Lightweight sprayable texture composition

Abstract

The present disclosure is directed to a composition comprising a lightweight particulate filler, a binder and a modified urea rheology modifier, where the composition, upon cure, is not retroreflective; an aerosol dispensing system for applying such a composition and coating layer deposited therefrom are also disclosed.

Description

LIGHTWEIGHT SPRAYABLE TEXTURE COMPOSITIONCROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims priority to U.S. Provisional Application No. 63 / 606,032, filed on December 4, 2023, and entitled “Lightweight Sprayable Texture Composition”.FIELD

[0002] This disclosure relates to lightweight coating compositions that provide texture and an aerosol dispensing system for applying such compositions.BACKGROUND

[0003] Aerosol cans are utilized to apply a variety of texture compositions onto a wall surface. Pigment- saturated textured coatings require vigorous agitation, which is perceived as extensive (Imin) by the consumer. Poor agitation causes valve clogging of the aerosol, limiting application control and delivery completion. Lightweight compositions particularly for spray application are therefore desired.SUMMARY

[0004] The present disclosure is directed to a composition comprising: a binder; a lightweight particulate filler having a density of 2.0 g / mL or lower and a modified urea additive wherein a coating layer deposited from the composition, upon coalescence, is not retroreflective. A coating layer deposited therefrom is also within the present scope.

[0005] The present disclosure is further directed to an aerosol dispensing system comprising a container and a spray applicator. The container holds a propellant and any of the coating compositions of the present disclosure.BRIEF DESCRIPTION OF THE DRAWING

[0006] FIG. 1 is an example of an aerosol dispensing system.DETAILED DESCRIPTION OF THE DRAWING

[0007] The present disclosure is directed to a composition comprising: a binder; a lightweight particulate filler having a density of 2.0 g / mL or lower, and a modified urea additive. The composition, when deposited as a coating layer and coalesced, is not retroreflective. These compositions are sometimes referred to herein as the “texture material”, “texture composition”, “lightweight composition” or like terms.

[0008] The present compositions comprise a binder, which is sometimes referred to interchangeably herein as a film forming component. “Film-forming” means that the composition, upon hardening and / or curing, can form a continuous film on a surface. A filmforming component may include, for example, a film-forming resin and a crosslinker therefore. Film-forming resin, film former, and base may all be used interchangeably herein. Crosslinker, curing agent and hardener may all be used interchangeably herein.

[0009] The film-forming component can be thermoset or thermoplastic. Any filmforming resin can be used according to the present disclosure including, but not limited to, an epoxy resin, an acrylic resin, a polysiloxane resin, a polyurethane resin, a polyurea resin, a polyvinyl resin, a phenolic resin, a urea- formaldehyde resin, a polyimide resin, a melamine resin, a polyester resin and a cyanate resin; one skilled in the art will be able to choose a suitable crosslinker based upon the reactivity of the resin. Such a resin can react with itself, that is, undergo a self-crosslinking reaction, or can react with a crosslinker to form a film. Such reactions may occur at ambient or elevated temperature. “Ambient” refers to room temperature, typically 20°C+ / -5°C. “Coalesce” and like terms refers to the process by which a coating composition hardens to form a coating. “Coalescing” and like terms may include the coating composition being cured (that is, hardening by being crosslinked, either by itself or via a crosslinking agent) or the coating composition being dried. “Coalesced”, “cured”, “dried”, “hardened” and variants thereof may be used interchangeably herein to refer to a coating or coating layer that has been deposited from the coating compositions described herein wherein at least a portion of the polymerizable and / or crosslinkable components undergo a reaction. Particularly suitable are those film-forming resins that self-crosslink or undergo cure or coalescence at ambient conditions. Examples of film-forming resins that undergo coalescence at ambient conditions include an acrylic emulsion such as an acrylic latex, a vinyl acetate-ethylene copolymer emulsion, a vinyl acetate-acrylic copolymer emulsion, a styrene acrylic emulsion, a vinyl acetate-vinyl versatate copolymer emulsion and the like. Combinations of any of these can also be used.

