WO1997034954A1 - Water-borne aerosol coating composition - Google Patents
Water-borne aerosol coating composition Download PDFInfo
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- WO1997034954A1 WO1997034954A1 PCT/US1997/004653 US9704653W WO9734954A1 WO 1997034954 A1 WO1997034954 A1 WO 1997034954A1 US 9704653 W US9704653 W US 9704653W WO 9734954 A1 WO9734954 A1 WO 9734954A1
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- aerosol
- water
- composition according
- particulates
- formulation
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/02—Emulsion paints including aerosols
- C09D5/021—Aerosols
Definitions
- Water-borne aerosol coatings also known as water-soluble, water- based or water-reducible aerosol coatings, have been known for many years.
- the principal advantage of these products is a lowering of flammability, toxicity, and air pollution potential.
- U.S. Patent No. 4,265,797, Suk describes the use ofan acrylic resin in emulsion form.
- U.S. Patent No. 4,420,575, Rapaport describes the use of a combination of a monomer modified alkyd resin and an emulsion polymer latex.
- U.S. Patent 4,450,253, Suk describes the use water-solubilized, oil- modified, film forming polymers, further described as a drying oil-modified ester polymer, which is rendered water soluble by neutralization with a volatile base.
- U.S. Patent 4,482,662, Rapaport describes the use of a water-soluble, monomer-modified alkyd resin having a low molecular weight, less than about 10,000.
- 4,518,734, Brouillette describes the use of a water reducible resin, further described as being rendered water soluble by neutralization of acidic or basic sites thereon, which render said resin dispersable in molecular or near-molecular dimensions, resulting in a single liquid phase.
- U.S. Patent No. 4,578,415, Learner describes the use ofan ammonium or amine salt of a drying oil-modified copolymer of an alkyl acrylate and a alkyl methacrylate.
- an aqueous, aerosol coating composition has a formulation including a colloidal dispersion of water- insoluble resin particulates having a film-forming composition dispersed in water with an aerosol propellant.
- Coalescing solvents are included in the formulations to induce coalescence and film- formation of the particulates upon dehydration of the formulation.
- Aqueous polyurethane dispersions of the present invention are significantly different from emulsion polymer lattices such as those described by Suk 4,265,797, and Rapaport 4,420,575, above.
- Polyurethane dispersions of the present invention differ in their colloidal and mo ⁇ hological characteristics from emulsion polymer lattices, as described in the technical literature, for example Aqueous Polyurethanes - Polymer Colloids; R. Satguru et al., Journal of Coatings Technology, Volume 66, No. 830, March 1994, pp 47-55 which is inco ⁇ orated by reference herein.
- the emulsion polymers are composed of monomers of acrylic acids and esters and vinyl monomers.
- the polyurethane resin is made by the reaction ofa diisocyanate and a diol or polyol, and optionally, one or more additional monomers and oligomers such as vinyl chlorides and acrylics.
- a polyurethane dispersion differs from a water soluble alkyd of the type described in U.S. Patent 4,450,253, Suk and U.S. Patent 4,482,662, Rapaport, in that the alkyd, after neutralization with an amine, becomes a solution of molecules with a molecular weight between 2,000 and 10,000.
- a polyurethane dispersion is a dispersion of particles, 25-75 nanometers in diameter, ofa high molecular weight, 125,000-250,000, polyurethane resin. There is no solubility ofthe polyurethane resin in water.
- the alkyd resin forms a film by the evaporation of water, any cosolvents present and the solubilizing amine, and then a crosslinking ofthe resin.
- the polyurethane dispersion forms a film by the evaporation of water, and the coalescence ofthe particles of resin. This coalescence is aided by coalescing solvents which lower the glass transition temperature ofthe resin so that particles will deform and fuse. The force for this deformation is created by capillaries full of water which are formed in the spaces between the close packed spheres. These forces compress the packing of particles.
- the coatings formed by a polyurethane dispersion have superior properties to those formed by any ofthe resins in the above cited patents. Specifically, they have superior chemical and water resistance, corrosion resistance, abrasion resistance and weather resistance; all properties which are significant to users of aerosol coatings.
