CN103820018B - Ornamental protective coating and its coating and their preparation method - Google Patents
Ornamental protective coating and its coating and their preparation method Download PDFInfo
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- CN103820018B CN103820018B CN201410071797.4A CN201410071797A CN103820018B CN 103820018 B CN103820018 B CN 103820018B CN 201410071797 A CN201410071797 A CN 201410071797A CN 103820018 B CN103820018 B CN 103820018B
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Abstract
The present invention provides a kind of ornamental protective coating and its coating and preparation method; the ornamental protective coating includes polyether type aqueous polyurethane, pearl essence, thickener and aqueous solvent; wherein it is based on the gross weight of the coating; the content of the polyether type aqueous polyurethane is 50 70 weight %; the content of the pearl essence is 0.01 1 weight % and the content of the thickener is 0.1 2 weight %, and wherein described thickener is methyl diphenylene diisocyanate type urethane, alkali-soluble acrylic's polymer of hydrophobically modified or combinations thereof.There is excellent decoration performance or flash effect, and excellent rippability by the coating of coating preparation of the invention.
Description
Technical field
The present invention relates to a kind of ornamental protective coating and its coating and their preparation method.
Background technology
Protective coating has a wide range of applications, its film forming matter mainly include aqueous polyurethane, polyacrylate resin,
Epoxy resin, unsaturated polyester resin, polyurethane resin etc..
Aqueous polyurethane is to replace organic solvent as the new polyurethane system of decentralized medium using water, and also referred to as moisture dissipates poly-
Urethane, aqueous polyurethane or water-based polyurethane.Aqueous polyurethane has pollution-free, safe and reliable, good mechanical performance, compatibility
Good, easily modified the advantages of.
WO200481074 discloses a kind of strippable protective coating, including aqueous polyurethane molecular structure.
WO2007/108905 refer to a kind of aqueous polyurethane coating, and mention a kind of special crosslinking agent, to improve curing rate.
WO2011089153 discloses a kind of polyurethane based coatings, and this coating can be recycling.JP2000198921 is disclosed
A kind of strippable aqueous polyurethane coating, and synthon to aqueous polyurethane is set forth.But these patents
It is not directed to the decoration performance of protective coating.
The content of the invention
The present invention is intended to provide a kind of ornamental protective coating and its coating and preparation method, by the ornamental protective coating
The ornamental protective coating of preparation not only has excellent decoration performance or flash effect, and with excellent rippability.
One aspect of the present invention provides a kind of ornamental protective coating, its include polyether type aqueous polyurethane, pearl essence,
Thickener and aqueous solvent, wherein the gross weight based on the coating, the content of the polyether type aqueous polyurethane is 50-70 weights
Amount %, the content of the pearl essence is 0.01-1 weight %, and the content of the thickener is 0.1-2 weight %, and the increasing
Thick dose selected from one or more in following group：The alkali solubility third of methyl diphenylene diisocyanate type urethane and hydrophobically modified
Olefin(e) acid based polymer.
In a preferred embodiment of ornamental protective coating of the invention, the coating also includes additive, institute
State one or more that additive is selected from following group：Rheology modifier, dispersant, wetting agent and defoamer.
In the preferred embodiment of ornamental protective coating of the invention, the polyether type aqueous polyurethane contains
It is 55-65 weight % to measure.
In a preferred embodiment of ornamental protective coating of the invention, the content of the pearl essence is 0.1-
0.5 weight %.
In a preferred embodiment of ornamental protective coating of the invention, the thickener is diphenyl methane two
Isocyanates type polyurethane, and the content of the thickener is 0.3-2 weight %.
In a preferred embodiment of ornamental protective coating of the invention, the thickener is the alkali of hydrophobically modified
Soluble acrylic based polymer, and the content of the thickener is 0.1-1 weight %.
Another aspect of the present invention provides a kind of ornamental protective coating, and it is the dicoration that will be provided according to the present invention
Obtained from protective coating coating.
In a preferred embodiment of ornamental protective coating of the invention, the ornamental protective coating it is visible
Light reflectivity is more than or equal to 20%.