[0010] The present compositions comprise a lightweight particulate filler having a density of 2.0 g / mL or lower. For example, the density can be 2.0 g / mL or lower, such as l.Og / mL or lower, such as 0.8g / mL or lower, such as 0.5 g / mL or lower, or from 0.02 to 1.0g / mL or from 0.02 to 0.6g / mL. Density measurements provided herein are as reported by the manufacturer.

[0011] Suitable lightweight particulate filler according to the present disclosure often fall within two categories - microspheres and amorphous particles. The specific gravity of the particulate filler can range from 0.1 to 0.7. For example, the specific gravity of the microspheres can range from 0.1 to 0.7 and include, for example, polystyrene foam, microspheres of polyacrylates and polyolefins, and silica microspheres having particle sizes ranging from 5 to 100 microns and a specific gravity of 0.25 (ECCOSPHERES). Other examples include alumina / silica microspheres having particle sizes in the range of 5 to 300 microns and a specific gravity of 0.7 (FILLITE), aluminum silicate microspheres having a specific gravity of from approximately 0.45 to 0.7 (Z-LIGHTR), and calcium carbonate coated polyvinylidene copolymer microspheres having a specific gravity of 0.13 (DU ALITE 6001 AE). Examples of amorphous particles include fly ash and perlite. A particularly suitable lightweight particulate filler according to the present disclosure is a hollow glass sphere, such as those commercially available from 3M or Nouryon in their EXPANCEL line. Specific gravity is determined by multiplying the density of constituents in the formula by the mass of the constituents in the formula.

[0012] Any particle size can be used according to the present disclosure. It may be appropriate to select a particle size that allows the composition to be applied through a spray nozzle. For example, the average particle size may be size from 15 to 125 microns, such as 30 to 100 microns, such as 40 to 80 microns, such as 50 to 60 microns. Average particle size refers to the average particle size of the particles prior to any expansion they may undergo in the composition or upon application. Average particle size provided herein is as reported by the manufacturer.

[0013] As noted above, the particles in the present disclosure do not impart retroreflectivity to a coalesced coating layer deposited from the composition. Retroreflectivity refers to the ability of a surface to reflect light back to its source with minimal scattering. This property can be measured using a handheld device that reports retroreflectivity in candelas per lux per square meter (cd / lx / m2). Retroreflectivity is often a desired property in certain applications, such as road markings, and can be achieved by use of glass spheres. Unlike applications in which retroreflectivity is desired, the lightweight filler used according to thepresent disclosure becomes covered by the binder, which is typically opaque, upon cure and does not exhibit rctrorcflcctivity. “Not rctrorcflcctivc” as used herein means that the cured coating layer deposited from the composition has a retroreflectivity measurement of 5 cd / lx / m2or lower, such as 2 or lower, or 1 or lower.

[0014] The coating compositions further comprise a modified urea rheology modifier. A rheology modifier will be understood as an additive that adjusts the viscosity of a composition. A “modified urea rheology modifier” refers to a rheology modifier that comprises a modified urea; such rheology modifiers work by forming a multi-dimensional, such as three dimensional network or rheology structure with the composition. A “modified urea” is a urea to which one or more organic groups have been attached. Suitable modified urea rheology modifiers are MIN-U- GEL commercially available from Active Mineral International, RHEOBYK-7420ET and RHEOBYK-7410ET commercially available from Byk Additives, R972 Fumed Silica commercially available from Evonik, and Bentone SD-2 commercially available from Elementis. An appropriate rheology modifier can be selected by the user depending on various factors, including the components in the formulation, whether the formulation is solvent based (i.e. carrier comprises >50 wt % solvent) or water based (i.e. earner comprises 50 wt% or greater water), and the like.

[0015] It has been surprisingly discovered that the use of a modified urea rheology modifier in the present compositions inhibits the lightweight particulate filler from settling to the bottom and from collecting at the top of the composition; it also allows for increased dispersion of the lightweight particulate filler in the composition upon shaking. The present compositions, therefore, provide a product that can be applied with less agitation than similar products without lightweight particles. In addition, the mass ejected can be greater; that is, more of the product can be delivered from the can.