- Particularly preferred dispersions of water insoluble resin particulates dispersed in aqueous aerosol coating described herein consists of a water dispersion of (1) a high molecular weight polyurethane resin, (2) a water soluble propellant particularly dimethyl ether, (3) one or more coalescing solvents, (4) a thickener for sag control, (5) one or more surfactants to reduce the surface tension ofthe mixture, thereby promoting surface wetting and reducing droplet size in the wet spray, and (6) other additives as may be required for improving resistance to corrosive atmosphere, ultraviolet radiation and abrasion resistance.
- the use of certain additives may require the inclusion of a defoamer.
- Polyurethane dispersions according to the present invention are suitable for use as wood or metal coatings and typically have molecular weights from 125,000 to 250,000, and particle size distribution much broader than emulsion polymer lattices.
- Polyurethane dispersions suitable for producing aerosol products of this type are made, for example, by K . Quinn & Co., Zeneca Resins, Inc., and Miles, Inc.
- the amount of polyurethane resin in the aerosol formulation will typically range from 8.0 to 20.0% by weight, depending on whether the coating is clear or pigmented.
- Dimethyl ether the water soluble propellant, will general comprise from about 10 to 50% by weight, preferably from 20% to 35% ofthe total contents ofthe aerosol formulation.
- Coalescing solvents which are necessary for good film formation, are in the composition at about 15% to 40% ofthe resin solids.
- coalescing solvents are glycol ethers, such as diethylene glycol mono methyl ether and diethylene glycol mono butyl ether, sold under the trademarks methyl and butyl CarbitolTM, butyl CellosolveTM, and TexanolTM. N-methyl pyrolidone and other typical coalescing solvents are described in the technical literature.
- Coalescence can also be enhanced by the inco ⁇ oration of 1-7% by weight, preferably 3-6%, on dispersion resin solids, of a non-ionic surfactant such as an ethoxylated nonylphenol or an ethoxylated octylphenol.
- a chemical plasticizer such as ethyl hexyl phthalate, can be used for this pu ⁇ ose.
- the preferred thickeners for sag control are the non-ionic, ethylene- oxide based urethane block copolymers, ofthe associative type which produces hydrogen bonding with the coalescing resin particulates as the applied aqueous aerosol dehydrates in coating.
- the thickener will generally comprise about 0.50% to 3.0%, preferably from about 1 to 2% ofthe formulation.
- a surfactant to reduce the surface tension ofthe mixture is desirable to reduce the spray droplet size and promote surface wetting.
- Such surfactant may be a fluorochemical compound at 0.04% to 0.20%, preferably 0.05 to 0.15%. on coating resin solids, or other surface active compound capable of reducing the surface tension ofthe coating.
- Acrylic emulsions suitable for this pu ⁇ ose are made by KJ. Quinn & Co., Zeneca Resins, Inc. S.C. Johnson, and Rohm & Haas Co, Such a combination would range from 10% to 90% acrylic resin, most commonly 15% to 45% acrylic resin on total resin solids.
- dispersions of intertwined acrylic and polyurethane polymers in water can be employed in the aerosol coating compositions ofthe present invention.
- Such intertwined polymer aqueous dispersions are described in the journal, Paints and Coatings Industry, October 1996, pp 80- 82, by Steven J. Burks. These dispersions are commercially marketed for example by Air Products & Chemicals Inc. of Allentown, Pennsylvania under the tradename HYBRIDURTM in Grade 570 and by ZENECA RESINS Inc. under the tradename NEO-REZTM Grade 9699.
- the formulations ofthe present invention may contain colored pigments, and inert pigments to provide various colors, and gloss control. Such pigments may be inco ⁇ orated into the product by the use of commercially available compatible pigment dispersions or direct inco ⁇ oration into the formula by the use of well known dispersion equipment and methods.
- the product mixture was fed to filling equipment and dispensed into aerosol cans which also charged each can with the dimethyl ether propellant.
