CN110669196A - Waterborne polyurethane and method for preparing transfer agent by using same and application of waterborne polyurethane - Google Patents
Waterborne polyurethane and method for preparing transfer agent by using same and application of waterborne polyurethane Download PDFInfo
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- CN110669196A CN110669196A CN201910747266.5A CN201910747266A CN110669196A CN 110669196 A CN110669196 A CN 110669196A CN 201910747266 A CN201910747266 A CN 201910747266A CN 110669196 A CN110669196 A CN 110669196A
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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
-
- 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
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
-
- 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
-
- 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
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
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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
- C08G18/4266—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
- C08G18/4269—Lactones
- C08G18/4277—Caprolactone and/or substituted caprolactone
-
- 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
- C08G18/61—Polysiloxanes
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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
Abstract
The invention discloses waterborne polyurethane which comprises, by mass, 35-60 parts of macromolecular polyol, 15-25 parts of isocyanate and the like. The invention overcomes the defects of poor temperature resistance effect, poor stripping performance and the like of the existing waterborne polyurethane emulsion.
Description
Technical Field
The invention belongs to the field of material industry, and particularly relates to waterborne polyurethane, and a method for preparing a transfer agent and application thereof.
Background
The transfer aluminum-plating coating is an important component of an aluminum-plating film and aluminum-plating paper, but the traditional solvent-based transfer coating has high content of volatile organic compounds, large odor and serious environmental pollution, and the residual solvent causes the aluminum-plating paper to generate bad odor, so that the requirement of the tobacco packaging industry can not be completely met.
The aqueous polyurethane emulsion is an environment-friendly coating, and the aqueous polyurethane emulsion takes water as a dispersion medium instead of an organic solvent, so that the synthesis process is stable. The coating film has the advantages of non-inflammability, no toxicity, no pollution and the like, but the water-based polyurethane emulsion supplied in the current market has poor heat-resistant effect and poor stripping performance and cannot meet the market requirement.
Disclosure of Invention
The invention aims to provide waterborne polyurethane, a method for preparing a transfer agent by using the waterborne polyurethane and application of the transfer agent, and overcomes the defects of poor temperature resistance effect, poor stripping performance and the like of waterborne polyurethane emulsion supplied in the current market.
In order to solve the problems, the invention is realized by the following technical scheme: the waterborne polyurethane is characterized by comprising the following components in parts by weight,
30-60 parts of macromolecular polyol, 2-6 parts of organosilicon polyol, 15-25 parts of isocyanate, 4-6 parts of carboxylic acid type hydrophilic chain extender, 3-5 parts of neutralizing agent and 2-10 parts of micromolecular amine post-chain extender.
As a further improvement of the scheme, the organic silicon polyhydric alcohol is organic silicon dihydric alcohol with the molecular weight of 1800-3000.
As a further improvement of the scheme, the mass fraction of the isocyanate groups in the waterborne polyurethane is 20-30%.
As a further improvement of the scheme, the minimum film-forming temperature of the waterborne polyurethane is-1-2 ℃.
As a further improvement of the scheme, the macromolecular polyalcohol is any one or more of polycaprolactone diol, polytetrahydrofuran diol, polycarbonate diol and polybutylene adipate diol.
As a further improvement of the above aspect, the isocyanate is any one or more of hexamethylene diisocyanate, isophorone diisocyanate, and dicyclohexylmethane diisocyanate.
As a further improvement of the above scheme, the carboxylic acid type hydrophilic chain extender is dimethylolpropionic acid.
As a further improvement of the above aspect, the small molecule amine post-chain extender comprises any one or more of ethylenediamine, isophorone diamine, and diaminodicyclohexylmethane.
As a further improvement of the above, the neutralizing agent comprises any one or more of triethylamine, diethanolamine, and triethanolamine.
A method for preparing a transfer agent by using the waterborne polyurethane is characterized in that a wetting agent and a flatting agent are added into the waterborne polyurethane to obtain the transfer agent.
The invention also relates to application of the transfer agent in cigarette packet aluminum-sprayed paper.
