CN111909610A - Polyurethane waterproof coating and preparation method thereof - Google Patents
Polyurethane waterproof coating and preparation method thereof Download PDFInfo
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- CN111909610A CN111909610A CN202010819046.1A CN202010819046A CN111909610A CN 111909610 A CN111909610 A CN 111909610A CN 202010819046 A CN202010819046 A CN 202010819046A CN 111909610 A CN111909610 A CN 111909610A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
Abstract
The invention relates to a polyurethane waterproof coating and a preparation method thereof, wherein the polyurethane waterproof coating is prepared from the following raw materials in parts by weight: 9.43 to 10.43 parts of water, 0.01 to 0.05 part of PH regulator, 0.06 to 0.09 part of hydroxyethyl cellulose, 44 to 48 parts of aqueous polyurethane emulsion, 0.1 to 0.4 part of preservative, 0.5 to 1 part of wetting dispersant, 0.5 to 1 part of defoamer, 2 to 8 parts of titanium dioxide, 2 to 8 parts of mica powder, 28.21 to 31.21 parts of barium sulfate, 0.2 to 0.6 part of film-forming assistant, 0.8 to 1.1 part of antifreeze agent and 0.35 to 0.65 part of thickener. The waterproof coating inherits the advantages of high strength and high toughness of the oil-based polyurethane waterproof coating, simplifies construction conditions, and has the performances of high strength, high toughness, low VOC, high environmental protection, easy construction and excellent waterproofness.
Description
Technical Field
The invention relates to a polyurethane waterproof coating and a preparation method thereof, belonging to the field of building waterproof materials.
Background
The traditional solvent-based waterproof coating has limitations when used in areas such as indoor home, closed narrow space, wet base surface and the like due to high VOC, flammability, harsh construction and the like; meanwhile, due to the soundness of environmental regulations and the enhancement of environmental awareness of people, the emission of Volatile Organic Compounds (VOC) in the traditional solvent type polyurethane coating is more and more strictly limited. Therefore, the preparation of the low-VOC waterproof waterborne polyurethane coating is very important.
Disclosure of Invention
The invention provides a polyurethane waterproof coating and a preparation method thereof.
The invention is realized by the following technical scheme:
the polyurethane waterproof paint is prepared from the following raw materials in parts by weight
Further, the used water is deionized water, and is used as a dispersion for dispersing the pigment and the filler and also used as a carrier for thickening the thickening agent;
furthermore, the pH regulator adopts 2-amino-2-methyl-1-propanol which mainly plays a role in maintaining and regulating the pH value of the whole system;
further, hydroxyethyl cellulose employs a non-ionic water-soluble cellulose ether, which provides primarily its initial viscosity while providing storage stability for later periods of the coating.
Furthermore, the waterborne polyurethane emulsion is aliphatic polyether waterborne polyurethane emulsion, is a main film forming substance of the coating and provides tensile strength and elongation. pH: 6.8, viscosity: 10-1000 mPas, solid content: 50.8%, tensile strength: 37MPa, elongation at break: 1000%, 100% modulus: 2.6 MPa.
Furthermore, the preservative is tetrachloroisophthalonitrile emulsion, which mainly plays a role in corrosion prevention and sterilization on the coating and ensures the long-term storage stability of the coating.
Furthermore, the wetting dispersant adopts polyacrylic ammonium salt, which mainly performs rapid wetting action on the coating system and is beneficial to uniformly dispersing the pigment and filler into the system.
Furthermore, the foam inhibitor is a mixture of organic silicon and mineral oil, and can inhibit the generation of bubbles in the proofing process, change the surface tension of the system and eliminate the generated bubbles.
Furthermore, the titanium dioxide is rutile titanium dioxide which is mainly used as a pigment filler to fill the coating and improve the glossiness of the coating.
Furthermore, the mica powder adopts 1250-mesh white mica powder which is mainly used as a pigment and a filler, and simultaneously, the three-dimensional octahedral surrounding structure of the mica powder has an anti-cracking effect.