Another aspect of the present invention provides a kind of method for preparing above-mentioned ornamental protective coating, methods described bag
Include following steps：
The polyether type aqueous polyurethane and the aqueous solvent are mixed to obtain the first mixture；
The pearl essence is mixed with first mixture to obtain the second mixture；With
The thickener is mixed with second mixture to obtain the ornamental protective coating.
In a preferred embodiment of the method for preparing ornamental protective coating of the invention, will be polyether type aqueous poly-
Urethane, aqueous solvent mix with additive to obtain the first mixture, and the additive is selected from one or more in following group：
Rheology modifier, dispersant, wetting agent and defoamer.
Another aspect of the present invention provides a kind of method for preparing above-mentioned ornamental protective coating, methods described bag
Include following steps：It is coated with according to the ornamental protective coating provided according to the present invention.
The ornamental protective coating prepared by the ornamental protective coating of offer of the invention not only has excellent
Decoration performance or flash effect, and with excellent rippability.The ornamental protective coating can not only protect base material to exempt from
Scratched, acid rain, the environmental damage such as UV, its removable property can also simplify the difficulty of secondary construction.Additionally, the dicoration is protected
The glittering outward appearance of coating can also provide the space of wide personalized designs for client, be with a wide range of applications.
Specific embodiment
It should be appreciated that without departing from the scope or spirit of the invention, those skilled in the art can be according to this
The teaching of specification envisions other various embodiments and it can be modified.Therefore, specific embodiment below is not
Restrictive meaning.
Except as otherwise noted, expression characteristic size, quantity and the physics for otherwise being used in specification and claims are special
All numerals of property are construed as being modified by term " about " in all cases.Therefore, unless there are opposite
Illustrate, the numerical parameter otherwise listed in description above and appended claims is approximation, those skilled in the art
Member can seek the required characteristic of acquisition using teachings disclosed herein, suitably change these approximations.Use end points table
The use of the number range shown includes all numerals and any scope in the range of this in the range of this, for example, 1,2,3,4 and
5 include 1,1.1,1.3,1.5,2,2.75,3,3.80,4 and 5 etc..
Ornamental protective coating
A kind of ornamental protective coating of the present invention, it includes polyether type aqueous polyurethane, pearl essence, thickener and aqueous molten
Agent, wherein the gross weight based on the coating, the content of the polyether type aqueous polyurethane is 50-70 weight %, the pearly-lustre
The content of powder is 0.01-1 weight %, and the content of the thickener is 0.1-2 weight %, and the thickener is selected from following group
In one or more：Alkali-soluble acrylic's polymer of methyl diphenylene diisocyanate type urethane and hydrophobically modified.
Polyether type aqueous polyurethane is main film forming matter in the present invention, and to the thickness of film, intensity has important influence.
The content of polyether type aqueous polyurethane is 50-70 weight %, preferably 55-65 weight %, and 100 are pressed with the gross weight of the coating
Weight % is counted.The amount of polyether type aqueous polyurethane cannot be below 50 weight %, coating is difficult to film forming；Polyether-type
The content of aqueous polyurethane can not be higher than 70 weight %, may otherwise make coating be difficult to be coated with (for example it is difficult to spraying).Institute
The example for stating polyether type aqueous polyurethane includes EU emulsion, for example, be purchased from the 8961 of Lubrizol Corp..
Pearl essence can make decorative effect of the coating with flash of light obtained by the coating of present invention offer.The present invention is carried
The decorative effect of the coating of confession can be characterized by visible reflectance, it is seen that light reflectivity is higher, the luminous effect of coating
It is better, on the contrary it is poorer.Visible reflectance can be entered by the spectrophotometer Lambda1050 purchased from PerkinElmer companies
Row measurement.The content of pearl essence is 0.01-1 weight %, preferably 0.1-0.5 weight %, and 100 are pressed with the gross weight of the coating
Weight % is counted.The content of pearl essence has important influence for the flash effect of the coating that the present invention is provided.The content of pearl essence
0.01 weight % is cannot be below, coating is lost the effect of flash of light；The content of pearl essence is not above 1 weight
Amount %, may otherwise make pearl essence reunite in coating system.Pearl essence can select those existing pearls in the prior art
Light powder, the example includes being purchased from the Ronastar Golden Jewel of Merck companies.
