CN116253855A - Butanone-resistant waterborne polyurethane resin for PET film and preparation method thereof - Google Patents
Butanone-resistant waterborne polyurethane resin for PET film and preparation method thereof Download PDFInfo
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- CN116253855A CN116253855A CN202310222011.3A CN202310222011A CN116253855A CN 116253855 A CN116253855 A CN 116253855A CN 202310222011 A CN202310222011 A CN 202310222011A CN 116253855 A CN116253855 A CN 116253855A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6659—Compounds of group C08G18/42 with compounds of group C08G18/34
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0838—Manufacture of polymers in the presence of non-reactive compounds
- C08G18/0842—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/348—Hydroxycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/758—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing two or more cycloaliphatic rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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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
- C09D175/06—Polyurethanes from polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
- C08J2475/06—Polyurethanes from polyesters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention relates to the technical field of polyurethane resin, in particular to butanone-resistant waterborne polyurethane resin for PET (polyethylene terephthalate) films, which comprises the following components: 90-150 parts of polyalcohol, 15-30 parts of chain extender, 1-2 parts of antioxidant, 80-120 parts of isocyanate, 0.5-2 parts of organic bismuth catalyst, 10-30 parts of organic solvent, 8-12 parts of neutralizer and 400-600 parts of deionized water in parts by weight. The invention also discloses a preparation method of the aqueous polyurethane resin. The aqueous polyurethane resin and the preparation method thereof are single-component aqueous polyurethane, the formed film has good shear property, excellent heat resistance and proper peel strength after being coated with PET film, is a good release agent for PET film, and can be widely applied to aluminizing and gilding processes; and has good butanone wiping resistance and provides protection function for the image-text layer.
Description
Technical Field
The invention relates to the technical field of polyurethane resin, in particular to butanone-resistant waterborne polyurethane resin for PET (polyethylene terephthalate) films and a preparation method thereof.
Background
PET film has excellent heat resistance and cold resistance, high tensile strength, low surface tension and relatively low price, is an excellent material for a transfer base film, and is widely applied to transfer technologies such as gold stamping and the like. In order to ensure the integrity of the transfer pattern and the tolerance to the external environment in the use process, a release layer and a protective layer are indispensable. As a release layer, the surface tension is low, a continuous and uniform coating can be formed on the PET film, and the PET film can be well separated during transfer; at the same time, good shear properties are required to ensure smooth transfer operations.
In order to protect the expressive property and durability of the transfer printing product, various adverse factors such as external solvents, illumination, air and the like are reduced to react with the image-text layer to cause abrasion, and the protective layer is usually arranged between the release layer and the image-text layer, so that the external factors can be effectively isolated to delay the abrasion of the image-text layer. According to the function requirement and considering the influence on the color of the product, most of functional coatings are one or two, and the protection function is realized on the premise of affecting the color of the image-text layer as little as possible.
The butanone resistance test is also called an organic solvent resistance test, is not only used for evaluating the corrosion resistance of the transfer printing product to the organic solvent, but also can evaluate the application physical property of the coating from the side surface, and judges the protection capability of the protective layer on the transfer printing product, thereby being an important evaluation standard for the performance of the PET transfer printing product.
The existing polyurethane resin has relatively poor stability, and meanwhile, has poor high temperature resistance and butanone resistance.
Disclosure of Invention
The invention provides butanone-resistant waterborne polyurethane resin for PET films and a preparation method thereof, which are stable in performance and have the properties of high temperature resistance and butanone resistance.
The invention discloses butanone-resistant waterborne polyurethane resin for PET films, which comprises the following components: 90-150 parts of polyalcohol, 15-30 parts of chain extender, 1-2 parts of antioxidant, 80-120 parts of isocyanate, 0.5-2 parts of organic bismuth catalyst, 10-30 parts of organic solvent, 8-12 parts of neutralizer and 400-600 parts of deionized water in parts by weight.
Preferably, the polyol is polycarbonate diol (PCDL) having a molecular weight of 1000-2500.
As an optimization, the chain extender comprises a hydrophilic chain extender and a polyhydroxy chain extender, wherein the hydrophilic chain extender is 2, 2-dimethylolpropionic acid (DMPA), and the polyhydroxy chain extender comprises 1, 4-Butanediol (BDO) and Trimethylolpropane (TMP); wherein the mass ratio of the hydrophilic chain extender to the polyhydroxy chain extender is 1.2:1 to 1.5:1; the mass ratio of BDO to TMP in the polyhydroxy chain extender is 8:1 to 12:1. Preferably, the isocyanate is 4,4' -dicyclohexylmethane diisocyanate (HMDI).
