CN101384375B - Non-pneumatically asissted spray-coating of a surface with a viscous aqueous architectural coating composition - Google Patents
Non-pneumatically asissted spray-coating of a surface with a viscous aqueous architectural coating composition Download PDFInfo
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- CN101384375B CN101384375B CN2007800052305A CN200780005230A CN101384375B CN 101384375 B CN101384375 B CN 101384375B CN 2007800052305 A CN2007800052305 A CN 2007800052305A CN 200780005230 A CN200780005230 A CN 200780005230A CN 101384375 B CN101384375 B CN 101384375B
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
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- CVOFKRWYWCSDMA-UHFFFAOYSA-N 2-chloro-n-(2,6-diethylphenyl)-n-(methoxymethyl)acetamide;2,6-dinitro-n,n-dipropyl-4-(trifluoromethyl)aniline Chemical compound CCC1=CC=CC(CC)=C1N(COC)C(=O)CCl.CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O CVOFKRWYWCSDMA-UHFFFAOYSA-N 0.000 description 1
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- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
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- 239000011449 brick Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
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- SEVNKWFHTNVOLD-UHFFFAOYSA-L copper;3-(4-ethylcyclohexyl)propanoate;3-(3-ethylcyclopentyl)propanoate Chemical compound [Cu+2].CCC1CCC(CCC([O-])=O)C1.CCC1CCC(CCC([O-])=O)CC1 SEVNKWFHTNVOLD-UHFFFAOYSA-L 0.000 description 1
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- 239000002480 mineral oil Substances 0.000 description 1
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- 238000000465 moulding Methods 0.000 description 1
- WQDGUYZIAJKLAB-UHFFFAOYSA-N octan-2-yl nitrite Chemical compound CCCCCCC(C)ON=O WQDGUYZIAJKLAB-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
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- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
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- 229920001223 polyethylene glycol Polymers 0.000 description 1
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- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 1
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- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
- B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
- B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
- B05B1/3436—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/40—Filters located upstream of the spraying outlets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
- B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
- B05B9/0811—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container
- B05B9/0816—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container the air supplying means being a manually actuated air pump
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/01—Spray pistols, discharge devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
- B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
- B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
- B05B9/0855—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven
- B05B9/0861—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven the motor being electric
Abstract
A process, apparatus and coating composition for the non-pneumatically assisted (eg airless) spray-coating of a surface with a viscous aqueous architectural coating composition (eg. a paint) suitable for hiding marks on surfaces which composition exhibits non-Newtonian flow and contains a binder polymer and over 30wt% of solid ingredients (especially those chosen from thickeners, opacifiers, pigments and extenders) in which the composition is expelled from an orifice in a nozzle under a pressure of 2.5 to 5bar generateable by hand-pump. A suitable composition has a Brookfield viscosity of at least 0.5 Pa.sec and preferably not exceeding 50 Pa.sec. and contains a predominantly associative thickener for spraying through an oblate or circular orifice or alternatively has an apparent extensional viscosity of from 0.05 to 0.5Pa.sec. Preferably, the nozzle has means to impart a transverse force to the composition so that it enters the orifice with a swirling motion.
Description
The present invention relates to the method and apparatus with the auxiliary sprayed surface of viscous aqueous architectural coating compositions non-air, described composition is the composition that is suitable for covering lip-deep vestige, and described method can be used the pressure treatment non newtonian that is no more than 5 bar and flow.In fact, " the auxiliary spraying of non-air (non-pneumatically assisted spray-coating) " means usually, the formation of spraying is not to assist by injecting air, but use other gas sometimes such as carbon dioxide replaces air, therefore in brief, " airfree (airless) " in this manual will be in order to expression, and wherein spraying forms and can't help air or the auxiliary spraying of any other gas.The invention still further relates to the coating composition that in described method and apparatus, uses.
The meaning that pressure reaches 5 bar is that this is---to be called as to inaccuracy by " hand pump "---pressure of acquisition from simple compressor hand-manipulated usually.Also might use electric pump to produce such pressure.
Architectural coating compositions almost always paints, and therefore in brief, will use " paint (paint) " to refer to architectural coating compositions in general manner in this manual continually.Be suitable for covering vestige major part paint since their pseudoplastic behavior character to show non newtonian mobile, this makes them experience the non-linear reduction of viscosity when being subjected to high shear.Although carried out the spraying (although being under high pressure) in year surplus in the of 70, still do not had simple or reliable method to predict how the non-linear reduction of this viscosity will influence the character of resulting spraying.
Surface seen in architectural paints is designed to be applied to build or as the being seen surface of wing, for example wall, ceiling, window frame, door and doorframe, radiator and tailor-made furniture.Some paint are specifically designed the outer surface and the building land (for example garden and garden) on every side that are applied to build and go up being seen surface.Such surface is stone, brick or concrete normally, and expectation paint can cover lip-deep vestige preferably.Paint is intended under environment temperature and humidity by amateurish or professional painter's The field.The European environment temperature that the scene process of whitewashing runs into generally is from 5 ℃ to 45 ℃.For being applicable to the paint that covers vestige preferably, they should comprise enough opacifiers, pigment and/or replenishers, so that the total solids content of paint be 30wt% (based on the gross weight of painting before the drying) at least, and preferably, solids content is from 40wt% to 70wt%, and most preferred scope is that 43wt% is to 55wt%." replenishers " are the solid particles of clay and/or chalk for example, and it is added into architectural coating compositions, in order to make pigment and/or opacifier particle spaced apart, thereby increase their painted and/or light-shading effect.Provide in " Introduction toPaint Chemistry " third edition of the G P ATurner that being described in more detail in of they published by Chapman and Hall of London in 1967, incorporate its content in this article into for referencial use.
Application can use brush or roller to carry out, if perhaps the painter is professional, can be undertaken by (randomly, air is auxiliary) spraying of using the pressure generation that surpasses 130 bar.Large-area spraying is than whitewashing fast 5 to 10 times with brush, but for amateurish personnel's application, that is, and the painter of " doing it yourself ", the high-tension apparatus of use is too expensive and too dangerous.
Cheap low pressure sprayer unit---it uses hand pump can be pressurized to about 3 bar---is widely used for spraying organic solvent based liquid for example wood stain, fungicide and pesticide by amateurish personnel (especially gardener), described liquid comprises low content or zero content solid material and has negligible brookfield viscosity (Brookfield viscosities), this means the Newtonian flow of sening as an envoy to their performances their spraying easily.Use the trial---brookfield viscosity of described paint surpasses 0.5Pa.sec in the time of 22 ℃ and solids content is higher than 7wt%---of such device injection aqueous paint to produce the spraying of the near cylindrical of minor radius, it just exerts an influence at target surface small and about border circular areas.The small size in this zone will make the process of whitewashing very time-consuming.
