoxypropylene polymer surfactants include those based on ethylene glycol, propylene glycol, glycerol, trimethylolpropane, and ethylenediamine as the initial reactive hydrogen compound. Polymeric compounds made by sequential ethoxylation and propoxylation of initial compounds with a single reactive hydrogen atom, such as C _12-18 aliphatic alcohols, generally have no affinity for cyclodextrins . BASF-Wyandotte Corp. Certain block polymer surfactant compounds, named Pluronic® and Tetronic® by (Wyandotte, Michigan) are readily available.

  Non-limiting examples of this type of wetting agent are described in US Pat. No. 5,714,137, which includes Silwet® surfactant available from Momentive Performance Chemical, Albany, New York. Agents. Representative Silwet surfactants are as follows.

And mixtures thereof.

Perfume component The composition of the present invention may comprise a perfume mixture having a perfume component. The perfume mixture may comprise from about 0.01% to about 10%, alternatively from about 0.01% to about 5%, alternatively from about 0.01% to about 3%, alternatively from about 0.01% by weight of the composition of the present invention. It is contained at 2.5% by weight.

  In some embodiments, the perfume ingredients have properties that provide a more consistent release profile to the composition. The perfume ingredients often have different volatility, boiling points, and aroma detection thresholds. When the fragrance is released into the air, the component with higher volatility (referred to as “top note”) volatilizes and the component with lower volatility (referred to as “middle note”) by human olfaction ) And the component with the lowest volatility (called the “bottom note”). This causes the perfume properties to change over time after the perfume is first released so that the overall perfume properties include fewer top notes and more bottom notes.

  In general, the properties and volatility of a perfume ingredient can be explained in terms of its boiling point (“BP”) and its octanol / water partition coefficient (or “P”). The boiling point referred to herein is measured under normal standard pressure, which is 0.10 MPa (760 mmHg). The boiling point of many perfume ingredients at the standard 0.10 MPa (760 mmHg) is described, for example, in “Perfume and Flavor Chemicals” (Aroma Chemicals), written by Steffen Arctander and published in 1969.

  The octanol / water partition coefficient of the perfume ingredient is the ratio of equilibrium concentrations in octanol and in water. The distribution coefficients of the perfume ingredients used in the air freshening composition can be more conveniently shown in the form of their logarithmic log P relative to the base 10. A number of perfume ingredient logPs have been reported so far, for example, Daylight Chemical Information Systems, Inc. See the Pomona 92 database available from (Daylight CIS) (Irvine, California). However, logP values are most conveniently calculated by the “CLOGP” program, also available from Daylight CIS. This program also lists experimental values for logP if they are available in the Pomona 92 database. The “logP calculated value” (ClogP) is determined by the Hansch and Leo fragment method (reference A. Leo, Comprehensive Medicinal Chemistry, Vol. 4, C. Hansch, P. G. Sammens, J. B. Taylor and C. A. Ramsden, p. 295, Pergamon Press, 1990). This fragment method is based on the chemical structure of each perfume ingredient and also takes into account the number and type of atoms, the connectivity of the atoms, and chemical bonds. The ClogP value is the most reliable and most widely used estimate for this physicochemical property, but is used in place of the experimental value for logP in selecting perfume ingredients for air freshening compositions. The

  The perfume mixture can comprise a perfume ingredient selected from one or more groups of ingredients. The first group of ingredients includes perfume ingredients having a boiling point of about 250 ° C. or less and a ClogP of about 3 or less. Alternatively, the first perfume component has a boiling point of 240 ° C. or lower, alternatively 235 ° C. or lower, or the first perfume component has a ClogP value of less than 3.0, or 2.5 or lower. One or more ingredients from the first group of perfume ingredients can be present in any suitable amount in the perfume mixture. In certain embodiments, the first perfume component is present at a concentration of at least 1.0% by weight of the perfume mixture, or at least 3.5% by weight of the perfume mixture, or at least 7.0% by weight.