Abstract
An aqueous, aerosol coating composition has a formulation including a colloidal dispersion of water-insoluble resin particulates having a film-forming composition dispersed in water with an aerosol propellant. Coalescing solvents are included in the formulations to induce coalescence and film-formation of the particulates upon dehydration of the formulation. The uniqueness of this present invention is amplified by high molecular weight polyurethane dispersion in water, to formulate aqueous aerosol coating compositions which produce coatings with exceptional physical characteristics.
Description
WATER-BORNE AEROSOL COATING COMPOSITION
Background of the Invention
Water-borne aerosol coatings, also known as water-soluble, water- based or water-reducible aerosol coatings, have been known for many years. The principal advantage of these products is a lowering of flammability, toxicity, and air pollution potential.
U.S. Patent No. 4,265,797, Suk, describes the use ofan acrylic resin in emulsion form. U.S. Patent No. 4,420,575, Rapaport, describes the use of a combination of a monomer modified alkyd resin and an emulsion polymer latex. U.S. Patent 4,450,253, Suk, describes the use water-solubilized, oil- modified, film forming polymers, further described as a drying oil-modified ester polymer, which is rendered water soluble by neutralization with a volatile
base. U.S. Patent 4,482,662, Rapaport, describes the use of a water-soluble, monomer-modified alkyd resin having a low molecular weight, less than about 10,000. U.S. Patent No. 4,518,734, Brouillette, describes the use of a water reducible resin, further described as being rendered water soluble by neutralization of acidic or basic sites thereon, which render said resin dispersable in molecular or near-molecular dimensions, resulting in a single liquid phase. U.S. Patent No. 4,578,415, Learner, describes the use ofan ammonium or amine salt of a drying oil-modified copolymer of an alkyl acrylate and a alkyl methacrylate.
Summary of the Invention
In accordance with the present invention, an aqueous, aerosol coating composition has a formulation including a colloidal dispersion of water- insoluble resin particulates having a film-forming composition dispersed in water with an aerosol propellant. Coalescing solvents are included in the formulations to induce coalescence and film- formation of the particulates upon dehydration of the formulation.
The uniqueness of this present invention is emplified by high molecular weight polyurethane dispersion in water, to formulate aqueous aerosol coating compositions which produce coatings with exceptional physical characteristics.
Detailed Description of Preferred Embodiments
Aqueous polyurethane dispersions of the present invention are significantly different from emulsion polymer lattices such as those described by Suk 4,265,797, and Rapaport 4,420,575, above. Polyurethane dispersions of the present invention differ in their colloidal and moφhological characteristics from emulsion polymer lattices, as described in the technical literature, for example Aqueous Polyurethanes - Polymer Colloids; R. Satguru et al., Journal of Coatings Technology, Volume 66, No. 830, March 1994, pp 47-55 which is incoφorated by reference herein. There are also chemical differences between the acrylic and vinyl emulsion polymers described in Suk, and Rapaport, and the polyurethane dispersion in water according to the present invention. The emulsion polymers are composed of monomers of acrylic acids and esters and vinyl monomers. The polyurethane resin is made by the reaction ofa diisocyanate and a diol or polyol, and optionally, one or more additional monomers and oligomers such as vinyl chlorides and acrylics.
Preparation of aqueous polyurethane dispersions to produce coatings and suitable for use in the aerosol formulations in accordance with the present invention are described for example in United States Patent No. 3,479,310 and 5,023,294 which are incoφorated by a reference for description of numerous aqueous polyurethane dispersions.
A polyurethane dispersion differs from a water soluble alkyd of the type described in U.S. Patent 4,450,253, Suk and U.S. Patent 4,482,662, Rapaport,
in that the alkyd, after neutralization with an amine, becomes a solution of molecules with a molecular weight between 2,000 and 10,000. A polyurethane dispersion, on the other hand, is a dispersion of particles, 25-75 nanometers in diameter, ofa high molecular weight, 125,000-250,000, polyurethane resin. There is no solubility ofthe polyurethane resin in water.
The alkyd resin forms a film by the evaporation of water, any cosolvents present and the solubilizing amine, and then a crosslinking ofthe resin. The polyurethane dispersion forms a film by the evaporation of water, and the coalescence ofthe particles of resin. This coalescence is aided by coalescing solvents which lower the glass transition temperature ofthe resin so that particles will deform and fuse. The force for this deformation is created by capillaries full of water which are formed in the spaces between the close packed spheres. These forces compress the packing of particles.