Preferably, the organic solvent is Acetone (AC).
Preferably, the neutralizing agent is Triethylamine (TEA).
A preparation method of butanone-resistant waterborne polyurethane resin for PET films comprises the following steps:
step 1, adding 90-150 parts by weight of polyol, 15-30 parts by weight of chain extender and 1-2 parts by weight of antioxidant into a reaction kettle, and stirring for 20min at 50-80 ℃, wherein the chain extender comprises a hydrophilic chain extender and a polyhydroxy chain extender;
step 2, adding 80-120 parts by weight of isocyanate, 0.5-2 parts by weight of organic bismuth catalyst and 10-30 parts by weight of organic solvent after uniformly stirring, and carrying out prepolymerization reaction at 75-100 ℃;
step 3, adding 8-12 parts by weight of neutralizer, continuously stirring for 15-30min, and completing the neutralization reaction at 45-55 ℃ to obtain polyurethane prepolymer;
and 4, dispersing the polyurethane prepolymer into 400-600 parts by weight of deionized water at high speed, and removing the organic solvent to form the aqueous polyurethane resin.
In the step 3, the neutralization degree of the neutralization reaction is 100%.
In the step 4, the stirring speed of high-speed dispersion is 2000-3500r/min.
The solid content of the aqueous polyurethane resin obtained in the step 4 is 30%.
The polyfunctional chain extender is introduced in the process of preparing the polyurethane prepolymer, so that the prepared waterborne polyurethane resin has a slight reticular structure, but the stability of polyurethane dispersoid is not affected. The molecular and intermolecular structures of polyurethane are further adjusted by screening and combining the basic raw materials, so that the prepared water-based polyurethane resin has excellent heat resistance and solvent resistance.
In the step 1, the polyol is polycarbonate diol (PCDL) with the molecular weight of 1000-2500. PCDL has regular structure and higher polarity, helps to improve the regularity of the synthesized polyurethane molecules and adjust the release structure, so that the synthesized polyurethane has heat resistance, hydrolysis resistance and chemical resistance.
The hydrophilic chain extender is 2, 2-dimethylolpropionic acid (DMPA), and common polyhydroxy chain extenders include 1, 4-Butanediol (BDO) and Trimethylolpropane (TMP). BDO structure is regular, and the crystallinity of polyurethane is improved.
The aqueous polyurethane resin takes water as a medium, and the acetone which is an organic solvent for adjusting the viscosity is added can be removed through vacuum reduced pressure distillation, so that the product does not contain the organic solvent, and accords with the concept of environmental protection and sustainable development.
The aqueous polyurethane resin and the preparation method thereof are single-component aqueous polyurethane, the formed film has good shear property, excellent heat resistance and proper peel strength after being coated with PET film, is a good release agent for PET film, and can be widely applied to aluminizing and gilding processes; and has good butanone wiping resistance and provides protection function for the image-text layer. Compared with the process used by the traditional PET film, the aqueous polyurethane resin disclosed by the invention combines the release layer and the color layer into a whole, so that the PET film processing procedure is greatly simplified, the production efficiency is improved, and the processing cost is reduced.
Detailed Description
In order to further describe the technical means and effects adopted for achieving the intended purpose of the present invention, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention in conjunction with the preferred embodiments.
Example 1:
the invention discloses a preparation method of butanone-resistant waterborne polyurethane resin for PET (polyethylene terephthalate) films, which comprises the steps of adding 100 parts by weight of PCDL-2000, 0.6 part by weight of TMP, 6 parts by weight of BDO, 12 parts by weight of DMPA and 1 part by weight of antioxidant into a reaction kettle at 50 ℃ and stirring for 20min; after stirring uniformly, adding 100 parts by weight of HMDI, reacting for 0.5h at 75 ℃, then preserving heat at 95 ℃ for 1.5h, adding 25 parts by weight of AC and 1 part by weight of organic bismuth catalyst, and continuing to react for 2h until the reaction is complete; cooling to 55 ℃, adding 9.1 parts by weight of TEA, and continuously stirring for 15min until the polyurethane prepolymer is completely neutralized; dispersing polyurethane prepolymer into 530 parts by weight of deionized water at 2500r/min, stirring for 40min, removing acetone, standing and curing for 3 days to obtain stable 30% solid aqueous polyurethane emulsion, and filtering to obtain butanone-resistant aqueous polyurethane resin for PET film.