Drawings
FIG. 1: the method of an embodiment of the invention is schematically illustrated in the flow chart.
Detailed Description
The present invention is further illustrated by the following specific examples, but it should be noted that the specific material ratios, process conditions, results, etc. described in the examples of the present invention are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
The method for preparing the waterborne polyurethane and the specific method for preparing the transfer agent by utilizing the waterborne polyurethane are shown in figure 1,
s1, mixing and stirring the macromolecular polyol, the organic silicon polyol, the isocyanate and the carboxylic acid type hydrophilic chain extender to obtain a waterborne polyurethane prepolymer;
s2, adding a neutralizing agent, deionized water and a micromolecular amine into the waterborne polyurethane prepolymer, and then mixing and stirring the mixture to obtain the waterborne polyurethane;
s3, adding a wetting agent and a leveling agent into the waterborne polyurethane to obtain the transfer agent.
Specifically, in S1, stirring 30-60 parts by mass of the macromolecular polyol, 2-6 parts by mass of the organosilicon polyol and 15-25 parts by mass of the isocyanate at 90-100 ℃ for 1-3 hours, cooling to 70-85 ℃, then adding 4-6 parts by mass of the carboxylic acid type hydrophilic chain extender, stirring at 700-85 ℃ for 1-2 hours, and continuously adding the same amount of the carboxylic acid type hydrophilic chain extender, and stirring at 70-85 ℃ for 1-2 hours to obtain the waterborne polyurethane prepolymer.
In different embodiments, the macromolecular polyol is any one or more of polycaprolactone diol, polytetrahydrofuran diol, polycarbonate diol and polybutylene adipate diol, the using amount of the macromolecular polyol further comprises 58-60 parts by mass, 45-48 parts by mass, 50-55 parts by mass or 30-35 parts by mass, the relative molecular mass of the macromolecular polyol is 2000-3000 including 2000, and the initial viscosity of the waterborne polyurethane meets the requirement of cigarette packet aluminum-sprayed paper. The step of stirring the isocyanate at 90-100 ℃ for 1-3 hours further comprises stirring the isocyanate at 90-95 ℃ for 1-2 hours. The step of cooling to 80-85 ℃ further comprises cooling to 75-80 ℃.
In different embodiments, the silicone polyol is a silicone diol with a molecular weight of 1800-3000, including 1800, and the silicone polyol with the molecular weight not only enables the peel strength of the aqueous polyurethane resin to achieve the effect of easy peeling, but also is beneficial to improving the heat resistance of the aqueous polyurethane resin. The usage amount of the organic silicon polyol also comprises 5-5.5 parts by mass, 5.6-6 parts by mass or 4.6-4.8 parts by mass. In different embodiments, the isocyanate is any one or more of hexamethylene diisocyanate, isophorone diisocyanate and dicyclohexylmethane diisocyanate, the amount of the isocyanate further comprises 20-25 parts by mass, and the purpose of adding 20-25 parts by mass of the diisocyanate is to keep the isocyanate group in the system at 20-30% by mass, so that the reaction is more sufficient, the amount of the silicone polyol and the macromolecular polyol can be conveniently controlled by keeping consistent amount, the control of the amount can influence the stripping property and the high temperature resistance of the waterborne polyurethane, and the use of 20-25 parts by mass of the diisocyanate can enable the prepared waterborne polyurethane transfer agent to achieve the property of easy stripping, namely complete stripping.
In different embodiments, the carboxylic acid type hydrophilic chain extender is dimethylolpropionic acid, and the amount of the carboxylic acid type hydrophilic chain extender is 5.5 to 6.0 parts by mass or 5.5 to 5.7 parts by mass.
The invention has the advantages of less raw material consumption, cost saving and excellent performance of the obtained waterborne polyurethane, and the transfer agent prepared by the waterborne polyurethane can meet the requirements of the tobacco packaging industry.