Further, the barium sulfate is 1250-mesh modified barium sulfate, is mainly used as a pigment and filler, and plays roles in filling and reducing cost.
Furthermore, the film-forming assistant is dipropylene glycol butyl ether, and a complete and compact film can be formed at the temperature of 5 ℃ by adding a proper amount of the film-forming assistant.
Furthermore, the anti-freezing agent is a triphenylethylene phenol ethoxy compound, and the high boiling point and low VOC of the anti-freezing agent ensure that the coating does not have additional VOC and ensure the storage property of the coating at low temperature.
Further, the thickener is a nonionic associative thickener modified by hydrophobic groups. It features no organic tin and APEO compound, high filming effect and low viscosity. The coating material can change the viscosity of the product while providing certain leveling property for the coating material, so that the coating material has good brushing property.
A preparation method of the waterborne polyurethane waterproof coating comprises the following steps
Firstly, adding water into a dispersion cylinder, then adding a pH regulator and hydroxyethyl cellulose, and then dispersing for 5-10min at the rotation speed of 300-450 r/min;
then adding the aqueous polyurethane emulsion, the preservative, the wetting dispersant and the defoamer, adjusting the rotating speed to be 650r/min and dispersing for 5-10min at the rotating speed;
then adjusting the rotating speed to 900-1200r/min, adding titanium dioxide for 2-3 times, and then continuously dispersing for 15-20 min;
then reducing the rotating speed to 800-;
finally, adding the film forming additive, the antifreeze and the thickener at the rotating speed of 500 plus materials and 750r/min, and continuously dispersing for 15-30min to obtain the coating.
Compared with the prior art, the invention has the following beneficial effects: the waterborne polyurethane waterproof coating disclosed by the invention belongs to a first real waterborne polyurethane waterproof coating in the industry, inherits the advantages of high strength and high toughness of the oil-based polyurethane waterproof coating, simplifies the construction conditions, and has the performances of high strength, high toughness, low VOC, high environmental protection, easiness in construction and excellent waterproofness.
Detailed description of the preferred embodiments
The starting materials for the following examples are preferably as follows:
water: deionized water in general;
pH regulators: adopts the modesty AMP-95 which is sold on the market;
hydroxyethyl cellulose: adopts Suanqiang 250HBR which is commercially available;
aqueous polyurethane emulsion: wanhua chemical 7351 aliphatic polyether waterborne polyurethane emulsion is adopted and sold in the market;
preservative: r-s product from thor corporation, commercially available;
wetting and dispersing agent: rohm and Hass 731A was mixed with CA-25001:1, two defoamers were commercially available;
defoaming agent: pasteur FoamStar ST 2410 was used in combination with Kening 3341:1, both antifoams being commercially available;
titanium dioxide: rutile type R-996 titanium dioxide of the Tetrapython group is commercially available;
mica powder: adopts mica powder YM-1250B available from Shanghai Shuangrun chemical industry Co., Ltd;
barium sulfate: adopts the superfine barium sulfate CB-1250A sold in Shanghai Shuangrun chemical company Limited, which is commercially available;
film-forming auxiliary agent: adopts a Dow chemical DPnB film-forming auxiliary agent which is sold on the market;
an antifreeze agent: FT100 high-boiling antifreeze agent of Rodiya company is adopted and is commercially available;
thickening agent: adopts Rohm and Hass RM2020 polyurethane thickening agent which is sold in the market;
the present invention will be further described with reference to the following examples.
Example 1
An embodiment 1 of the waterborne polyurethane waterproof coating is prepared from the following raw materials in parts by weight:
the manufacturing process comprises the following steps:
(1) adding water into a dispersion cylinder, sequentially adding a pH regulator and hydroxyethyl cellulose, controlling the rotating speed within 300r/min, and continuously dispersing for 10 min;
(2) slowly adding the aqueous polyurethane emulsion, the preservative, the wetting dispersant and the defoaming agent, adjusting the rotating speed to 400r/min, and continuously dispersing for 10 min;
(3) increasing the rotating speed to 900r/min, adding titanium dioxide in batches, and continuously dispersing for 20 min;
(4) reducing the rotating speed to 800r/min, sequentially and slowly adding the mica powder and the barium sulfate, and continuously dispersing for 25 min;
(5) adding film forming assistant, antifreeze agent and thickener at 500r/min, and continuously dispersing for 15min until the liquid is uniform and particle-free white mixture.