The handbook of publishing in 2005 " Cuprinol introducing a major breakthrough inFence Treatments for 2005 " has been described commercial available device, and it uses the pressure that reaches 5 bar that produces by hand pump to spray the non newtonian architectural coating compositions.Architectural coating compositions is comprised in the reservoir, and it arrives the elongated slot that in nozzle form with delivering composition by nozzle by the pump pressurization, and composition is discharged from this slit with fan-shaped flat spraying.But, have been found that this device only can successfully be used for the architectural coating compositions that solids content is lower than about 12wt%, for other situation, this architectural coating compositions or can not from slit, discharge, or can not be as spendable spraying or injection and discharge.A possible reason of failure is when solids content is high, enters in the flowing of nozzle at paint, and too many energy is consumed in shears the fluid that closes on slot wall and the solid particle rotation that makes in the paint.Before how explanation can overcome this problem, the formation of describing some aqueous architecturals paint was helpful with the mode that they obtain its viscosity.
Aqueous architectural paint generally comprises the water emulsion that organic film forms binder polymer, the effect of this binder polymer at first is that the dry coating with composition is adhered to its applied surface, secondly is that for example pigment, dyestuff, opacifier, replenishers (extender) and biocide (biocides) are adhered in the dry coating for any other composition with composition.Binder polymer is the main cause of non-Newtonian flow.
Multiple conventional film forms binder polymer and can use in aqueous architectural paint, but those are the most normally used to be three kinds of broad types that obtain from ethylenically unsaturated monomers, and they generically are called " acrylic compounds ", " vinyl-based " or " phenylethylene "." acrylic compounds (acrylics) " normally the Arrcostab of at least two kinds of list-ethylenic unsaturated carboxylic acids copolymer (for example, the methyl esters of acrylic or methacrylic acid, ethyl ester, butyl ester or 2-Octyl Nitrite, methyl methacrylate/butyl acrylate copolymer for example), it randomly has some non-esterified acid (for example acrylic or methacrylic acid).The mono-vinyl ester that " vinyl-based (vinyls) " generally includes saturated carboxylic acid is at least a copolymer in vinylacetate and acrylic monomers or other mono-vinyl ester for example, other mono-vinyl ester for example, the vinyl esters that comprises the carboxylic acid of 10 to 12 carbon atoms, those as being sold with trade name " Versatate " by Resolution Europe BV of Rotterdam." phenylethylene (styrenics) " comprises styrene (or similarly mono vinyl aromatic monomer) together with the copolymer of copolymerisable monomer, described copolymerisable monomer is the Arrcostab of acrylic or methacrylic acid normally.Being described in more detail among the aforementioned Turner of suitable aqueous binder polymer provided.
Viscosity under the low shearing that architectural paints need have (namely, brookfield viscosity in the time of 22 ℃) be at least 0.5Pa.sec (Pascal. second), therefore, if they are that 0.02 to 0.05mm conventional thickness is applied to vertical surface with scope, the coating of using generally can be resisted " sagging (sagging) ", that is,, flow down from the surface with before losing its flowability at the free sufficiently dry of coating.Explanation in " sagging " space of a whole page 14 in " Handbook of Painting and Decorating Products " A H Beckly, that published in nineteen eighty-three by Granade of London, the content of the space of a whole page 14 is incorporated this paper into for referencial use.In aqueous paint, most of viscosity is given by comprising long-chain cellulose thickener long or medium chain usually, and these help non newtonian to flow very much.More detailed description to the thickener that is applicable to the aqueous architectural coating composition, in " The handbook of Coatings Additives " second volume the 4th chapter of being edited by L JCalbo, provided by E JSchaller and P R Sperry, introduce the content of chapter 2 in this article as a reference.
Schaller and Sperry explain, need thickener to regulate viscosity in aqueous latex paint, so that the multiple character of control paint comprises sagging, also comprise film forming and equalization.They have listed the several different methods that its medium viscosity can be increased, but conclusion is, thickener (they optionally are called " water-soluble polymer ") provides much effective and controllable adjustment method of viscosity.Schaller and Sperry continue to distinguish the two class thickeners that are called as " non-associative thickeners " and " associative thickeners ".Non-associative thickeners is water-soluble (or being water swellable at least) polymer, and it mainly is by the overlapping of their polymer chains and/or tangles and/or by them large volume space in the paint occupied to increase viscosity.These effects are promoted by molecular weight, hardness and the glacing flatness of their polymer chains.Associative thickeners also is water-soluble (or being water swellable at least) polymer.They have the hydrophobic grouping that chemistry connects, and described group can self-association be micella sample assemblage and can non-specificly absorb on all colloid surfaces of existence.This behavior is similar to the behavior of conventional surfactants.It produces temporary transient polymer chain network, and this has strengthened the brookfield viscosity of paint.
Up to the present, most important non-associative thickeners is long-chain, medium chain or short chain cellulose ether, and it is called as " cellulose family ", and it comprises straight and polymer backbone rigidity, makes cellulose family effective especially aspect the viscosity that increases water-based system.Chain length defines with the weight average molecular weight that derives from viscosimetric analysis.The example of cellulose family comprises hydroxyethylcellulose, sodium carboxymethylcellulose, methylcellulose, hydroxypropyl methylcellulose and ethylhydroxyethylcellulose.
Long-chain (for example molecular weight is greater than 250000Da) and medium chain (for example 100000 to 250000Da) cellulose family increases viscosity by chain entanglement, and chain entanglement can obtain high brookfield viscosity under low concentration.But, if the concentration of long-chain and medium chain cellulose family must be increased under high shear (it is necessary for the height film forming) acquisition high viscosity, they will suppress the atomizing of coating composition in spray process, cause excessive and inhomogeneous film forming and sagging.
Short chain cellulose family (for example, molecular weight is lower than 100000Da) mainly increases viscosity so their unlikely inhibition atomizings between spray phase by concentration affects (for example, volume occupies).But, need high concentration to obtain required brookfield viscosity.It is expensive using such high concentration, and they are obviously harmful to the water proofing property of dry coating, make it be subject to the attack of rain or water condensation.
The molecular weight of associative thickeners is low relatively, and they have overcome some shortcomings of cellulose family.The temporary transient network that they produce produces the brookfield viscosity that increases, and is suitable with the brookfield viscosity that obtains with the plain class of high molecular weight fibers.This allows them to be used the water proofing property of this not serious infringement dry coating with relatively little concentration.
Schaller and Sperry report, the associative thickeners of four kinds of main types has commercial use in water-based paint compositions.First kind of alkali soluble emulsion or " HASE " type that main type is hydrophobically modified.Commercial HASE type example possess hydrophilic property skeleton, it comprises for example salt of acrylic or methacrylic acid or maleic anhydride of unsaturated carboxylic acid polymerization or copolymerization or acid anhydrides.Hydrophilic segment for example ployalkylene glycol (for example polyethylene glycol) is connected to hydrophilic skeleton, and hydrophobic grouping is connected to hydrophilic segment again.In use, under neutrality or faintly acid pH, the solution of these HASE thickeners is added in the coating composition as free-pouring liquid.Subsequently, by rising pH to weak basic condition (such as 8 to 9) thus form carboxylate anion, cause that brookfield viscosity increases.
Second type associative thickeners is hydrophobically modified hydroxyalkyl (especially ethyl) cellulose family or " HMHEC " type, its preparation easily by the chain alkyl epoxides being joined in the hydroxy alkyl cellulose that is used as non-associative thickeners type.