Specifically, in S2, the waterborne polyurethane prepolymer is cooled to 1-20 ℃, 3-5 parts by mass of the neutralizing agent is added and transferred to a high-speed dispersion machine, stirring is carried out at a rotation speed of 1000-2000r/min, deionized water is added, then 2-10 parts by mass of the micromolecular amine rear chain extender is added, stirring is carried out at a rotation speed of 300-500r/min for 1-10 minutes, and the waterborne polyurethane is obtained, wherein the mass fraction of isocyanate groups in the waterborne polyurethane is 20-30%, and the lowest film forming temperature of the waterborne polyurethane is-1-2 ℃.
In different embodiments, the step of cooling the aqueous polyurethane prepolymer to 1-20 ℃ further comprises cooling the aqueous polyurethane prepolymer to 15-20 ℃. The neutralizer comprises one or more of triethylamine, diethanolamine and triethanolamine, and the using amount of the neutralizer comprises 4.0-4.5 parts by mass or 3-4.3 parts by mass. The step of stirring and adding deionized water at the rotation speed of 1000-2000r/min comprises adding 180-184 mass parts of deionized water at the rotation speed of 1000-1400r/min, adding 180-185 mass parts of deionized water at the rotation speed of 1400-1600r/min or adding 180-185 mass parts of deionized water at the rotation speed of 1700-2000 r/min. The step of adding 2-10 parts by mass of the micromolecule amine post-chain extender and stirring at the rotating speed of 500r/min for 1-10 minutes comprises the steps of slowly adding 4.1-4.25 parts by mass of isophorone diamine post-chain extension reagent after phase transition and stirring for 1-10 minutes or slowly adding 6-8 parts by mass of isophorone diamine post-chain extension reagent after phase transition and stirring for 1-10 minutes.
Specifically, in S3, 1.25 to 1.8 parts by mass of a wetting agent and 1.25 to 1.8 parts by mass of a leveling agent are added to the aqueous polyurethane to obtain the transfer agent, i.e., the aqueous polyurethane transfer agent. The waterborne polyurethane transfer agent has the characteristics of high temperature resistance and easy stripping, and can be applied to cigarette packet aluminum-sprayed paper.
In different embodiments, the step of adding 1.25 to 1.8 parts by mass of the wetting agent and 1.25 to 1.8 parts by mass of the leveling agent to the aqueous polyurethane (emulsion) includes adding 1.45 to 1.51 parts by mass of the wetting agent and 1.45 to 1.51 parts by mass of the leveling agent to the aqueous polyurethane (emulsion), adding 1.32 to 1.37 parts by mass of the wetting agent and 1.32 to 1.37 parts by mass of the leveling agent to the aqueous polyurethane (emulsion), adding 1.25 to 1.28 parts by mass of the wetting agent and 1.25 to 1.28 parts by mass of the leveling agent to the aqueous polyurethane (emulsion), or adding 1.4 to 1.8 parts by mass of the wetting agent and 1.4 to 1.8 parts by mass of the leveling agent to the aqueous polyurethane (emulsion).
In one embodiment, 58-60 parts by mass of polycaprolactone diol (2000 relative molecular mass) and 5-5.5 parts by mass of organosilicon diol (1800 relative molecular mass) are weighed and placed in a reactor, 20-25 parts by mass of isophorone diisocyanate is added under stirring, the temperature is kept at 90-95 ℃, stirring is carried out for 1-2 hours, the temperature is reduced to 75-80 ℃, 5.5-6.0 parts by mass of dimethylolpropionic acid is added, stirring is carried out for 1-2 hours under the temperature kept at 75-80 ℃, 5.5-6.0 parts by mass of dimethylolpropionic acid is continuously added, and stirring is carried out for 1-2 hours under the temperature of 75-80 ℃, so as to obtain the waterborne polyurethane prepolymer. Cooling the waterborne polyurethane prepolymer to 15-20 ℃, adding 4.0-4.5 parts by mass of triethylamine, stirring for 1-2 minutes, transferring to a high-speed emulsifying machine, adding 180-184 parts by mass of deionized water at the rotating speed of 1000-1400r/min, slowly adding 4.1-4.25 parts by mass of isophorone diamine after phase transition, then stirring for 1-10 minutes, and obtaining the waterborne polyurethane. 1.45-1.51 parts by mass of wetting agent and 1.45-1.51 parts by mass of leveling agent are added to the aqueous polyurethane (emulsion) to obtain an aqueous polyurethane transfer agent, which is marked as sample 1.
