CN114716878A - Solvent-free UV gloss oil and preparation and use methods thereof - Google Patents
Solvent-free UV gloss oil and preparation and use methods thereof Download PDFInfo
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- CN114716878A CN114716878A CN202210156540.3A CN202210156540A CN114716878A CN 114716878 A CN114716878 A CN 114716878A CN 202210156540 A CN202210156540 A CN 202210156540A CN 114716878 A CN114716878 A CN 114716878A
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- 238000000576 coating method Methods 0.000 claims abstract description 26
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- 239000000203 mixture Substances 0.000 claims description 13
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- MYWOJODOMFBVCB-UHFFFAOYSA-N 1,2,6-trimethylphenanthrene Chemical compound CC1=CC=C2C3=CC(C)=CC=C3C=CC2=C1C MYWOJODOMFBVCB-UHFFFAOYSA-N 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 4
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- 238000002156 mixing Methods 0.000 claims description 3
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 claims description 2
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
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- ZDQNWDNMNKSMHI-UHFFFAOYSA-N 1-[2-(2-prop-2-enoyloxypropoxy)propoxy]propan-2-yl prop-2-enoate Chemical group C=CC(=O)OC(C)COC(C)COCC(C)OC(=O)C=C ZDQNWDNMNKSMHI-UHFFFAOYSA-N 0.000 description 2
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- ZZAGLMPBQOKGGT-UHFFFAOYSA-N [4-[4-(4-prop-2-enoyloxybutoxy)benzoyl]oxyphenyl] 4-(4-prop-2-enoyloxybutoxy)benzoate Chemical compound C1=CC(OCCCCOC(=O)C=C)=CC=C1C(=O)OC(C=C1)=CC=C1OC(=O)C1=CC=C(OCCCCOC(=O)C=C)C=C1 ZZAGLMPBQOKGGT-UHFFFAOYSA-N 0.000 description 2
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- GJKGAPPUXSSCFI-UHFFFAOYSA-N 2-Hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone Chemical compound CC(C)(O)C(=O)C1=CC=C(OCCO)C=C1 GJKGAPPUXSSCFI-UHFFFAOYSA-N 0.000 description 1
- GTELLNMUWNJXMQ-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical class OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.CCC(CO)(CO)CO GTELLNMUWNJXMQ-UHFFFAOYSA-N 0.000 description 1
- RIWRBSMFKVOJMN-UHFFFAOYSA-N 2-methyl-1-phenylpropan-2-ol Chemical compound CC(C)(O)CC1=CC=CC=C1 RIWRBSMFKVOJMN-UHFFFAOYSA-N 0.000 description 1
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
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- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- 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
-
- 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
-
- 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- 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
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
-
- 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
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
Abstract
The invention discloses a solvent-free UV gloss oil and a preparation method and a use method thereof, wherein the solvent-free UV gloss oil comprises 5-25 parts of a first prepolymer; 0-3 parts of a second prepolymer; 50-80 parts of a first reactive diluent; 0-20 parts of a second reactive diluent; 0-10 parts of a filler; 0.01-0.1 part of flatting agent; 2-10 parts of a photoinitiator. The coating formed by the solvent-free UV gloss oil has the advantages of soft touch, fingerprint resistance, antibiosis and the like.
Description
Technical Field
The invention relates to the technical field of soft touch films, in particular to solvent-free UV gloss oil for a soft touch film and a preparation method and a use method of the solvent-free UV gloss oil.
Background
With the increasing quality of life, consumers have increasingly demanded high touch feeling of some products (such as product packages, etc.), such as soft touch feeling, which means a feeling of softness to the touch and a feeling of biased touch to rubber. Currently, in order to achieve a soft touch on an article, aqueous coating systems are generally used, such as in the field of packaging, to achieve a soft touch on the article. However, waterborne coating systems have solvents and are limited by solvent drying efficiency, which makes the production of articles slower. Meanwhile, due to the hydrophilic characteristic of the aqueous system, the film is easily infected with hand sweat after being formed, so that hand marks remain on the surface of the product, and the appearance is influenced.