The associative thickeners of the third type is block/condensation copolymers " HEUR " type, and it comprises hydrophily block and hydrophobicity block, ends at hydrophobic grouping usually.The hydrophily block can be by relative low-molecular-weight, and such as being lower than 10000Da, preferably, 3400 to 8000Da polyalkylene oxide (especially PEO) part provides.Hydrophily block and for example for example toluene di-isocyanate(TDI) condensation of vulcabond of hydrophobic formation urethanes.
The 4th type associative thickeners is the hydrophobically modified polyacrylamide type, and wherein hydrophobic grouping is impregnated in as the free-radical polymerized thing with the N-alkyl acrylamide.They are the most useful in acid coating composition.
The associative thickeners of the 5th kind of main type is introduced from the summary of Schaller and Sperry.This is hydrophobically modified ethyoxyl oxide urethanes alkali swelling emulsion or " HEURASE " type.This type combines the function of HASE and HEUR type.
Have been found that now, has high solids content and because thickener when producing its viscosity of significant quantity at the non newtonian architectural coating compositions, still there is the condition that allows useful non-air assistant spray composition, even use cheap sprayer unit when composition---operating under the enough low pressure that described device is using that simple and cheap hand pump is easy to generate---also like this when being sprayed, these hand pumps can be afforded and use safely by amateurish personnel.
Therefore, the invention provides with the viscous aqueous architectural coating compositions that is suitable for covering lip-deep vestige (for example paint) non-air auxiliary (for example, no air) method of sprayed surface, described compositions table reveals non--Newtonian flow and comprises binder polymer that (especially those are selected from thickener with other solid constituent, opacifier, the composition of pigment and replenishers), and described method is included under the pressure and discharges composition from the hole that forms nozzle, wherein: a) solids content of composition be composition total weight 30wt% at least (preferably, 35wt% is to 65wt%, and most preferably, 40wt% is to 53wt%), b) when when measuring for 22 ℃, the brookfield viscosity that composition has is 0.5Pa.sec at least, and preferably, be no more than 50Pa.sec, and most preferably, brookfield viscosity from 1 to 12Pa.sec, c) to comprise the gross weight based on composition be that 0.08wt% is to the thickener of 0.6wt% to composition, wherein surpassing 50wt% (based on the gross weight of thickener) is associative thickeners, d) hole has or oblate periphery, perhaps preferably has circular periphery, and e) composition was subjected to the pressure of from 2.5 to 5 bar before discharging from the hole.
Have been found that, main associative thickeners by above-mentioned amount comes thickening, give composition so apparent tensile viscosity: itself in addition under the pressure that is not higher than the pressure that can suitably produce by hand pump, also allowing effectively to spray, particularly is oval in the hole and when being preferably circle." oblateness " meaning has crooked periphery (comprising oval-shaped periphery), wherein periphery has the longest diameter, also have short diameter, but the shortest diameter is no less than longest diameter length half (preferably be not less than longest diameter length 4/5).Preferably, any minimization of loss thereby composition should comprise that the thickener that is no more than 0.4wt% makes the ability of pouring into (pouring ability) and at least the thickener of 0.1wt% make the risk minimization of forfeiture sag resistance.Preferably, thickener should comprise 60wt% to the associative thickeners of 80wt% (based on the gross weight of thickener), and all the other are non-associative thickeners.May have above 80wt% and the associative thickeners that reaches 100wt%, but this is expensive.The most preferable concentrations of associative thickeners is based on composition total weight from 0.1wt% to 0.3wt%.
Alternatively, the invention provides with the viscous aqueous architectural coating compositions that is suitable for covering lip-deep vestige (for example paint) non-air auxiliary (for example, no air) method of sprayed surface, described compositions table reveals non--Newtonian flow and comprises binder polymer that (especially those are selected from thickener with other solid constituent, opacifier, the composition of pigment and replenishers), and described method is included under the pressure and discharges composition from the hole that forms nozzle, wherein: a) solids content of composition be based on composition total weight 30wt% at least (preferably, 35wt% is to 65wt%, and most preferably, 40wt% is to 53wt%), b) when when measuring for 25 ℃, the apparent tensile viscosity that composition has is (preferably, from 0.15 to 0.35Pa.sec) from 0.05 to 0.5Pa.sec; With when when 22 ℃ are measured, brookfield viscosity is 0.5Pa.sec at least, preferably, is no more than 50Pa.sec, most preferably, brookfield viscosity is from 1 to 12Pa.sec, and c) composition before from the hole, discharging, be subjected to the pressure of from 2.5 to 5 bar.
Having been found that the composition of the apparent tensile viscosity of selecting to have above-mentioned scope, even under the pressure that can suitably produce by hand pump, allow effectively to spray, particularly is oblate in the hole or when being preferably circle.
For this purpose of description, compound non-newtonian fluid is the apparent tensile viscosity η of aqueous architectural coating composition for example
aBe defined as:
Wherein, σ is the surface tension of 25 ℃ of following coating compositions, δ d/ δ t is that foundation can be from Germany, Karlsruhe, the method of describing among the Haake CaBER1InstructionManual that Thermo Haake (International) obtains, the diameter d of the midpoint of the vertical hair tubule silk of composition is with respect to the speed that reduces of time t, and described capillary is to be disposed between two vertically opposite plates and plate forms when being drawn back fast at composition.Introduce the content of Haake CaBER 1InstructionManual herein as a reference." mid point " means and the equidistant point of plate." CaBER " expression " capillary break-up stretching rheometer (Capillary Break-up Extensional Rheometer) ".
For the employed method of this purpose of description comprises, it is between the plate of 6mm that paint is arranged in two vertically opposite diameters, and the space from start of plate is 3mm.Plate is vertically drawn back during 50ms rapidly subsequently, reaches 7 to 20mm interval, thereby produces the liquid capillary silk that connects two plates.The result who discharges under surface tension and the gravity is, silk attenuates and finally is divided into two independent droplets, and a droplet adheres to top plate, and another droplet adheres to following plate.In order to measure the purpose of δ d/ δ t, when using silk that laser micrometer carries out enough numbers and attenuating in the continuous measurement of spot diameter.Measure preferably frequency from 1 to 30kHz under, in from 0.1 to 1 second time period, carry out, by precise frequency and the time period of test selection at concrete composition, make error be intended to guarantee enough mid point diameter d mensuration, thereby make it possible to draw out reliable d with respect to the curve map of time t.Diameter greater than 700 μ m preferably is left in the basket, in order to minimize because the initial deformation that gravity produces, and at least when carrying out like this, curve map comprises the part of substantial linear.The gradient of this part is got makes δ d/ δ t.Should be noted that: between the plate separation period, with constant speed movable plate, and especially, should not exist because the buffering that any final deceleration causes.
Final distance between the option board is to produce such capillary silk: to such an extent as to its useful life long enough allows to carry out effective measurement of enough numbers, be used for measuring the purpose of δ d/ δ t.For example, approximately the final interval of 20mm (such as 19.8mm) is preferred for the composition of high brookfield viscosity, and the final distance of 14 to 15mm (such as 14.5mm) is preferred for medium brookfield viscosity, and approximately the final interval of 8mm (such as 7.9mm) is preferred for low brookfield viscosity.