The using method comprises the following steps: 2 parts by weight of wetting agent (BYK 345) is added into the PET film by using butanone-resistant waterborne polyurethane resin, the temperature is increased to 800cps/25 ℃ by using associative thickener (BYK 428), after defoaming, the PET film is coated on the PET film which is not subjected to release treatment by a 30mm bar, and the temperature is kept for 3 minutes at 130 ℃ to obtain a sample a.
Example 2:
the invention discloses a preparation method of butanone-resistant waterborne polyurethane resin for PET (polyethylene terephthalate) films, which comprises the steps of adding 90 parts by weight of PCDL-2000, 5 parts by weight of PCDL-1000, 0.6 part by weight of TMP, 7 parts by weight of BDO, 10.5 parts by weight of DMPA and 1 part by weight of antioxidant into a reaction kettle at 50 ℃ and stirring for 20min; after stirring uniformly, adding 100 parts by weight of HMDI, reacting for 0.5h at 75 ℃, then preserving heat at 95 ℃ for 1.5h, adding 20 parts by weight of AC and 1 part by weight of organic bismuth catalyst, and continuing to react for 2h until the reaction is complete; cooling to 55 ℃, adding 7.93 parts by weight of TEA, and continuously stirring for 15min until the polyurethane prepolymer is completely neutralized; dispersing the polyurethane prepolymer into 520 parts by weight of deionized water at a rotating speed of 2500r/min, stirring for 40min, removing acetone, standing and curing for 3 days to obtain stable 30% solid aqueous polyurethane emulsion, and filtering to obtain the butanone-resistant aqueous polyurethane resin for PET films.
The using method comprises the following steps: adding 2 parts by weight of wetting agent into the butanone-resistant waterborne polyurethane resin for the PET film, increasing the temperature to 800cps/25 ℃ by using an associative thickener, and after defoaming, scraping the mixture on the PET film which is not subjected to release treatment by using a 30mm wire rod, and preserving the temperature for 3min at 130 ℃ to obtain a sample b.
Example 3:
the invention discloses a preparation method of butanone-resistant waterborne polyurethane resin for PET (polyethylene terephthalate) films, which comprises the steps of adding 110 parts by weight of PCDL-2000, 0.7 part by weight of TMP, 6 parts by weight of BDO, 11 parts by weight of DMPA and 1 part by weight of antioxidant into a reaction kettle at 50 ℃ and stirring for 20min; after stirring uniformly, adding 100 parts by weight of HMDI, reacting for 0.5h at 75 ℃, then preserving heat at 95 ℃ for 1.5h, adding 30 parts by weight of AC and 1 part by weight of organic bismuth catalyst, and continuing to react for 2h until the reaction is complete; cooling to 55 ℃, adding 8.3 parts by weight of TEA, and continuously stirring for 15min until the polyurethane prepolymer is completely neutralized; dispersing polyurethane prepolymer into 535 parts by weight of deionized water at 2500r/min, stirring for 40min, removing acetone, standing and curing for 3 days to obtain stable 30% solid aqueous polyurethane emulsion, and filtering to obtain butanone-resistant aqueous polyurethane resin for PET film.
The using method comprises the following steps: adding 2 parts by weight of wetting agent into the butanone-resistant waterborne polyurethane resin for the PET film, increasing the temperature to 800cps/25 ℃ by using an associative thickener, and after defoaming, scraping the mixture on the PET film which is not subjected to release treatment by using a 30mm wire rod, and preserving the temperature for 3min at 130 ℃ to obtain a sample c.
Performance tests were performed on the above examples 1-3:
the test method is as follows: evaluating whether the peel strength of the coating is changed or not after high-temperature aluminizing treatment by an aluminizing machine, and proving the high-temperature stability of the sample; the butanone tolerance of the coating was evaluated according to the GB/T23989-2009A method.
The present invention is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (9)
1. A butanone-resistant waterborne polyurethane resin for PET films is characterized in that: the composition comprises the following components: 90-150 parts of polyalcohol, 15-30 parts of chain extender, 1-2 parts of antioxidant, 80-120 parts of isocyanate, 0.5-2 parts of organic bismuth catalyst, 10-30 parts of organic solvent, 8-12 parts of neutralizer and 400-600 parts of deionized water in parts by weight.
2. The butanone-resistant aqueous polyurethane resin for PET film according to claim 1, characterized in that: the polyalcohol is polycarbonate dihydric alcohol, and the molecular weight of the polyalcohol is 1000-2500.