The coatings formed by a polyurethane dispersion have superior properties to those formed by any ofthe resins in the above cited patents. Specifically, they have superior chemical and water resistance, corrosion resistance, abrasion resistance and weather resistance; all properties which are significant to users of aerosol coatings.
Particularly preferred dispersions of water insoluble resin particulates dispersed in aqueous aerosol coating described herein consists of a water dispersion of (1) a high molecular weight polyurethane resin, (2) a water
soluble propellant particularly dimethyl ether, (3) one or more coalescing solvents, (4) a thickener for sag control, (5) one or more surfactants to reduce the surface tension ofthe mixture, thereby promoting surface wetting and reducing droplet size in the wet spray, and (6) other additives as may be required for improving resistance to corrosive atmosphere, ultraviolet radiation and abrasion resistance. The use of certain additives may require the inclusion of a defoamer.
Polyurethane dispersions according to the present invention are suitable for use as wood or metal coatings and typically have molecular weights from 125,000 to 250,000, and particle size distribution much broader than emulsion polymer lattices. Polyurethane dispersions suitable for producing aerosol products of this type are made, for example, by K . Quinn & Co., Zeneca Resins, Inc., and Miles, Inc. The amount of polyurethane resin in the aerosol formulation will typically range from 8.0 to 20.0% by weight, depending on whether the coating is clear or pigmented.
Dimethyl ether, the water soluble propellant, will general comprise from about 10 to 50% by weight, preferably from 20% to 35% ofthe total contents ofthe aerosol formulation.
Coalescing solvents, which are necessary for good film formation, are in the composition at about 15% to 40% ofthe resin solids. Typically coalescing solvents are glycol ethers, such as diethylene glycol mono methyl
ether and diethylene glycol mono butyl ether, sold under the trademarks methyl and butyl Carbitol™, butyl Cellosolve™, and Texanol™. N-methyl pyrolidone and other typical coalescing solvents are described in the technical literature. Coalescence can also be enhanced by the incoφoration of 1-7% by weight, preferably 3-6%, on dispersion resin solids, of a non-ionic surfactant such as an ethoxylated nonylphenol or an ethoxylated octylphenol. Similarly, a chemical plasticizer, such as ethyl hexyl phthalate, can be used for this puφose.
The preferred thickeners for sag control are the non-ionic, ethylene- oxide based urethane block copolymers, ofthe associative type which produces hydrogen bonding with the coalescing resin particulates as the applied aqueous aerosol dehydrates in coating. The thickener will generally comprise about 0.50% to 3.0%, preferably from about 1 to 2% ofthe formulation.
A surfactant to reduce the surface tension ofthe mixture is desirable to reduce the spray droplet size and promote surface wetting. Such surfactant may be a fluorochemical compound at 0.04% to 0.20%, preferably 0.05 to 0.15%. on coating resin solids, or other surface active compound capable of reducing the surface tension ofthe coating.
The use of an acrylic emulsion, in combination with the polyurethane dispersion is a suitable means of increasing hardness and gloss and reducing
cost. Acrylic emulsions suitable for this puφose are made by KJ. Quinn & Co., Zeneca Resins, Inc. S.C. Johnson, and Rohm & Haas Co, Such a combination would range from 10% to 90% acrylic resin, most commonly 15% to 45% acrylic resin on total resin solids.
Additionally, dispersions of intertwined acrylic and polyurethane polymers in water can be employed in the aerosol coating compositions ofthe present invention. Such intertwined polymer aqueous dispersions are described in the journal, Paints and Coatings Industry, October 1996, pp 80- 82, by Steven J. Burks. These dispersions are commercially marketed for example by Air Products & Chemicals Inc. of Allentown, Pennsylvania under the tradename HYBRIDUR™ in Grade 570 and by ZENECA RESINS Inc. under the tradename NEO-REZ™ Grade 9699.