For the non newtonian composition, the advantageous embodiment method is measured δ d/ δ t.Described method comprises measures δ d/ δ t as mentioned above, subsequently, plate is put back into their original position rapidly, subsequently, after plate is put back to original position, replication as quickly as possible.Must allow composition to have time enough (from 0.1 to 30 second usually, this depends on concrete composition) to recover enough structures in order to can form silk again.Subsequently, carry out enough other similar δ d/ δ t replications, to allow the making up δ d/ curve map of time of δ t reliably.This curve map has been found to produce the asymptotic value of δ d/ δ t, and this is more useful aspect prediction group compound spray characteristics.
If apparent tensile viscosity surpasses 0.5Pa.sec, then architectural coating compositions best, be discharged from spraying or big stream of liquid droplets, its produce fast from the vertical surface sagging or flow down cross thick coating, with the worst ground (for example, if apparent tensile viscosity surpasses 2Pa.sec), composition may not discharged at all.If apparent tensile viscosity is reduced to below the 0.05Pa.sec; architectural coating compositions will be discharged from as thin spraying; it can not apply vertical surface effectively, and it is easy to be sucked or be easy to having under the outdoor conditions of wind by blow-off direction by not protected painter (normally amateurish personnel).
For effective no sag coating, preferably, 50% injected paint should be injected for having the droplet of diameter range 150 to 300 μ m (most preferably 180 to 250 μ m) by volume.Preferably, be no more than the injected paint of 5% to 20% (preferred 8% to 15%) by volume should be injected for having the droplet that is lower than 100 μ m diameters, otherwise, have undesirable danger that spraying is inhaled into or is blown off.Further preferably, being no more than by volume, the injected paint of 5% to 20% (preferred 8% to 15%) should injectedly be the droplet with the diameter that is higher than 300 μ m.
As obtaining the preferred of suitable apparent tensile viscosity but inadequate condition, preferably, when being in upstream, hole (entrance, upstream) following time of high shear, the shear viscosity of paint under 25 ℃ should be reduced to 0.015 to 1.0Pa.sec (preferably, 0.02 to 0.12Pa.sec), wherein high shear means, is 10 such as shear rate
4/ second.Viscosity under such shear rate can be measured by the ICI cone and plate viscometer, as describing in ASTM Test D4827-88.
May influence other factors surface tension and the density thereof that yes paints of spraying validity.These two is all closely related with the complexity prescription for the manufacture of modern times paint, therefore, changes any one and all is not easy.In theory, surface tension (thereby with apparent tensile viscosity) can be lowered in paint by adding cleaning agent, but this will increase the sensitiveness of painting water.Therefore, capillary variation is seldom as actual selection.Most of building coating will have 20 to 60 (preferably, 23 to 45) N.10 in the time of 20 ℃
-3The surface tension of/m scope.
The density of paint is influenced strongly by the concentration of their a large amount of inorganic sunscreen such as rutile titanium dioxide (it is also as white pigments) or colored pigment or replenishers such as calcium carbonate or magnesium carbonate or clay.Pigment and replenishers concentration are carefully selected, and to provide the color with accurate tone, colourity or brightness, therefore, change their concentration just to regulating density also seldom as actual selection.In brief, under the situation of the unacceptable consequence that does not have opacity and color, density can not obviously be changed, and eyes are very responsive for change in color.Usually, for the composition that has greater than the 30wt% solids content, the density of aqueous paint from 1.1 to 1.6 kg/liter.
In the operation of the present invention, paint can be provided in the reservoir by manual compression machine pressurization, passes the outlet opening that the nozzle pump forms in the nozzle thereby will paint by flexible pipe, paints injected from described outlet opening.The periphery in hole is preferably circular, but can be oblate.Preferably, the hole longest diameter of (preferably, 0.7 to 1.3mm) that has from 0.5 to 2 and preferably from 0.2 to 1mm and 0.3 to 0.7mm axial length most preferably.
Also preferably, when paint passes nozzle, it is applied cross force (shearing), thereby twist paint stream makes it pass the hole with the motion of helical vortex basically, and this has increased the shearing force on the paint, and it is considered to help fluid atomizing again is the spraying of suitable size droplet." horizontal " means that to enter nozzle from it angled to total direction of transfer that it leaves by the hole with composition.
Cross force can be applied in by for example mode from the reaction force on surface, and described surface favours total flow direction that coating composition passes nozzle with certain angle (preferably, 25 ° to 65 °), that is to say, favours the longitudinal axis of nozzle.The surface that is fit to can be provided by one or more helical lands (rifling of similar rifle) that are arranged in the extension of upstream extending of nozzle.But, provide the preferred mode of suitable reaction force to comprise annulus, cut out therein a plurality of (preferably, 3 or 4) basically (that is, and tangential groove at least in part), described groove extends to week in it from the periphery of ring.The groove preferably inside radius of 0.5 to 1.5mm wide and ring and outer radius is preferably respectively from 4 to 6mm with from 5 to 7mm, and certainly, condition is that outer radius is bigger than inside radius.The ring of fluting preferably with the integrated manufacturing of nozzle, thereby nozzle and ring form the part of same black box, and this black box do not rotate, therefore, cross force auxiliary from the surface and without any fluid coupling.Preferably, paint is accepted in the part annular gap that the ring of fluting forms from the disk of pressurizing reservoir by the groove upstream, and described gap is communicated with the outer end of groove.
In case the hole is left in spraying, when it was advanced towards surface to be coated, it expanded to limit cone shape, therefore allowed to apply wideer band.100 to 150mm place in the distance hole, and the preferred maximum gauge of cone is from 100 to 250mm, becomes irregular and causes the risk of surperficial more inhomogeneous coating thereby minimize cone.
Also preferably, when paint makes it flow through filter when reservoir is sent to nozzle, in order to shear and broken any agglomerate, for example, the pigment that may in paint, exist or the agglomerate of replenishers.Preferred filter comprises the mesh with rectangular aperture, and the limit of described rectangular aperture is 0.8 to 1.5mm length.Paint preferably is transported to nozzle by the tandem compound of flexible hose and rigidity jet pipe from reservoir, and described combination is incorporated into be used to the trigger mechanism that stops and opening the paint conveying.A plurality of parts of conveying device all apply some to paint and shear when painting by them, and should shear the viscosity that can influence paint, therefore must consider this point in the design of whole sprayer unit.
The geometry of nozzle should be selected along with the intention transfer rate of composition.Have been found that coating composition under 0.3 to 1.3 liter/minute speed, and preferably, carried best under 0.5 to 1 liter/minute.Spraying stability can be by ambient temperature effect, and environment temperature can increase or reduce the apparent tensile viscosity of composition.Think that 0.6 to 0.9 liter/minute transfer rate is subjected to the influence of temperature change minimum.
Selecting the suitableeest jet size is simple thing.Suggestion is in when beginning, and the jet size that is in about mid point of preferable range should be selected, and subsequently, size can change with the pressure of hand pump and be changed possibly, so as research for any concrete paint, flow and how transfer rate changes with pressure.