Thickener is the neccessary composition in coating of the present invention.It is astonishing and it is of special importance that the inventors discovered that,
Only when thickener includes alkali-soluble acrylic's polymer, methyl diphenylene diisocyanate (MDI) type of hydrophobically modified
Polyurethane or combinations thereof can just realize effect of the invention.Additionally, the content of thickener is carried to the present invention in the present invention
The coating of confession also has important influence.The content of thickener is 0.1-2 weight %, preferably 0.3-1 weight %, with the painting
The gross weight of material is based on 100 weight %.When the content of thickener is less than 0.1 weight %, the pearl essence in coating may be made
Produce precipitation.When the content of the thickener is higher than 2 weight %, coating may be made excessively sticky, be unfavorable for coating (especially
It is unfavorable for spraying).When alkali-soluble acrylic polymer of the thickener for hydrophobically modified, its content is preferably 0.1-1
Weight %, by the gross weight of the coating based on 100 weight %.When the thickener is methyl diphenylene diisocyanate
(MDI) during type polyurethane, its content is preferably 0.3-2 weight %, by the gross weight of the coating based on 100 weight %.It is described
The example of alkali-soluble acrylic's polymer of hydrophobically modified includes being purchased from the Acrysol TT-615 of Dow companies.Described two
The example of methylenebis phenyl isocyanate (MDI) type polyurethane includes being purchased from the LM-275 of Shanghai Yong Yan companies.
The coating that the present invention is provided contains aqueous solvent, and it is mainly used in dispersed each component.Aqueous solvent includes water
Or the mixture of water and organic solvent, preferably water.The organic solvent that organic solvent is applicable including acetone etc..Aqueous solvent
Content is 5-35 weight %, preferably 10-30 weight %, by the gross weight of the coating based on 100 weight %.Additionally, organic
Content of the solvent (such as acetone) in aqueous solvent can influence the speed of coating film forming.For example, organic solvent (acetone) contains
Amount is higher, and the speed of coating film forming is faster, but organic solvent (acetone) content highest otherwise may no more than 20 weight %
Rate of drying in spraying process can be caused too fast and spray gun is blocked.
In order to the coating that the present invention is provided is more convenient for being coated with, and there is more preferable outward appearance after coating, what the present invention was provided
Coating can also as needed further include additive, and the additive includes one or more in following group：Rheology changes
Property agent, defoamer, wetting agent and dispersant.The content of these compositions is 0-1 weight %, and 100 are pressed with the gross weight of the coating
Weight % is counted.The rheology modifier can preferably purchased from this special chemical company of hamming Rheolate 288, CA-902 or
RM-12W.The defoamer can preferably polysiloxane-based defoamer, the polysiloxane-based defoamer can preferably be purchased from BYK
The Byk-024 or Byk-065 of company.The wetting agent can preferred organosilicon wetting agent, the organosilicon wetting agent can be with excellent
Choose the Byk-3455 from the BYK companies or DC67 purchased from Dow Corning Corporation.The dispersant can preferred organosilicone spreading agent,
The organosilicone spreading agent can preferably purchased from the Soja-Lecithin W250 or the BYK- purchased from BYK companies of Lubrizol Corp.
161 or BYK-163.
The method for preparing ornamental protective coating
The present invention provides a kind of method of the ornamental protective coating for preparing, including step：
The polyether type aqueous polyurethane and the aqueous solvent are mixed to obtain the first mixture；
The pearl essence is mixed with first mixture to obtain the second mixture；With
The thickener is mixed with second mixture to obtain the ornamental protective coating.
Methods described, can also in the step of obtaining the first mixture, by polyether type aqueous polyurethane, aqueous solvent with
To obtain the first mixture, the additive includes one or more in following group for additive mixing：Rheology modifier, froth breaking
Agent, wetting agent and dispersant.