  The second group of perfume ingredients includes a perfume ingredient having a boiling point of 250 ° C. or lower and a ClogP of 3.0 or higher, or the second perfume ingredient has a boiling point of 240 ° C. or lower, alternatively 235 ° C. or lower, or The second perfume ingredient has a ClogP value of greater than 3.0 or greater than 3.2. One or more ingredients from the second group of perfume ingredients can be present in any suitable amount in the perfume mixture. In certain embodiments, the second perfume ingredient is present at a concentration of at least 1.0% by weight of the perfume mixture, alternatively at least 3.5% by weight, alternatively at least 7.0% by weight of the perfume mixture.

  The third group of perfume ingredients includes a perfume ingredient having a boiling point of 250 ° C. or higher and a ClogP of 3.0 or lower, or the third perfume ingredient has a boiling point of 255 ° C. or higher, or 260 ° C. or higher. Alternatively, this additional perfume ingredient has a ClogP value of less than 3.0, alternatively 2.5 or less. One or more ingredients from the third group of perfume ingredients can be present in any suitable amount in the perfume mixture. In certain embodiments, the third perfume ingredient is present at a concentration of at least 10% by weight of the perfume mixture, alternatively at least 25%, alternatively greater than 40%, alternatively greater than 50% by weight of the perfume mixture.

  The fourth group of perfume ingredients includes a perfume ingredient having a boiling point of 250 ° C. or higher and a ClogP of 3.0 or higher, or this additional perfume ingredient has a boiling point of 255 ° C. or higher, alternatively 260 ° C. or higher, Alternatively, this additional perfume ingredient has a ClogP value greater than 3.0, or even greater than 3.2. One or more ingredients from the fourth group of perfume ingredients can be present in any suitable amount in the perfume mixture. In certain embodiments, the fourth perfume ingredient is present at a concentration of at least 10% by weight of the perfume mixture, alternatively at least 25%, alternatively greater than 40%, alternatively greater than 50% by weight of the perfume mixture.

  Table 1 shows that B.C. Some non-limiting examples of Group 3 and Group 4 perfume ingredients having P (boiling point) are provided.

¹ “MP” is the melting point (° C.), and these components have a B.P. P. Have

  The perfume mixture may also comprise any suitable combination of the aforementioned perfume groups. For example, in another embodiment, the perfume mixture comprises at least 50% perfume ingredients from groups 3 and 4 and the remaining perfume mixture is from the first group and / or the second group of perfume ingredients.

  A perfume mixture effective in an air freshening composition can utilize a relatively high concentration of specially selected perfume ingredients. Such high concentrations of perfume have not been used before due to a phenomenon known as the Odor Detection Threshold ("ODT"). The perfume ingredient generates an olfactory reaction of a person who smells the perfume. ODT is the lowest concentration of perfume ingredients that are always recognized and cause a human olfactory response. As the concentration of the fragrance increases, the odor intensity of the fragrance and the human olfactory response also increase. This continues until the perfume concentration reaches a maximum, at which point the odor intensity reaches a plateau where no further human olfactory response occurs. This range of perfume concentration at which a person always recognizes odor is known as the odor detection range ("ODR").

  Since higher concentration compositions do not provide an additional olfactory response and are therefore costly and inefficient, the concentration of the perfume component in the perfume mixture must be formulated within the ODR of the perfume component .

  However, in some situations it may be desirable to exceed the ODR of at least some perfume ingredients. The perfume is not only spillable and highly noticeable when the product is used in an aqueous aerosol or pump spray, but the perfume continues to diffuse from numerous droplets scattered across all surfaces in the room. The perfume reservoir serves to replace the diffused perfume, so that the perfume concentration in the room is increased throughout the use, or after first being sprayed or otherwise dispersed, to the perfume ODT or higher. maintain. Furthermore, it has been found that perfume tends to stay longer in the room in which the composition is used. Thus, in one embodiment, alternatively, at least one perfume ingredient selected from the first and / or second perfume ingredients is present at a concentration that exceeds 50% of the ODR, or a concentration that exceeds 150% of the ODR. For perfumes that stay very long, at least one perfume ingredient can be added at a concentration in excess of 300% of the ODR.