The formulations ofthe present invention may contain colored pigments, and inert pigments to provide various colors, and gloss control. Such pigments may be incoφorated into the product by the use of commercially available compatible pigment dispersions or direct incoφoration into the formula by the use of well known dispersion equipment and methods.
This invention is illustrated by the following Examples which do not limit the scope ofthe claimed invention.
Example 1
WATER-BORNE CLEAR POLYURETHANE AEROSOL COATING
FORMULATION
Component % bv Weight
Diethylene gylcol mono methyl ether 3.62
Diethylene glycol mono butyl ether 0.86
N-methyl pyrolidone 2.18
Associative thickener ( 1 ) 1.03 Hindered amine light stabilizer (2) 0.34
Ultraviolet absorber (3) 0.34
Adhesion promoter (4) 0.52
Fluorochemical surfactant (5) 0.17
Abrasion resistance additive (6) 0.13 Water 43.99
Polyurethane resin (7) 15.96
Triethylamine 0.86
Dimethyl ether 30.00
100.00
(1) Rohm & Haas RM825
(2) Ciba-Geigy Coφ. Tinuvin 292
(3) Ciba-Geigy Coφ, Tinuvin 1130
(4) Dow Corning Coφ. Z6040 (5) 3M Cθφ. FC120
(6) Byk-Chemie Byk 301
(7) KJ. Quinn Co. QW-26 (37wt. % polyurethane solids in water)
The following procedure was used to prepare the foregoing formulation of Example 1 :
1. Into a mixing container equipped with a mixer for continuous agitation, the components were added in the following order: a. coalescing solvent(s); b. thickener; c. hindered amine light stabilizer; d. ultra violet absorber; e. adhesion promoter; f. surfactant; g. abrasion resistance additive; (optional);
A suitable length of mixing time was allowed between each addition, to insure complete incoφorate ofthe previous ingredient.
2. In a separate container, the water was added to all ingredients in Step 1.
3. Into a container large enough to hold the entire batch, and equipped with a mixer for continuous mixing, a. The polyurethane dispersion was added, followed by b. The mixture from Step 2, and the resulting mixture was mixed to uniformity.
4. The product mixture was fed to filling equipment and dispensed into aerosol cans which also charged each can with the dimethyl ether propellant.
The foregoing procedure was also employed to produce the colored formulations in Examples 2, 3 and 4 with the exception that the color dispersion was mixed with the water and the polyurethane dispersion prior to the final mixture.
Example 2 WATER-BORNE WHITE POLYURETHANE AEROSOL COATING
Component % bv Weight Diethylene glycol mono methyl ether 2.83
Diethylene glycol mono butyl ether 0.67
N-methylpyrolidone 1.68
Associative thickener (1) 0.81
Hindered amine light stabilizer (2) 0.26 Ultraviolet absorber (3) 0.26
Adhesion promoter (4) 0.40
Fluorochemical surfactant( 5) 0.13
Abrasion resistance additive (6) 0.09
Deionized water 34.37 Polyurethane resin (7) 12.47
Triethylamine 0.67
White pigment dispersion (8) 15.36
Dimethyl ether 30.00
100.00
(1) Rohm & Haas RM825
(2) Ciba-Geigy Coφ. Tinuvin 292
(3) Ciba-Geigy Coφ. Tinuvin 1130
(4) Dow Corning Coφ. Z6040 (5) 3M Coφ. FCI 20
(6) Byk-Chemie Byk 301
(7) KJ. Quinn Co, QW-26
(8) Daniel Products Coφ, CW 5003
Example 3 WATER-BORNE BLACK POLYURETHANE AEROSOL COATING
Component % bv Weight
Diethylene glycol mono methyl ether 3.38
Diethylene glycol mono butyl ether 0.85
N-methylpyrolidone 2.03
RM825 (1) 0.98 Tinuvin 292 (2) 0.32
Tinuvin 1130 (3) 0.32
Z6040 (4) 0.49
FCI 20 (5) 0.13
Byk 301 (6) 0.11 Deionized water 41.47
Polyurethane resin (7) 15.04
Triethylamine 0.81
Black pigment dispersion (8) 4.07
Dimethyl ether 30.00
100.00
( 1 ) Rohm & Haas associative thickener