[0016] A user might desire to extend the “open time” of the composition after depositing a coating layer on the surface of the substrate to be coated. The coating compositions of the present disclosure may therefore further comprise an open-time extender. “Open time” generally refers to the time during which the composition remains at least partially uncured or uncoalesced. This might be desired, for example, when a “knocked-down” finish is desired. It will be appreciated that the compositions of the present disclosure may be deposited as drops or “splatter” that impart a textured surface; in some cases, the user may choose to spread and / orflatten these drops / splatters so as to create a smooth or flattened texture on the top of the splatter. This smoothing is referred to in the art as knock-down. The composition should be at least partially uncoalesced at the time of knock-down; otherwise, it could not be smoothed. An “open-time extender” refers to an additive that slows down the rate of coalescence. Suitable open-time extenders are commercially available from Syensqo as RHODOLINE.

[0017] The coating compositions can further comprise one or more additives typically used in the ail. Examples include carrier liquid, additional filler, coupling agent, defoamer, coiTosion inhibitor, surfactant, and / or biocide. As used herein, the term “carrier liquid” refers to a water, organic solvents, or some combination thereof. As used herein, the term “additional filler” refers to any filler or pigment material known in the art, such as titanium dioxide, limestone, mica, clay, silica, calcium carbonate, potassium silicate, talc or similar materials or a mixture thereof; these filler / pigment materials may be used in “addition” to the lightweight filler.

[0018] The present disclosure is further directed to an aerosol dispensing system comprising a container and a spray applicator. The container holds the coating compositions as described above. A propellant is also within the container. Propellant refers to any material that can be used to propel the composition from the aerosol spray applicator and are often hydrocarbons; suitable examples include compressed gas, dimethyl ether, carbon dioxide, nitrogen, propane, butane, isobutene, difluoroethane, and tetrafluoroethane. FIG. 1 schematically illustrates an exemplary aerosol dispensing system 20 that may be used to spray the present lightweight texture compositions, although any device can be used. The aerosol dispensing system 20 is adapted to spray droplets of dispensed material 22 onto a target surface 24. The example target surface 24 has a textured portion 26 and an un-textured portion 28. Accordingly, in the example use of the dispensing system 20 depicted in FIG. 1, the dispensing system 20 is being used to form a coating on the untextured portion 28 having a desired texture pattern that substantially matches a pre-existing texture pattern of the textured portion 26.

[0019] FIG. 1 further illustrates that the dispensing system 20 includes a container 30 defining a chamber 32 in which stored material 34 and pressurized material 36 are contained. The stored material 34 may be a mixture of the present composition and propellant material in liquid phase, while the pressurized material may be propellant material in gas phase.

[0020] FIG. 1 further illustrates that the aerosol dispensing system 20 includes a conduit 40 defining a conduit passageway 42. The conduit 40 is supported by the container 30 such thatthe conduit passageway 42 defines a conduit inlet 44 arranged within the chamber 32 and a conduit outlet 46 arranged outside of the chamber 32. The conduit 40 is formed by an inlet tube 50, a valve housing 52 and an actuator structure 54. The conduit passageway 42 extends through the inlet tube 50, the valve housing 52, and the actuator structure 54 such that the valve housing 52 is arranged between the conduit inlet 44 and the actuator structure 54 and the actuator structure 54 is arranged between the valve housing 52 and the conduit outlet 46.

[0021] Arranged within valve housing 52 is a valve system 60. A first flow adjustment system 70 having a first adjustment member 72 is arranged at an intermediate location along the conduit passageway 42 between the valve system 60 and the conduit outlet 46. A second flow adjustment system 80 having a second adjustment member 82 is arranged in the conduit passageway 42 to form at least a portion of the conduit outlet 46.

[0022] The valve system 60 operates in a closed configuration and an open configuration. In the closed configuration, the valve system 60 substantially prevents flow of fluid along the conduit passageway 42. In the open configuration, the valve system 60 allows flow of fluid along the conduit passageway 42. The valve system 60 is normally in the closed configuration. The valve system 60 engages the actuator member structure 54 and is placed into the open configuration by applying deliberate manual force on the actuator structure 54 towards the container 30.

[0023] The first flow adjustment system 70 is supported by the actuator structure 54 between the valve system 60 and the second adjustment system 80 such that manual operation of the first adjustment member 72 affects the flow of fluid material along the conduit passageway 42. In particular, the second adjustment system 80 functions as a flow restrictor, where operation of the first adjustment member 72 variably reduces the size of the conduit passageway 42 such that a pressure of the fluid material upstream of the first flow adjustment system 70 is relatively higher than the pressure of the fluid material downstream of the first flow adjustment system 70.