In one embodiment, 50-55 parts by mass of polycaprolactone diol (2000 relative molecular mass) and 5.6-6 parts by mass of organosilicon polyol (1800 relative molecular mass) are weighed and placed in a reactor, 20-25 parts by mass of isophorone diisocyanate is added under stirring, the temperature is kept at 90-95 ℃, the stirring is carried out for 1-2 hours, the temperature is reduced to 75-80 ℃, 5.5-5.7 parts by mass of dimethylolpropionic acid is added, the stirring is carried out for 1-2 hours under the temperature kept at 75-80 ℃, the carboxylic acid type hydrophilic chain extender is continuously added, and the stirring is carried out for 1-2 hours under the temperature of 80-100 ℃, so as to obtain the waterborne polyurethane prepolymer. Cooling the waterborne polyurethane prepolymer to 15-20 ℃, adding 4.0-4.5 parts by mass of triethylamine, stirring for 1-2 minutes, transferring to a high-speed emulsifying machine, adding 180-184 parts by mass of deionized water at the rotating speed of 1000-1400r/min, slowly adding 4.1-4.25 parts by mass of isophorone diamine after phase transition, then stirring for 1-10 minutes, and obtaining the waterborne polyurethane. 1.32-1.37 parts by mass of wetting agent and 1.32-1.37 parts by mass of leveling agent are added to the aqueous polyurethane (emulsion) to obtain an aqueous polyurethane transfer agent, which is marked as sample 2.
In one embodiment, 45-48 parts by mass of polycaprolactone diol (2000 relative molecular mass) and 4.6-4.8 parts by mass of organic silicon polyol (1800 relative molecular mass) are weighed and placed in a reactor, 20-25 parts by mass of isophorone diisocyanate are added under stirring, the temperature is kept at 90-95 ℃, stirring is carried out for 1-2 hours, the temperature is reduced to 75-80 ℃, 5.5-5.7 parts by mass of dimethylolpropionic acid is added, the temperature is kept at 75-80 ℃, stirring is carried out for 1-2 hours, the carboxylic acid type hydrophilic chain extender is continuously added, and stirring is carried out for 1-2 hours at 80-100 ℃ to obtain the aqueous polyurethane prepolymer. Cooling the waterborne polyurethane prepolymer to 15-20 ℃, adding 3-4.3 parts by mass of triethylamine, stirring for 1-2 minutes, transferring to a high-speed emulsifying machine, adding 180-185 parts by mass of deionized water at the rotating speed of 1400-1600r/min, slowly adding 6-8 parts by mass of isophorone diamine after phase transition, and stirring for 1-10 minutes to obtain the waterborne polyurethane. 1.25 to 1.28 parts by mass of a wetting agent and 1.25 to 1.28 parts by mass of a leveling agent are added to the aqueous polyurethane (emulsion) to obtain an aqueous polyurethane transfer agent, which is denoted as sample 3.
In one embodiment, 30-35 parts by mass of polycaprolactone diol (2000 relative molecular mass) and 5.6-6 parts by mass of silicone polyol (1800 relative molecular mass) are weighed into a reactor, 20-25 parts by mass of isophorone diisocyanate is added under stirring, the temperature is kept at 90-95 ℃, and the mixture is stirred for 1-2 hours. Cooling to 75-80 ℃, adding 5.5-5.7 parts by mass of dimethylolpropionic acid, keeping the temperature at 75-80 ℃, stirring for 1-2 hours, continuously adding the carboxylic acid type hydrophilic chain extender, and stirring for 1-2 hours at 80-100 ℃ to obtain the waterborne polyurethane prepolymer. And (2) cooling the aqueous polyurethane prepolymer to 15-20 ℃, adding 3-4.3 parts by mass of triethylamine, stirring for 1-2 minutes, transferring to a high-speed emulsifying machine, adding 180-185 parts by mass of deionized water at the rotating speed of 1700-2000r/min, slowly adding 6-8 parts by mass of isophorone diamine after phase transition, then, adding a chain extension reagent, and stirring for 1-10 minutes to obtain the aqueous polyurethane. 1.4-1.8 parts by mass of a wetting agent and 1.4-1.8 parts by mass of a leveling agent are added to the aqueous polyurethane (emulsion) to obtain an aqueous polyurethane transfer agent, which is marked as sample 4.