  In certain embodiments, the perfume mixtures described herein can maintain more consistent properties over time. A larger droplet size (having a smaller total surface area compared to multiple smaller droplets) can be used to slow down the rate at which a highly volatile top note volatilizes. The droplets can not only release the perfume mixture when suspended in the air, but can also fall until they come into contact with a surface (eg, a table or worktop, furniture, floor, carpet, etc.). The droplets falling on these surfaces act as a “reservoir” for the perfume mixture and can release the perfume mixture after falling to such a surface. In this way, the scent initially recognized by the consumer can be continuously updated, which is replenished by molecules released from the droplet over a period of time. The mixing action of newly released, newer, more volatile and lower ODT materials and heavier ODT molecules (eg bottom notes such as musk, woody notes, etc.) is consumed when the product is first applied Provide consumers with a scent that reminds them of the scent they first experienced.

  The malodor detection threshold can be measured using a commercially available gas chromatograph (“GC”) equipped with a flame ionization detector and sniffer. The gas chromatograph is calibrated to determine the hydrocarbon reaction using the exact volume of material injected with the syringe, the precise split ratio, and hydrocarbon standards of known concentration and chain length distribution. The sample volume is calculated by accurately measuring the air flow rate and assuming that the duration of human inhalation is 12 seconds. Since the exact concentration in the detector at any point in time is known, the mass per inhaled volume is also known and the concentration of the substance can be calculated. In order to determine if the substance has a threshold value of less than 50 ppb, a back-calculated concentration of solution is delivered to the sniffer. The retention time when the sensory tester sniffs the GC eluate and senses the odor is identified. The threshold of sensitivity is determined from the average of all sensory testers.

  The required amount of analyte is injected into the column to bring the concentration at the detector to 50 ppb. Typical gas chromatographic parameters for determining the odor detection threshold are listed below. The test is performed in accordance with the equipment guidelines.

machine:
GC: 5890 series with FID detector (Agilent Technologies, Ind., Palo Alto, California, USA)
7673 Autosampler (Agilent Technologies, Ind., Palo Alto, California, USA)
Column: DB-1 (Agilent Technologies, Ind., Palo Alto, California, USA)
30 meters long, ID 0.25 mm, film thickness 1 micrometer (polymer layer on the inner wall of the capillary tube, providing selective splitting for separation)

Method parameters:
Split injection: split ratio 17/1
Autosampler: 1.13 microliters per injection Column flow: 1.10 mL / min Air flow: 345 mL / min Inlet temperature 245 ° C
Detector temperature 285 ° C
Temperature information Initial temperature 50 ℃
Speed: 5 ° C / min Final temperature: 280 ° C
Final time: 6 minutes Guidance assumption: (i) 12 seconds per sniff
(Ii) Add GC air to the sample diluent.

  In perfume technology, some auxiliary materials that are free of malodor or low in malodor are used, for example as solvents, diluents, extenders or fixatives. Non-limiting examples of these materials are ethyl alcohol, carbitol, diethylene glycol, dipropylene glycol, diethyl phthalate, triethyl citrate, isopropyl myristate, and benzyl benzoate. These materials are used, for example, to solubilize or dilute any solid or sticky perfume ingredients, for example to improve operability and / or compoundability. These materials are useful in perfume mixtures, but are not included in the calculation of perfume mixture definitions / formulation restrictions used herein.