Example 2
An embodiment 2 of a waterborne polyurethane waterproof coating comprises the following specific raw materials in parts by weight:
the manufacturing process comprises the following steps:
(1) adding water into a dispersion cylinder, sequentially adding a pH regulator and hydroxyethyl cellulose, controlling the rotating speed within 400r/min, and continuously dispersing for 10 min;
(2) slowly adding the aqueous polyurethane emulsion, the preservative, the wetting dispersant and the defoaming agent, adjusting the rotating speed to be within the range of 500r/min, and continuously dispersing for 10 min;
(3) increasing the rotating speed to 950r/min, adding titanium dioxide in batches, and continuously dispersing for 15 min;
(4) reducing the rotating speed to 750r/min, sequentially and slowly adding the mica powder and the barium sulfate, and continuously dispersing for 20 min;
(5) adding film forming assistant, antifreeze agent and thickener at a rotating speed of 600r/min, and continuously dispersing for 15min until the liquid is a uniform white mixture without particles.
Example 3
The invention relates to an embodiment 3 of a water-based polyurethane waterproof coating, which comprises the following specific raw materials in parts by weight:
the manufacturing process comprises the following steps:
firstly, adding water into a dispersion cylinder, then adding a pH regulator and hydroxyethyl cellulose, and then dispersing for 10min at the rotating speed of 300 r/min;
then adding the aqueous polyurethane emulsion, the preservative, the wetting dispersant and the defoaming agent, adjusting the rotating speed to 400r/min and dispersing for 10min at the rotating speed;
then adjusting the rotating speed to 900r/min, adding titanium dioxide for 2 times, and then continuously dispersing for 20 min;
then, reducing the rotating speed to 800r/min, sequentially and slowly adding the mica powder and the barium sulfate, and then continuously dispersing for 25 min;
and finally, adding the film forming aid, the antifreeze and the thickener at the rotating speed of 500r/min, and continuously dispersing for 30min to obtain the coating.
Example 4
An embodiment 4 of the waterborne polyurethane waterproof coating comprises the following specific raw materials in parts by weight:
the manufacturing process comprises the following steps:
firstly, adding water into a dispersion cylinder, then adding a pH regulator and hydroxyethyl cellulose, and then dispersing for 5min at the rotating speed of 450 r/min;
then adding the aqueous polyurethane emulsion, the preservative, the wetting dispersant and the defoaming agent, adjusting the rotating speed to 650r/min and dispersing for 5min at the rotating speed;
then adjusting the rotating speed to 1200r/min, adding titanium dioxide for 2 times, and then continuously dispersing for 15 min;
then reducing the rotating speed to 1000r/min, sequentially and slowly adding the mica powder and the barium sulfate, and then continuously dispersing for 10 min;
and finally, adding the film forming aid, the antifreeze agent and the thickening agent at the rotating speed of 750r/min, and continuously dispersing for 15min to obtain the coating.
As the waterborne polyurethane waterproof coating belongs to a product which is first pushed by the industry and does not use related standards, the data and standard data obtained by performing maintenance tests on various schemes of the waterborne polyurethane waterproof coating prepared by the invention according to the requirements of JC/T2415-2017 on waterproof coating films under ceramic tile bonding layers are shown in the following table:
table one: test results of each protocol
As can be seen from the first table, the test of each example of the waterborne polyurethane waterproof coating of the invention according to the requirement that JC/T2415-2017 is used for a waterproof coating film under a ceramic tile bonding layer is higher than the standard, wherein the best example 1 is provided.