In a comparative example, 58-60 parts by mass of polycaprolactone diol (relative molecular mass is 2000) is weighed and placed into a reactor, 20-25 parts by mass of isophorone diisocyanate is added under stirring, the temperature is kept at 90-95 ℃, stirring is carried out for 1-2 hours, the temperature is reduced to 75-80 ℃, 5.5-6.0 parts by mass of dimethylolpropionic acid is added, stirring is carried out for 1-2 hours under the temperature of 75-80 ℃, the carboxylic acid type hydrophilic chain extender is continuously added, and stirring is carried out for 1-2 hours under the temperature of 80-100 ℃ to obtain the waterborne polyurethane prepolymer. Cooling the waterborne polyurethane prepolymer to 15-20 ℃, adding 4.0-4.5 parts by mass of triethylamine, stirring for 1-2 minutes, transferring into a high-speed emulsifying machine, adding 180-184 parts by mass of deionized water at the rotating speed of 1000-1400r/min, slowly adding 4.1-4.25 parts by mass of isophorone diamine after phase transition, and then chain extending the reagent to obtain the waterborne polyurethane. 1.45-1.51 parts by mass of a wetting agent and 1.45-1.51 parts by mass of a leveling agent are added to the aqueous polyurethane (emulsion) to obtain an aqueous polyurethane transfer agent, which is designated as sample 1. The waterborne polyurethane transfer agent can be applied to cigarette packet aluminum-sprayed paper. This comparative example 1 had a disadvantage that peeling was difficult because no silicone polyol was added.
The waterborne polyurethane transfer agent obtained in the embodiment is applied to cigarette packet aluminum-sprayed paper and is subjected to performance test.
Film Heat resistance test
The paint is coated on four tinplate pieces (or sample plates specified by product standards) according to the national standard B1727-79 general preparation method of coating. After the actual film had dried, the three film samples in the different examples were placed in a thermostat set to the standard specified temperature, and the other was left for comparison. And when a certain time is reached, taking out three coating sample plates, cooling to room temperature, comparing with a reserved coating sample, checking whether the phenomena of layering, wrinkling, foaming, cracking, discoloring and the like exist, and judging that at least two sample plates in the three sample plates meet qualified product standards as being qualified.
Test for peeling Property
According to the simple method for industrially testing the stripping property, the permanent large transparent pressure-sensitive adhesive tape is used for stripping after being pressed and adhered on the film.
The test results of the above 4 examples and comparative examples are shown in table 1.
TABLE 1 Performance test Table
As can be seen from table 1: compared with the sample 2 and the sample 4, the proportion between the organosilicon polyol and the isophorone diisocyanate (or other isocyanates) is the same, so that the stripping performance of the sample 2 and the sample 4 is the same, the effect of completely stripping can be achieved, but the amount of the macromolecular polyol is different, and the temperature resistance is different. In the comparative example, no organosilicon polyol is added, so that both the stripping performance and the temperature resistance are poor.
According to the invention, firstly, an isocyanate monomer, an organic silicon polyol and a macromolecular polyol are reacted to obtain a reactant with low viscosity, then a carboxylic acid type hydrophilic chain extender is added to be uniformly stirred, and after full reaction, emulsification and dispersion are carried out, so that the aqueous polyurethane prepolymer with good storage stability is prepared. Adding a neutralizer, deionized water and a micromolecular amine post-chain extender into the waterborne polyurethane prepolymer, and mixing and stirring to obtain the waterborne polyurethane; and adding a wetting agent and a flatting agent into the waterborne polyurethane to obtain the transfer agent. In different embodiments, the carboxylic acid type hydrophilic chain extender is added twice, so that not only is the good function of the chain extender achieved, but also the polyurethane can obtain good self-emulsifying performance, and the stability and the heat resistance of the polyurethane emulsion can be greatly improved.