[0024] The first adjustment system 70 can be operable in a plurality or continuum of configurations ranging between a fully open configuration and a terminal configuration. The fully open configuration typically represents no restriction of the cross-sectional area of the conduit passageway 42 and may be numerically represented as 100 percent open (i.e., the cross- sectional area defined by the first adjustment system is substantially the same as the cross- sectional area of the conduit passageway upstream of the first adjustment system). The terminalconfiguration typically represents the greatest amount of restriction of the cross-sectional area of the conduit passageway 42 and may be numerically represented as a fraction of the cross- sectional area of the conduit passageway, such as 12 percent open (i.e., the cross-sectional area defined by the first adjustment system is approximately 12 percent of the cross-sectional area of the conduit passageway upstream of the first adjustment system).

[0025] The second adjustment system 80 is supported by the actuator structure 54 downstream of the second adjustment system 80. Manual operation of the second adjustment member 82 affects the flow of fluid material flowing out of the conduit passageway 42 through the conduit outlet 46. In particular, the second adjustment system 80 may function as a variable orifice, where operation of the second adjustment member 72 variably reduces the size of the conduit outlet 46 relative to the size of the conduit passageway 42 upstream of the second adjustment system 80.

[0026] To operate the aerosol dispensing system 20, the container 30 may be grasped such that the finger can depress the actuator structure 54. The conduit outlet or outlet opening 46 may initially be aimed at a test surface and the actuator structure 54 may be depressed to place the valve system 60 in the open configuration such that the pressurized material 36 forces some of the stored material 34 out of the container 30, e.g., and onto the test surface to form a test texture pattern. The test texture pattern may be compared to the pre-existing texture pattern defined by the textured portion 26 of the target surface 24. If the test texture pattern does not match the pre-existing texture pattern, one or both of the first and second adjustment systems 70 and 80 may be adjusted to alter the spray pattern of the droplets of dispensed material 22. The process of spraying a test pattern and comparing it to the pre-existing pattern and adjusting the first and second adjustment members 72 and 82 may be repeated until the dispensed material forms a desired texture pattern that substantially matches the pre-existing texture pattern. Maintaining the first and second adjustment systems 70 and 80 as they were when the test texture pattern matched the pre-existing texture pattern, the aerosol dispensing system 20 may then be arranged such that the conduit outlet or outlet opening 46 is aimed at the un-textured portion 28 of the target surface 24. The actuator structure 54 may again be depressed to place the valve system 60 in the open configuration such that the pressurized material 36 forces the stored material 34 out of the container 30 and onto the un-textured portion 28 of the target surface toform the desired texture pattern. A similar process can be done when coating an entire substrate or portion thereof without the need or desire to match an existing texture.

[0027] As used herein, any numerical range recited herein is intended to include all subranges subsumed therein. Singular encompasses plural and vice versa. For example, although reference is made herein to “a” binder, “a” lightweight particle, “a” modified urea rheology modifier, “an” open-time extender, and the like, one or more of each of these and any other components can be used. Also, as used herein, the term “polymer” refers to prepolymers, oligomers and both homopolymers and copolymers; the prefix “poly” refers to two or more. When ranges are given, any endpoints of those ranges and / or numbers within those ranges can be combined with the scope of the present disclosure. “Including”, “such as”, “for example” and like terms means “including / such as / for example but not limited to”. The terms “acrylic” and “acrylate” are used interchangeably (unless to do so would alter the intended meaning) and include acrylic acids, anhydrides, and derivatives thereof, lower alkyl-substituted acrylic acids, e.g., C1-C2 substituted acrylic acids, such as methacrylic acid, methacrylic acid, etc., and their C1-C6 alkyl esters and hydroxyalkyl esters, unless clearly indicated otherwise.

[0028] Aspects of the disclosure include:

[0029] Aspect 1. A composition comprising: a binder, a lightweight particulate filler having a density of 2.0 g / mL or lower, and a modified urea rheology modifier, wherein a coating layer deposited from the composition, upon coalescence, is not retroreflective.