On " polyether type aqueous polyurethane, aqueous solvent, pearl essence, the thickener, and optional rheology modified
The description of agent, dispersant, wetting agent and defoamer ", refer to this specification "Ornamental protective coating" part.
Ornamental protective coating
The present invention provides a kind of ornamental protective coating, and it is coating according to the ornamental protective coating of present invention offer
Obtain.
Description on " the ornamental protective coating ", refer to this specification "Ornamental protective coating" and "Prepare dress The method of decorations property protective coating" part.
The method for preparing ornamental protective coating
The present invention provides a kind of method for preparing ornamental protective coating, including step：It is coated with what is provided according to the present invention
Ornamental protective coating.
Methods described, can also after the above step further include step：Dry.
The ornamental protective coating that can be provided using the various conventional coating method coating present invention, is preferably but not limited to
Spraying, blade coating are brushed.
Description on " the ornamental protective coating ", refer to this specification "Ornamental protective coating" and "Prepare dress The method of decorations property protective coating" part.
Embodiment
Examples provided below and comparative example help to understand the present invention, and these embodiments and comparative example should not be managed
It is limitation of the scope of the invention to solve.Except as otherwise noted, all of parts and percentages are by weight.
The raw material used in examples and comparative examples of the present invention is as shown in table 1 below.
Table 1
| Trade name | Chemical name, property or specification | Production firm |
| 8961 | Polyether type aqueous polyurethane | Lu Borun |
| Byk-024 | Polysiloxanes (defoamer) | BYK |
| Byk-3455 | Organosilicon (wetting agent) | BYK |
| Soja-Lecithin W250 | Organosilicon (dispersant) | Lu Borun |
| Ronastar Golden Jewel | Pearl essence | Merck |
| Rheolate 288 | Polyurethane (rheology modifier) | Hai Mingsi special chemicals |
| Acrysol TT-615 | Alkali-soluble acrylic's polymer (thickener) of hydrophobically modified | Dow |
| LM-275 | Methyl diphenylene diisocyanate type urethane (thickener) | Grind forever in Shanghai |
| Hydroxymethyl cellulose | Hydroxymethyl cellulose (thickener) | Hebei Xingtai company |
The rippability test of coating
The present invention tests the rippability of the coating that the embodiment of the present invention or comparative example are provided by the following method：
Coating is sprayed on glass substrate surface；
After treating that the coating is dried, a coating is formed on glass substrate surface；
Trial finger peels off the coating from glass baseplate, if be easily peeled off, illustrate the fissility of coating compared with
It is good, if can not peel off, illustrate that the fissility of coating is poor.
The flash effect test of coating
The present invention tests the flash effect of the coating that the embodiment of the present invention or comparative example are provided by the following method：
Coating is sprayed on glass substrate surface；
After treating that the coating is dried, a coating is formed on glass substrate surface；
The visible reflectance of the coating is measured with Lambda1050 spectrophotometers (being purchased from PerkinElmer companies of the U.S.)
Rate, it is seen that light reflectivity is higher, the luminous effect of coating is better.
Embodiment 1
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 71.58g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 5.92g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under the intense agitation of 1000-1500rpm, by 0.5g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 0.5g thickener Acrysol TT-615 sides is just slowly added into mixture, with uniform suspension shape
Formula obtains the ornamental protective coating of present invention offer.
Substrate surface by the ornamental protective coating with spray gun spraying needed for, dries 1-2 small naturally at room temperature
When after form one layer of glittering and strippable ornamental protective coating in substrate surface.
Comparative example 1
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 75.79g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 1.71g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under conditions of being stirred vigorously of 1000-1500rpm, by 0.5g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 0.5g thickener Acrysol TT-615 sides is just slowly added into mixture, with uniform suspension shape
Formula obtains the ornamental protective coating for comparing.
By the ornamental protective coating spray gun, because the coating is very sticky, so be difficult to coating for example spraying.