  In the perfume mixtures described herein, it may be desirable to use perfume ingredients having low ODT values and even other ingredients in small amounts as an alternative. The odorant ODT is the lowest vapor concentration of the detectable substance. For the ODT and some ODT values, see, for example, “Standardized Human Office Thresholds” M.M. Devos et al., IRL Press at Oxford University Press, 1990 and “Compilation of Order and Test Threshold Values Data” F.M. A. Fuzzalari, edited by ASTM Data Series DS 48A, American Society for Testing and Materials, 1978. By using a small amount of perfume ingredients having a low ODT value, the perfume properties can be improved, such as by “rounding” the aroma by adding complexity to the perfume properties. Examples of perfume ingredients having low ODT values useful in perfume mixtures include coumarin, vanillin, ethyl vanillin, methyl dihydroisojasmonate, 3-hexenyl salicylate, isoeugenol, lyral, γ-undeca Examples include, but are not limited to, lactones, γ-dodecalactone, methyl β-naphthyl ketone, and mixtures thereof. These materials can be present at any suitable level. In some embodiments, these materials may be present in low concentrations in the perfume mixture, typically less than 5%, alternatively less than 3%, alternatively less than 2% by weight of the perfume mixture.

Malodor Neutralizer The composition may also include a malodor neutralizer that provides a true malodor removal effect. A true malodor removal effect is defined as a malodor reduction that can be measured both sensorially and analytically (eg, by gas chromatograph). Thus, if the composition provides a true malodor removal effect, the composition can neutralize or prevent malodor as opposed to simply concealing malodor.

  One type of composition utilizes malodor neutralization by gas phase technology. Gas phase technology is defined as a malodor neutralizer that mitigates malodor in the air by chemical reaction or neutralization. Alternatively, malodor neutralizers are safe for fabrics.

  In one embodiment of the composition utilizing gas phase technology, the composition comprises a safe aliphatic aldehyde and / or one or more enones (ketones with unsaturated double bonds) on one or more fabrics. Including. It may also be desirable that these gas phase techniques do not substantially adversely affect the desired perfume properties. Certain malodor technologies have an odor and adversely affect the overall properties of the fragrance. In this case, the perfume / odour neutralizer premix is formed so that the perfume raw materials used in this technique are selected so that any odor of the malodor neutralizer is neutralized. Subsequently, this premix neutralized odor can be added to the fragrance without affecting the properties of the fragrance. This allows the gas phase technology to be widely used with a wide variety of types of fragrances. Furthermore, unlike products that use aldehydes of the type that contain multiple double bonds and benzene rings, gas phase technology of the type that mainly contains a straight aliphatic skeleton chain does not discolor the fabric.

  The malodor neutralizing agent utilizing gas phase technology can be present in any suitable amount in the perfume mixture. In certain embodiments, the malodor neutralizer may be present in an amount greater than or equal to about 1% and less than about 50% by weight of the perfume mixture of the composition. In other embodiments, the malodor neutralizer may be present at greater than or equal to about 3% and less than about 30% by weight of the perfume mixture of the composition. In other embodiments, the malodor neutralizer may be present in an amount greater than or equal to about 8% and less than about 15% by weight of the perfume mixture.

  The table below shows the importance of proper selection of aldehydes and enones to prevent fabric yellowing.

An example of a suitable aliphatic aldehyde is R—COH, where R is a saturated C ₇ -C ₂₂ linear and / or branched chain having no more than two double bonds. Additional examples of aliphatic aldehydes include lyral, methyldihydrojasmonate, ligustral, melonal, octylaldehyde, citral, thymar, nonylaldehyde, vojunal, P.I. T. T. et al. Bucinal, decyl aldehyde, lauryl aldehyde, and mixtures thereof. Examples of suitable enones are ionone α, ionone β, ionone γ methyl, and mixtures thereof. The malodor neutralizer can include one or more aliphatic aldehydes, one or more enones, or any combination thereof. The following are some non-limiting examples of perfume formulations containing a gas phase malodor neutralizer that is safe for fabrics.

