CN102993938A - Anti-sagging polyurethane white finish and main paint thereof - Google Patents
Anti-sagging polyurethane white finish and main paint thereof Download PDFInfo
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- CN102993938A CN102993938A CN2012105026263A CN201210502626A CN102993938A CN 102993938 A CN102993938 A CN 102993938A CN 2012105026263 A CN2012105026263 A CN 2012105026263A CN 201210502626 A CN201210502626 A CN 201210502626A CN 102993938 A CN102993938 A CN 102993938A
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- white finish
- finish paint
- polyurethane white
- lacquer
- sag prevention
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Abstract
The invention discloses anti-sagging polyurethane white finish. Main paint of the polyurethane white finish comprises the following components in parts by weight: 35-50 parts of short oil alkyd resin, 40-55 parts of titanium dioxide slurry with mass concentration of 60%, 5-8 parts of talcum powder, 0.1-0.5 part of polyether modified silicone oil leveling agent, 0.5-5 parts of fumed silica and 1-2 parts of solvent. Through the mixing of the components, the polyurethane white finish provided by the invention has proper surface tension and avoids frequent sagging and base exposure; and moreover, under the effect of surface tension, the paint film can be converted from an uneven surface into an even one.
Description
Technical field
The present invention relates to a kind of polyurethane paint, relate in particular to a kind of white polyurethane lacquer and main lacquer component thereof that does not produce the sagging phenomenon.
Background technology
The polyurethane paint paint film is tough, and gloss is plentiful, strong adhesion, and water proof and wearable, good corrosion resistance are widely used as the fields such as high-class woodenware coatings for furniture, metal coating material, electronic paint, speciality coating.
In the furniture lacquer market, the PU lacquer still accounts for main position at home, and wherein white series product occupation rate is the highest, and wherein, double-component polyurethane paint is most widely used.Double-component polyurethane paint generally is comprised of hydroxy-containing resin (main lacquer) and isocyanate prepolymer (solidifying agent), and in construction process, main lacquer and isocyanate prepolymer crosslinking reaction obtain polyurethane film.Cause drying varniss slow because reaction process is long; therefore, be easy to occur coating with lacquer the liquid downwards vestige of trickling, i.e. sagging phenomenon; especially be the easier generation in vertical surface and edges and corners; therefore, it is show-through after punching because of polishing that the corner often can be run into by Furniture Factory when constructing operation, and convex surface paint easily produces behind the construction finish paint show-through because tension force is low; sagging appears in the facade spraying; particularly winter temperature is low, and the slower phenomenon of product when spraying surface drying is more obvious, greatly reduces working efficiency and product quality.。
Therefore, in order to prevent the sagging phenomenon, usually need in polyurethane paint, add thixotropic agent, the first thixotropic agent is mineral filler, such as calcium carbonate, wilkinite, colloidal silica etc., the second thixotropic agent is organic compound, such as hydrogenated castor oil, aliphatic amide wax, tetrafluoroethylene etc.These thixotropic agent in use must add in a large number, with the increase sag resistance, so its apparent viscosity increase in applying process of urethane, be unfavorable for filming, and the polyurethane paint that contains these thixotropic agent is stored common poor stability; The third thixotropic agent is aminated compounds, and such as polyoxyalkylene polyamines, aliphatics cycloalkanes diamines etc., thixotropy needs several seconds even several minutes but polyisocyanates and amine are mixed into generation, in the high pressure application situation of the working efficiency of having relatively high expectations, does not possess practicality.
As seen, still need a kind of polyurethane paint that can reduce as far as possible or eliminate the sagging phenomenon.
Summary of the invention
Occur easily sagging and show-through disadvantage when being sprayed on corner, convex surface ground and facade for present polyurethane finish, the invention provides a kind of polyurethane white finish paint and main lacquer component thereof of sag prevention.
First purpose of the present invention provides a kind of sag prevention polyurethane white finish paint master lacquer.