Randomly, adopt by in the outlet opening upstream and the forced air-ventilating system in exit hole (being preferably cylindrical) come delivering composition, in order to the fluctuating of pressure is minimized, pressure rises and falls and may follow amateurish personnel that the manipulation of hand pump is taken place, and described amateurish personnel may become tired when pumping moves.Preferably, the forced air-ventilating system fluid transverse to by nozzle that should have is of a size of 0.5 to 3 (particularly, 1.3 to 2.7) mm and length is 0.2 to 4 (especially, 0.2 to 3) mm.
It is auxiliary (for example with the viscous aqueous architectural coating compositions non-air that is suitable for covering lip-deep vestige that the present invention also provides, no air) device of sprayed surface, described compositions table reveals non--Newtonian flow, and wherein said device comprises: a) reservoir that can pressurize, it comprises that architectural coating compositions (for example, paint), the 30wt% at least that the solids content that described composition has is based on composition total weight (preferably, 35wt% is to 65wt%, and most preferably, 40wt% is to 53wt%), and described composition comprises by weight (based on the gross weight of composition) from 0.08 to 0.6 (preferably, 0.1 to 0.4) thickener, wherein surpass 50wt% (preferably, at least 60wt%, most preferably, at least thickener (based on the gross weight of thickener) 80wt%) is associative thickeners, and the brookfield viscosity that composition has is 0.5Pa.sec at least, preferably, be no more than 50Pa.sec, and most preferably, brookfield viscosity is from 1 to 12Pa.sec, and b) nozzle that is communicated with reservoir, described nozzle ends at oblateness or circular outlet opening, c) compressor, it can be pressurised into composition 2.5 to 5 bar, and d) pressure relief valve, it is set to, when pressure reaches the value of 2.5 to 5.0 bar scopes, discharge the pressure of reservoir.
It is auxiliary (for example with the viscous aqueous architectural coating compositions non-air that is suitable for covering lip-deep vestige that the present invention provides alternatively, no air) device of sprayed surface, described compositions table reveals non--Newtonian flow, and wherein said device comprises: a) reservoir that can pressurize, it comprises that architectural coating compositions (for example, paint), the 30wt% at least that the solids content that described composition has is based on composition total weight (preferably, 35wt% is to 65wt%, and most preferably, 40wt% is to 53wt%), and described composition has 0.05 to 0.5Pa.sec apparent tensile viscosity and the brookfield viscosity of 0.5Pa.sec at least when 25 ℃ are measured, the b) nozzle that is communicated with reservoir, and described nozzle ends at outlet opening, c) compressor, it can be pressurised into composition 2.5 to 5 bar, and d) pressure relief valve, it is set to, when pressure reaches the value of 2.5 to 5.0 bar scopes, discharge the pressure of reservoir.
Although two said apparatus can use hand pump, if each device can use by low pressure family expenses compressor produce pressure---they can produce the pressure of 2.5 to 5 bar.Similarly, in appropriate circumstances, electric pump can be used to produce pressure.
The present invention further provides viscous aqueous architectural coating compositions, it shows non newtonian and flows, and be suitable for the pressure injection of 2.5 to 5 bar to the surface to cover described lip-deep vestige, the 30wt% at least that the solids content that described composition has is based on composition total weight (preferably, 35wt% is to 65wt%, and most preferably, 40wt% is to 53wt%), and described composition comprises by weight (based on the gross weight of composition) from 0.08 to 0.6 (preferably, 0.1 to 0.4) thickener, wherein surpass 50wt% (preferably, at least 60wt%, most preferably, 80wt% at least) thickener (based on the gross weight of thickener) is associative thickeners, and the brookfield viscosity that has of described composition is 0.5Pa.sec at least, preferably, be no more than 50Pa.sec, and most preferably, brookfield viscosity is to 12Pa.sec from 1.The present invention provides viscous aqueous architectural coating compositions alternatively, it shows non newtonian and flows, and be suitable for the pressure injection of 2.5 to 5 bar to the surface to cover described lip-deep vestige, described composition comprises binder polymer and other solid constituent, the 30wt% at least that the solids content that wherein said composition has is based on composition total weight (preferably, 35wt% is to 65wt%, and most preferably, 40wt% is to 53wt%), and described composition has 0.05 to 0.5Pa.sec apparent tensile viscosity when measuring for 25 ℃, at least 0.5Pa.sec, and preferably be no more than the brookfield viscosity of 50Pa.sec, and most preferably, for from 1 to 12Pa.sec brookfield viscosity.
The mensuration of brookfield viscosity
Brookfield viscosity uses Brookfield viscometer model HA to measure in the time of 22 ℃, and described viscosimeter provides as the Brookfield Engineering LaboratoriesIncorporated that is positioned at Massachusetts Middleboro.Brookfield viscometer mainly comprises the rotatable spindle (spindle) that has disk, and when measuring, disk is immersed in about its surperficial 10mm down in the coating composition.Composition should be provided in having the hydrostatic column of 100mm diameter at least, to avoid owing to the error that causes near chamber wall.
Measure for this purpose of description, select No. 3 the Bu Shi spindle, it is immersed in the composition and changes with No. 10 Bu Shi speed (Brookfield Speed) rotation at least three subsequently.Spindle is connected with torque measuring device, and described equipment is calibrated, and with directly or after the operation of the multiplier of Brookfield appointment, represents moment of torsion according to composition viscosity.
Surface tension test
Surface tension uses De Nuoy methods to measure at 20 ℃, and it uses the silk thread diameter to be 0.44mm and the ring diameter silk thread ring as 13mm.In order to implement the method, ring is by horizontally disposed surface at composition, thereby it is held in meniscus.Vertically draw and use the spring torsion balance measurement to carry out the required minimum force of this behavior from meniscus on ring.
Now, the preferred embodiment of the present invention and its device will be set forth with reference to the accompanying drawings, wherein: Fig. 1 is decomposition diagram, show the parts that are used for according to the nozzle assembly of device of the present invention, Fig. 2 is the plane of the grooved disk that shows in Fig. 1, Fig. 3 is the plane of the slotted ring that shows in Fig. 1, Fig. 4 is the skeleton diagram of incorporating into according to the device of nozzle of the present invention, Fig. 5 is decomposition diagram, demonstration is according to the parts of optional nozzle assembly of the present invention, Fig. 6 is the perspective view of the optional grooved disk that shows in Fig. 5, Fig. 7 is the profile on the A-A line of the optional grooved disk that shows in Fig. 5, Fig. 8 is the integrated spray nozzle that shows in Fig. 5 and the perspective view of slotted ring, Fig. 9 is the profile on the B-B line of the integrated spray nozzle that shows in Fig. 5 and ring, Figure 10 be illustrate when the decomposition diagram of the parts of Fig. 5 when seeing in the other direction and Figure 11 be when the profile that assembles when preparing to use by the parts of Fig. 5 and 10 demonstrations.
