Aerosol dispenser and nozzle

Abstract

A spray dispenser includes a container, a valve body, a valve stem, a supply channel, an actuator, and a nozzle. The container, the valve stem, the supply passage, and the nozzle are in fluid communication. The valve stem is movable from a closed position in which the valve stem passage is not in fluid communication with the interior of the container to a fully open position in which the valve stem passage is in fluid communication with the interior of the container. The actuator is in operative communication with the valve stem wherein the actuator is movable from a rest position wherein the valve stem is in the closed position to a fully actuated position wherein the valve stem is in the fully open position and wherein the valve stem is in the fully open position. The nozzle includes a swirl chamber adjacent the end face and having a chamber depth CH extending along a nozzle longitudinal axis NL and a chamber diameter CD, and wherein the swirl chamber is disposed substantially concentrically with the cavity and is in fluid communication with the groove wherein the chamber diameter CD is less than or equal to 800 microns and the chamber depth CH is less than or equal to 500 microns.

Description

Technical Field

[0001] The present disclosure relates to a nozzle for a spray dispenser and, more particularly, to a nozzle and spray dispenser for use with a compressed gas propellant. Background Art

[0002] Pressurized spray dispensers for dispensing compositions, such as liquid compositions, are known in the art. Some spray dispensers are pressurized with a compressed gas such as nitrogen or air. When dispensing a composition from a spray dispenser that uses a compressed gas as a propellant, the pressure in the container decreases, which in turn can affect the particle size and flow rate of the dispensed composition. The particle size and flow rate of the dispensed composition can also be affected by the dispensing system of the spray dispenser and / or the structure of the nozzle. A spray dispenser can include a container for holding the composition and the compressed gas propellant, a valve assembly in fluid communication with the container, a supply passage in fluid communication with the valve assembly, a nozzle in fluid communication with the supply passage, and an actuator operatively connected to the valve assembly. Various aspects of the valve assembly, supply passage, and / or nozzle can affect the particle size and flow rate. For example, a relatively long supply passage allows more composition to accumulate. When the valve assembly is adjusted from a fully open position where the composition is being dispensed to a closed position where the composition is no longer supplied from the container to the valve assembly, the composition in the supply passage and nozzle will continue to be dispensed from the nozzle until the pressure in the supply passage is too low to force the composition out of the nozzle. A change in the pressure in the supply passage when the last remaining composition from the supply passage is dispensed through the nozzle can result in larger particles, which may appear to the user as drips or larger droplets that are more likely to fall to the floor. This phenomenon can be undesirable for the user. Accordingly, it would be beneficial to provide a nozzle and spray dispenser that can maintain a uniform and relatively small particle size during a single spray duration using a compressed gas as a propellant. Summary of the Invention

[0003] "Combination:"

[0004] A. A spray dispenser, comprising: a container configured to hold a composition and a compressed gas propellant; a supply passage in fluid communication with the container; an actuator operatively connected to a valve manifold; and a nozzle in fluid communication with the supply passage and configured to atomize the composition, the nozzle comprising:

[0005] a substantially cup-shaped nozzle insert having an outer surface and a cavity extending along a nozzle longitudinal axis NL and an end face;

[0006] a plurality of generally radially extending grooves disposed on the end face;

[0007] A swirl chamber, which is adjacent to the end face and has a chamber depth CH extending along the nozzle longitudinal axis NL and a chamber diameter CD, and wherein the swirl chamber is arranged substantially concentrically with the cavity and is in fluid communication with the groove, where the chamber diameter CD is less than or equal to 800 micrometers and the chamber depth CH is less than or equal to 500 micrometers;

[0008] An outlet orifice, which has an orifice diameter OD and an orifice depth OH along the nozzle longitudinal axis NL, and is arranged substantially concentrically with the swirl chamber and is in fluid communication with the swirl chamber;

[0009] A nozzle body, which is used to receive and hold the nozzle insert, is in fluid communication with a supply channel for receiving the composition to be atomized and includes an insert support pillar having an end surface; and

[0010] A plurality of substantially radial vanes, which are substantially defined by the end surface and the groove, are in fluid communication with the supply channel and have a radial vane depth VH.

[0011] B. The spray dispenser according to paragraph A, wherein the container includes a liquid composition and a compressed gas propellant.

[0012] C. The spray dispenser according to paragraph B, wherein the composition is an air or fabric freshening composition.

[0013] D. The spray dispenser according to any one of paragraphs A to C, wherein the flow rate of the composition discharged from the nozzle is in the range of about 1.3 g / s to about 1.9 g / s.

[0014] E. The spray dispenser according to any one of paragraphs A to D, wherein the minimum Dv90 particle size is in the range of about 60 micrometers to about 90 micrometers.

[0015] F. The spray dispenser according to any one of paragraphs A to E, wherein the initial pressure in the container is less than 1100 kPa at 21°C.

[0016] G. The spray dispenser according to any one of paragraphs A to G, wherein the swirl chamber has a chamber diameter CD of 700 mm or less and a chamber depth CH of less than 400 micrometers.

[0017] H. The spray dispenser according to any one of paragraphs A to G, wherein the actuator is a button or a trigger.

[0018] I. The spray dispenser according to any one of paragraphs A to H, wherein the container, the valve body, the valve stem, the nozzle and the actuator are made of plastic.

[0019] J. A spray dispenser, comprising: a container configured to contain a composition and a compressed gas propellant; a supply channel in fluid communication with the container; an actuator operatively connected to a valve manifold; and a nozzle in fluid communication with the supply channel and configured to atomize the composition, the nozzle comprising:

[0020] A substantially cup-shaped nozzle insert having an outer surface, a cavity extending along a longitudinal axis L, and an end face;

[0021] A plurality of substantially radial grooves provided on the end face;

[0022] A vortex chamber adjacent to the end face and having a chamber depth CH and a chamber diameter CD along the longitudinal axis L of the nozzle, and wherein the vortex chamber is disposed substantially concentrically with the cavity and in fluid communication with the grooves, the vortex chamber defining a volume, and wherein the volume of the vortex chamber is 0.095 mm 3 to 0.135 mm 3 ;

[0023] An outlet orifice having an orifice diameter OD and an orifice depth OH along the longitudinal axis NL of the nozzle, and disposed substantially concentrically with the vortex chamber and in fluid communication with the vortex chamber;

[0024] A nozzle body for receiving and holding the nozzle insert, the nozzle body being in fluid communication with a supply channel for receiving the liquid to be atomized and including an insert support having an end surface; and

[0025] A plurality of substantially radial vanes substantially defined by the end surface and the grooves, the vanes being in fluid communication with the supply channel and having a depth VH.

[0026] K. The spray dispenser according to paragraph J, wherein the container includes a liquid composition and a compressed gas propellant.

[0027] L. The spray dispenser according to paragraph K, wherein the composition is an air or fabric freshening composition.

[0028] M. The spray dispenser according to any one of paragraphs J to L, wherein the flow rate of the composition discharged from the nozzle is in the range of about 1.3 g / s to about 1.9 g / s.

[0029] N. The spray dispenser according to any one of paragraphs J to M, wherein the minimum Dv90 particle size is in the range of about 60 microns to about 90 microns.

[0030] O. The spray dispenser according to any one of paragraphs J to N, wherein the initial pressure in the container is less than 1100 kPa at 21 °C.

[0031] P. A spray dispenser according to any one of paragraphs J to O, wherein the actuator is a button or a trigger.

[0032] Q. A spray dispenser according to any one of paragraphs J to P, wherein the container, valve body, valve stem, nozzle and actuator comprise plastic.

[0033] R. A spray dispenser comprising: a container configured to contain a composition and a compressed gas propellant; a supply passage in fluid communication with the container; an actuator operatively connected to a valve manifold; and a nozzle in fluid communication with the supply passage and configured to atomize the composition, the nozzle comprising:

[0034] Substantially cup-shaped nozzle insert having an outer surface and a cavity extending along a nozzle longitudinal axis NL and an end face;

[0035] A plurality of generally radially extending vanes disposed on the end face;

[0036] A vortex chamber adjacent the end face and having a chamber depth CH and a chamber diameter CD along the longitudinal axis NL, and wherein the vortex chamber is disposed substantially concentrically with the cavity and in fluid communication with a groove;

[0037] An outlet orifice having an orifice diameter OD and an orifice depth OH along the nozzle longitudinal axis NL and disposed substantially concentrically with the vortex chamber and in fluid communication with the vortex chamber;

[0038] A nozzle body for receiving and holding the nozzle insert, the nozzle body in fluid communication with a supply passage for receiving the liquid to be atomized and including a plug post having an end surface; and

[0039] A plurality of generally radially extending vanes substantially defined by the end surface and the groove, the vanes in fluid communication with the supply passage and having a radial vane depth VH

[0040] Wherein the chamber diameter CD decreases from adjacent the radial vanes to the outlet orifice, and wherein the chamber diameter CD is less than or equal to 800 microns.

[0041] S. A spray dispenser according to paragraph R, wherein the radial vane depth VH is less than the chamber depth CH.

[0042] T. A spray dispenser according to paragraph R or paragraph S, wherein the container comprises a liquid air or fabric freshening composition and a compressed gas propellant. Description of the Drawings

[0043] Figure 1 Is a perspective view of the spray dispenser.

[0044] Figure 2 is a side elevation view of a spray dispenser.

[0045] Figure 3 is Figure 2 a cross-sectional view of the spray dispenser.

[0046] Figure 4 is a side elevation view of a spray dispenser having a button actuator and a base cup.

[0047] Figure 5 is a side elevation view of a spray dispenser without an actuator or a base cup.

[0048] Figure 6 is Figure 5 a cross-sectional view thereof having a composition delivery device in the form of a sachet.

[0049] Figure 7 is Figure 5 a cross-sectional view thereof having a composition delivery device in the form of a dip tube.

[0050] Figure 8 is an exploded perspective view of a shield, an actuator, a manifold, and a nozzle of a spray dispenser.

[0051] Figure 9 is a cross-sectional view of a part of a spray dispenser, illustrating the shield, the actuator, a valve assembly, and the manifold.

[0052] Figure 10 is Figure 9 a cross-sectional view of a part thereof, illustrating a valve stem in a closed position.

[0053] Figure 11 is Figure 9 a cross-sectional view of a part thereof, illustrating a valve stem in a fully open position.

[0054] Figure 12 is a cross-sectional view of the manifold and the nozzle.

[0055] Figure 13 is a cross-sectional view of a part of the manifold and the nozzle.

[0056] Figure 14 is a cross-sectional view of a part of the nozzle including a nozzle body and a nozzle insert.

[0057] Figure 15 is a cross-sectional view of a part of the nozzle including a nozzle body and a nozzle insert.