Embodiment 2
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 54.74g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 22.76g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under conditions of being stirred vigorously of 1000-1500rpm, by 0.5g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 0.5g thickener Acrysol TT-615 sides is just slowly added into mixture, with uniform suspension shape
Formula obtains the ornamental protective coating of present invention offer.
Substrate surface by the ornamental protective coating with spray gun spraying needed for, dries 1-2 small naturally at room temperature
When after form one layer of glittering and strippable ornamental protective coating in substrate surface.
Comparative example 2
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 50.53g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 26.97g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under conditions of being stirred vigorously of 1000-1500rpm, by 0.5g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 0.5g thickener Acrysol TT-615 sides is just slowly added into mixture, with uniform suspension shape
Formula obtains the ornamental protective coating for comparing.
Substrate surface by the ornamental protective coating with spray gun spraying needed for, dries 1-2 small naturally at room temperature
When after form one layer of ornamental protective coating in substrate surface, the ornamental protective coating skewness and have showing for shrinkage cavity
As.
Embodiment 3
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 63.16g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 13.94g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under conditions of being stirred vigorously of 1000-1500rpm, by 0.9g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 0.5g thickener Acrysol TT-615 sides is just slowly added into mixture, with uniform suspension shape
Formula obtains the ornamental protective coating of present invention offer.
Substrate surface by the ornamental protective coating with spray gun spraying needed for, dries 1-2 small naturally at room temperature
When after form one layer of glittering and strippable ornamental protective coating in substrate surface.
Comparative example 3
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 63.16g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 13.74g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under conditions of being stirred vigorously of 1000-1500rpm, by 1.1g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 0.5g thickener Acrysol TT-615 sides is just slowly added into mixture, with thickener
The addition of Acrysol TT-615, pearl essence is presented agglomeration, and produces a large amount of precipitations.
Embodiment 4
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 63.16g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 14.81g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under conditions of being stirred vigorously of 1000-1500rpm, by 0.03g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 0.5g thickener Acrysol TT-615 sides is just slowly added into mixture, with uniform suspension shape
Formula obtains the ornamental protective coating of present invention offer.
Substrate surface by the ornamental protective coating with spray gun spraying needed for, dries 1-2 small naturally at room temperature
When after form one layer of glittering and strippable ornamental protective coating in substrate surface.
Comparative example 4
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 63.16g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 14.84g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
The stirring of 0.5g thickener Acrysol TT-615 sides is just slowly added into mixture, with uniform suspension shape
Formula obtains the protective coating for comparing.
By the protective coating with spray gun spraying to needed for substrate surface, after drying naturally at room temperature 1-2 hours
Substrate surface forms layer of transparent and strippable protective coating, decorative effect of the protective coating without flash of light.
Embodiment 5
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 63.16g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 14.72g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under conditions of being stirred vigorously of 1000-1500rpm, by 0.5g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 0.12g thickener Acrysol TT-615 sides is just slowly added into mixture, with uniform suspension
Form obtains the ornamental protective coating of present invention offer.
Substrate surface by the ornamental protective coating with spray gun spraying needed for, dries 1-2 small naturally at room temperature
When after form one layer of glittering and strippable ornamental protective coating in substrate surface.
Comparative example 5
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 63.16g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 14.76g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under conditions of being stirred vigorously of 1000-1500rpm, by 0.5g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 0.08g thickener Acrysol TT-615 sides is just slowly added into mixture, the pearly-lustre in mixture
Powder is precipitated quickly, it is impossible to obtain uniform pearl essence suspension.
Embodiment 6
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 63.16g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 13.94g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under conditions of being stirred vigorously of 1000-1500rpm, by 0.5g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 0.9g thickener Acrysol TT-615 sides is just slowly added into mixture, with uniform suspension shape
Formula obtains the ornamental protective coating of present invention offer.
Substrate surface by the ornamental protective coating with spray gun spraying needed for, dries 1-2 small naturally at room temperature
When after form one layer of glittering and strippable ornamental protective coating in substrate surface.