(2) Ciba-Geigy Coφ. hindered amine light stabilizer
(3) Ciba-Geigy Coφ. ultraviolet absorber
(4) Dow Corning Coφ. adhesion promoter
(5) 3M Coφ, fluorochemical surfactant
(6) Byk-Chemie abrasion resistance additive
(7) KJ. Quinn Co, QW-26 (8) Daniel Products Coφ., CW 5317
Example 4 WATER-BORNE YELLOW POLYURETHANE AEROSOL COATING
Component % bv Weight Diethylene glycol mono methyl ether 6.09
N-methylpyrolidone 1.69
RM825 (1) 0.81
Tinuvin 1130 (2) 0.26
Tinuvin 292 (3) 0.26 Z6040 (4) 0.41
FC120 (5) 0.09
Byk 301 (6) 0.09
Deionized water 28.42
Polyurethane resin (7) 12.52 Triethylamine 0.68
CW 5566 yellow dispersion (8) 12.45
CW 5611 red iron oxide dispersion (8) 0.04
CW 5003 white dispersion (8) 6.19
Dimethyl ether 30.00
100.00
(1) Rohm & Haas associative thickener
(2) Ciba-Geigy Coφ. hindered amine light stabilizer
(3) Ciba-Geigy Coφ. ultraviolet absorber
(4) Dow Coming Coφ. adhesion promoter
(5) 3M Coφ. fluorochemical surfactant
(6) Byk-Chemie abrasion resistance additive
(7) K J. Quinn Co.
(8) Daniel Products Coφ.
When laboratory tested using American Society for Testing and Materials test procedures, when appropriate, the polyurethane coating produced the following results by the foregoing formulations in Examples 1-4:
ASTM Method Results Hardness, D968 40 Adhesion, D3359 (1) Unprimed cold rolled steel,
(2) primer and (3) intercoat - no failure on any ofthe above.
QUV Accelerated Weathering Test, D4587 335 hours total exposure. Test cycle: 8 hours ultra-violet exposure at 60°C. followed by 4 hours condensation at 50°. Percent gloss loss, 5%.
Abrasion Resistance, D968 2.6 liters per mil
Flexibility, D522 Passes 1/8" bend
Impact Resistance Direct, 160 in. lbs. Reverse, 160 in. lbs.
Chemical Resistance: Mineral Spirits: No Effect
2 hours under a watch glass Lubricating Oil: No Effect
Xylol: No Effect
Ethyl Alcohol: Slight Softening
Isopropyl Alcohol: Slight Softening
Methyl Ethyl Ketone: Slight Softening
Water: Slight Softening
None ofthe prior art water-based coatings are capable of producing comparably high test results in all categories.
While preferred embodiments ofthe present invention are shown and described, it is envisioned that those skilled in the art may devise various modifications and equivalents without departing from the spirit and scope of the appended claims.
Claims
1. An aqueous, aerosol coating composition having a formulation CHARACTERIZED BY comprising: a) water; b) a colloidal dispersion of water insoluble resin particulates comprising a film forming composition dispersed in the water; and c) aerosol propellant.
2. An aerosol composition according to claim 1 further CHARACTERIZED BY comprising: coalescing solvent effective to induce coalescence and film formation of said particulates upon dehydration of the formulation.
3. An aerosol composition according to claim 2, CHARACTERIZED IN THAT said coalescing solvent comprises at least one of glycol ether and n-methyl pyrolidone.
4. An aerosol composition according to claim 1, CHARACTERIZED IN THAT said particulates have a particle size within a range of approximately 25 to 75 nm.
5. An aerosol composition according to claim 1, CHARACTERIZED IN THAT said particulates have a composition comprising polyurethane.
6. An aerosol composition according to claim 1 , CHARACTERIZED IN THAT said particulates have a composition comprising polyurethane having a molecular weight in a range of approximately 125,000 to 250,000.
7. An aerosol composition according to claim 1, CHARACTERIZED IN THAT said particulates have a composition comprising polyurethane, and said formulation further comprises acrylic emulsion.