[0058] Figure 16 is a front elevation view of the interior of a nozzle insert having grooves, a swirl chamber, and discharge orifices.

[0059] Figure 17Is a perspective view of a nozzle insert having grooves, a swirl chamber, and a discharge orifice.

[0060] Figure 18 Is a cross-sectional view of the nozzle insert.

[0061] Figure 19 Is a cross-sectional view of the nozzle insert.

[0062] Figure 20 Is a cross-sectional view of the nozzle insert.

[0063] Figure 21 Is a cross-sectional view of a part of the nozzle insert.

[0064] Figure 22 Is a perspective view of the radial vanes, swirl chamber, and discharge orifice of the nozzle.

[0065] Figure 23 Is a side elevation view of the radial vanes, swirl chamber, and discharge orifice of the nozzle. Detailed Description

[0066] The present disclosure can be more readily understood by reference to the following detailed description of exemplary and preferred embodiments. It should be understood that the scope of the claims is not limited to the specific products, methods, conditions, devices, or parameters described herein, and the terms used herein are not intended to limit the embodiments protected by the claims.

[0067] Furthermore, as used in the specification including the appended claims, the singular forms "a", "an", and "the" also include the plural, and reference to a particular numerical value includes at least that particular value unless the context clearly dictates otherwise. When expressing a range of values, another embodiment includes starting from one particular value and / or ending at another particular value. Similarly, when a value is expressed as an approximation by use of the antecedent "about", it should be understood that the particular value forms another embodiment. All ranges are inclusive of the end values and combinable. Unless otherwise indicated, all percentages and ratios used herein are by weight of the total product, and all measurements are made at 21°C.

[0068] A spray dispenser can include a container, a valve assembly in fluid communication with the container, an actuator operatively connected to the valve assembly, and a nozzle in fluid communication with the valve assembly. The container can be configured to hold a composition and a propellant. The propellant can be a compressed gas propellant.

[0069] Reference Figures 1 to 8, the spray dispenser 10 may include a container 12, a valve assembly 11 in fluid communication with the container 12, an actuator 13 operatively connected to the valve assembly 11, and a nozzle 14 in fluid communication with the valve assembly 11. Portions of the valve assembly 11, the actuator 13, and the nozzle 14 may be at least partially received within or operatively connected to a shroud 26. The shroud may provide a surface for a user to grasp the spray dispenser. The shroud 26 may provide ergonomic functionality to the spray dispenser. The shroud 26 may also improve the aesthetics of the spray dispenser by hiding some components.

[0070] Reference Figure 5 and Figure 8 , the container 12 may include a first end portion 16, a second end portion 17, and a sidewall 18 extending between the first end portion 16 and the second end portion 17. The container 12 defines an interior 15. The first end portion 16 of the container 12 includes a neck 22 that defines an opening 21. The first end portion 16 of the container 12 may be configured as the top or bottom of the container. The container 12 may be configured to hold a composition and a propellant within the interior 15.

[0071] The container 12 can be used to store the composition and / or the propellant. The container 12 can be any shape that allows the composition and / or the propellant to be retained within the interior of the container. For example, the container can be peanut-shaped, egg-shaped, or rectangular. It should be understood that the container 12 can be molded, which allows for the use of any number of shapes. The container 12 can be longitudinally elongated such that the container has an aspect ratio of a longitudinal dimension to a transverse dimension (such as a diameter). The aspect ratio can be greater than 1, equal to 1, such as in a sphere or a shorter cylinder, or the aspect ratio can be less than 1. The container can be cylindrical.

[0072] The container 12 can be configured to rest on a horizontal surface (such as a shelf, work surface, table, etc.). The first end portion or the second end portion can be configured to rest on the horizontal surface.

[0073] The second end portion 17 of the container 12 may include a recess or a base cup 25. The base cup 25 may be coupled to the second end portion 17 of the container 12 and may help strengthen the second end portion 17 and / or may allow the container to rest on a horizontal surface. The container 12 may not include a base cup and may be configured to sit on at least a portion of the second end portion 17. Suitable shapes for the second end portion 17 include petal-shaped, champagne-shaped, hemispherical, or other generally convex or concave shapes. Each of these shapes of the second end portion 17 may or may not be used with the base cup 25. The container 12 may have a generally flat base. This flat base may be formed by a bottle with possible indentations.

[0074] Container 12 can be made of a variety of materials including metal or plastic. Container 12 can include polyethylene terephthalate (PET), polyethylene furanoate (PEF), polyester, nylon, polyolefin, ethylene vinyl alcohol (EVOH), or mixtures thereof. The container can be single-layer or multi-layer. Container 12 can be injection molded or blow molded, such as in an injection stretch blow molding process or an extrusion blow molding process.

[0075] The height of container 12 in the axial direction can range from about 6 cm to about 60 cm or from about 10 cm to about 40 cm. If a circular cross-section is selected, container 12 can have a cross-sectional perimeter or diameter of about 3 cm to about 60 cm or about 4 cm to about 10 cm. The volume of the container can range from about 40 cubic centimeters to about 1000 cubic centimeters, excluding any components therein (such as the composition delivery device 24).

[0076] Reference Figures 7 to 8 , the spray dispenser 10 can include a composition delivery device 24. The composition delivery device 24 can be used to contain the composition and / or propellant from the spray dispenser 10 when needed and / or to provide the delivery of the composition and / or propellant from the spray dispenser 10. Suitable composition delivery devices 24 include pistons, such as Figure 7 the bags exemplified, or such as Figure 8 the dip tubes shown. The composition delivery device 24 can comprise polyethylene terephthalate (PET), polypropylene (PP), polyethylene furanoate (PEF), polyester, nylon, polyolefin, EVOH, or mixtures thereof. When the composition delivery device 24 is in the form of a bag as Figure 7 exemplified, the bag can be disposed within the container 12 and configured to store the composition therein. Continuing to refer to Figure 7 , the propellant can be disposed within the container 12 and / or between the container and the bag. A portion of the bag 24 can be coupled to at least one of the container 12 and a portion of the valve assembly 11 (such as the valve body 19). The bag can be positioned between the container 12 and the valve body 19. The bag can be inserted into the container 12 and subsequently coupled to the container. The bag can be coupled to the valve body 19, and the valve body 19 coupled to the bag can subsequently be inserted into the container 12.

[0077] Container 12 and / or the composition delivery device 24 can be transparent or substantially transparent. The benefit provided by this arrangement is that the consumer knows when the composition is approaching exhaustion and allows for improved communication of composition properties (such as color, viscosity, etc.). Moreover, if the background on which a marking (such as a label or other decoration of the container) is applied is light-transmissive, such decorations can be more visible. The label can be shrink-wrapped, printed, etc., as known in the art.

[0078] At 21 °C, the container 12 can be pressurized with a propellant to an initial internal gauge pressure of about 500 kPa to about 1500 kPa, or about 750 kPa to about 1300 kPa, or about 900 kPa to about 1100 kPa. The spray dispenser 10 can have an initial propellant pressure of about 1500 kPa and a final propellant pressure of about 120 kPa, an initial propellant pressure of about 1030 kPa to a final propellant pressure of about 550 kPa, an initial propellant pressure of about 900 kPa and a final propellant pressure of about 300 kPa to about 480 kPa, or an initial propellant pressure of about 500 kPa and a final propellant pressure of about 0 kPa, including any value between the stated ranges. The volume ratio of the composition to the propellant can be in the range of about 40 / 60 to about 70 / 30, alternatively in the range of about 50 / 50 to about 60 / 40.

[0079] The propellant can include compressed gases (such as nitrogen and air), hydrofluoroolefins (HFOs) (such as trans-1,3,3,3-tetrafluoroprop-1-ene), and mixtures thereof. Propellants listed in US Federal Register 49 CFR 1.73.115, Class 2, Part 2.2 can be acceptable. The propellant can be condensable. When the composition is exhausted during use, the condensable propellant can provide the benefit of a flatter decompression curve at the vapor pressure upon condensation. A condensable propellant can provide the beneficial effect that a greater volume of gas can be placed in the container at a given pressure. Generally, the highest pressure occurs after the spray dispenser is filled with the composition but before the user first dispenses the composition.

[0080] Reference Figures 7 to 11 , the valve assembly 11 can be at least partially disposed in the opening 21 of the container 12 and can be coupled to a portion of the neck 22 of the container 12. As used throughout this disclosure, the term "coupled" includes direct or indirect coupling. "Coupled" includes removably coupled and fixedly coupled. "Coupled" includes both mechanical attachment (such as by screws, bolts, interference fits, friction fits, crimping, welding, and integral molding) and chemical attachment (such as by adhesives or inherent adhesive properties of the materials being attached). The composition delivery device 24 can be coupled to at least one of a portion of the container 12 and / or a portion of the valve assembly 11, and the composition delivery device 24 can be in fluid communication with the valve stem 20 and the nozzle 14.

[0081] Reference Figures 7 to 8 , the valve body 19 can extend about a longitudinal axis L. The valve body 19 can include an internal passage 23, which can substantially surround the longitudinal axis 70.

[0082] The composition delivery device 24 can be at least partially disposed within the container 12, and the valve assembly 11 can be coupled to the container 12 and be in operative communication with the composition delivery device 24. The composition and the propellant can be stored in the container 12. Upon dispensing, the composition and / or the propellant can travel from and / or through the composition delivery device 24 and through the valve assembly 11.

[0083] Reference Figures 9 to 12 , the valve assembly 11 can be in fluid communication with a supply passage 32 of the manifold 29, which in turn is in fluid communication with the nozzle 14. The supply passage extends from an outlet of the valve stem 20 (the starting point of the manifold 29) and extends to an outlet adjacent the ambient environment of the discharge orifice 44. The nozzle 14 directs the composition out of the container 12 and into the environment or onto a target surface. The actuator 13 can be engaged by a user and is configured to initiate and terminate the dispensing of the composition and / or the propellant. In other words, the actuator 13 provides selective dispensing of the composition and / or the propellant. The actuator 13 can be depressible and operable as a trigger, button, etc. to release the composition from the spray dispenser 10. The actuator 13 can be operatively connected to the valve assembly 11 and / or the shroud 26.