Embodiment 7
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 63.16g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 14.34g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under conditions of being stirred vigorously of 1000-1500rpm, by 0.5g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 0.5g thickener LM-275 sides is just slowly added into mixture, this is obtained in uniform suspension form
The ornamental protective coating for providing is provided.
Substrate surface by the ornamental protective coating with spray gun spraying needed for, dries 1-2 small naturally at room temperature
When after form one layer of glittering and strippable ornamental protective coating in substrate surface.
Embodiment 8
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 63.16g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 13.04g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under conditions of being stirred vigorously of 1000-1500rpm, by 0.5g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 1.8g thickener LM-275 sides is just slowly added into mixture, this is obtained in uniform suspension form
The ornamental protective coating for providing is provided.
Substrate surface by the ornamental protective coating with spray gun spraying needed for, dries 1-2 small naturally at room temperature
When after form one layer of glittering and strippable ornamental protective coating in substrate surface.
Comparative example 6
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 63.16g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 12.64g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under conditions of being stirred vigorously of 1000-1500rpm, by 0.5g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 2.2g thickener LM-275 sides is just slowly added into mixture, is obtained being difficult to flow and viscosity is very high
Suspension, it is impossible to which coating is for example sprayed.
Comparative example 7
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 63.16g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 12.64g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g thickener hydroxyethyl celluloses, hydroxyl second
Base cellulose reacts with other compositions, produces spawn, it is impossible to obtain uniform suspension.
Embodiment 9
Weigh and be calculated as the aqueous solution polyaminoester emulsion 8961 of 63.16g by polyether type aqueous polyurethane quality (concentration is
95wt%), rotating speed added under the stirring condition of 300-600rpm 13.54g deionized waters, 0.4g defoamers Byk-024,
0.4g wetting agent Byk-3455,0.4g dispersant Soja-Lecithin W250 and 0.3g rheology modifiers Rheolate 288,
To obtain uniform mixture.
The acetone of 20g is added in the mixture and is stirred until uniform.
In rotating speed under conditions of being stirred vigorously of 1000-1500rpm, by 0.5g pearl essence Ronastar Golden
Jewel is added slowly in mixture.
The stirring of 0.3g thickener Acrysol TT-615 and 1.0g thickener LM-275 sides is just slowly added into mixture
In, the ornamental protective coating of present invention offer is provided in uniform suspension form.
Substrate surface by the ornamental protective coating with spray gun spraying needed for, dries 1-2 small naturally at room temperature
When after form one layer of glittering and strippable ornamental protective coating in substrate surface.
The result of the test of examples and comparative examples of the present invention is listed in Table 2 below.
From table 2 it can be seen that the present invention provide ornamental protective coating comprising polyether type aqueous polyurethane, pearl essence,
Thickener and aqueous solvent, wherein the gross weight based on the coating, the content of the polyether type aqueous polyurethane is 50-70 weights
Amount %, the content of the pearl essence is 0.01-1 weight %, and the content of the thickener is 0.1-2 weight %, and the increasing
Thick dose selected from one or more in following group：The alkali solubility third of methyl diphenylene diisocyanate type urethane and hydrophobically modified
Olefin(e) acid based polymer.Ornamental protective coating prepared by the ornamental protective coating provided with the present invention, not only with excellent
Decoration performance or flash effect, and with excellent rippability.
Additionally, from table 2 it can be seen that in the ornamental protective coating that provides of the present invention, polyether type aqueous polyurethane contains
Amount cannot be below 50 weight %, otherwise may be existing because of shrinkage cavity with ornamental protective coating obtained in the ornamental protective coating
As and it is discontinuous, the content of polyether type aqueous polyurethane may otherwise make ornamental protective coating not above 70 weight %
Viscosity it is too high and be difficult to coating for example spray.The content of pearl essence has important shadow for the flash effect of coating of the invention
Ring, wherein, the content of pearl essence cannot be below 0.01 weight %, and otherwise coating may lose visible flash effect, pearly-lustre
The content of powder is easily reunited not above 1 weight %, otherwise pearl essence in coating, it is difficult to which coating obtains ornamental protection and applies
Layer.Additionally, the content of thickener cannot be below 0.1 weight %, the pearl essence in otherwise ornamental protective coating it may happen that
Precipitation, the content of thickener may otherwise make ornamental protective coating excessively sticky and be difficult to be coated with not above 2 weight %
For example spray.