8. An aerosol composition according to claim 1, CHARACTERIZED IN THAT said propellant comprises dimethyl ether.
9. An aqueous, aerosol coating composition according to claim 1, CHARACTERIZED IN THAT said components have the following proportions: Components % bv Weight a) water; 30-60 b) a colloidal dispersion of water-insoluble 8-20 particulates comprising a film-forming composition dispersed in the water; and c) aerosol propellant. 10-50
10. An aerosol composition according to claim 9, further CHARACTERIZED BY comprising: coalescing solvent effective to induce coalescence and film formation of said particulates upon dehydration ofthe formulation.
11. An aerosol composition according to claim 10, CHARACTERIZED IN THAT said coalescing solvent comprises at least one ofa glycol ether and n-methyl pyrolidone.
12. An aerosol composition according to claim 9, CHARACTERIZED IN THAT said particulates have a particle size within a range of approximately 25 to 75 nm.
13. An aerosol composition according to claim 9, CHARACTERIZED IN THAT said particulates have a composition comprising polyurethane resin.
14. An aerosol composition according to claim 9, CHARACTERIZED IN THAT said propellant comprises dimethyl ether.
15. An aerosol composition according to claim 5, further CHARACTERIZED BY comprising: acrylic polymer intertwined in polymer of said polyurethane resin.
16. An aqueous aerosol coating formulation CHARACTERIZED BY comprising: a water dispersion of particulates having a composition including a high molecular weight polyurethane resin; a water soluble propellant; and one or more coalescing solvents effective to induce coalescence and film formation of said particulates upon dehydration of the formulation.
17. An aerosol composition according to claim 16, further CHARACTERIZED BY comprising: acrylic polymer intertwined in polymer of said polyurethane resin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62102396A | 1996-03-22 | 1996-03-22 | |
| US08/621,023 | 1996-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997034954A1 true WO1997034954A1 (en) | 1997-09-25 |
Family
ID=24488415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1997/004653 WO1997034954A1 (en) | 1996-03-22 | 1997-03-21 | Water-borne aerosol coating composition |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO1997034954A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8404134B2 (en) * | 2008-02-22 | 2013-03-26 | Fujitsu Limited | Method for manufacturing electrode foil |
| US10160864B2 (en) | 2014-06-24 | 2018-12-25 | 3M Innovative Properties Company | Polyurethane aerosol compositions, articles, and related methods |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4265797A (en) * | 1978-12-06 | 1981-05-05 | Conn Chem Group, Limited | Aerosol water-based paint composition |
| US4482662A (en) * | 1982-07-26 | 1984-11-13 | Plasti-Kote Company, Inc. | Water-soluble aerosol paint compositions |
| JPS59226063A (en) * | 1983-06-03 | 1984-12-19 | Asahi Pen:Kk | Aerosol paint stock solution composition forming flexible coating film |
| US5023294A (en) * | 1988-07-07 | 1991-06-11 | Presidenza Del Consiglio Dei Ministri | Aqueous dispersions of urethane-acrylic polymers and the use thereof as paints |
-
1997
- 1997-03-21 WO PCT/US1997/004653 patent/WO1997034954A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4265797A (en) * | 1978-12-06 | 1981-05-05 | Conn Chem Group, Limited | Aerosol water-based paint composition |
| US4482662A (en) * | 1982-07-26 | 1984-11-13 | Plasti-Kote Company, Inc. | Water-soluble aerosol paint compositions |
| JPS59226063A (en) * | 1983-06-03 | 1984-12-19 | Asahi Pen:Kk | Aerosol paint stock solution composition forming flexible coating film |
| US5023294A (en) * | 1988-07-07 | 1991-06-11 | Presidenza Del Consiglio Dei Ministri | Aqueous dispersions of urethane-acrylic polymers and the use thereof as paints |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8404134B2 (en) * | 2008-02-22 | 2013-03-26 | Fujitsu Limited | Method for manufacturing electrode foil |
| US10160864B2 (en) | 2014-06-24 | 2018-12-25 | 3M Innovative Properties Company | Polyurethane aerosol compositions, articles, and related methods |
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