Fig. 1 shows for the exploded view according to the parts of the nozzle assembly of device of the present invention.Described parts comprise: i) nozzle 5, it has outer rim 5c and comprises columniform outlet opening 1, outlet opening 1 has the circumference that forms among the terminal 5a of excrescence 5b of nozzle 5, ii) slotted ring (grooved ring) 2, it has upstream face 2a, wherein forming the basic of three symmetry location is tangential groove (groove) 16, described groove also shows with dotted line in Fig. 3 and is 45 ° of inclinations with the longitudinal axis of nozzle 5, iii) grooved disk (slotted disc) 3, it has three part circumferential slots (partiallycircumferential slot) 13, groove 13 is located around disk 3 near peripheral flange 14 bottoms symmetry, flange 14 is given prominence to and restriceted envelope 15 in use downstream, iv) filter 4, and it comprises silk screen 12 and seal washer 4a.
In use, by the attaching parts of cooperation (co-operating) as 31 and 32 shown types among Figure 11, these parts are in contact with one another and are kept together, thereby, ring 2 is maintained in the space 15 that is limited by the flange 14 of disk 3, and the packing ring 4a of the assembly of disk 3 and ring 2 by filter 4 be maintained in the nozzle 5, filter 4 by as the attaching parts of 31 and 32 display types advance to the outer rim 5c of nozzle 5.
Be operative installations, paint 6 is introduced into as in 5 liters of reservoirs 7 that show among Fig. 4, and uses hand pump 8 to produce the pumping pressure of 2.5 to 5 bar.In optional embodiment, can use electric pump to produce pressure.The valve 10 that flexible hose 9 can be opened by trigger 10a from reservoir 7 guiding, therefore, one opens valve 10, paint 6 silk screens 12 of advancing and passing filter 4 by rigidity jet pipe 11 under pressure.Silk screen 12 filters and shears paint 6, and it leaves filter 4 subsequently, and operation is passed the cylindrical extension of nozzle 5 and divided 5d, arrives the upstream face of grooved disk 3, flows through groove 13 subsequently and enters in the groove 16 in the slotted ring 2.
The vortex fluid of paint 6 enters outlet opening 1, and it is advanced with vortex (that is spiral) motion by outlet opening 1.Subsequently, it 1 is discharged from from the hole, 1 atomizing and form the circular cone 19 of paint 6 in the hole, and circular cone 19 can aim at and be applied to surface 20 in coating procedure.
In optional embodiment, grooved disk 3 is omitted with rotating ring 2 and screw is to be given by the helical land (not shown) similar to the rifling in the rifle, and helical land is provided in nozzle segment 5d.
Fig. 5 to 11 shows the embodiment that is used for according to the preferred nozzle assembly of apparatus of the present invention.Particularly, Fig. 5 is presented at the cylindrical circular hole 21 of formation from the far-end 25a (referring to Figure 10) of outstanding outstanding (frustral) conical portion 25b of nozzle 25.Nozzle 25 is integrated with slotted ring 22, and slotted ring 22 is included in and extends between periphery 28 and interior all 27 and be the tangential groove 26 basically of 45 ° of inclinations with the major axis of nozzle 25.The space 25c aligning that is limited by the interior all 27 cylindrical space 22a (referring to Fig. 9) that limited and the inner surface 25d of conical portion 25b is communicated with.
Fig. 5 also shows grooved disk 23, and it comprises the groove 23a (the best as seen in Fig. 6) that the part of four symmetric arrangement is circumferentially extended, and groove 23a is positioned at the bottom of closing on circumferential flange 23b, and flange 23b is outstanding downstream in use.Flange 23b is dimensioned so that the annular groove 25e that forms in the nozzle 25 that closely cooperates.At last, Fig. 5 has also shown the filter 24 with packing ring 24a and 24b and silk screen 24c.
Figure 11 shows, by the be threaded parts of parts 31 and 32 Fig. 5 to 10 when being maintained at its rigging position of cooperation.Parts 32 also keep jet pipe 11 to contact closely with filter 24 fluids.Packing ring 24b remains on groove 26 upstreams and the appropriate location of closing on groove 26 in the nozzle 25, the appropriate location of attached flange 23b in recessed edge 25e of garden dish 23 with disk 23.
Equally for operative installations, paint 6 is poured in 5 liters the reservoir 7 and uses hand pump 8 to produce the pumping pressure of 2.5 to 5 bar.As in the above-described embodiment, can also use electric pump to produce pressure.The effect of pumping pressure is that paint 6 is transported by device to the general direction of discharging by hole 21 to enter nozzle 25 from entrance, but alternate manner forms not significantly effect to spraying, therefore, this method is that non-air is auxiliary basically, and this air-assisted spray for routine is the situation of expectation.
Jet element can be made of metal or from for example polyacetals or polypropylene moulding of thermoplastic.
The present invention further sets forth by the following example, and wherein embodiment A and Embodiment B are comparative.
Embodiment 1
Mix by the composition that will be in the table 1 shows, prepare viscous aqueous non--newton's paint, it has 46.6 solids content and is suitable for covering lip-deep vestige.Paint comprises associative thickeners and has 8 to 9 pH value.Its brookfield viscosity, its surface tension, its apparent tensile viscosity and density thereof all are under 22 ℃, and also shown in the table 1.This paint is 25 ℃ of ICI cone-plate viscosity that also have 0.06Pa.sec.
Paint is filled in 5 liters of reservoirs with reference to figure 5 to 11 described devices.Use hand pump, paint is pressurized to 4 bar, subsequently, open valve, to allow paint from reservoir, to discharge and carry flexible hose, process valve and jet pipe by the 10mm diameter, to pass filter and enter in the nozzle.The helical form rotating fluid of paint is discharged from by the jet expansion hole.Paint is atomizing fully, obtains the conical shaped spray of about 200mm diameter at 150mm place, distance hole.Coating is sprayed onto the surface and goes up and produce uniform coating, and it can cover the vestige of the general type of finding on the exterior wall of resident's building.If spraying is carried out in the mode that jet pipe wherein moves along the loop of being made up of the circle rotation, be combined with and cause that it transverse to the lateral displacement on the required rectilinear direction in surface, then obtains more effective result.
Comparative Example A An and B
Being suitable for covering traditional viscous aqueous non newtonian paint of lip-deep vestige when using by brush, is to mix by the composition that will show in the embodiment A in the table 1 to prepare.In addition, by the fence paint type of advocating in the handbook of mentioning previously, be to mix by the composition that will show in the table 2 to prepare.Surface tension, apparent tensile viscosity, brookfield viscosity and the density of paint are presented in the table 1.
Again these two kinds of paint as carrying out, embodiment 1 are sprayed on the surface.Traditional vestige covers paint (embodiment A) and can not spray, and fence paint overatomize obtains wide conical shaped spray, and it is easily by blow-off direction.Table 1
*Binder polymer is the water emulsion of 51wt% methyl methacrylate, 48wt% hexyl acrylic acid 2-ethyl ester and the acrylic acid copolymer of 1wt%.
*Acrysol TT-615 is the expandable acrylate copolymer of alkali, is supplied by Rohm and Haas Company of Philadelphia as associative thickeners.