[0030] Aspect 2. The composition of aspect 1, wherein the composition further comprises an open-time extender.

[0031] Aspect 3. The composition of any preceding aspect, wherein the lightweight particulate filler has a density of 1.0 g / mL or lower.

[0032] Aspect 4. The composition of any preceding aspect, wherein the lightweight particulate filler has a density of 0.8 g / mL or lower.

[0033] Aspect 5. The composition of any preceding aspect, wherein the lightweight particulate filler has a density of 0.5 g / mL or lower.

[0034] Aspect 6. The composition of any preceding aspect, wherein the lightweight particulate filler has a density of 0.02 to 1.0 g / mL.

[0035] Aspect 7. The composition of any preceding aspect, wherein the lightweight particulate filler has a density of 0.02 to 0.6 g / mL.

[0036] Aspect 8. The composition of any preceding aspect, wherein the lightweight particulate filler has a specific gravity of 0.1 to 0.7.

[0037] Aspect 9. The composition of any preceding aspect, wherein the composition comprises a volume percent from 10 to 50 of the lightweight particulate filler, where volume percent is based on the total volume of the composition.

[0038] Aspect 10. The composition of any preceding aspect, wherein the composition comprises a volume percent from 18 to 41 of the lightweight particulate filler, where volume percent is based on the total volume of the composition.

[0039] Aspect 11. The composition of any preceding aspect, wherein the composition comprises a volume percent from 1 to 30 of the binder, where volume percent is based on the total volume of the composition.

[0040] Aspect 12. The composition of any preceding aspect, wherein the composition comprises a volume percent from 5 to 20 of the binder, where volume percent is based on the total volume of the composition.

[0041] Aspect 13. The composition of any preceding aspect, wherein the composition comprises a volume percent from 5 to 10 of the binder, where volume percent is based on the total volume of the composition.

[0042] Aspect 14. The composition of any preceding aspect, wherein the composition comprises a volume percent from 1 to 10 of the modified urea additive, where volume percent is based on the total volume of the composition.

[0043] Aspect 15. The composition of any preceding aspect, wherein the composition comprises a volume percent from 2 to 5 of the modified urea additive, where volume percent is based on the total volume of the composition.

[0044] Aspect 16. The composition of any preceding aspect, wherein the composition comprises a volume percent of 0.75 + / - 0.20 of the open-time extender, where volume percent is based on the total volume of the composition.

[0045] Aspect 17. The composition of any preceding aspect, wherein the composition comprises a weight percent from 1 to 10 of the lightweight particulate filler, where weight percent is based on the total weight of the composition.

[0046] Aspect 18. The composition of any preceding aspect, wherein the composition comprises a weight percent from 2 to 8 of the lightweight particulate filler, where weight percent is based on the total weight of the composition.

[0047] Aspect 19. The composition of any preceding aspect, wherein the composition comprises a weight percent from 1 to 10 of the modified urea additive, where weight percent is based on the total weight of the composition.

[0048] Aspect 20. The composition of any preceding aspect, wherein the composition comprises a weight percent from 1 to 5 of the modified urea additive, where weight percent is based on the total weight of the composition.

[0049] Aspect 21. The composition of any preceding aspect, wherein the composition comprises a weight percent from 1 to 10 of the binder, where weight percent is based on the total weight of the composition.

[0050] Aspect 22. The composition of any preceding aspect, wherein the composition comprises a weight percent from 5 to 9 of the lightweight particulate filler, where weight percent is based on the total weight of the composition.

[0051] Aspect 23. The composition of any preceding aspect, wherein the composition comprises a weight percent from 0 to 4 of the open-time extender, where weight percent is based on the total weight of the composition.

[0052] Aspect 24. The composition of any preceding aspect, wherein the composition comprises a weight percent of less than 1.0 of the open-time extender, where weight percent is based on the total weight of the composition.

[0053] Aspect 25. The composition of any preceding aspect, wherein the composition comprises a weight percent of 0.76 + / - 0.20 of the open-time extender, where weight percent is based on the total weight of the composition.

[0054] Aspect 26. The composition of any preceding aspect, wherein the lightweight particulate filler comprises hollow glass spheres.

[0055] Aspect 27. The composition of any preceding aspect, wherein the lightweight particulate filler comprises hollow polymeric spheres.