3. The butanone-resistant aqueous polyurethane resin for PET film according to claim 1, characterized in that: the chain extender comprises a hydrophilic chain extender and a polyhydroxy chain extender, wherein the hydrophilic chain extender is 2, 2-dimethylolpropionic acid, and the polyhydroxy chain extender comprises 1, 4-butanediol and trimethylolpropane.
4. The butanone-resistant aqueous polyurethane resin for PET film according to claim 1, characterized in that: the isocyanate is 4,4' -dicyclohexylmethane diisocyanate.
5. The butanone-resistant aqueous polyurethane resin for PET film according to claim 1, characterized in that: the organic solvent is acetone.
6. The butanone-resistant aqueous polyurethane resin for PET film according to claim 1, characterized in that: the neutralizing agent is triethylamine.
7. A preparation method of butanone-resistant waterborne polyurethane resin for PET films is characterized by comprising the following steps: the method comprises the following steps:
step 1, adding 90-150 parts by weight of polyol, 15-30 parts by weight of chain extender and 1-2 parts by weight of antioxidant into a reaction kettle, and stirring for 20min at 50-80 ℃, wherein the chain extender comprises a hydrophilic chain extender and a polyhydroxy chain extender;
step 2, adding 80-120 parts by weight of isocyanate, 0.5-2 parts by weight of organic bismuth catalyst and 10-30 parts by weight of organic solvent after uniformly stirring, and carrying out prepolymerization reaction at 75-100 ℃;
step 3, adding 8-12 parts by weight of neutralizer, continuously stirring for 15-30min, and completing the neutralization reaction at 45-55 ℃ to obtain polyurethane prepolymer;
and 4, dispersing the polyurethane prepolymer into 400-600 parts by weight of deionized water at high speed, and removing the organic solvent to form the aqueous polyurethane resin.
8. The method for preparing butanone-resistant aqueous polyurethane resin for PET film according to claim 7, which is characterized in that: in the step 3, the neutralization degree of the neutralization reaction is 100%.
9. The method for preparing butanone-resistant aqueous polyurethane resin for PET film according to claim 7, which is characterized in that: in the step 4, the stirring speed of high-speed dispersion is 2000-3500r/min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310222011.3A CN116253855A (en) | 2023-03-09 | 2023-03-09 | Butanone-resistant waterborne polyurethane resin for PET film and preparation method thereof |
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| CN202310222011.3A CN116253855A (en) | 2023-03-09 | 2023-03-09 | Butanone-resistant waterborne polyurethane resin for PET film and preparation method thereof |
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| CN109096899A (en) * | 2018-06-29 | 2018-12-28 | 黎明化工研究设计院有限责任公司 | A kind of aqueous Stripable paint and preparation method thereof |
| CN110483728A (en) * | 2019-09-10 | 2019-11-22 | 青岛水性七彩新材料有限公司 | A kind of preparation method of strippable water-soluble polyurethane resin and the application in coating |
| CN114133503A (en) * | 2021-12-13 | 2022-03-04 | 西安交通大学 | High-temperature yellowing-resistant nonionic waterborne polyurethane and preparation method thereof |
-
2023
- 2023-03-09 CN CN202310222011.3A patent/CN116253855A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709107A (en) * | 2009-12-03 | 2010-05-19 | 上海维凯化学品有限公司 | Method for preparing polyurethane emulsion for stripping paint |
| US20130317167A1 (en) * | 2011-02-10 | 2013-11-28 | Ube Industries, Ltd. | Aqueous polyurethane resin dispersion and use thereof |
| CN104530372A (en) * | 2014-12-25 | 2015-04-22 | 张家港康得新光电材料有限公司 | Water-based polyurethane and preparation method thereof, and composite film with water-based polyurethane |
| CN108264621A (en) * | 2017-12-29 | 2018-07-10 | 上海维凯光电新材料有限公司 | A kind of heterogeneous chain extension synthetic method of aqueous polyurethane |
| CN109096899A (en) * | 2018-06-29 | 2018-12-28 | 黎明化工研究设计院有限责任公司 | A kind of aqueous Stripable paint and preparation method thereof |
| CN110483728A (en) * | 2019-09-10 | 2019-11-22 | 青岛水性七彩新材料有限公司 | A kind of preparation method of strippable water-soluble polyurethane resin and the application in coating |
| CN114133503A (en) * | 2021-12-13 | 2022-03-04 | 西安交通大学 | High-temperature yellowing-resistant nonionic waterborne polyurethane and preparation method thereof |
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