* *By using the mensuration of improving one's methods of its asymptotic value.Table 2
| Composition | Embodiment 1 weight portion | The embodiment A weight portion | Embodiment B is referring to table 2 |
| Water | 32.63 | 25.43 | |
| The mineral oil antifoaming agent | 0.31 | 0.45 | |
| Maleic anhydride/olefin copolymer pigment dispersing agent | 1.08 | 1.00 | |
| Biocide | 0.67 | 0.80 | |
| Phenmethylol | 0.9 | 1.00 | |
| Anion surfactant | 0.18 | 0.20 | |
| Dolomite | 3.9 | 3.00 | |
| Calcined clay | 9.00 | 9.00 | |
| Potter's clay | 4.90 | 5.27 | |
| Rutile titanium dioxide | 10.81 | 10.55 | |
| The hydroxyethylcellulose of moderate chain length: non-associative thickeners | 0 | 0.54 | |
| The hydroxyethylcellulose that the short chain of hydrophobically modified is long: associative thickeners | 0.18 | 0 | |
| *Binder polymer | 32.42 | 34.20 | |
| Ammonia | 0.11 | 0.12 | |
| The polymer pigment that " Ropaque " is porose | 2.69 | 7.60 | |
| **Acrysol TT615 | 0.20 | 0 | |
| Character | |||
| The Wt% solid | 46.56 | 48.65 | 10.1 |
| Surface tension 10 -3N/m | 39.9 | 40.6 | 40 |
| Brookfield viscosity Pa.sec | 4.6 | 16 | 0.06 |
| ***Apparent tensile viscosity Pa.sec | 0.3 | 3 | 0.025 |
| Last plate separates mm | 7.9 | 19.8 | 7.9 |
| Density kg/l | 1.24 | 1.27 | 1.03 |
| Composition | Weight % |
| Water | 88.7 |
| Vinyl acetate/vinyl " Versate " copolymer | 4.4 |
| *Acrysol TT-615 associative thickeners | 0.5 |
| Pigment | 2.9 |
| Wax shape emulsion | 2.3 |
| Biocide | 0.5 |
| Agglomerated solvent, ammonia and defoamer | 0.7 |
| Total solids content | 10.1 |
Claims (30)
1. with the method for the auxiliary sprayed surface of the viscous aqueous architectural coating compositions non-air that is suitable for covering lip-deep vestige, described compositions table reveals non--Newtonian flow and comprises binder polymer and other solid constituent, and described method is included in the hole that forms under the pressure and discharges described composition from nozzle, wherein:
A) solids content of described composition is based on the 30wt% at least of described composition total weight,
B) when when 25 ℃ are measured, the apparent tensile viscosity that described composition has is from 0.05Pa.sec to 0.5Pa.sec, simultaneously, when when measuring for 22 ℃, its brookfield viscosity be at least 0.5Pa.sec and
C) described composition was subjected to the pressure of from 2.5 to 5 bar before discharging from described hole.
2. the method described in claim 1, wherein said hole have oblateness or circular periphery.
3. as the method described in the claim of front each, wherein said coating composition has the solids content from 40wt% to 53wt%.
4. as the method described in the claim of front each, wherein said coating composition has the apparent tensile viscosity from 0.1Pa.sec to 0.4Pa.sec.
5. as the method described in the claim of front each, wherein when measuring for 22 ℃, described coating composition has the brookfield viscosity from 1Pa.sec to 12Pa.sec.
6. as the method described in the claim of front each, wherein when measuring for 25 ℃, described coating composition has the ICI cone-plate viscosity from 0.015Pa.sec to 1.0Pa.sec.
7. as the method described in the claim of front each, wherein when described composition during by described nozzle, cross force is endowed described composition, makes it enter described hole with vorticla motion.
8. the method described in claim 7, wherein said cross force is given by the reaction force on the surface that tilts at an angle from the longitudinal axis with described nozzle.
9. the method described in claim 8, the longitudinal axis of wherein said surface and described nozzle is 25 ° to 65 ° inclinations of angle.
10. method as claimed in claim 8 or 9, the described surface of wherein giving described reaction force forms the part that described coating composition passes groove wherein.
11. as each described method of claim 8 to 10, wherein said coating composition is added to described surface, described reaction force is given by at least one part circumferential slot on described upstream surface and contiguous described surface in described surface.
12. as each described method of claim 8 to 9, the described surface of wherein giving described reaction force is provided by at least one helical land in the cylindrical part that is provided at described nozzle.
13. as each described method of claim 8 to 12, wherein said coating composition passes the outstanding cone-shaped space between the described surface of giving described reaction force and described hole.
14. as each described method in the claim of front, wherein said viscous aqueous architectural coating compositions is paint, and 50% the quilt described paint of spraying is sprayed to the droplet of 300 mu m range diameters to have 150 μ m by volume.
15. as each described method in the claim of front, wherein said coating composition passes filter.
16. as each described method in the claim of front, wherein said coating composition is transferred from described hole with the speed from 0.3 liter/minute to 1.3 liters/minute.
17. with the device of the auxiliary sprayed surface of the viscous aqueous architectural coating compositions non-air that is suitable for covering lip-deep vestige, described compositions table reveals non--Newtonian flow, and wherein said device comprises:
A) reservoir that can pressurize, it comprises architectural coating compositions, the solids content that described composition has is based on the 30wt% at least of described composition total weight, and described composition has apparent tensile viscosity and the brookfield viscosity of 0.5Pa.sec at least from 0.05Pa.sec to 0.5Pa.sec when 25 ℃ are measured
B) nozzle that is communicated with described reservoir, described nozzle ends at outlet opening,
C) compressor, its described composition can be pressurised into 2.5 to 5 bar and
D) pressure relief valve, it is set to, and when pressure reaches the value of 2.5 to 5.0 bar scopes, discharges the pressure of described reservoir.
18. device as claimed in claim 17, the auxiliary spraying of wherein said non-air is airless spraying, and the solids content that has of described architectural coating compositions is based on the 35wt% to 65wt% of described composition total weight.
19. device as claimed in claim 17, the auxiliary spraying of wherein said non-air is airless spraying, and the solids content that has of described architectural coating compositions is based on the 40wt% to 53wt% of described composition total weight.
20. device as claimed in claim 17, wherein said hole have oblateness or circular periphery.
21. the device described in claim 20, the periphery in wherein said hole has the longest diameter from 0.5mm to 2mm.
22. as each described device in the claim 17 to 21, wherein said device has the equipment of giving transverse to the power of the described nozzle longitudinal axis, described power makes described composition enter described hole with vorticla motion.
23. device as claimed in claim 22 is wherein given the surface composition of the described equipment of described composition cross force by the longitudinal axis that favours described nozzle.
24. device as claimed in claim 23, wherein said surface tilts with 25 ° to 65 ° angle.
25. as each described device in the claim 23 to 24, what wherein said device comprised described upstream surface and contiguous described surface is used for giving the parts of lateral flow, described parts comprise at least one part circumferential slot, and described composition can be added to described surface by described groove.
26. as each described device in the claim 22 to 24, wherein provide for the equipment of giving described composition cross force at least one helical land by the cylindrical part that is positioned at described nozzle.
27. as each described device in the claim 23 to 26, wherein said device comprises the outstanding cone-shaped space between the described surface of giving described cross force and described hole.
28. as each described device in the claim 17 to 27, wherein said compressor is hand pump.
29. as each described device in the claim 17 to 27, wherein said compressor is electrodynamic pump.