Although for exemplary purposes, above-mentioned specific embodiment includes many details, this area is common
It should be understood to the one skilled in the art that many modifications of these details, change, replacement and change are in claimed model of the present invention
In enclosing.Therefore, the disclosure described in specific embodiment does not apply any limitation to the claimed present invention.
Proper range of the invention should be limited by claims and its appropriate legal equivalents.The bibliography of all references with
The mode of reference is incorporated by herein.
Claims (11)
1. a kind of ornamental protective coating, it includes polyether type aqueous polyurethane, pearl essence, thickener and aqueous solvent, wherein
Based on the gross weight of the coating, the content of the polyether type aqueous polyurethane is 50-70 weight %, the content of the pearl essence
It is 0.01-1 weight %, the content of the thickener is 0.1-2 weight %, and the thickener is selected from the one kind in following group
Or it is various：Alkali-soluble acrylic's polymer of methyl diphenylene diisocyanate type urethane and hydrophobically modified.
2. ornamental protective coating according to claim 1, the ornamental protective coating also includes additive, described to add
Plus agent is selected from one or more in following group：Rheology modifier, dispersant, wetting agent and defoamer.
3. ornamental protective coating according to claim 1, wherein the content of the polyether type aqueous polyurethane is 55-65
Weight %.
4. ornamental protective coating according to claim 1, wherein the content of the pearl essence is 0.1-0.5 weight %.
5. ornamental protective coating according to claim 1, wherein the thickener is methyl diphenylene diisocyanate
Type polyurethane, and the content of the thickener is 0.3-2 weight %.
6. ornamental protective coating according to claim 1, wherein alkali solubility propylene of the thickener for hydrophobically modified
Sour based polymer, and the content of the thickener is 0.1-1 weight %.
7. a kind of ornamental protective coating, it is to apply ornamental protective coating according to any one of claim 1 to 6
Obtained from cloth.
8. ornamental protective coating according to claim 7, wherein the visible reflectance of the coating is more than or equal to
20%.
9. a kind of method for preparing ornamental protective coating according to any one of claim 1 to 6, methods described includes
Following steps：
The polyether type aqueous polyurethane and the aqueous solvent are mixed to obtain the first mixture；
The pearl essence is mixed with first mixture to obtain the second mixture；With
The thickener is mixed with second mixture to obtain the ornamental protective coating.
10. method according to claim 9, wherein by polyether type aqueous polyurethane, aqueous solvent mix with additive with
The first mixture is obtained, the additive is selected from one or more in following group：Rheology modifier, dispersant, wetting agent and
Defoamer.
A kind of 11. methods for preparing ornamental protective coating, comprise the following steps：Coating is according to any one of claim 1 to 6
Described ornamental protective coating.
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| CN201410071797.4A CN103820018B (en) | 2014-02-28 | 2014-02-28 | Ornamental protective coating and its coating and their preparation method |
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| ATE482258T1 (en) * | 2004-04-27 | 2010-10-15 | Akzo Nobel Coatings Int Bv | PIGMENTED REMOVAL PAINT |
| WO2007108905A1 (en) * | 2006-03-17 | 2007-09-27 | 3M Innovative Properties Company | Liquid composition to generate a removable temporary protection film, based on aqueous dispersions of polyurethane |
| CN102676033A (en) * | 2012-01-15 | 2012-09-19 | 河南科技大学 | Aqueous strippable paint |
| CN102827537B (en) * | 2012-09-15 | 2014-12-17 | 合肥华清方兴表面技术有限公司 | Aqueous normal temperature curing peelable paint and preparation method of paint |
| CN102863894B (en) * | 2012-10-18 | 2014-09-17 | 中国海洋石油总公司 | Temporary protective paint composition for water base environment-friendly lens and preparation method of composition |
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