[0084] The supply passage 32 can be defined by a supply passage length L SC measured along a central axis of fluid flow through the supply passage 32 of the manifold 29. The supply passage length L SC is measured from a starting point adjacent the valve stem 20 of the supply passage 32 and the manifold 29 to an outlet of the discharge orifice at an opposite end of the manifold of the nozzle body 27, as Figure 12 shown. The supply passage length L SC can be at least 20 mm, or at least 23 mm, or at least 25 mm. L SCIt can be 15 mm to 70 mm, 15 mm to 60 mm, 15 mm to 50 mm, 15 mm to 40 mm, 15 mm to 35 mm, 15 mm to 30 mm, 15 mm to 25 mm, 20 mm to 70 mm, 20 mm to 60 mm, 20 mm to 50 mm, 20 mm to 40 mm, 20 mm to 35 mm, 20 mm to 30 mm, 20 mm to 25 mm, 23 mm to 70 mm, 23 mm to 60 mm, 23 mm to 50 mm, 23 mm to 40 mm, 23 mm to 35 mm, 23 mm to 30 mm, 23 mm to 25 mm, 25 mm to 70 mm, 25 mm to 60 mm, 25 mm to 50 mm, 25 mm to 40 mm, 25 mm to 35 mm, 25 mm to 30 mm, 30 mm to 70 mm, 30 mm to 60 mm, 30 mm to 50 mm, 30 mm to 40 mm, 40 mm to 70 mm, 40 mm to 60 mm, 40 mm to 50 mm, 50 mm to 70 mm, 50 mm to 60 mm, or 60 mm to 70 mm. Lsc defines the pressure loss through the system. Not bound by theory, Lsc less than 15 mm is conventionally used in button actuator systems and requires increased force from the end user for extended periods of time. In contrast, Lsc within the ranges described above is envisioned SC to provide an improved end-user experience as less force is required and longer spray times are achieved. Lsc greater than 70 mm is envisioned to result in higher pressure losses through the channels.

[0085] The valve assembly 11 can be at least partially disposed in or inserted into the opening 21 of the neck 22 of the container 12, such as Figure 7 and Figure 8 shown. The valve assembly 11 can include a valve body 19, a valve stem 20, and an elastic member 56 that forms a liquid and / or gas seal between the valve body 19 and the container 12. At least a portion of the valve assembly 11 can move in association with the remainder of the spray dispenser to open and close the spray dispenser to dispense the composition. Referring to Figures 7 to 12 , the valve assembly 11 can be opened due to the movement of the valve stem 20, which movement can be opened by using the actuator 13 or by manual or other mechanical depression of the valve stem 20. When the valve body 19 is opened, for example, by the actuator 13, a fluid flow path is formed for dispensing the composition through the nozzle 14 onto the surrounding or target surface. The user can open the valve assembly 11, for example, by selective actuation of the actuator 13.

[0086] Referring to Figures 9 to 11, the valve stem 20 can extend through the internal passage 23 of the valve body 19. The valve stem 20 includes a valve stem opening 58 and a valve stem passage 60. The valve stem 20 provides a flow path for the composition from the interior 15 of the container 12 to the supply passage 32. The valve stem 20 is operatively connected to the actuator 13. Refer to Figure 10 , the valve stem 20 can be positioned relative to the valve body 19 in a closed position such that the valve stem 20 and particularly the valve stem opening 58 are not in fluid communication with the composition delivery device 24. The valve stem 20 can be moved relative to the valve body 19, for example, between a closed position and a fully open position. Refer to Figure 11 , when the valve stem 20 is in the fully open position, the valve stem opening 58 of the valve stem 20 is in fluid communication with the composition delivery device 24. When the valve stem 20 moves from the closed position to the fully open position, the valve stem 20 can be positioned in other positions. The valve stem 20 can include a valve stem passage 60 that is in fluid communication with the valve stem opening 58, through which the composition and / or propellant can flow out of the container 12.

[0087] The valve assembly 11 including the valve body 19 and the valve stem 20 can be made of any substantially rigid material (such as steel, aluminum or their alloys, fiberglass, or plastic). However, for economic reasons, they can each be made of polyethylene plastic and formed by injection molding, but other processes for appropriate parts (such as plastic welding or adhesive bonding) are equally applicable.

[0088] Refer to Figures 12 to 15 , the nozzle 14 includes a nozzle body 27 and a nozzle insert 36. The nozzle body 27 can be integral with the manifold 29 or can be a separate structure attached to the manifold 29 by mechanical means. The nozzle body 27 can be provided with a generally cylindrical interior and can have various external configurations or structures (e.g., raised gripping surfaces, recesses for finger placement, etc.) that can assist the user in operating the dispenser. The supply passage 32 can extend through the nozzle body 27 for receiving the nozzle insert 36. The supply passage 32 can define an inner wall 34. The nozzle insert 36 can be coupled to the nozzle body 27 by a friction interference fit (for illustrative purposes only) between the inner wall 34 and the nozzle insert 36. The friction connection (more commonly referred to as a press fit) between the nozzle insert 36 and the supply passage 32 can be tight but removable to facilitate cleaning or flushing out debris that might otherwise accumulate and block the nozzle.

[0089] The corresponding surfaces of the supply passage 32 and the nozzle insert 36 are provided in appropriate sizes and materials to effectively form a seal between the two such that when the dispenser is in operation, there will generally be no liquid flow between the surfaces. Those skilled in the art will understand that the nozzle insert 36 can be connected to the supply passage 32 by means other than a friction interference fit (such as adhesive bonding, welding, mechanical connection structures (e.g., threads, tabs, slots, rings, etc.) or by being integrally formed with a supply annulus).

[0090] The nozzle insert 36 is for providing fluid communication with the container 12 such that the composition to be dispensed can be transported from the container 12 to the nozzle 14.

[0091] The insert strut 31 can be disposed adjacent to the nozzle insert 36, as Figures 12 to 15 best illustrated. The insert strut 31 can have a substantially flat end surface 28 adjacent to its distal end and an insert strut surface 30. When viewed in the direction indicated by the Figure 13 arrow in, the end surface 28 can be generally circular. The insert strut 31 can be a separate structure that can be attached to the nozzle body 27 by mechanical means (e.g., threading, press fitting, etc.), or can be integrally formed with the nozzle body 27 to simplify manufacturing (such as by injection molding). The supply channel 32 generally forms a supply annulus 50 defined by the strut surface 30 and the inner wall 34. The supply channel 32 can be adjacent to the nozzle insert 36 and in fluid communication with the nozzle insert 36 to initially receive fluid from the container 12.

[0092] As Figures 16 to 23 best shown, the nozzle insert 36 can be generally cup-shaped, having an outer surface 37, a cavity 38 with a cavity surface 39, and an end face 40. The swirl chamber 42 is adjacent to the end face 40 and is positioned generally concentrically with the centerline of the cavity 38, having a chamber diameter CD, a chamber depth CH, and defining a swirl chamber volume.

[0093] The size of the chamber diameter CD of the swirl chamber 42 can gradually decrease from the vane outlet 52 to the discharge orifice 44. This can result in the swirl chamber 42 having a generally conical shape or a bowl shape. In contrast to a swirl chamber having a drilled shape, the shape of the swirl chamber 42 can contribute to a relatively small volume of the swirl chamber 42. Without being bound by theory, the decrease in CD from the vane outlet 52 to the discharge orifice 44 can reduce the presence of dead zones (also known as swirl zones) within the swirl chamber. Dead zones can be created by the rapid movement of the composition entering from the vane outlet 52, moving rapidly to the discharge orifice 44, creating a vacuum in a conventional drilled-shaped swirl chamber. This vacuum causes lost composition to "swirl" at the edges of the conventional drilled swirl chamber but not leave through the discharge orifice 44. In contrast, it is contemplated that the reduced swirl chamber volume, the reduced CD, or both prevent dead zones within the swirl chamber 42 of the present disclosure.

[0094] The discharge orifice 44 having an orifice diameter OD and an orifice depth OH is adjacent to the swirl chamber 42 and is positioned generally concentrically with the swirl chamber 42. The discharge orifice 44 thus provides fluid communication between the swirl chamber 42 and the surrounding environment. As Figures 16 to 20Optimally illustrated, a plurality of grooves 46 may be provided on the end face 40, extending generally radially inwardly from the cavity surface 39 to the swirl chamber 42. Each groove 46 is generally tangentially connected to the swirl chamber 42 and the nozzle insert 36. The nozzle insert 36 may include two or more spaced-apart grooves 46. The nozzle insert 36 may have three grooves 46 disposed generally radially and equidistantly around the swirl chamber 42. The nozzle insert 36 may have two, three, four or more than four grooves 46.

[0095] When the nozzle insert 36 has been fully assembled with the inner wall 34 of the nozzle body 27 such that the end surface 28 and the end face 40 are in contact (as Figures 13 to 15 and Figures 21 to 23 optimally shown), a plurality of radial vanes 48 and a supply annulus 50 are defined. The supply annulus 50 is formed between the cavity surface 39 and the strut surface 30 and extends along at least a portion of the length of the cavity surface 39 such that the supply annulus 50 is in fluid communication with one or more of the radial vanes 48. The radial vanes 48 may be defined by the juxtaposed positions of the end surface 28 of the insert strut 31 and the grooves 46 of the nozzle insert 36. The radial vanes 48 may be defined by a radial vane depth VH. The nozzle insert 36 may define a nozzle longitudinal axis NL.

[0096] The swirl chamber 42 may be defined by a chamber diameter CD that is less than or equal to 900 microns, or less than or equal to 800 microns, or less than or equal to 750 microns, or less than or equal to 700 microns. It is contemplated that a swirl chamber having a larger CD may take longer to stop the swirling of the composition within the swirl chamber upon actuator release compared to a swirl chamber having a smaller CD. When the composition continues to swirl within the vortex chamber for a longer time, it is contemplated that this results in the formation of large droplets.

[0097] The swirl chamber 42 may be defined by a swirl chamber depth CH that is less than or equal to 500 microns, or less than or equal to 450 microns, or less than or equal to 400 microns. It is contemplated that a swirl chamber having a larger CH may take longer to stop the swirling of the composition within the swirl chamber upon actuator release compared to a swirl chamber having a smaller CH. When the composition continues to swirl within the vortex chamber for a longer time, it is contemplated that this results in the formation of large droplets.

[0098] The swirl chamber 42 may be defined by a swirl chamber volume in the range of from about 0.095 mm 3 to about 0.277 mm 3 or from about 0.095 mm 3 to about 0.135 mm 3 It is contemplated that a swirl chamber having a larger swirl chamber volume may take longer to stop the swirling of the composition within the swirl chamber upon actuator release compared to a swirl chamber having a smaller swirl chamber volume. When the composition continues to swirl within the vortex chamber for a longer time, it is contemplated that this results in the formation of large droplets.

[0099] The discharge orifice 44 may be defined by an orifice diameter OD that is less than or equal to 350 microns, or less than or equal to 270 microns. The discharge orifice may be defined by an orifice depth OH that is less than or equal to 400 microns, or less than or equal to 350 microns, or at least 300 microns. It is contemplated that an OD greater than 400 microns may result in large droplet sizes with a Dv90 particle size greater than 100 microns.

[0100] The ratio of the chamber diameter CD to the orifice diameter OD may be greater than about 1, or greater than about 2.