In addition, some matte soft touch films require matting agents to reduce gloss in some use scenarios, however, this can affect hand feel on the one hand and system viscosity on the other hand, resulting in poor workability.
Disclosure of Invention
The invention aims to provide a solvent-free UV gloss oil which can improve the production speed and has the characteristics of soft touch, fingerprint resistance and the like after film forming. Also, a method of making and using the solvent-free UV varnish is provided.
In order to achieve the above object, the present invention provides a solvent-free UV varnish for a soft touch film, comprising, in parts by mass:
5-25 parts of a first prepolymer;
0-3 parts of a second prepolymer;
50-80 parts of a first reactive diluent;
0-20 parts of a second reactive diluent;
0-10 parts of a filler;
0.01-0.1 part of flatting agent;
2-10 parts of a photoinitiator.
Preferably, the first reactive diluent is a monomer with TG < 0 ℃ and molecular weight > 220.
Preferably, the first reactive diluent is selected from one or more of monofunctional reactive monomers, difunctional reactive monomers and multifunctional reactive monomers with an ether structure.
Preferably, the second reactive diluent is a reactive monomer having at least three functionalities.
Preferably, the second reactive diluent has an aromatic ring or a hydroxyl group.
Preferably, the second reactive diluent is one or more selected from trimethylolpropane triacrylate, trimethylolpropane trimethacrylate and pentaerythritol tetraacrylate.
Preferably, the first prepolymer is a prepolymer with the functionality of 2-3, the molecular weight of more than or equal to 3500g/Mol and the elongation at break of more than 100%.
Preferably, the first prepolymer is selected from one or more of hyperbranched acrylic acid modified polyester resin, three-arm star-shaped polyurethane modified acrylic resin and four-arm star-shaped polyurethane modified acrylic resin.
Preferably, the second prepolymer is an isocyanate-modified acrylic resin.
Preferably, the second prepolymer is a diisocyanate-modified acrylic resin.
Preferably, the solvent-free UV gloss oil further comprises 1-5 parts of an antibacterial agent.
The invention also discloses a method for preparing the solvent-free UV gloss oil, which comprises the following steps:
s100, uniformly mixing 5-25 parts of first prepolymer, 50-80 parts of first reactive diluent, 0-20 parts of second reactive diluent and 0.01-0.1 part of flatting agent, and dispersing at a high speed for 5 minutes under the condition of 500 r/min;
s200, adding 0-10 parts of filler and 2-10 parts of photoinitiator into the mixture treated in the step S100, and dispersing at high speed for 45-80 minutes under the condition of 800-1000 r/min;
and S300, adding 0-3 parts of second prepolymer into the mixture treated in the step S200, and dispersing at a high speed for 5 minutes under the condition of 500 r/min.
The invention also discloses a method for using the solvent-free UV gloss oil, which comprises the following steps:
s100', performing corona treatment on the surface of the film;
s200', coating solvent-free UV gloss oil on the surface of the film subjected to corona treatment;
and S300', carrying out secondary curing on the film processed in the step S200 through a UV curing system.
The invention has the beneficial effects that:
(1) the solvent-free UV gloss oil has high curing speed due to the content proportion of various components in the solvent-free UV gloss oil, can be cured into a film within 0.5-2 s, improves the adhesive force of the solvent-free UV gloss oil to a coating, has a wider application range, and can be suitable for various plastic base materials such as BOPP, PET, NY, PVC and the like.
(2) The solvent-free UV gloss oil contains no solvent, a finished product has no odor residue and good environment friendliness, and the solvent-free UV gloss oil can endow the film with matte, soft touch, scratch resistance, antibacterial and other performances after being coated on the film and cured to form the film.