  In many of the above examples, the composition comprises a mixture of ionone and a reactive aldehyde. Aldehydes react with amine odors (such as fish and tobacco odors).

  Another type of malodor neutralizer includes cyclodextrin and / or ionone to neutralize malodor when the composition is a mist floating in the air. Ionone reacts with amines. Cyclodextrins form complexes with various organic molecules, reducing their volatility. In some embodiments, the composition of the present invention may comprise a solubilized water soluble uncomplexed cyclodextrin. Cyclodextrin molecules are described in US Pat. Nos. 5,714,137 and 5,942,217. Suitable concentrations of cyclodextrin are from about 0.01% to about 3% by weight of the composition, alternatively from about 0.01% to about 2%, alternatively from about 0.05% to about 1%, or alternatively About 0.05 wt% to about 0.5 wt%.

  Other types of compositions work by modifying the sensation of people exposed to odors. There are at least two ways to correct smell perception. One method (accustomed) is to cover the odor with a fragrance so that a person exposed to the odor will smell more of the fragrance than the odor. Another method (no olfaction) is to reduce the susceptibility of a person to malodor. Ionone is a composition that can reduce the sensitivity of the human olfactory system to the presence of certain unpleasant odors such as sulfur odors caused by eggs, onions, garlic, and the like.

  The composition can utilize one or more types of malodor control mechanisms and components as described above (eg, hydrophilic odor traps, gas phase techniques, and odor blockers (sensory modifiers)).

Other optional ingredients Other optional ingredients include solvents, alcohols (eg, ethanol), preservatives, antimicrobial compounds, and other quality control ingredients. In certain embodiments, the perfume ingredients and malodor neutralizer comprise from about 0.01% to about 5% by weight of the composition, or any other range within this range. In embodiments where the perfume and optional malodor neutralizing component are diluted, one non-limiting example of such a narrow range is from about 0.05% to about 2% of the composition. In other embodiments, one or more fabric-safe aldehydes and / or more fabric-safe ionones are included at about 25% or less by weight of the composition.

Propellant The composition may include a propellant to assist in spraying the composition into the air. The composition may include a propellant that is primarily a non-hydrocarbon propellant (ie, a propellant comprising a non-hydrocarbon propellant that is greater in volume than a hydrocarbon propellant, ie, greater than or equal to about 50% by volume of the propellant. Agent). In some embodiments, the propellant may be substantially free of hydrocarbons such as isobutene, butane, isopropane, and dimethyl ether. In other embodiments, the propellant may be a hydrocarbon. In embodiments where the composition uses a non-hydrocarbon propellant, such a propellant may include a compressed gas. Some compressed gases may be more environmentally friendly than hydrocarbon propellants, which makes them more suitable for dust reducing compositions that further freshen the air. Suitable compressed gases include, but are not limited to, compressed air, nitrogen, nitrous oxide, inert gases, carbon dioxide, and the like, and mixtures thereof.

  A suitable amount of propellant in the composition is from about 20% to about 80%, alternatively from about 30% to about 60%, alternatively from about 30% to about 50% by weight of the composition.

Spray dispenser The composition may be packaged in any suitable spray dispenser known in the art. One suitable dispenser is a plastic aerosol nebulizer. The dispenser may be composed of polyethylene such as high density polyethylene, polypropylene, polyethylene terephthalate (“PET”), vinyl acetate, rubber elastics, and combinations thereof. In one embodiment, the spray dispenser is made of clear PET.

  The spray dispenser may hold about 1 to about 300 grams of composition, alternatively about 275 grams, alternatively about 250 grams, alternatively about 150 grams of composition.

  The spray dispenser can be from about 0.34 MPa to about 0.97 MPa (about 50 psig to about 140 psig), alternatively from about 0.55 to about 0.89 MPa (about 80 to about 130 psi). Can withstand internal pressures in the range of.