Described sag prevention polyurethane white finish paint master lacquer, according to following weight proportion, component comprises:
Short oil-ity alcohol acid resin 35 ~ 50 is such as 40,50;
60% mass concentration titanium dioxide slurry 40 ~ 55 is such as 45,48,52;
Talcum powder 5 ~ 8 is such as 6,7;
Polyether modified silicon oil flow agent 0.1 ~ 0.5 is such as 0.2,0.3,0.4;
Aerosil 0.5 ~ 5;
Solvent 1 ~ 2.
In the preferred embodiment of sag prevention polyurethane white finish paint master lacquer of the present invention, according to following weight proportion, component comprises:
Short oil-ity alcohol acid resin 40;
60% mass concentration titanium dioxide slurry 48;
Talcum powder 6;
Polyether modified silicon oil flow agent 0.3;
Aerosil 0.5 ~ 5;
Solvent 1 ~ 2.
Wherein, the talcum powder particle diameter is preferably 2500 orders ~ 4500 orders, and more preferably 2800 ~ 3500 orders most preferably are 3000 orders.
Wherein, described polyether modified silicon oil is to be obtained by polyethers and dialkylsiloxane graft copolymerization.
Described polyethers is selected from polyethylene oxide or polyoxyethylene glycol, any one in oxyethane/epoxy second propane multipolymer, the poly(propylene oxide) or arbitrarily several combination.
In the described dialkylsiloxane, alkyl is any one or the arbitrarily several combination in C1 ~ C3 alkyl.
Described pfpe molecule amount is preferably 400 ~ 6000, is preferably 2000 ~ 4000.
Wherein, in the described polyether modified silicon oil, dialkylsiloxane link number is preferably 50 ~ 100.
Wherein, described short oil-ity alcohol acid resin is preferably and is selected from soybean oil Synolac, oleum lini Synolac, more preferably soybean oil Synolac.
Wherein, described solvent can be any useable solvents, is preferably toluene, dimethylbenzene, ethyl acetate, butylacetate.
In the above-mentioned polyurethane white finish paint master lacquer of the present invention, can also comprise auxiliary agent, according to following weight proportion, described sag prevention polyurethane white finish paint master coats with lacquer component and comprises:
Short oil-ity alcohol acid resin 35 ~ 50 is such as 40,50;
60% mass concentration titanium dioxide slurry 40 ~ 55 is such as 45,48,52;
Talcum powder 5 ~ 8 is such as 6,7;
Polyether modified silicon oil flow agent 0.1 ~ 0.5 is such as 0.2,0.3,0.4;
Aerosil 0.5 ~ 5;
Solvent 1 ~ 2;
Auxiliary agent 0.3 ~ 1.
Wherein, described auxiliary agent such as softening agent, antioxidant, photostabilizer, defoamer etc.
Second purpose of the present invention provides a kind of sag prevention polyurethane white finish paint, described polyurethane white finish paint is double-component polyurethane paint, comprises above-mentioned any one main lacquer, also comprises solidifying agent, described solidifying agent is a kind of isocyanate prepolymer, perhaps the mixture of multiple isocyanate prepolymer.
Among the present invention, isocyanate prepolymer refers to, isocyanic ester and polyvalent alcohol (such as dibasic alcohol, trivalent alcohol, tetravalent alcohol) adduct, but also can be isocyanic ester polymer (such as dimer, tripolymer).
Described isocyanate prepolymer can be aromatic isocyanate prepolymer, aliphatic isocyanates prepolymer or alicyclic isocyanate prepolymer, and can diisocyanate prepolymer or polyisocyanate prepolymers, most preferably be diisocyanate prepolymer, isocyanate prepolymer is selected from toluene diisocyanate prepolymer, diphenylmethane diisocyanate prepolymer, hexamethylene diisocyanate prepolymer as described.
Sag prevention polyurethane white finish paint provided by the present invention, solid content are 75wt%, apparently higher than common PU lacquer solid content, have reduced the pollution that solvent evaporates is brought.
Polyurethane white finish paint provided by the present invention after each component cooperates, has suitable surface tension, be difficult for sagging, show-through, even paint film can change flat surface into by unfairness under surface tension effects.