Aiming at the defects in the prior art, the invention provides the waterborne polyurethane modified by organic silicon, the waterborne polyurethane transfer agent is prepared by the waterborne polyurethane, and the waterborne polyurethane transfer agent is applied to the field of aluminum-sprayed paper of cigarette packets, so that the requirements of the tobacco packaging industry are met.
The waterborne polyurethane transfer agent modified by the organic silicon polyol has the advantages of good storage stability, high temperature resistance, easy stripping, excellent mechanical property and higher gloss, and the solid content is 35-55%. The waterborne polyurethane transfer agent is prepared from the organosilicon waterborne polyurethane and is applied to the field of cigarette packet aluminum-sprayed paper.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features in different embodiments may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The waterborne polyurethane is characterized by comprising the following components in parts by mass,
35-60 parts of macromolecular polyol, 2-6 parts of organosilicon polyol, 15-25 parts of isocyanate, 4-6 parts of carboxylic acid type hydrophilic chain extender, 3-5 parts of neutralizing agent and 2-10 parts of micromolecular amine post-chain extender.
2. The aqueous polyurethane of claim 1, wherein: the organic silicon polyol is organic silicon dihydric alcohol with the molecular weight of 1800-3000.
3. The aqueous polyurethane of claim 2, wherein: the mass fraction of the isocyanate group in the waterborne polyurethane is 20-30%.
4. The aqueous polyurethane of claim 1, wherein: the minimum film forming temperature of the waterborne polyurethane is-1-2 ℃.
5. The aqueous polyurethane of claim 1, wherein: the macromolecular polyol is any one or more of polycaprolactone diol, polytetrahydrofuran diol, polycarbonate diol and polybutylene adipate diol.
6. The aqueous polyurethane of claim 1, wherein: the isocyanate is any one or more of hexamethylene diisocyanate, isophorone diisocyanate and dicyclohexylmethane diisocyanate.
7. The aqueous polyurethane of claim 1, wherein: the carboxylic acid type hydrophilic chain extender is dimethylolpropionic acid.
8. The aqueous polyurethane of claim 1, wherein: the micromolecular amine post-chain extender comprises any one or more of ethylenediamine, isophorone diamine and diaminodicyclohexyl methane.
9. A process for preparing a transfer agent using the aqueous polyurethane according to any of claims 1 to 8, characterized in that: and adding a wetting agent and a flatting agent into the waterborne polyurethane to obtain the transfer agent.
10. Use of the transfer agent according to claim 9 in cigarette packets of aluminum-sprayed paper.
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| CN201910747266.5A CN110669196A (en) | 2019-08-14 | 2019-08-14 | Waterborne polyurethane and method for preparing transfer agent by using same and application of waterborne polyurethane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726269A (en) * | 2020-12-25 | 2021-04-30 | 广州慧谷化学有限公司 | Water-based self-crosslinking transfer coating for transfer paper and preparation method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760121A (en) * | 2009-12-14 | 2010-06-30 | 上海维凯化学品有限公司 | Temperature-resistance environmental-protection aqueous transfer coating and preparation method thereof |
| CN102839571A (en) * | 2012-08-28 | 2012-12-26 | 上海紫江喷铝包装材料有限公司 | Production method of high-brightness vacuum aluminized paper and paperboard |
| CN103866607A (en) * | 2014-03-25 | 2014-06-18 | 广州慧谷化学有限公司 | High-strength directly aluminizing water-based base coat and preparation method and application of high-strength directly aluminizing water-based base coat |