[0101] When the radial vane is fed into the chamber, the radial vane depth VH may be less than the chamber depth CH. For example, the radial vane depth may be less than 500 microns, or less than 400 microns, or less than 350 microns, or less than 300 microns, or less than 250 microns.

[0102] The nozzle body 27 and the nozzle insert 36 may be made of any substantially rigid material (such as steel, aluminum or their alloys, fiberglass, or plastic). However, for economic reasons, they may each be made of polyethylene plastic and formed by injection molding, but other processes for suitable parts (such as plastic welding or adhesive bonding) are equally applicable.

[0103] In the operation of the spray dispenser 10, the user applies pressure to the actuator 13, which operates the valve assembly 11 to allow the composition to flow from the container through the valve assembly 11 and to the nozzle 14. When the actuator 13 is fully actuated, the valve stem is in the fully open position, and a fluid flow path is formed from the container 12 through the nozzle 14. The pressure of the propellant forces the composition from the container through the composition delivery device 24, through the valve stem 20, and to the supply passage 32 of the manifold 29. The composition enters the nozzle 14 from the supply passage 32, passes through the supply annulus 50, enters the vane inlet 54, passes through the vane outlet 52, enters the swirl chamber 42, and finally passes through the discharge orifice 44.

[0104] More specifically, the composition can longitudinally traverse the nozzle body 27 when leaving the supply passage 32 and enter the supply annulus 50. The pressurized composition then passes through the supply annulus 50 and is directed into a plurality of radial vanes 48. Although it is preferred that the nozzle insert 36, the supply passage 32, and the supply annulus 50 cooperate to transport the liquid from the container to the plurality of vanes 48, it should be understood that other supply structures (e.g., channels, chambers, reservoirs, etc.) can equally be applied to this purpose, either individually or in combination. The composition is directed radially inwardly into the swirl chamber 42. The composition preferably exits the radial vanes 48 substantially tangentially into the swirl chamber 42, and the rotational energy imparted to the liquid by each radial vane 48 and the tangential movement into the swirl chamber 42 generally create a low-pressure region adjacent the center of the swirl chamber 42. This low-pressure region will tend to allow ambient air or gas to penetrate into the core of the swirl chamber 42. The composition then exits the swirl chamber 42 as a thin liquid film (surrounding the aforementioned air core) and is directed through the discharge orifice 44 to the surrounding environment. Upon discharge, the instability inherent in the liquid film causes the composition to break into liquid filaments and then break into discrete particles or droplets, thereby forming a spray.

[0105] When the actuator is released, in the case where the actuator moves from the fully actuated position to the rest position, the valve stem moves from the fully open position to the closed position. Once the valve stem is no longer in fluid communication with the container, the composition retained in the supply passage 32, the supply annulus 50, the radial vanes 48, the swirl chamber 42, and the discharge orifice 44 continues to exit the discharge orifice 44 until the initial momentum weakens to a state where it can no longer force the composition to leave the discharge orifice 44.

[0106] The nozzle of the present disclosure is capable of dispensing substantially uniform-sized droplets of the composition during complete actuation by the user. For example, when the actuator is in the fully actuated position, the droplets of the composition exiting the nozzle have substantially the same size as the droplets of the composition exiting the nozzle when the actuator is released and returns to the rest position. To characterize the droplet size of the droplets exiting the nozzle in a single actuation, the following Dv90 value is defined. The fully open minimum Dv90 particle size is the minimum value reported by the Dv90 particle size test method provided below when the actuator is fully actuated and the valve stem is in the fully open position within the first 350 milliseconds (ms) of actuation. The fully open maximum Dv90 particle size is the maximum value reported when the actuator is fully actuated and the valve stem is in the fully open position within the first 350 ms of actuation. The fully open Dv90 particle size range is equal to the difference between the fully open maximum Dv90 particle size and the fully open minimum Dv90 particle size. The minimum Dv90 particle size is the minimum reported value within the entire 400 ms spray. The closed maximum Dv90 particle size is the maximum value reported in the last 50 ms after the initial 350 ms actuation when the actuator is moving from the fully actuated position to the closed position and the valve stem is moving from the fully open position to the closed position. The ratio of the Dv90 particle sizes is the ratio of the closed maximum Dv90 particle size to the fully open minimum Dv90 particle size.

[0107] The fully opened minimum Dv90 particle size can range from about 60 microns to about 100 microns, or from about 70 microns to about 90 microns. The fully opened maximum Dv90 particle size can range from about 60 microns to about 100 microns, or from about 80 microns to about 100 microns. The fully opened Dv90 particle size range can be less than 15 microns, or can be less than 10 microns. The minimum Dv90 particle size can range from about 60 microns to about 100 microns, or from about 70 microns to about 90 microns. The closed maximum Dv90 particle size can range from about 60 microns to about 100 microns, or from about 80 microns to about 100 microns. It is contemplated that particles having a particle size greater than 100 microns have a relatively higher probability of falling to the floor relatively quickly and taking a relatively longer time to evaporate compared to particles having a particle size less than 100 microns, resulting in an undesired consumer experience in terms of floor wetness. The ratio of the closed maximum Dv90 particle size to the minimum Dv90 particle size can be less than 5, or less than 4, or less than 3, or less than 2, or less than 1.5. The ratio can be from 0.01 to 5, 0.01 to 4, 0.01 to 3, 0.01 to 2, 0.01 to 1.5, 0.1 to 5, 0.1 to 4, 0.1 to 3, 0.1 to 2, 0.1 to 1.5, 0.5 to 5, 0.5 to 4, 0.5 to 3, 0.5 to 2, 0.5 to 1.5, 0.75 to 5, 0.75 to 4, 0.75 to 3, 0.75 to 2, 0.75 to 1.5, 1 to 5, 1 to 4, 1 to 3, 1 to 2, 1 to 1.5 or about 1.15. This ratio describes the spray consistency between the start and stop of the spray. It is contemplated that ratios greater than 5 are associated with relatively large particle sizes (such as greater than 500 microns) that can result in a greater degree of deposition.

[0108] From a full container having the entire amount of the composition initially loaded into the container until the container contains 75% of the initial amount of the composition loaded into the container, the ratio of the closed maximum Dv90 particle size to the minimum Dv90 particle size can be less than 5, or less than 4, or less than 3, or less than 2, or less than 1.5. The ratio can be from 0.01 to 5, 0.01 to 4, 0.01 to 3, 0.01 to 2, 0.01 to 1.5, 0.1 to 5, 0.1 to 4, 0.1 to 3, 0.1 to 2, 0.1 to 1.5, 0.5 to 5, 0.5 to 4, 0.5 to 3, 0.5 to 2, 0.5 to 1.5, 0.75 to 5, 0.75 to 4, 0.75 to 3, 0.75 to 2, 0.75 to 1.5, 1 to 5, 1 to 4, 1 to 3, 1 to 2, 1 to 1.5 or about 1.15.

[0109] The flow rate is determined by measuring the rate at which the composition is discharged from the container during any 10 - second usage period. The flow rate of the composition released from the spray dispenser can be from about 0.0001 grams per second (g / s) to about 2.5 g / s. Alternatively, the flow rate can be from about 0.001 g / s to about 1.9 grams per second, or from about 0.01 g / s to about 1.6 g / s. It is contemplated that a flow rate greater than 2.5 g / s will produce a larger particle size than a flow rate less than 2.5 g / s.

[0110] The cone angle can be greater than about 20 degrees, or greater than about 30 degrees, or greater than about 35 degrees, or greater than about 40 degrees, or greater than about 50 degrees.

[0111] Reference Figure 2 , the spray dispenser can be configured to spray the composition at an angle that is between the angle parallel to the base of the container and the angle A perpendicular thereto.

[0112] The composition can also be formulated for personal care products such as skin moisturizers, body deodorants, facial and body cleansers, baby wipes; surface care compositions such as hard - surface cleaners, wood polishes, and automotive cleaners; fabric care compositions such as detergents, softeners, anti - wrinkle agents, and fresheners; and air compositions including aerosols and sprays.

[0113] The spray dispenser can be used to freshen air, surfaces, fabrics, and / or combinations thereof.

[0114] Composition

[0115] The composition can be a liquid composition. The composition can be an air - freshening and / or fabric - freshening composition, a hard - surface composition, a dish composition, an insect - repellent composition, a disinfectant composition, a hair - care composition, a body - care composition, an antiperspirant or deodorant, etc. The composition can be an air and / or fabric - freshening composition.

[0116] The composition can contain a fragrance mixture comprising at least one perfume raw material (PRM). Various PRMs can be used. The composition can contain a fragrance mixture that comprises one or more of the following perfume raw materials. As used herein, "perfume raw material" means one or more of the following ingredients: aromatic essential oils; aromatic compounds; pre - fragrances; materials provided together with aromatic essential oils, aromatic compounds, and / or pre - fragrances, including stabilizers, diluents, processing aids, and contaminants; and any materials that typically accompany aromatic essential oils, aromatic compounds, and / or pre - fragrances.

[0117] The PRM may include one or more ketones. The PRM containing ketones may include any PRM containing one or more ketone moieties and capable of imparting a desired fragrance. The PRM may contain the ketone that constitutes the PRM, and the ketone is selected from: buccoxime; isojasmone; methyl β-naphthyl ketone; muscone; tonalide / musk adduct; α-ionone, β-ionone, δ-ionone, isoisomethylionone, damascenone, damarose, methyl dihydrojasmonate, menthone, carvone, camphor, fenchone, α-ionone, β-ionone, dihydro-β-ionone, γ-methylionone, heptyl cyclopentanone, dihydrojasmone, cis-jasmone, ambretone, methyl cedrenone or methyl cedryl ketone, acetophenone, methyl acetophenone, p-methoxyacetophenone, methyl β-naphthyl ketone, benzylacetone, benzophenone, p-hydroxybutyrophenone, apiole or livescone, 6-isopropyldecahydro-2-naphthone, dimethyl octenone, fresh menthone, 4-(1-ethoxyvinyl)-3,3,5,5-tetramethylcyclohexanone, methylheptenone, 2-(2-(4-methyl-3-cyclohexen-1-yl)propyl)-cyclopentanone, 1-(p-menthen-6(2)-yl)-1-acetone, 4-(4-hydroxy-3-methoxyphenyl)-2-butanone, 2-acetyl-3,3-dimethylnorbornane, 6,7-dihydro-1,1,2,3,3-pentamethyl-4(5H)-indenone, 4-damascenol, dulcinyl or cassione, gelsone, hexalon, isocyclemone e, methylcyclocitral, methyl lavandulone, orivon, p-tert-butylcyclohexanone, verdone, delphone, muscone, neomethylionone, thujone, veloutone, 2,4,4,7-tetramethyl-6-octen-3-one, tetrapol, methyl dihydrojasmonate (hedione), sea breeze aldehyde, γ-undecalactone, vinyl tridecanoate, pentadecanolide, methyl nonyl ketone, cyclopentadecanone, ethylene glycol dodecanedioate, 3,4,5,6-tetrahydropseudoionone, 8-hexadecenolide, dihydrojasmone, 5-cyclohexadecenone and combinations thereof.