Embodiment
The invention provides a kind of sag prevention polyurethane white finish paint, the main lacquer of described sag prevention polyurethane white finish paint, according to following weight proportion, component comprises:
Short oil-ity alcohol acid resin 35 ~ 50;
60% mass concentration titanium dioxide slurry 40 ~ 55;
Talcum powder 5 ~ 8;
Polyether modified silicon oil flow agent 0.1 ~ 0.5;
Aerosil 0.5 ~ 5;
Solvent 1 ~ 2.
The talcum powder main component is the moisture Magnesium Silicate q-agent of talcum, and molecular formula is Mg
3(Si
4O
10) (OH)
2Talcum belongs to oblique system, and crystal is the sheet of false six sides or rhombus, is generally fine and close bulk, foliated lamellar, radial, fibrous agrregate, water white transparency or white.Good physics, the chemical propertys such as talcum has that oilness, resistivity against fire, resistance to acid, insulativity, fusing point height, chemical torpescence, opacifying power are good, softness, good luster, adsorptive power are strong, oil number is slightly large in product, the present invention is used as thixotropic agent, find that talcum powder plays a key effect to the product thixotropy.
The polyether modified silicon oil flow agent has the surface tension lower than system, and limited with the consistency of system, join in the polyurethane white finish paint of the present invention as flow agent, find, the spontaneous surface of moving to paint film of polyether modified silicon oil flow agent meeting, and form one on the surface and have the fixedly unimolecular film of homogeneous surface tension force, this unimolecular film has guaranteed that the surface tension of paint film can not change along with the variation (such as curing, solvent evaporates etc.) of paint film, thereby has guaranteed that paint film can change even curface into by unfairness under capillary effect.
Below by specific embodiment sag prevention polyurethane white finish paint of the present invention is described in detail.
Embodiment 1
In the present embodiment, the component of the main lacquer of sag prevention polyurethane white finish paint comprises:
Short oil-ity alcohol acid resin 40kg;
60% mass concentration titanium dioxide slurry 48kg;
Talcum powder 6kg;
Polyether modified silicon oil flow agent 0.3kg;
Aerosil 0.5kg;
Dimethylbenzene 1kg;
Defoamer 1kg.
The talcum powder fineness is 3000 orders.
Embodiment 2
In the present embodiment, the component of the main lacquer of sag prevention polyurethane white finish paint comprises:
Short oil-ity alcohol acid resin 40kg;
60% mass concentration titanium dioxide slurry 48kg;
Talcum powder 6kg;
Polyether modified silicon oil flow agent 0.3kg;
Aerosil 2 kg;
Ethyl acetate 2kg;
Antioxidant 0.5kg.
The talcum powder fineness is 3000 orders.
Embodiment 3
In the present embodiment, the component of the main lacquer of sag prevention polyurethane white finish paint comprises:
Short oil-ity alcohol acid resin 40kg;
60% mass concentration titanium dioxide slurry 48kg;
Talcum powder 6kg;
Polyether modified silicon oil flow agent 0.3kg;
Aerosil 5 kg;
Toluene 1.5kg;
Defoamer 0.3kg;
Antioxidant 0.2kg.
The talcum powder fineness is 3000 orders.
Embodiment 4
In the present embodiment, the component of the main lacquer of sag prevention polyurethane white finish paint comprises:
Short oil-ity alcohol acid resin 35kg;
60% mass concentration titanium dioxide slurry 42kg;
Talcum powder 8kg;
Polyether modified silicon oil flow agent 0.1kg;
Aerosil 1 kg;
Butylacetate 2kg.
The talcum powder fineness is 3000 orders.
Embodiment 5
In the present embodiment, the component of the main lacquer of sag prevention polyurethane white finish paint comprises:
Short oil-ity alcohol acid resin 45kg;
60% mass concentration titanium dioxide slurry 55kg;
Talcum powder 7kg;
Polyether modified silicon oil flow agent 0.4kg;
Aerosil 3 kg;
Ethyl acetate 1.3kg.
The talcum powder fineness is 3000 orders.
Comparative Examples 1
The component of the main lacquer of polyurethane white finish paint comprises:
Short oil-ity alcohol acid resin 45kg;
60% mass concentration titanium dioxide slurry 55kg;
Silica colloidal 7kg;
Polyacrylate(s) flow agent 0.4kg;
Aerosil 3 kg;
Ethyl acetate 1.3kg.