According to the scheme of the invention, the physical property test comparison is carried out according to the detection requirement of GB/T19250-2013 polyurethane waterproof coating type I, and the test data is as follows:
table two: test results of the examples
From the second table, physical property tests are carried out on each embodiment of the waterborne polyurethane waterproof coating according to the type I detection requirements of GB/T19250-2013 polyurethane waterproof coating, each embodiment is higher than the standard and has rich, and the strength and the elongation at break of each embodiment are higher than those of the same type oily polyurethane waterproof coating, wherein the embodiment 1 is the best.
According to each scheme of the waterborne polyurethane waterproof coating, detection is carried out according to a standard method of JC 1066-.
In conclusion, in the embodiments 1 to 4 of the waterborne polyurethane waterproof coating of the invention, no VOC, free formaldehyde and benzene series are detected, the physical tensile strength, the elongation at break and the tear strength of the waterborne polyurethane waterproof coating exceed the I-type oily polyurethane standard of GB/T19250-2013 polyurethane waterproof coating, and the comprehensive performance of the waterborne polyurethane waterproof coating reaches and exceeds the waterproof coating standard of JC/T2415-2017 used under a ceramic tile bonding layer, wherein the embodiment 1 is the best.
The waterborne polyurethane waterproof coating inherits the high physical properties of the oily polyurethane waterproof coating, has the advantages of low VOC, green, healthy and environment-friendly property, simple and convenient construction and excellent waterproof effect, accords with the trend of changing oil into water in the industry, and meets the increasingly severe environment-friendly method.
The above embodiments are only some of the embodiments of the present invention, but the spirit of the present invention is not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the claims of the present invention.
Claims (10)
1. The waterborne polyurethane waterproof coating is characterized by comprising the following components in percentage by weight: the composite material is mainly prepared from the following raw materials in parts by weight:
2. the aqueous polyurethane waterproof coating material according to claim 1, characterized in that: the pH regulator adopts 2-amino-2-methyl-1-propanol.
3. The aqueous polyurethane waterproof coating material according to claim 1, characterized in that: the hydroxyethyl cellulose adopts nonionic water-soluble cellulose ether.
4. The aqueous polyurethane waterproof coating material according to claim 1, characterized in that: the water-based polyurethane emulsion adopts aliphatic polyether polyurethane emulsion.
5. The aqueous polyurethane waterproof coating material according to claim 1, characterized in that: the preservative adopts tetrachloroisophthalonitrile emulsion;
the dispersing and wetting agent adopts polyacrylic acid ammonium salt or sodium polyacrylate salt wetting and dispersing agent;
the defoaming agent is mineral oil or organic silicon defoaming agent.
6. The aqueous polyurethane waterproof coating material according to claim 1, characterized in that: the titanium dioxide adopts anatase type titanium dioxide or rutile type titanium dioxide;
the mica powder is muscovite powder or sericite powder;
the barium sulfate is modified barium sulfate.
7. The aqueous polyurethane waterproof coating material according to claim 1, characterized in that: the film-forming aid adopts dipropylene glycol butyl ether.
8. The aqueous polyurethane waterproof coating material according to claim 1, characterized in that: the antifreeze agent adopts glycerol ethoxylate antifreeze agent.
9. The aqueous polyurethane waterproof coating material according to claim 1, characterized in that: the thickening agent adopts nonionic polyurethane thickening agent.