[0118] The PRM containing ketones includes PRMs selected from: α-ionone, δ-ionone, isoisomethylionone, carvone, γ-methylionone, β-ionone, ambretone, 2,4,4,7-tetramethyl-6-octen-3-one, benzylacetone, β-ionone, damascenone, methyl dihydrojasmonate, methyl cedryl ketone, methyl dihydrojasmonate (hedione), sea breeze aldehyde and combinations thereof. Preferably, the PRM containing ketones contains δ-ionone.

[0119] The composition may comprise a mixture of aldehydes that contribute to the fragrance properties and neutralize malodors in the gas phase and / or liquid phase via chemical reactions. Partially reactive or volatile aldehydes may be considered reactive aldehydes as used herein. According to the Schiff base formation pathway, reactive aldehydes may react with amine-based odors. Reactive aldehydes may also react with sulfur-based odors to form thioacetals, thiol hemithioacetals, and thioesters in the gas phase and / or liquid phase. It is desired that these vapor-phase and / or liquid-phase reactive aldehydes have little adverse effect on the desired fragrance properties, color, and / or stability of the product.

[0120] The composition may comprise a mixture of partially volatile aldehydes, which may be considered volatile aldehydes as used herein. Volatile aldehydes may also have a specific boiling point (B.P.) and octanol / water partition coefficient (P). The boiling points described herein are measured at a normal standard pressure of 760 mm Hg. The boiling points of many volatile aldehydes at a standard 760 mm Hg are provided, for example, in "Perfume and Flavor Chemicals (Aroma Chemicals)" written and published by Steffen Arctander in 1969.

[0121] The octanol / water partition coefficient of a volatile aldehyde is the ratio of its equilibrium concentrations in octanol and in water. The partition coefficient of a volatile aldehyde used in a malodor control composition may be more conveniently given in the form of its base-10 logarithm logP. The logP values of many volatile aldehydes have been reported. See, for example, the Pomona92 database, purchased from Daylight Chemical Information Systems, Inc. (Daylight CIS), Irvine, California. However, it is most convenient to calculate the logP value using the "CLOGP" program, also purchased from Daylight CIS. When experimental logP values are available in the Pomona92 database, the program may also list these values. "Calculated logP" (ClogP) is determined by the fragment method of Hansch and Leo (see A. Leo, Comprehensive Medicinal Chemistry, Volume 4, edited by C. Hansch, P. G. Sammens, J. B. Taylor, and C. A. Ramsden, page 295, Pergamon Press, 1990). The fragment method is based on the chemical structure of each volatile aldehyde and takes into account the number and type of atoms, the connectivity of the atoms, and the chemical bonding. The most reliable and widely used estimate of the ClogP value for this physicochemical property is preferably used instead of the experimental logP value in the selection of volatile aldehydes suitable for malodor control compositions.

[0122] The ClogP value can be defined by four groups, and the volatile aldehyde can be selected from one or more of these groups. The first group includes volatile aldehydes with a B.P. of about 250 °C or lower and a ClogP of about 3 or less. The second group includes volatile aldehydes with a B.P. of 250 °C or lower and a ClogP of 3.0 or greater. The third group includes volatile aldehydes with a B.P. of 250 °C or higher and a ClogP of 3.0 or less. The fourth group includes volatile aldehydes with a B.P. of 250 °C or higher and a ClogP of 3.0 or greater. The malodor control composition can comprise any combination of volatile aldehydes from one or more of the ClogP groups.

[0123] The malodor control composition can comprise about 0% to about 30%, alternatively about 25% of volatile aldehydes from Group 1, by total weight of the composition; and / or about 0% to about 10%, alternatively about 10% of volatile aldehydes from Group 2; and / or about 10% to about 30%, alternatively about 30% of volatile aldehydes from Group 3; and / or about 35% to about 60%, alternatively about 35% of volatile aldehydes from Group 4.

[0124] Exemplary reactive and / or volatile aldehydes that can be used in the composition include, but are not limited to, Adoxal (2,6,10-trimethyl-9-undecenal), p-tert-butylphenylpropionaldehyde (4-tert-butylphenylpropionaldehyde), Lilestralis 33 ((2-methyl-4-tert-butylphenyl)propionaldehyde), cinnamaldehyde, cinnamaldehyde (phenylacrolein, 3-phenyl-2-propenal), citral, geranial, neral (dimethyloctadienal, 3,7-dimethyl-2,6-octadien-1-al), cyclobutanal C (Cyclal C) (2,4-dimethyl-3-cyclohexene-1-carboxaldehyde), citronellal (3-(3-isopropyl-phenyl)-butyraldehyde), citronellal (3,7-dimethyl 6-octenal), cymal, cyclamen aldehyde, cyclosal, citral (α-methyl-p-isopropylphenyl propionaldehyde), methylnonane acetaldehyde, aldehyde C12MNA (2-methyl-1-undecanal), hydroxycitronellal, citronellal hydrate (citronellal hydrate)(7-hydroxy-3,7-dimethyloctan-1-aldehyde), neoheliotropin (3-(1,3-benzodioxolan-5-yl)-2-methylpropanal); 2-methyl-3-(3,4-methylenedioxyphenyl)propanal), endodecane (undec-10-ene-1-aldehyde), privet aldehyde, trimethylbenzaldehyde (2,4-dimethyl-3-cyclohexene-1-carboxaldehyde), jasmonic acid, oat aldehyde (2-methyl-3-tolyl) Propionaldehyde, 4-dimethylphenylpropionaldehyde), lyral (4-(4-hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde), melonal (2,6-dimethyl-5-heptenal), methoxymelonal (6-methoxy-2,6-dimethylheptenal), methoxycinnamaldehyde (trans-4-methoxycinnamaldehyde), lauryl aldehyde isohexenyl cyclohexenyl carboxaldehyde, glycerol tris ((3-methyl-4-phenylpropionaldehyde, 3-phenylbutyraldehyde), lyral, PTLinalool, Lyral, phenylpropanal (4-tert-butyl-α-methylhydrocinnamaldehyde), decadienal, tricyclodecenyl butyraldehyde (4-tricyclo[5.2.1.02,6]dec-8-en-8-yl butyraldehyde), Melafleur (1,2,3,4,5,6,7,8-octahydro-8,8-dimethyl-2-naphthaldehyde), methyloctylacetaldehyde, aldehyde C-11 MOA (2-methyldecanal), insecticide (2,6,10-trimethyl-5,9-undecadienal), citronellyloxyacetaldehyde, lily aldehyde 50 ((3,7-dimethyl-6-octenyl)oxyacetaldehyde), phenylacetaldehyde, anisaldehyde (3-methyl-5-phenylpentanal), paraldehyde, citral dimethyl tetrahydrobenzaldehyde (2,4-dimethyl-3-cyclohexene-1-carboxaldehyde), 2-phenylpropanal, water paraldehyde, rapeseed aldehyde, anisyl propanal, 4-methoxy-α-methylphenylpropanal (2-anisylidene propanal), methyl cedrylone A (1,2,3,4,5,6,7,8-octahydro-8,8-dimethyl-2-naphthaldehyde) and methyl cedrylone B (1-cyclohexene-1-carboxaldehyde).

[0125] Other exemplary aldehydes include, but are not limited to, acetaldehyde (ethanal), valeraldehyde, pentanal, Scentenal (octahydro-5-methoxy-4,7-methano-1H-inden-2-carbaldehyde), propionaldehyde (propanal), cyclooctanal, β-cyclooctanal, (2,6,6-trimethyl-1-cyclohexene-1-acetaldehyde), isocyclooctanal (2,4,6-trimethyl-3-cyclohexene-1-carbaldehyde), isobutyraldehyde, butyraldehyde, isovaleraldehyde (3-methylbutanal), methylbutanal (2-methylbutanal, 2-methylbutyraldehyde), dihydrocitronellal (3,7-dimethyloctanal), 2-ethylbutyraldehyde, 3-methyl-2-butenal, 2-methylpentanal, 2-methylbutanal, hexenal (2-hexenal, trans-2-hexenal), heptanal, octanal, nonanal, decanal, dodecanal, tridecanal, 2-dodecanal, methional, glutaraldehyde, glutaraldehyde, glutaraldehyde, heptenal, cis- or trans-heptenal, undecenal (2-, 10-), 2,4-octadienal, nonenal (2-, 6-), decenal (2-, 4-), 2,4-hexadienal, 2,4-decadienal, 2,6-nonadienal, octenal, 2,6-dimethyl-5-heptenal, 2-isopropyl-5-methyl-2-hexenal, Trifernal, β-methylphenylacetaldehyde, 2,6,6-trimethyl-1-cyclohexene-1-acetaldehyde, phenylbutenal (2-phenyl-2-butenal), 2-methyl-3-(p-isopropylphenyl)-propanal, 3-(p-isopropylphenyl)-propanal, p-tolylacetaldehyde (4-methylphenylacetaldehyde), anisaldehyde (p-methoxybenzaldehyde), benzaldehyde, linalool oxide (1-methyl-4-(4-methylpentyl)-3-cyclohexenecarbaldehyde), piperonal, 3,4-methylenedioxybenzaldehyde, α-amylcinnamaldehyde, 2-pentyl-3-phenylacrylaldehyde, vanillin (4-methoxy-3-hydroxybenzaldehyde), ethyl vanillin (3-ethoxy-4-hydroxybenzaldehyde), hexylcinnamaldehyde, jasmine aldehyde H (α-n-hexylcinnamaldehyde), sea breeze aldehyde, (p-ethyl-α,α-dimethylhydrocinnamaldehyde), ara flower (p-methyl-α-pentylcinnamaldehyde), methylcinnamaldehyde, α-methylcinnamaldehyde (2-methyl-3-phenylpropenal), α-hexylcinnamaldehyde (2-hexyl-3-phenylpropenal), salicylaldehyde (2-hydroxybenzaldehyde), 4-ethylbenzaldehyde, cuminaldehyde (4-isopropylbenzaldehyde), acetaldehyde, 2,4-dimethylbenzaldehyde, veratraldehyde (3,4-dimethoxybenzaldehyde), syringaldehyde (3,5-dimethoxy-4-hydroxybenzaldehyde), catecholaldehyde (3,4-dihydroxybenzaldehyde), Safranal (2,6,6-trimethyl-1,3-dienecarbaldehyde), dodecanal (PIN-2-ene-1-carbaldehyde), perillaldehyde L-4(1-methylethenyl)-1-cyclohexene-1-carbaldehyde, 2,4-Dimethyl-3-cyclohexene carbaldehyde, 2-methyl-2-pentenal, 2-methylpentenal, pyruvaldehyde, formyl tricyclodecane, mannaldial, cyclopropanecarbaldehyde, abietaldehyde, Corps Iris, methylal, and Corps 4322.,

[0126] The composition may comprise a polyol. Low molecular weight polyols having a relatively high boiling point compared to water (such as ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, and / or glycerol) can be used as malodor neutralizers to improve the odor neutralization of the composition. Some polyols (e.g., dipropylene glycol) can also be used to promote the dissolution of some fragrance components in the composition.