Comparative Examples 2
The component of the main lacquer of polyurethane white finish paint comprises:
Short oil-ity alcohol acid resin 45kg;
60% mass concentration titanium dioxide slurry 55kg;
Silica colloidal 20kg;
Polyacrylate(s) flow agent 0.4kg;
Aerosil 3 kg;
Ethyl acetate 1.3kg.
The talcum powder fineness is 3000 orders.Main lacquer with preparing in above-described embodiment and the Comparative Examples mixes with isocyanate prepolymer respectively, films on a vertical plane planeness and the sagging phenomenon of dry rear contrast paint film.
In the Comparative Examples, in the situation of thixotropic agent silica colloidal large usage quantity, the sagging phenomenon reduces, but the time of filming obviously prolongs.
Compare with Comparative Examples, the main lacquer that provides in the above embodiment of the present invention mixed with isocyanate prepolymer and filmed, and the sagging phenomenon all disappears substantially, and because the thixotropic agent add-on is few, the time of filming is shorter.
In the above embodiment of the present invention, sag prevention polyurethane white finish paint solid content all can reach about 75wt%, apparently higher than common PU lacquer solid content, has reduced the pollution that solvent evaporates is brought.
More than specific embodiments of the invention are described in detail, but it is just as example, the present invention is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that the present invention is carried out and substituting also all among category of the present invention.Therefore, not breaking away from impartial conversion and the modification of doing under the spirit and scope of the present invention, all should contain within the scope of the invention.
Claims (10)
1. a sag prevention polyurethane white finish paint master coats with lacquer, and it is characterized in that according to following weight proportion, component comprises:
Short oil-ity alcohol acid resin 35 ~ 50;
60% mass concentration titanium dioxide slurry 40 ~ 55;
Talcum powder 5 ~ 8;
Polyether modified silicon oil flow agent 0.1 ~ 0.5;
Aerosil 0.5 ~ 5;
Solvent 1 ~ 2.
2. sag prevention polyurethane white finish paint master lacquer according to claim 1 is characterized in that described talcum powder particle diameter is 2500 orders ~ 4500 orders.
3. sag prevention polyurethane white finish paint master lacquer according to claim 1 is characterized in that described short oil-ity alcohol acid resin is the soybean oil Synolac.
4. sag prevention polyurethane white finish paint master lacquer according to claim 1 is characterized in that described polyether modified silicon oil is to be obtained by polyethers and dialkylsiloxane graft copolymerization; Described polyethers is selected from polyethylene oxide or polyoxyethylene glycol, any one in oxyethane/epoxy second propane multipolymer, the poly(propylene oxide) or arbitrarily several combination; In the described dialkylsiloxane, alkyl is any one or the arbitrarily several combination in C1 ~ C3 alkyl.
5. sag prevention polyurethane white finish paint master according to claim 1 coats with lacquer, and it is characterized in that according to following weight proportion, component comprises:
Short oil-ity alcohol acid resin 40;
60% mass concentration titanium dioxide slurry 48;
Talcum powder 6;
Polyether modified silicon oil flow agent 0.3;
Aerosil 0.5 ~ 5;
Solvent 1 ~ 2.
6. the described sag prevention polyurethane white finish paint of any one master lacquer according to claim 1 ~ 5 is characterized in that also comprise auxiliary agent, according to following weight proportion, described sag prevention polyurethane white finish paint master coats with lacquer component and comprises:
Short oil-ity alcohol acid resin 35 ~ 50;
60% mass concentration titanium dioxide slurry 40 ~ 55;
Talcum powder 5 ~ 8;
Polyether modified silicon oil flow agent 0.1 ~ 0.5;
Aerosil 0.5 ~ 5;
Solvent 1 ~ 2;
Auxiliary agent 0.3 ~ 1.
7. sag prevention polyurethane white finish paint master according to claim 6 lacquer is characterized in that, described auxiliary agent is selected from any one or any several mixture in softening agent, antioxidant, photostabilizer, the defoamer.
8. a sag prevention polyurethane white finish paint is characterized in that, comprises main lacquer claimed in claim 1, also comprises solidifying agent, and described solidifying agent is a kind of isocyanate prepolymer, perhaps the mixture of multiple isocyanate prepolymer.