10. The method for preparing an aqueous polyurethane waterproofing paint according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
firstly, adding water, a pH regulator and hydroxyethyl cellulose into a dispersion cylinder, and dispersing for 5-10min at the rotation speed of 300-450 r/min;
secondly, adding the aqueous polyurethane emulsion, the preservative, the wetting dispersant and the defoaming agent, adjusting the rotating speed to 400-650r/min and dispersing for 5-10min at the rotating speed;
thirdly, adjusting the rotating speed to 900-;
fourthly, the rotating speed is reduced to 800-;
finally, adding the film forming additive, the antifreeze and the thickener at the rotating speed of 500 plus 750r/min, and continuously dispersing for 15-30min to obtain the coating.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112940598A (en) * | 2021-03-09 | 2021-06-11 | 上海三棵树防水技术有限公司 | Super-hydrophobic water-based polyurethane waterproof coating and preparation method thereof |
| CN113185908A (en) * | 2021-06-18 | 2021-07-30 | 河北三棵树涂料有限公司 | High-performance reflective heat-insulation water-based exterior wall elastic coating and preparation method thereof |
| CN113249020A (en) * | 2021-05-19 | 2021-08-13 | 上海三棵树防水技术有限公司 | High-stain-resistance sewage-water-resistant polyurethane waterproof coating and preparation method thereof |
| CN113511855A (en) * | 2021-04-16 | 2021-10-19 | 湖北三棵树新材料科技有限公司 | Two-component waterborne polyurethane mortar waterproof coating and preparation method thereof |
| CN113717624A (en) * | 2021-08-20 | 2021-11-30 | 河南金拇指防水科技有限公司 | Environment-friendly waterborne polyurethane waterproof coating and preparation method thereof |
| CN113773734A (en) * | 2021-08-18 | 2021-12-10 | 北新禹王防水科技集团有限公司 | Water-based polyurethane waterproof coating |
| CN113801556A (en) * | 2021-09-23 | 2021-12-17 | 河北三棵树涂料有限公司 | Waterborne polyurethane elastic coating with waterproof function 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 |
| CN114316766A (en) * | 2021-12-09 | 2022-04-12 | 河南三棵树新材料科技有限公司 | Hydrophobic stain-resistant polyurethane interior wall coating and preparation method thereof |
| CN115926607A (en) * | 2022-12-29 | 2023-04-07 | 湖北三棵树新材料科技有限公司 | Bio-based stain-resistant exposed waterborne polyurethane waterproof coating and preparation method thereof |
| CN115926607B (en) * | 2022-12-29 | 2024-05-17 | 湖北三棵树新材料科技有限公司 | Bio-based stain-resistant exposed water-based polyurethane waterproof coating and preparation method thereof |
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Cited By (12)
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| CN112940598A (en) * | 2021-03-09 | 2021-06-11 | 上海三棵树防水技术有限公司 | Super-hydrophobic water-based polyurethane waterproof coating and preparation method thereof |
| CN113511855A (en) * | 2021-04-16 | 2021-10-19 | 湖北三棵树新材料科技有限公司 | Two-component waterborne polyurethane mortar waterproof coating and preparation method thereof |
| CN113249020A (en) * | 2021-05-19 | 2021-08-13 | 上海三棵树防水技术有限公司 | High-stain-resistance sewage-water-resistant polyurethane waterproof coating and preparation method thereof |
| CN113185908A (en) * | 2021-06-18 | 2021-07-30 | 河北三棵树涂料有限公司 | High-performance reflective heat-insulation water-based exterior wall elastic coating and preparation method thereof |
| CN113773734A (en) * | 2021-08-18 | 2021-12-10 | 北新禹王防水科技集团有限公司 | Water-based polyurethane waterproof coating |
| CN113717624A (en) * | 2021-08-20 | 2021-11-30 | 河南金拇指防水科技有限公司 | Environment-friendly waterborne polyurethane waterproof coating 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 |
| CN113801556A (en) * | 2021-09-23 | 2021-12-17 | 河北三棵树涂料有限公司 | Waterborne polyurethane elastic coating with waterproof function and preparation method thereof |
| CN114316766A (en) * | 2021-12-09 | 2022-04-12 | 河南三棵树新材料科技有限公司 | Hydrophobic stain-resistant polyurethane interior wall coating and preparation method thereof |
| CN115926607A (en) * | 2022-12-29 | 2023-04-07 | 湖北三棵树新材料科技有限公司 | Bio-based stain-resistant exposed waterborne polyurethane waterproof coating and preparation method thereof |
| CN115926607B (en) * | 2022-12-29 | 2024-05-17 | 湖北三棵树新材料科技有限公司 | Bio-based stain-resistant exposed water-based polyurethane waterproof coating and preparation method thereof |
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