  Compressed gas systems can produce particles that are larger than hydrocarbons and provide superior particle reduction and a more desirable perfume release profile, but these same particles are heavier and fall to the ground, so floors and other surfaces Can be moistened. In one embodiment of the present invention, the total composition calculated amount and spray droplet / particle size distribution are selected to support the particle removal effect but prevent surface wetting problems. The total calculated amount is determined by the flow rate of the composition released from the spray dispenser. To achieve a spray profile that produces minimal surface wetting, it is desirable to have small spray droplets at low flow rates. The flow rate may be less than 1.2 grams / second, the droplets will be small enough that less than 40% of the droplets will fall on the ground when dispensed at a height of 1.52 m (5 feet) from the ground. drop down.

  Although the flow rate can be reduced by valves, conduits and / or nozzles, nozzle improvements have been found to be less susceptible to clogging. The flow rate is determined by measuring the rate of composition released by the filled container during the first 60 seconds of use. In one embodiment, the flow rate of the composition released from the spray dispenser is from about 0.0001 grams / second to about 2.0 grams / second. Alternatively, the flow rate is from about 0.001 grams / second to about 1.5 grams / second, alternatively from about 0.01 grams / second to about 1.5 grams / second, alternatively from about 0.01 grams / second to about 1. 3 grams / second, alternatively about 0.5 grams / second to about 1.3 grams / second, alternatively about 0.7 grams / second to about 1.3 grams / second. In an alternative embodiment, the flow rate is from about 0.8 grams / second to about 1.3 grams / second.

  Small particles can be made efficiently when the spray is dispensed with a wide cone angle. For a given nozzle component and conduit, the cone angle can be modified by changing the insertion depth of the nozzle in the conduit. In one embodiment, the cone angle is greater than about 20 degrees, alternatively greater than about 30 degrees, alternatively greater than about 35 degrees, alternatively greater than about 40 degrees, alternatively greater than about 50 degrees. The average particle size of the spray droplets may be from about 10 μm to about 100 μm, alternatively from about 20 μm to about 60 μm. In one type of such embodiment, at least some of the spray droplets are of a size small enough to float in air for at least about 10 minutes, optionally at least about 15 minutes or at least about 30 minutes. is there.

  In one embodiment, the aerosol dispenser may be configured to spray the composition at an angle between an angle parallel to the bottom of the container and an angle perpendicular to the bottom of the container. In other embodiments, the desired size of spray droplets can be delivered by other types of devices that can be set to provide a narrow range of droplet sizes. Other such devices include, but are not limited to, foggers, ultrasonic atomizers, electrostatic atomizers, and rotating disk atomizers.

  In order to reduce particles in the air, in one embodiment, the time for the composition to contact the particles is less than about 30 seconds.

  The composition can be made by any suitable method known in the art. All ingredients can simply be mixed together. In certain embodiments, the acidic component is combined with a solvent prior to adding the zwitterionic polymer. In another embodiment, it may be desirable to use a mixture of components as a concentrated product (and also dispense such concentrated product, such as by spraying). In other embodiments, the mixture of components can be diluted by adding the mixture of components to any suitable carrier, and the composition can be dispensed as well.

  The following are non-limiting examples of compositions for reducing particles according to the present invention and methods for measuring particle reduction of compositions according to the present invention.

  Example formula

Dust Particle Reduction Test To determine the profile of suspended dust particles when treated with a composition according to the present invention, the following test design consisting of:
・ Volume (99.7cmW x 63.5cmD x 54.6cmH (39.25 "W x 25" D x 21.5 "H)) equipped with 10cm (4 inch) 314.9L / min (110cfm) fan Of sealed environmental chamber 345.5L (12.2 cubic feet).
Introduce two additional fans at 11.9 cm x 11.9 cm x 3.8 cm at 2548.5 L / min (90 cfm) to increase airflow.
A sample probe placed in a chamber connected by tubing that reduces static electricity and particle adhesion.
A Solair ™ 3100 laser particle counter is used.
-Dust particles of known composition and particle size distribution.