9. sag prevention polyurethane white finish paint according to claim 8 is characterized in that, described isocyanate prepolymer is diisocyanate prepolymer.
10. sag prevention polyurethane white finish paint according to claim 9 is characterized in that, described isocyanate prepolymer is selected from toluene diisocyanate prepolymer, diphenylmethane diisocyanate prepolymer, hexamethylene diisocyanate prepolymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502626.3A CN102993938B (en) | 2012-11-30 | 2012-11-30 | Sag prevention polyurethane white finish paint and main paint thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502626.3A CN102993938B (en) | 2012-11-30 | 2012-11-30 | Sag prevention polyurethane white finish paint and main paint thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102993938A true CN102993938A (en) | 2013-03-27 |
| CN102993938B CN102993938B (en) | 2015-10-28 |
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| CN201210502626.3A Active CN102993938B (en) | 2012-11-30 | 2012-11-30 | Sag prevention polyurethane white finish paint and main paint thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104277689A (en) * | 2014-09-16 | 2015-01-14 | 英德市雅家涂料有限公司 | Peeling paint applied to antique reproduction furniture and production method of peeling paint |
| CN104530955A (en) * | 2014-12-23 | 2015-04-22 | 江苏凯伦建材股份有限公司 | Anti-sagging polyurethane waterproof coating |
| CN107868594A (en) * | 2017-12-07 | 2018-04-03 | 江苏足迹涂料有限公司 | A kind of pre- solidifying slurry of high sag resistance and preparation method thereof |
| CN113845828A (en) * | 2021-09-16 | 2021-12-28 | 深圳市卓宝科技股份有限公司 | Waterborne polyurethane waterproof coating with anti-sagging function |
| CN114231137A (en) * | 2021-12-27 | 2022-03-25 | 武汉格林鸿业新材料科技有限公司 | Solvent-free self-cleaning UV resin environment-friendly coating and preparation method thereof |
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| CN102533070A (en) * | 2011-12-31 | 2012-07-04 | 广州立邦涂料有限公司 | Luminant white paint and preparation method thereof |
| CN102643586A (en) * | 2012-05-08 | 2012-08-22 | 合众（佛山）化工有限公司 | High-solid-content quick-drying water-based white primer and preparation method thereof |
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Patent Citations (3)
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| US5438085A (en) * | 1992-06-12 | 1995-08-01 | Burkett; John | Simulated leather-like coating for a vehicle substrate |
| CN102533070A (en) * | 2011-12-31 | 2012-07-04 | 广州立邦涂料有限公司 | Luminant white paint and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104277689A (en) * | 2014-09-16 | 2015-01-14 | 英德市雅家涂料有限公司 | Peeling paint applied to antique reproduction furniture and production method of peeling paint |
| CN104530955A (en) * | 2014-12-23 | 2015-04-22 | 江苏凯伦建材股份有限公司 | Anti-sagging polyurethane waterproof coating |
| CN107868594A (en) * | 2017-12-07 | 2018-04-03 | 江苏足迹涂料有限公司 | A kind of pre- solidifying slurry of high sag resistance and preparation method thereof |
| CN113845828A (en) * | 2021-09-16 | 2021-12-28 | 深圳市卓宝科技股份有限公司 | Waterborne polyurethane waterproof coating with anti-sagging function |
| CN113845828B (en) * | 2021-09-16 | 2022-08-09 | 深圳市卓宝科技股份有限公司 | Waterborne polyurethane waterproof coating with anti-sagging function |
| CN114231137A (en) * | 2021-12-27 | 2022-03-25 | 武汉格林鸿业新材料科技有限公司 | Solvent-free self-cleaning UV resin environment-friendly coating and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102993938B (en) | 2015-10-28 |
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Address after: 201506 No. 578 Xia Sheng Road, Jinshan District, Shanghai Patentee after: Shanghai Libang Changrunfa Coatings Co., Ltd. Address before: 201506 No. 578 Xia Sheng Road, Jinshan District, Shanghai Patentee before: Shanghai Changrunfa Paint Co., Ltd. |
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