30. viscous aqueous architectural coating compositions, it shows non newtonian and flows and be suitable for being sprayed onto under the pressure of 2.5 to 5 bar surperficial to cover the vestige on it, described composition has based on described composition total weight and is the solids content of 30wt% at least, and described composition has the brookfield viscosity of 0.5Pa.sec at least
Wherein when when measuring for 25 ℃, the apparent tensile viscosity that described composition has is from 0.05Pa.sec to 0.5Pa.sec.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0600674.6A GB0600674D0 (en) | 2006-01-13 | 2006-01-13 | Airless Spray-Coating Of A Surface With A Viscous Aqueous Architectural Coating Composition |
| GB0600674.6 | 2006-01-13 | ||
| EP06380052.8 | 2006-03-17 | ||
| EP06380052A EP1810754A1 (en) | 2006-01-13 | 2006-03-17 | Non-pheumatically assisted spray-coating of a surface with viscous aqueous architectural coating composition |
| PCT/EP2006/012227 WO2007079932A1 (en) | 2006-01-13 | 2007-01-09 | Non-pneumatically asissted spray-coating of a surface with a viscous aqueous architectural coating composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101384375A CN101384375A (en) | 2009-03-11 |
| CN101384375B true CN101384375B (en) | 2013-08-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800052305A Expired - Fee Related CN101384375B (en) | 2006-01-13 | 2007-01-09 | Non-pneumatically asissted spray-coating of a surface with a viscous aqueous architectural coating composition |
Country Status (8)
| Country | Link |
|---|---|
| EP (2) | EP1810754A1 (en) |
| CN (1) | CN101384375B (en) |
| AR (1) | AR058988A1 (en) |
| BR (1) | BRPI0707140B1 (en) |
| GB (2) | GB0600674D0 (en) |
| IE (1) | IES20060216A2 (en) |
| UY (1) | UY30092A1 (en) |
| WO (1) | WO2007079932A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9545643B2 (en) | 2008-10-22 | 2017-01-17 | Graco Minnesota Inc. | Portable airless sprayer |
| AU2014201323B2 (en) * | 2008-10-22 | 2016-02-04 | Graco Minnesota Inc. | Portable airless sprayer |
| KR101694596B1 (en) | 2008-10-22 | 2017-01-09 | 그라코 미네소타 인크. | Portable airless sprayer |
| EP2600745B1 (en) | 2010-08-03 | 2016-04-20 | Velcro Industries B.V. | Touch fastening |
| US8940207B2 (en) | 2010-08-03 | 2015-01-27 | Velcro Industries B.V. | Pelletizing |
| US8523088B2 (en) | 2011-01-18 | 2013-09-03 | Velcro Industries B.V. | Particle spraying |
| EP2907581B1 (en) * | 2014-02-12 | 2017-12-27 | PNR Italia S.r.l. | Swirl device for nozzles |
| US9650525B1 (en) * | 2016-08-09 | 2017-05-16 | Funai Electric Co., Ltd. | Aqueous ink for ink-jet heads |
| WO2019109022A1 (en) * | 2017-11-30 | 2019-06-06 | Moore John R | Coating compositions for application utilizing a high transfer efficiency applicator and methods and systems thereof |
| US20220234062A1 (en) | 2019-05-31 | 2022-07-28 | Graco Minnesota Inc. | Handheld fluid sprayer |
| US10968903B1 (en) | 2020-06-04 | 2021-04-06 | Graco Minnesota Inc. | Handheld sanitary fluid sprayer having resilient polymer pump cylinder |
| US10926275B1 (en) | 2020-06-25 | 2021-02-23 | Graco Minnesota Inc. | Electrostatic handheld sprayer |
| EP3928877A1 (en) * | 2020-06-26 | 2021-12-29 | PPG Europe B.V. | Improvements in the cleaning of liquid spray apparatus |
| CN113293542B (en) * | 2021-04-10 | 2023-05-09 | 重庆海通环保科技有限公司 | Spraying device for manufacturing reverse osmosis membrane |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1195008A (en) * | 1997-03-27 | 1998-10-07 | 赫尔克里士公司 | Use of aqueous protective coating compositions for industrial coatings and aqueous coating compositions |
| US6306952B1 (en) * | 1997-07-03 | 2001-10-23 | Rohm And Haas Company | Coating method and coating composition used therein |
| EP1625891A2 (en) * | 2004-08-13 | 2006-02-15 | Imperial Chemical Industries PLC | Airless spray-coating of a surface with a viscous aqueous architectural coating composition |
| EP1627689A1 (en) * | 2004-08-13 | 2006-02-22 | Imperial Chemical Industries Plc. | Method for airless spray-coating a surface with a viscous architectural aqueous coating composition |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5395436A (en) * | 1994-01-28 | 1995-03-07 | Ppg Industries, Inc. | Waterborne wiping stain for wood |
-
2006
- 2006-01-13 GB GBGB0600674.6A patent/GB0600674D0/en not_active Ceased
- 2006-03-17 EP EP06380052A patent/EP1810754A1/en not_active Withdrawn
- 2006-03-20 IE IE20060216A patent/IES20060216A2/en not_active IP Right Cessation
- 2006-12-19 GB GBGB0625261.3A patent/GB0625261D0/en not_active Ceased
-
2007
- 2007-01-09 BR BRPI0707140-0A patent/BRPI0707140B1/en not_active IP Right Cessation
- 2007-01-09 CN CN2007800052305A patent/CN101384375B/en not_active Expired - Fee Related
- 2007-01-09 WO PCT/EP2006/012227 patent/WO2007079932A1/en active Application Filing
- 2007-01-09 EP EP06841033.1A patent/EP1976646B1/en active Active
- 2007-01-11 AR ARP070100124A patent/AR058988A1/en active IP Right Grant
- 2007-01-12 UY UY30092A patent/UY30092A1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1195008A (en) * | 1997-03-27 | 1998-10-07 | 赫尔克里士公司 | Use of aqueous protective coating compositions for industrial coatings and aqueous coating compositions |
| US6306952B1 (en) * | 1997-07-03 | 2001-10-23 | Rohm And Haas Company | Coating method and coating composition used therein |
| EP1625891A2 (en) * | 2004-08-13 | 2006-02-15 | Imperial Chemical Industries PLC | Airless spray-coating of a surface with a viscous aqueous architectural coating composition |
| EP1627689A1 (en) * | 2004-08-13 | 2006-02-22 | Imperial Chemical Industries Plc. | Method for airless spray-coating a surface with a viscous architectural aqueous coating composition |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1810754A1 (en) | 2007-07-25 |
| GB0600674D0 (en) | 2006-02-22 |
| EP1976646A1 (en) | 2008-10-08 |
| CN101384375A (en) | 2009-03-11 |
| GB0625261D0 (en) | 2007-01-24 |
| WO2007079932A1 (en) | 2007-07-19 |
| AR058988A1 (en) | 2008-03-05 |
| BRPI0707140B1 (en) | 2018-06-19 |
| EP1976646B1 (en) | 2019-03-13 |
| BRPI0707140A8 (en) | 2018-05-08 |
| IES20060216A2 (en) | 2007-07-25 |
| BRPI0707140A2 (en) | 2011-04-19 |
| UY30092A1 (en) | 2007-08-31 |
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