[0127] The diol can be glycerol, ethylene glycol, propylene glycol, dipropylene glycol, polyethylene glycol, propylene glycol methyl ether, propylene glycol phenyl ether, propylene glycol methyl ether acetate, dipropylene glycol methyl ether acetate, propylene glycol n-butyl ether, dipropylene glycol n-butyl ether, dipropylene glycol n-propyl ether, ethylene glycol phenyl ether, diethylene glycol n-butyl ether, dipropylene glycol n-butyl ether, diethylene glycol monobutyl ether, dipropylene glycol methyl ether, tripropylene glycol methyl ether, tripropylene glycol n-butyl ether, other diol ethers, or mixtures thereof. The diol used can be ethylene glycol, propylene glycol, or mixtures thereof. The diol used can be diethylene glycol.

[0128] Based on the weight of the composition, the low molecular weight polyol can be added to the composition in an amount of about 0.01% to about 5%, alternatively about 0.05% to about 1%, alternatively about 0.1% to about 0.5% by weight of the composition. When the solution evaporates from the fabric, a composition with a higher concentration can make the fabric prone to soiling and / or leave unacceptable visible stains on the fabric. The weight ratio of the low molecular weight polyol to the malodor-binding polymer is about 500:1 to about 4:1, alternatively about 1:100 to about 25:1, alternatively about 1:50 to about 4:1, alternatively about 4:1.

[0129] The composition may contain dissolved water-soluble uncomplexed cyclodextrin. As used herein, the term "cyclodextrin" includes any of the known cyclodextrins, such as unsubstituted cyclodextrins containing six to twelve glucose units, especially α-cyclodextrin, β-cyclodextrin, γ-cyclodextrin, and / or their derivatives and / or their mixtures. α-Cyclodextrin consists of six glucose units, β-cyclodextrin consists of seven glucose units, and γ-cyclodextrin consists of eight glucose units arranged in a cyclic ring. The specific coupling and conformation of the glucose units give cyclodextrin a rigid conical molecular structure with a hollow interior of a specific volume. The "lining" of the internal cavity is formed by hydrogen atoms and glycosidic bond-bridging oxygen atoms, so this surface is quite hydrophobic. The unique shape and physico-chemical properties of the cavity enable the cyclodextrin molecule to absorb organic molecules or portions of organic molecules that can fit into the cavity (forming an inclusion complex therewith). Many fragrance molecules can fit into the cavity.

[0130] The cyclodextrin molecules are described in U.S.5,714,137 and U.S.5,942,217. Cyclodextrin, if present, may be present in an amount of about 0.1% to about 5%, alternatively about 0.2% to about 4%, alternatively about 0.3% to about 3%, alternatively about 0.4% to about 2% by weight of the composition. When the solution evaporates from the fabric, a composition with a higher concentration may make the fabric prone to soiling and / or leave unacceptable visible stains on the fabric. The latter is particularly problematic on thin colored synthetic fabrics. To avoid or minimize the occurrence of fabric staining, the fabric may be treated with an amount less than about 5 mg of cyclodextrin / mg of fabric, alternatively less than about 2 mg of cyclodextrin / mg of fabric.

[0131] The composition may contain a buffer. The buffer may be an acidic buffer. The buffer may be a dibasic acid, a carboxylic acid, or a dicarboxylic acid. The carboxylic acid may be, for example, citric acid, polyacrylic acid, or maleic acid. The acid may be sterically stabilized. The acid may be used in the composition to maintain the desired pH. The composition may have a pH of about 4 to about 11, alternatively about 4 to about 9, alternatively about 4 to about 6.9, alternatively about 4 to about 7.

[0132] The buffer system may include one or more buffers selected from: citric acid, maleic acid, polyacrylic acid, and combinations thereof. It has been found that a buffer system containing a buffer selected from: citric acid, maleic acid, polyacrylic acid, and combinations thereof provides a stable composition with an extended shelf life.

[0133] The buffer system may contain citric acid and sodium citrate. It has been found that a buffer system containing citric acid and sodium citrate provides a stable composition with an extended shelf life.

[0134] Other suitable buffering agents for the composition include biological buffering agents. Some examples are nitrogen-containing materials, sulfonic acid buffers such as 3-(N-morpholino)propanesulfonic acid (MOPS) or N-(2-acetamido)-2-aminoethanesulfonic acid (ACES), which have a near-neutral pKa of 6.2 to 7.5 and provide sufficient buffering capacity at neutral pH. Other examples are amino acids such as lysine or lower alkanolamines, such as monoethanolamine, diethanolamine, and triethanolamine, or methyldiethanolamine or their derivatives. Other nitrogen-containing buffering agents are tris(hydroxymethyl)aminomethane (HOCH2)3CNH3 (TRIS), 2-amino-2-ethyl-1,3-propanediol, 2-amino-2-methyl-propanol, 2-amino-2-methyl-1,3-propanediol, disodium glutamate, N-methyldiethanolamide, 2-dimethylamino-2-methylpropanol (DMAMP), 1,3-bis(methylamine)-cyclohexane, 1,3-diamino-propanol, N,N'-tetramethyl-1,3-diamino-2-propanol, N,N-bis(2-hydroxyethyl)glycine (bis(hydroxyethyl)glycine), and N-tris(hydroxymethyl)methylglycine (tris(hydroxymethyl)methylglycine). Mixtures of any of the above substances are also acceptable.

[0135] The composition may contain a secondary or tertiary amine. If a secondary or tertiary amine is present, the composition may have a weight ratio of sulfur-containing pre-fragrance to the secondary or tertiary amine of about 1:1, based on the total weight of the composition. Alternatively, the weight of the pre-fragrance should be equal to or higher than the weight of the amine. If a secondary or tertiary amine is present, the weight ratio of the acidic buffer to the secondary or tertiary amine may be equal to or greater than 3:1, or greater than 5:1, or greater than 6:1.

[0136] The composition may be free of primary amines. Without wishing to be bound by theory, it is believed that primary amines inhibit the reaction of sulfur-containing pre-fragrances with unstable fragrance raw materials.

[0137] The composition may contain at least about 0%, alternatively at least about 0.001%, alternatively at least about 0.01% by weight of the buffering agent. The composition may also contain no more than about 1%, alternatively no more than about 0.75%, alternatively no more than about 0.5% by weight of the buffering agent.

[0138] The composition may contain a co-solvent to dissolve any excess hydrophobic organic materials, especially any PRM, and optional ingredients (such as repellents, antioxidants, etc.) that may be added to the composition and are not readily soluble in the composition to form a clear solution. Suitable solubilizing aids are surfactants, such as non-foaming or low-foaming surfactants. Suitable surfactants are anionic surfactants, non-ionic surfactants, cationic surfactants, amphoteric surfactants, zwitterionic surfactants, and mixtures thereof.

[0139] The composition may comprise nonionic surfactants, cationic surfactants, and mixtures thereof. The composition may contain surfactant derivatives of hydrogenated castor oil. Suitable ethoxylated hydrogenated castor oils that can be used in the compositions of the present invention include BASOPHOR from BASF TM and CREMOPHOR from Sigma Aldrich TM .

[0140] When a solubilizer is present, the solubilizer may be present in an amount of from about 0.01% to about 3%, alternatively from about 0.05% to about 1%, alternatively from about 0.01% to about 0.05% by weight of the composition.

[0141] The composition may comprise an effective amount of a compound for reducing microorganisms in the air or on inanimate surfaces. The antimicrobial compound is effective against Gram-negative and Gram-positive bacteria and fungi commonly present on indoor surfaces in contact with human skin or pets such as sofas, pillows, pet bedding, and carpets. Such microbial species include Klebsiella pneumoniae, Staphylococcus aureus, Aspergillus niger, Klebsiella pneumoniae, Steptococcus pyogenes, Salmonella choleraesuis, Escherichia coli, Trichophyton mentagrophytes, and Pseudomonoas aeruginosa. The antimicrobial compound may also be effective against viruses such as H1-N1, rhinovirus, respiratory syncytial virus, poliovirus type 1, rotavirus, influenza A virus, herpes simplex virus types 1 and 2, hepatitis A virus, and human coronaviruses.

[0142] The antimicrobial compound suitable for the composition can be any organic material that does not cause damage to the appearance of the fabric (e.g., decolorization, coloring such as yellowing, bleaching). Water-soluble antimicrobial compounds include organic sulfur compounds, halogenated compounds, cyclic organic nitrogen compounds, low molecular weight aldehydes, quaternary compounds, dehydroacetic acid, phenyl and phenoxy compounds, or mixtures thereof.

[0143] The composition may comprise a quaternary compound. Examples of commercially available quaternary compounds suitable for the composition are those from Lonza Corporation and those sold under the trade name The quaternary compound of didodecyldimethylammonium chloride obtained from Lonza Corporation.

[0144] The antimicrobial compound (if present) may be present in an amount of about 500 ppm to about 7000 ppm, alternatively about 1000 ppm to about 5000 ppm, alternatively about 1000 ppm to about 3000 ppm, alternatively about 1400 ppm to about 2500 ppm, based on the weight of the composition.

[0145] The composition may contain a preservative. The preservative may be included in an amount sufficient to prevent spoilage or the growth of inadvertently added microorganisms over a specific period of time, but not sufficient to contribute to the odor-neutralizing properties of the composition. In other words, the preservative is not used as an antimicrobial compound to kill the microorganisms on the surface on which the composition is deposited, thereby eliminating the odor generated by the microorganisms. Instead, it is used to prevent spoilage of the composition to extend the shelf life of the composition.

[0146] The preservative can be any organic preservative material that does not cause damage to the appearance of the fabric (e.g., decolorization, coloring, bleaching). Suitable water-soluble preservatives include organic sulfur compounds, halogenated compounds, cyclic organic nitrogen compounds, low molecular weight aldehydes, parabens, propylene glycol materials, isothiazolinones, quaternary compounds, benzoates, low molecular weight alcohols, dehydroacetic acid, phenyl and phenoxy compounds, or mixtures thereof.