  All available channels must be selected on the particle counter for testing. If necessary, the timing control must be adjusted within the limits of the particle counter. In order to deplete the required test volume, a known amount of dust particles is introduced into the environmental chamber over time as needed. Continue sampling until the desired equilibrium is reached. If aerosol treatment is required, the product is sprayed into the chamber and sampling continues until the relevant time is reached.

  Using the above test design, compositions according to the present invention (ie, Samples 1 and 2 as outlined below) were sampled for the effect of reducing dust particles in the air.

  The results are shown in Table 3 and plotted in FIG. It can be seen that the composition according to the invention effectively reduces dust compared to the control. Furthermore, it can be seen that the sample with 0.05 wt% zwitterionic polymer is more effective in reducing dust particles than the sample with higher concentration of zwitterionic polymer. Without being bound by theory, it is believed that the higher the zwitterionic polymer concentration, the higher the viscosity of the aqueous composition. This in turn hinders the spray characteristics achievable within the compressed gas system. The properties obtained have a significant effect on the effect of liquid-vapor contact, which reduces the effectiveness of the composition to agglomerate dust particles in the air.

Dust Absorption and Agglomeration Test A test was conducted comparing the penetration time and agglomeration effect of various compositions. A known amount of solution was placed in a plastic clear cup. All samples to be compared must use an equal amount of solution. Disperse powder particles of known amount and composition on the surface of the solution. The penetration time is reported as the length of time that the particles break through the surface of the liquid. The absorption time is reported as the length of time for all particles to move from the surface of the liquid to the solution, i.e., the time that there is no particles on the outer surface of the liquid. Aggregation percentage is measured by visual assessment of powdered particles that combine to form large amounts of larger particles, comparing to a visual standard on a 0-100 scale.

  Table 4 shows that compositions with zwitterionic polymers performed better than other compositions for reducing particles in penetration time and particle agglomeration in air.

  The disclosures of all patents, patent applications (and any patents issued therewith, and any foreign patent applications issued in connection therewith), and publications described throughout this specification are also incorporated herein by reference. Incorporated in the description. It may be evident, however, that no document incorporated by reference herein is recognized as teaching or disclosing the present invention.

  Throughout this specification, components referred to in the singular should be understood to refer to both the component or components in question.

  All percentages described herein are by weight unless otherwise specified.

  Any maximum numerical limitation set forth throughout this specification should include any lower numerical limitation as if such lower numerical limitation was expressly set forth herein. Should be understood. The minimum numerical limits set forth throughout this specification include all higher numerical limits as if such large numerical limits were expressly set forth herein. The numerical ranges set forth throughout this specification are intended to include any numerical range narrower than that falling within such broader numerical ranges, and all such narrower numerical ranges being explicitly set forth herein. Including.

  The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Rather, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as “40 mm” is intended to mean “about 40 mm”.

  All documents cited in this application, including all patents or patent applications that are cross-referenced or related, are hereby incorporated by reference in their entirety, unless expressly stated to be excluded or limited. Citation of any document is not an admission that such document is prior art to all inventions disclosed or claimed in this application, and such document alone or in all other references. And no reference to, teaching, suggestion, or disclosure of any such invention in any combination thereof. Further, in this document, if any meaning or definition of a term conflicts with any meaning or definition of the same term in the incorporated reference, the meaning or definition given to the term in this document takes precedence. It shall be.

  While particular embodiments of the subject invention have been described, it will be apparent to those skilled in the art that various changes and modifications can be made to the subject invention without departing from the spirit and scope of the invention. Furthermore, while the invention has been described in connection with certain specific embodiments, this is for purposes of illustration and not limitation, and the scope of the invention is defined by the appended claims. It is to be understood that the claims are to be interpreted as broadly as the prior art allows.