[0056] Aspect 28. The composition of any preceding aspect, wherein the lightweight particulate filler comprises hollow spheres having an average particle size of 15 to 125 microns.

[0057] Aspect 29. The composition of any preceding aspect, wherein the lightweight particulate filler comprises hollow spheres having an average particle size of 30 to 100 microns.

[0058] Aspect 30. The composition of any preceding aspect, wherein the lightweight particulate filler comprises hollow spheres having an average particle size of 40 to 80 microns.

[0059] Aspect 31. The composition of any preceding aspect, wherein the lightweight particulate filler comprises hollow spheres having an average particle size of 50 to 60 microns.

[0060] Aspect 32. The composition of any preceding aspect, wherein the lightweight particulate filler comprises amorphous particles.

[0061] Aspect 33. The composition of any preceding aspect, further comprising an additional filler.

[0062] Aspect 34. The composition of aspect 31, wherein the additional filler comprises titanium dioxide.

[0063] Aspect 35. The composition of aspect 33-34, wherein the volume ratio of lightweight particulate filler to additional filler is 1:0.1 to 10.

[0064] Aspect 36. The composition of aspect 33-34, wherein the volume ratio of lightweight particulate filler to additional filler is 1:0.5 to 8.

[0065] Aspect 37. The composition of any preceding aspect, wherein the modified urea additive comprises a polyurea.

[0066] Aspect 38. The composition of any preceding aspect, wherein the modified urea additive comprises a urea-modified polyurethane.

[0067] Aspect 39. The composition of any preceding aspect, wherein the lightweight particulate filler to binder volume ratio is 0.05 to 1:1.

[0068] Aspect 40. The composition of any preceding aspect, wherein the lightweight particulate filler to binder volume ratio is 0.05 to 0.2:1.

[0069] Aspect 41. The composition of any preceding aspect, wherein the low sheer of the composition as measured using a DV2T Touch Screen Viscometer with spindle #4 is less than 10,000 cPs.

[0070] Aspect 42. The composition of any preceding aspect, further comprising one or more of a carrier liquid, a coupling agent, a defoamer, a corrosion inhibitor, a surfactant, or a biocide.

[0071] Aspect 43. A coating layer deposited from the coating composition of any preceding aspect, wherein the coating layer, when coalesced, has a retroreflectivity of 5 cd / lx / m2or lower.

[0072] Aspect 44. A coating layer deposited from the coating composition of aspects 1- 42, wherein the coating layer, when coalesced, has a retroreflectivity of 2 cd / lx / m2or lower.

[0073] Aspect 45. A coating layer deposited from the coating composition of aspects 1- 42, wherein the coating layer, when coalesced, has a retroreflectivity of 1 cd / lx / m2or lower.

[0074] Aspect 46. An aerosol dispensing system comprising: a container comprising the composition of any preceding aspect; a spray applicator; and a propellant.

[0075] Aspect 47. The dispensing system of aspect 46, wherein the aerosol dispensing system weighs at least 100 grams less than a similar dispensing system that does not use a lightweight filler.

[0076] Aspect 48. The dispensing system of aspects 46-47, wherein the aerosol dispensing system weighs at least 150 grams less than a similar dispensing system that does not use a lightweight filler.

[0077] Aspect 49. The dispensing system of aspects 46-48, wherein the aerosol dispensing system dispenses the composition by depressing the spray applicator.EXAMPLES

[0078] The following examples are intended to illustrate the disclosure and should not be construed as limiting the disclosure in any way.Example 1

[0079] Formulations according to the present disclosure were made using KI glass bubbles from 3M (“lightweight”). Comparative examples were made using the same ingredients and amounts but with calcium carbonate filler instead of the lightweight filler (“Control”).

[0080] Compositions were added to aerosol cans and charged with propellant. Pressurized cans were allowed to cool to a temperature of 60-75°C to minimize internal headspace pressure during the propellant release.