[0147] Non-limiting examples of water-soluble preservatives include a mixture of about 77% 5-chloro-2-methyl-4-isothiazolin-3-one and about 23% 2-methyl-4-isothiazolin-3-one, which is a broad-spectrum preservative sold by Rohm and Haas Co. under the trade name CG as a 1.5% fresh solution; 5-bromo-5-nitro-1,3-dioxane, which is sold under the trade name Bronidox purchased from Henkel; 2-bromo-2-nitropropane-1,3-diol, which is sold under the trade name purchased from Inolex; 1,1'-hexamethylenebis(5-(p-chlorophenyl)biguanide) (commonly known as chlorhexidine) and its salts, such as salts with acetic acid and digluconic acid; a 95:5 mixture of 1,3-bis(hydroxymethyl)-5,5-dimethyl-2,4-imidazolidinedione and 3-butyl-2-iodopropargyl carbamate, which is sold under the trade name Glydant purchased from Lonza; N-[1,3-bis(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl]-N,N'-bis(hydroxy-methyl)urea, which is commonly known as diazolidinyl urea, under the trade name II was purchased from Sutton Laboratories, Inc.; N,N"-methylenebis{N'-[1-(hydroxymethyl)-2,5-dioxo-4-imidazolidinyl]urea}, which is commonly known as imidazolidinyl urea, for example, under the trade name was purchased from 3V-sigma; under the trade name Unicide was purchased from Induchem; under the trade name Germall was purchased from Sutton Laboratories, Inc.; polymethoxy bicyclic oxazolidine, which is under the trade name C was purchased from Hüls America; formaldehyde; glutaraldehyde; polyaminopropyl biguanide, which is under the trade name Cosmocil was purchased from ICI Americas, Inc., or under the trade name was purchased from Brooks, Inc; dehydroacetic acid; and benzisothiazolinone, which is under the trade name Koralone TM B-119 was purchased from Rohm and Hass Corporation.

[0148] The preservative (if present) may be present in an amount of about 0.0001% to about 0.5%, alternatively 0.0002% to about 0.2%, alternatively about 0.0003% to about 0.1% by weight of the composition.

[0149] The composition may comprise a wetting agent that provides a low surface tension that allows the composition to be easily and more evenly distributed on hydrophobic surfaces such as polyester fibers and nylon. The spreading of the composition also allows it to dry more quickly, so that the treated material can be used soon. In addition, the composition containing the wetting agent can better penetrate hydrophobic oily dirt to improve malodor neutralization. The composition containing the wetting agent can also provide improved "wear" static control. For concentrated compositions, the wetting agent facilitates the dispersion of many active substances such as antimicrobial active substances and fragrances in the concentrated composition.

[0150] 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 compounds. Polymer compounds prepared by sequential ethoxylation and propoxylation of primary compounds having a single reactive hydrogen atom such as C 12-18 fatty alcohols are generally incompatible with cyclodextrin. Named by BASF-Wyandotte Corp. (Wyandotte, Michigan) as and certain block polymer surfactant compounds are readily available.

[0151] Non-limiting examples of wetting agents compatible with cyclodextrin of this type are described in U.S. 5,714,137 and include surfactants purchased from Momentive Performance Chemical (Albany, New York). Exemplary Silwet surfactants are as follows:

[0152]

[0153] And mixtures thereof.

[0154] The total amount of surfactants (e.g., solubilizers, wetting agents) present in the composition can be 0% to about 3% or not more than 3%, alternatively 0% to about 1% or not more than 1%, alternatively 0% to about 0.9% or not more than 0.9%, alternatively 0% to about 0.7% or not more than 0.7%, alternatively 0% to about 0.5% or not more than 0.5%, alternatively 0% to 0.3% or not more than about 0.3% by weight of the composition. When the solution evaporates, compositions with higher concentrations can make the fabric prone to soiling and / or leave unacceptable visible stains on the fabric.

[0155] The aqueous composition can contain a carrier. The carrier can be water. The water can be distilled water, deionized water, tap water or water in a further purified form. The water can be present in any amount to make the composition an aqueous solution. The water can be present in an amount of about 85% to 99.5%, alternatively about 90% to about 99.5%, alternatively about 92% to about 99.5%, alternatively about 95% by weight of the composition. Water containing a small amount of low molecular weight monohydric alcohols (e.g., ethanol, methanol and isopropanol) or polyhydric alcohols (such as ethylene glycol and propylene glycol) can also be used. However, volatile low molecular weight monohydric alcohols, such as ethanol and / or isopropanol, should be restricted because these volatile organic compounds will cause flammability problems and environmental pollution problems. If a small amount of low molecular weight monohydric alcohol is present in the composition (due to adding these alcohols to such substances as fragrances or stabilizers for some preservatives), the content of the monohydric alcohol can be less than about 6%, alternatively less than about 3%, alternatively less than about 1% by weight of the composition.

[0156] Adjuvants can optionally be added to the compositions herein for their known purposes. Such adjuvants include, but are not limited to, water-soluble metal salts, antistatic agents, insect and moth repellents, colorants, antioxidants and mixtures thereof.

[0157] Method

[0158] Dv90 Particle Size Test Method

[0159] One of the main spray habits of aerosol users is the quick spray behavior, in which consumers perform multiple quick sprays, which results in large droplets being generated at the end of each spray. Experiments were conducted to reflect similar consumer spray habits. The Dv90 particle size data was measured and analyzed using the Spraytec 2000 from Malvern Panalytical. The spray dispenser was placed at a position where the generated spray was perpendicular to the laser of the Malvern Equipment. The discharge orifice of the nozzle was placed one inch away from the laser to capture the maximum possible particles that passed through the laser before falling. The spray was achieved by a complete press of the actuator, and this complete press of the actuator fully opened the valve stem to generate a fully developed spray, and the spray profile at the time of valve closure was captured by a quick release of the actuator. The spray duration of a complete press and quick release of the actuator lasted for 400 milliseconds, where the first segment of about 350 milliseconds represented the valve stem being in the fully open position, and the last segment of about 50 milliseconds represented the actuator being released and the valve stem moving from the fully open position to the closed position before complete closure. The particle size distribution and Dv90 particle size were obtained every 4 milliseconds using Malvern (for quick measurements, the data acquisition rate was set to 250 Hz), where Dv90 represents the particle size greater than 90% of the sampling volume. An example complete data set of the 400 - millisecond spray from the nozzle of Example 1 is shown in Table 7 below.

[0160] The following values can be determined from the obtained data set:

[0161] Fully Open Minimum Dv90 Particle Size Fully Open Maximum Dv90 Particle Size Fully Open Dv90 Particle Size Range Minimum Dv90 Particle Size Closed Maximum Dv90 Particle Size Ratio of Closed Maximum Dv90 to Minimum Dv90

[0162] Example

[0163] The nozzles described in Tables 1 and 2 (including the comparative examples and the examples of the claims of the present invention) were analyzed, and the Dv90 particle sizes are reported in Tables 3 to Figure 7 and.

[0164] Comparative nozzle 1 has a constant chamber diameter (CD) (like a drilled hole) throughout the chamber depth (CH), comparative nozzle 2 has a combination of a drilled hole and a tapered - decreasing CD throughout the CH, comparative nozzle 3 is a high - value linen - fresh aerosol room air freshener product commercially available from Walmart, and example nozzle 1 has a gradually decreasing curvature formed by a decreasing CD throughout the CH, as described in the present disclosure.

[0165] Table 1. Nozzle Sizes of Comparative Nozzles and Example Nozzles

[0166]

[0167] Table 2. Supply Channel Lengths of Comparative Nozzles and Example Nozzles

[0168]

[0169] "Fully open minimum Dv90 particle size" and "fully open maximum Dv90 particle size" respectively represent the minimum and maximum values of Dv90 recorded in the first 350 ms when the valve is in the fully open state. The difference between these minimum and maximum values represents the Dv90 particle size range generated when the valve is in the fully open state and is defined as the "fully open Dv90 particle size range". The change in particle size during a single cycle of actuator press and release is determined by two parameters, "minimum Dv90 particle size" and "closed maximum Dv90 particle size". "Minimum Dv90 particle size" represents the minimum value of Dv90 recorded within a cycle of 400 ms spray duration. "Closed maximum Dv90 particle size" represents the maximum value of Dv90 recorded within a cycle of 400 ms spray duration. "Closed maximum Dv90 particle size" is typically reported in the last 50 ms when the valve transitions from the fully open position to the closed position. The restriction of the flow from the closing valve changes the pressure inside the vortex chamber and typically generates larger particles just before complete closure. The "closed maximum Dv90:minimum Dv90 ratio" is the ratio of the above two parameters and illustrates the particle size consistency during the actuator press and release cycle. A lower value indicates relatively consistent particle size during the spray cycle defined above.

[0170] Unless otherwise stated, all the following particle sizes are in micrometers (μm).

[0171] Table 3. Dv90 Particle Sizes of Comparative Nozzle 1

[0172] Comparative Nozzle 1 Sample 1 Sample 2 Sample 3 Average Fully Open Minimum Dv90 Particle Size 106.61 99.49 111.73 105.94 Fully Open Maximum Dv90 Particle Size 116.68 109.06 122.42 116.05 Fully Open Dv90 Particle Size Range 10.07 9.57 10.69 10.11 Minimum Dv90 Particle Size 106.61 99.49 111.73 105.94 Closed Maximum Dv90 Particle Size 683.13 371.20 687.36 580.56 Ratio of Closed Maximum Dv90 to Minimum Dv90 6.41 3.73 6.15 5.43

[0173] Table 4. Dv90 Particle Sizes of Comparative Nozzle 2

[0174] Comparative Nozzle 2 Sample 1 Sample 2 Sample 3 Average Fully Open Minimum Dv90 Particle Size 89.83 72.30 94.71 85.61 Fully Open Maximum Dv90 Particle Size 98.93 81.14 109.48 96.52 Fully Open Dv90 Particle Size Range 9.10 8.84 14.77 10.90 Minimum Dv90 Particle Size 89.59 72.30 89.91 83.93 Closed Maximum Dv90 Particle Size 633.75 677.38 393.21 568.11 Ratio of Closed Maximum Dv90 to Minimum Dv90 7.07 9.37 4.37 6.94

[0175] Table 5. Dv90 Particle Sizes of Comparative Nozzle 3

[0176] Comparative Nozzle 3 Sample 1 Sample 2 Sample 3 Average Fully Open Minimum Dv90 Particle Size 103.02 103.98 118.06 108.35 Fully Open Maximum Dv90 Particle Size 113.61 115.91 130.27 119.93 Fully Open Dv90 Particle Size Range 10.59 11.93 12.21 11.58 Minimum Dv90 Particle Size 103.02 103.98 118.06 108.35 Closed Maximum Dv90 Particle Size 712.50 787.37 784.75 761.54 Ratio of Closed Maximum Dv90 to Minimum Dv90 6.92 7.57 6.65 7.05

[0177] Table 6. Dv90 Particle Sizes of Example Nozzle 1

[0178] Example Nozzle 1 Sample 1 Sample 2 Sample 3 Average Fully Open Minimum Dv90 Particle Size 83.13 88.26 84.37 85.25 Fully Open Maximum Dv90 Particle Size 90.50 94.08 93.72 92.77 Fully Open Dv90 Particle Size Range 7.37 5.82 9.35 7.51 Minimum Dv90 Particle Size 83.13 87.94 84.37 85.15 Closed Maximum Dv90 Particle Size 97.19 102.84 93.72 97.92 Ratio of Closed Maximum Dv90 to Minimum Dv90 1.17 1.17 1.11 1.15

[0179] Table 7. Particle Size Data of Example Nozzle 1 Every 4 Milliseconds

[0180]

[0181]

[0182]

[0183] Without being bound by theory, it is contemplated that the exemplary nozzle 1 is superior to the comparative nozzle because the swirl chamber has a reduced CD, thereby preventing dead zones in the swirl chamber of the exemplary nozzle 1, which in turn results in a reduced Dv90 particle size compared to the comparative nozzle.