Claims (15)

A method of reducing particles in the air comprising spraying the composition into the air, the composition comprising:
I) An effective amount of a zwitterionic polymer, wherein the zwitterionic polymer is
a) at least one monomeric compound of general formula I comprising
Where
R ₁ is a hydrogen atom, a methyl group or an ethyl group,
R ₂ , R ₃ , R ₄ , R ₅ , and R ₆ are the same or different and are linear or branched C ₁ -C ₆ , an alkyl group, a hydroxyalkyl group, or an aminoalkyl group,
m is an integer of 0 to 10,
n is an integer of 1 to 6;
Z is a —C (O) O— or —C (O) NH— group or an oxygen atom;
A represents a (CH _{2) p} group, p is an integer of 1 to 6,
B is one or optionally interrupted by more hetero atoms or hetero groups, one or more linear substituted optionally by a hydroxyl group or an amino group or a branched C ₂ -C ₁₂ Represents a polymethylene chain,
A monomer compound in which X is the same or different and represents a counter ion; and
b) at least one hydrophilic monomer copolymerizable with (a) and supporting acidic groups ionizable in the application medium;
c) at least one monomeric compound having an ethylenically unsaturated moiety with a neutral charge optionally copolymerizable with (a) and (b), and a zwitterionic polymer,
II) a propellant comprising a compressed gas selected from the group consisting of compressed air, nitrogen, nitrous oxide, inert gas, carbon dioxide and mixtures thereof;
III) an aqueous carrier,
A method wherein the polymer agglomerates particles in the air when the composition comes into contact with the particles in the air. The monomer (a) is
Z represents —C (O) O—, —C (O) NH—, or an O atom;
n is equal to 2 or 3,
m is in the range of 0-2;
B is, -CH2-CH (OH) - (CH 2) represents a q, q is from 1 to 4,
The method according to claim 1, wherein R _{1 to} R ₆ are the same or different and are monomers representing a methyl group or an ethyl group.   The polymer comprises the monomer (c), preferably the monomer (c) supports one or more hydrophilic groups and is neutrally copolymerizable with the monomers (a) and (b) The method according to claim 1, which is a hydrophilic monomer compound having an ethylenically unsaturated moiety. The method according to claim 1, wherein the monomer (b) is a C _{3 to} C ₈ carboxylic acid, sulfonic acid, sulfuric acid, phosphonic acid, or phosphoric acid having a monoethylenically unsaturated portion.   The method of claim 1, wherein the polymer comprises 3-80 mol% of the monomer (a), 10-95 mol% of the monomer (b), and 0-50 mol% of the monomer (c).   The process according to claim 1, wherein the monomers (a) and (b) have a total weight molar ratio of the monomers (a) and (b) of 80/20 to 5/95. The polymer is
And x has an average value of 0 to 50 mol%, y has an average value of 10 to 95 mol%, z has an average value of 3 to 80 mol%, and x, y and z The process according to claim 1, wherein each represents mol% of units obtained from acrylamide, acrylic acid (sodium salt) and diquat.   The zwitterionic polymer is present from 0.001% to 0.2% by weight of the composition, preferably from 0.01% to 0.05% by weight of the composition. The method according to 1.   The method of claim 1, wherein the composition further comprises a buffer.   The method of claim 1, wherein the composition further comprises a surfactant selected from the group consisting of nonionic surfactants, zwitterionic surfactants, amphoteric surfactants, and mixtures thereof. .   The method of claim 1, wherein the composition further comprises a perfume ingredient.   The method of claim 1, wherein the composition is provided in a plastic container.   The method of claim 1, wherein the composition has a viscosity of 0.1 to 6 cps.   The method of claim 1, wherein the composition has a pH of 3-7.   Further comprising a malodor neutralizing agent, preferably a malodour neutralizing agent comprising at least one of cyclodextrin, monoacrylic acid, diacrylic acid, carboxylic acid including triacrylic acid and polyacrylic acid, and mixtures thereof; The method of claim 1.