| CN104497743A (en) * | 2014-12-14 | 2015-04-08 | 安徽顺彤包装材料有限公司 | Environment-friendly waterborne transfer coating |
| CN106118428A (en) * | 2016-07-28 | 2016-11-16 | 上海乘鹰新材料有限公司 | A kind of waterproof scratch resistant aqueous polyurethane coating and preparation method thereof |
| CN106146785A (en) * | 2016-07-29 | 2016-11-23 | 华南理工大学 | Leather finishing agent organic-silicon-modified carboxylic acid/sulfonic acid type water-based polyurethane and method thereof |
| CN107057032A (en) * | 2017-04-26 | 2017-08-18 | 合肥科天水性科技有限责任公司 | A kind of high-performance water-based polyurethane resin and preparation method for spinning coating |
| CN107141434A (en) * | 2017-06-08 | 2017-09-08 | 合肥科天水性科技有限责任公司 | It is a kind of for waterborne polyurethane resin of synthetic leather fabric and preparation method thereof |
| CN109265647A (en) * | 2018-09-27 | 2019-01-25 | 长春工业大学 | A kind of water-repellent paint aqueous polyurethane emulsion and preparation method thereof |
| CN109825239A (en) * | 2019-01-14 | 2019-05-31 | 汕头市鑫源化工科技有限公司 | A kind of online peel-strength polyurethane transfer adhesive of high speed compound and preparation method thereof |
| CN110041499A (en) * | 2019-04-26 | 2019-07-23 | 湘潭大学 | A kind of block copolymerization organic silicon modified aqueous polyurethane lotion and preparation method thereof |
-
2019
- 2019-08-14 CN CN201910747266.5A patent/CN110669196A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760121A (en) * | 2009-12-14 | 2010-06-30 | 上海维凯化学品有限公司 | Temperature-resistance environmental-protection aqueous transfer coating and preparation method thereof |
| CN102839571A (en) * | 2012-08-28 | 2012-12-26 | 上海紫江喷铝包装材料有限公司 | Production method of high-brightness vacuum aluminized paper and paperboard |
| CN103866607A (en) * | 2014-03-25 | 2014-06-18 | 广州慧谷化学有限公司 | High-strength directly aluminizing water-based base coat and preparation method and application of high-strength directly aluminizing water-based base coat |
| CN104497743A (en) * | 2014-12-14 | 2015-04-08 | 安徽顺彤包装材料有限公司 | Environment-friendly waterborne transfer coating |
| CN106118428A (en) * | 2016-07-28 | 2016-11-16 | 上海乘鹰新材料有限公司 | A kind of waterproof scratch resistant aqueous polyurethane coating and preparation method thereof |
| CN106146785A (en) * | 2016-07-29 | 2016-11-23 | 华南理工大学 | Leather finishing agent organic-silicon-modified carboxylic acid/sulfonic acid type water-based polyurethane and method thereof |
| CN107057032A (en) * | 2017-04-26 | 2017-08-18 | 合肥科天水性科技有限责任公司 | A kind of high-performance water-based polyurethane resin and preparation method for spinning coating |
| CN107141434A (en) * | 2017-06-08 | 2017-09-08 | 合肥科天水性科技有限责任公司 | It is a kind of for waterborne polyurethane resin of synthetic leather fabric and preparation method thereof |
| CN109265647A (en) * | 2018-09-27 | 2019-01-25 | 长春工业大学 | A kind of water-repellent paint aqueous polyurethane emulsion and preparation method thereof |
| CN109825239A (en) * | 2019-01-14 | 2019-05-31 | 汕头市鑫源化工科技有限公司 | A kind of online peel-strength polyurethane transfer adhesive of high speed compound and preparation method thereof |
| CN110041499A (en) * | 2019-04-26 | 2019-07-23 | 湘潭大学 | A kind of block copolymerization organic silicon modified aqueous polyurethane lotion and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王猛猛: "水性聚氨酯胶膜的耐热性能研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726269A (en) * | 2020-12-25 | 2021-04-30 | 广州慧谷化学有限公司 | Water-based self-crosslinking transfer coating for transfer paper and preparation method thereof |
| CN112726269B (en) * | 2020-12-25 | 2022-07-19 | 广州慧谷化学有限公司 | Water-based self-crosslinking transfer coating for transfer paper and preparation method thereof |
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