[0184] As shown in Tables 3 to 5, the particle sizes of comparative nozzles 1, 2, and 3 have large variations within the cycle of actuator press and release, as exemplified by the average "closed maximum Dv90: minimum Dv90 ratio" of 5.43, 6.94, and 7.05, respectively. However, as shown in Table 6, the optimal combination of swirl chamber parameters (such as reduced CD, reduced CH, and thus reduced swirl chamber volume) in the exemplary nozzle 1 results in relatively consistent particle sizes during the cycle of actuator press and release. This is defined as a "closed maximum Dv90: minimum Dv90 ratio" of 1.15.

[0185] When the actuator is released, the valve begins to close. However, due to the large CD and large CH, a large amount of fluid inside the swirl chamber continues to atomize and disperse large particles through the orifice before complete closure. Each of the comparative nozzles 1, 2, and 3 has at least one of the following listed swirl chamber dimensions: a CD, CH, and swirl chamber volume larger than those of the exemplary nozzle 1. For example, even though comparative nozzle 2 has a reduced CD, due to the above phenomenon, it still produces large particles when the valve transitions from the fully open position to the closed position. The average "closed maximum Dv90 particle size" of comparative nozzle 2 is 568.11 microns (Table 4). It can also be noted that the parameter "fully open minimum Dv90 particle size" is nearly similar between comparative nozzle 2 and the exemplary nozzle 1, with a particle size of approximately 85 microns. This is because when the valve is in the fully open state, the combination of nozzle parameters (including orifice and swirl chamber characteristics) can produce smaller particle sizes and the atomization is efficient. However, the ability of the nozzle to quickly close without producing large particles when the actuator is released is only possible when using optimal swirl chamber characteristics (such as reduced CD, reduced CH, and smaller swirl chamber volume as described in the exemplary nozzle 1). The average "closed maximum Dv90 particle size" of the exemplary nozzle 1 is 97.92 microns (Table 6), which is much smaller compared to the average "closed maximum Dv90 particle sizes" of comparative nozzles 1, 2, and 3, which are 580.56 microns, 568.11 microns, and 761.54 microns, respectively. Therefore, the exemplary nozzle 1 exhibits a significantly smaller average "closed maximum Dv90: minimum Dv90 ratio" of 1.15 compared to comparative nozzle 1 (at a ratio of 5.43), comparative nozzle 2 (at a ratio of 6.94), and comparative nozzle 3 (at a ratio of 7.05).

[0186] The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact values recited. Instead, each such dimension is intended to mean the recited value and a functionally equivalent range around that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm".

[0187] It should be understood that every maximum numerical limitation given in this specification will include every lower numerical limitation, as if such lower numerical limitations were also expressly recited herein. Every minimum numerical limitation given throughout this specification will include every higher numerical limitation, as if such higher numerical limitations were expressly recited herein. Every numerical range given throughout this specification will include every narrower numerical range falling within such broader numerical range, as if such narrower numerical ranges were all expressly recited herein.

[0188] Unless expressly excluded or otherwise limited, each document cited herein, including any cross-referenced or related patent or patent application and any patent application or patent to which this application claims priority or for which it claims benefit of the filing date, is hereby incorporated by reference in its entirety. The citation of any document is not an admission that it is prior art with respect to any embodiment disclosed or claimed herein, nor is it an admission that it alone, or in any combination with any one or more other references, teaches, suggests, or discloses any such embodiment. Further, when any meaning or definition of a term in this invention conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to the term in this invention shall govern.

[0189] Although specific embodiments of the present disclosure have been illustrated and described, it will be apparent to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the disclosure. Accordingly, it is intended that all such changes and modifications that fall within the scope of the present disclosure be covered by the appended claims.

Claims

1. A spray dispenser, comprising: a container configured to contain a composition and a compressed gas propellant; a supply passage in fluid communication with the container; an actuator operatively connected to a valve manifold; and a nozzle in fluid communication with the supply passage and configured to atomize the composition, the nozzle comprising: a substantially cup-shaped nozzle insert having an outer surface, a cavity extending along a nozzle longitudinal axis NL, and an end face; a plurality of substantially radial grooves provided on the end face; a swirl chamber adjacent to the end face and having a chamber depth CH extending along the nozzle longitudinal axis NL and a chamber diameter CD, and wherein the swirl chamber is disposed substantially concentrically with the cavity and in fluid communication with the grooves, wherein the chamber diameter CD is less than or equal to 800 microns and the chamber depth CH is less than or equal to 500 microns; a discharge orifice having an orifice diameter OD and an orifice depth OH along the nozzle longitudinal axis NL, and disposed substantially concentrically with the swirl chamber and in fluid communication with the swirl chamber; a nozzle body for receiving and holding the nozzle insert, the nozzle body being in fluid communication with the supply passage for receiving the composition to be atomized and including an insert support having an end surface; and a plurality of substantially radial vanes substantially defined by the end surface and the grooves, the plurality of radial vanes being in fluid communication with the supply passage and having a radial vane depth VH.

2. The spray dispenser according to claim 1, wherein: the container contains a liquid composition and a compressed gas propellant; and the composition is an air or fabric freshening composition.

3. The spray dispenser according to any one of the preceding claims, wherein the flow rate of the composition discharged from the nozzle is in the range of about 1.3 g / s to about 1.9 g / s.

4. The spray dispenser according to any one of the preceding claims, wherein the minimum Dv90 particle size is in the range of about 60 microns to about 90 microns.

5. The spray dispenser according to any one of the preceding claims, wherein the initial pressure in the container is less than 1100 kPa at 21°C.

6. The spray dispenser according to any one of the preceding claims, wherein the swirl chamber has a chamber diameter CD of 700 mm or less and a chamber depth CH of less than 400 microns.

7. The spray dispenser according to any one of the preceding claims, wherein: the actuator is a button or a trigger; the container, the valve body, the valve stem, the nozzle, and the actuator comprise plastic; or both of the above cases.

8. A spray dispenser, comprising: a container configured to contain a composition and a compressed gas propellant; a supply passage in fluid communication with the container; an actuator operatively connected to the valve manifold; and a nozzle in fluid communication with the supply passage and configured to atomize the composition, the nozzle comprising: Substantially cup-shaped nozzle insert having an outer surface, a cavity extending along a longitudinal axis L, and an end face; A plurality of generally radial grooves provided in the end face; A swirl chamber, said swirl chamber being adjacent to said end face and having a chamber depth CH and a chamber diameter CD along said nozzle longitudinal axis L, and wherein said swirl chamber is arranged substantially concentrically with said cavity and is in fluid communication with said groove, said swirl chamber defining a volume, and wherein said volume of said swirl chamber is 0.095 mm 3 to 0.135 mm 3 ; An orifice having an orifice diameter OD and an orifice depth OH along the nozzle longitudinal axis NL, and being disposed substantially concentrically with and in fluid communication with the swirl chamber; A nozzle body for receiving and holding the nozzle insert, the nozzle body being in fluid communication with a supply passage for receiving the liquid to be atomized and including an insert support having an end surface; and A plurality of generally radial vanes substantially defined by the end surface and the grooves, the plurality of vanes being in fluid communication with the supply passage and having a depth VH.

9. The spray dispenser according to claim 8, wherein: The container includes a liquid composition and a compressed gas propellant; and The composition is an air or fabric freshening composition.

10. The spray dispenser according to any one of claims 8 or 9, wherein the flow rate of the composition discharged from the nozzle is in the range of about 1.3 g / s to about 1.9 g / s.

11. The spray dispenser according to any one of claims 8 to 10, wherein the minimum Dv90 particle size is in the range of about 60 microns to about 90 microns.

12. The spray dispenser according to any one of claims 8 to 11, wherein the initial pressure in the container is less than 1100 kPa at 21 °C.

13. The spray dispenser according to any one of claims 8 to 12, wherein: The actuator is a button or a trigger; The container, the valve body, the valve stem, the nozzle and the actuator comprise plastic; or Both of the above cases.

14. A spray dispenser, comprising: A container configured to hold a composition and a compressed gas propellant; A supply passage in fluid communication with the container; An actuator operatively connected to the valve manifold; And a nozzle in fluid communication with the supply passage and configured to atomize the composition, the nozzle comprising: Substantially cup-shaped nozzle insert having an outer surface, a cavity extending along a nozzle longitudinal axis NL, and an end face; A plurality of generally radial vanes provided in the end face; A swirl chamber adjacent to the end face and having a chamber depth CH and a chamber diameter CD along the longitudinal axis NL, and wherein the swirl chamber is disposed substantially concentrically with the cavity and in fluid communication with the grooves; An orifice having an orifice diameter OD and an orifice depth OH along the nozzle longitudinal axis NL, and being disposed substantially concentrically with and in fluid communication with the swirl chamber; A nozzle body for receiving and holding the nozzle insert, the nozzle body being in fluid communication with a supply passage for receiving the liquid to be atomized and including an insert support having an end surface; and A plurality of substantially radial vanes, the plurality of substantially radial vanes being substantially defined by the end surface and the grooves, the plurality of vanes being in fluid communication with the supply channel and having a radial vane depth VH wherein the chamber diameter CD decreases from adjacent the radial vanes to the discharge orifice, and wherein the chamber diameter CD is less than or equal to 800 microns.

15. The spray dispenser according to claim 14, wherein: the radial vane depth VH is less than the chamber depth CH; the container comprises a liquid air or fabric freshening composition and a compressed gas propellant; or both of the above cases.

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