[0081] The pressurized aerosol cans with the samples were each shaken by an operator for either 20 seconds or 60 seconds (Shake Time) as indicated in the table below. The shaken can was propped on a 5 ft. tripod located 3 ft. from a spray target. The operator depressed the pressurized aerosol can actuator to allow the compositions to be released onto the spray target. The operator marked the top of the spray pattern and marked 3 inches below to account for pressure loss. Actuation was initiated again until the top of the spray pattern reached the 3-inch mark as previously marked; a stopwatch was used to determine the time from actuation to reaching the 3-inch mark.

[0082] The pressurized aerosol can was shaken for an additional 5 seconds, and the above steps repeated. The number of shakes (Shakes) reflects how many times the operator shook and sprayed until the contents of the pressurized aerosol can were evacuated.

[0083] When the lightweight particulate filler was used, a 10 % increase of mass was observed evacuated from the aerosol can with less shakes required to achieve suitable dispersion of the compositions. Additionally, less shake time was required of the lightweight versus control cans.Example 2

[0084] The compositions of Example 1, with and without an open-time extender (RHODOLINE- OTE600), were added to aerosol cans and charged with propellant. Then, the samples were allowed to sit for at least three days.

[0085] The pressurized cans were shaken by an operator. The operator depressed the pressurized aerosol can actuator to allow compositions to be released onto a spray target. The operator sprayed the compositions as a fine and coarse orange peel pattern. An “orange peelpattern” refers to a textured application resulting from spraying the compositions at different concentrations resulting in varying levels of texture including fine and coarse textures.

[0086] Then the operator knocked down a first half of the orange peel pattern after 1.5 minutes and a second half of the orange peel pattern after 3.0 minutes. The samples with the open time extender allowed for knock-down after both 1.5 and 3.0 minutes.

Claims

What is claimed is:

1. A composition comprising: a binder; a lightweight particulate filler having a density of 2.0 g / mL or lower, and a modified urea rheology modifier; wherein a coating layer deposited from the composition, upon coalescence, is not retroreflective.

2. The composition of claim 1, further comprising an open-time extender.

3. The composition of any preceding claim, wherein the specific gravity of the lightweight particulate filler is 0.1 to 0.7.

4. The composition of any preceding claim, wherein the composition comprises a volume percent from 10 to 50, of the lightweight particulate filler, and / or a volume percent from 1 to 30, of the binder, and / or a volume percent from 1 to 10, of the modified urea additive, and / or a volume percent from 0 to 4, of the open-time extender, where volume percent is based on the total volume of the composition.

5. The composition of any preceding claim, wherein the composition comprises a weight percent from 1 to 10 of the lightweight particulate filler, and / or a weight percent from 1 to 10 of the modified urea additive, and / or a weight percent from 1 to 10 of the binder, and / or a weight percent of 0.76 + / - 0.20 open-time extender, if used, where weight percent is based on the total weight of the composition.

6. The composition of any preceding claim, wherein the lightweight particulate filler comprises hollow glass spheres, hollow polymeric spheres, and / or amorphous particles.

7. The composition of any preceding claim, wherein the lightweight particular filler comprises hollow spheres having an average particle size from 15 to 125 microns.

8. The composition of any preceding claim, wherein the composition further comprises an additional filler.

9. The composition of claim 8, wherein the volume ratio of lightweight particulate filler to additional filler is 1: 0.1 to 10.

10. The composition of any preceding claim, wherein the modified urea additive comprises a polyurea and / or a urea-modified polyurethane.

11. The composition of any preceding claim, wherein the lightweight particulate filler to binder volume ratio is 0.05 to 1:1.

12. The composition of any preceding claim, wherein the low sheer of the composition as measured using a DV2T Touch Screen Viscometer with spindle #4 is less than 10,000 cPs.

13. The composition of any preceding claim further comprising one or more of a carrier liquid, a coupling agent, a defoamer, a corrosion inhibitor, a surfactant, or a biocide.

14. A coating layer deposited from the composition of any preceding claim, wherein the coating layer, when coalesced, has a retroreflectivity of 5 cd / lx / m2or lower.

15. An aerosol dispensing system comprising: a container comprising the composition of any preceding claim; a spray applicator; and a propellant.

16. The dispensing system of claim 15, wherein the aerosol dispensing system weighs at least 100 grams less than a similar dispensing system that does not use a lightweight filler.

17. The dispensing system of claim 15 or 16, wherein the aerosol dispensing system dispenses the composition by depressing the spray applicator.

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