(3) The solvent-free UV gloss oil disclosed by the invention is free of solvent, so that the solvent drying efficiency is not limited, the production efficiency can be effectively improved, and the production can reach 200m per minute.
Drawings
FIG. 1 is a flow chart of a method for preparing a solventless UV gloss oil according to one embodiment of the present invention;
FIG. 2 is a flow chart of a method of using the solventless UV gloss oil in one embodiment of the present invention.
Detailed Description
The technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
The solvent-free UV gloss oil for the soft touch film comprises, by weight, 5-25 parts of a first prepolymer, 0-3 parts of a second prepolymer, 50-80 parts of a first reactive diluent, 0-20 parts of a second reactive diluent, 0-10 parts of a filler, 1-5 parts of an antibacterial agent, 0.01-0.1 part of a leveling agent and 2-10 parts of a photoinitiator.
In the solvent-free UV gloss oil, the weight part of the first prepolymer is set within the range, so that the glossiness after film forming can be effectively improved, and the solvent-free UV gloss oil has the advantages of low glossiness and high haze. The weight part of the second prepolymer is set in the range, so that the adhesive force of the coating can be improved, and the coating is suitable for various plastic base materials such as BOPP, PET, NY, PVC and the like, and has a wide application range. Setting the parts by weight of the first reactive diluent within the above ranges makes it possible, on the one hand, to adjust the viscosity of the system and, on the other hand, to impart a soft touch to the coating after film formation and to accelerate the curing rate. Setting the weight part of the second reactive diluent within the above range can improve the coating adhesion.
The solvent-free UV gloss oil has the advantages that the content ratio of various components in the solvent-free UV gloss oil can enable the curing speed of the solvent-free UV gloss oil to be high, the solvent-free UV gloss oil can be cured into a film within 0.5-2 s, the adhesive force of the solvent-free UV gloss oil to a coating is improved, the application range is wider, and the solvent-free UV gloss oil can be suitable for various plastic base materials such as BOPP, PET, NY and PVC. Meanwhile, the content proportions of various components in the solvent-free UV gloss oil can ensure that the solvent-free UV gloss oil does not contain a solvent, a finished product has no odor residue and good environment friendliness, and can endow the film with matte, soft touch, scratch resistance, antibacterial and other performances after the film is coated and cured to form a film.
The first prepolymer is a prepolymer with the functionality of 2-3, the molecular weight of more than or equal to 3500g/Mol and the elongation at break of more than 100%. The first prepolymer with the functionality of 2-3 can avoid the problem because the film forming brittleness is high easily and the soft feeling is affected when the functionality is high and the curing speed is low when the functionality is high. The first prepolymer can be hyperbranched acrylic acid modified polyester resin, or three-arm/four-arm star type polyurethane modified acrylic resin, or a combination thereof, that is, the first prepolymer can be selected from one or more of hyperbranched acrylic acid modified polyester resin, three-arm star type polyurethane modified acrylic resin and four-arm star type polyurethane modified acrylic resin for compounding. By adopting the prepolymer, gloss oil can be coated on a film and solidified to form a film, the gloss is low and can be reduced to about 1 degree, the printing product rendering degree can be improved, and the gloss oil has the visual effect like oil painting.
The second prepolymer is an isocyanate-modified acrylic resin, preferably a diisocyanate-modified acrylic resin. By adopting the diisocyanate modified acrylic resin, the reaction can be participated in during UV curing on one hand, and the reaction can be performed with hydroxyl generated on the surface of the film during corona on the other hand, so that the adhesion of the gloss oil coating is improved.
The first reactive diluent is a monomer with TG less than 0 ℃ and molecular weight more than 220. Since monomers are volatile and may cause an irritating odor in the environment when the molecular weight is too small, the above problems can be avoided by selecting monomers having a molecular weight of > 220. The first reactive diluent can be acrylate monomers, and can also be monofunctional reactive monomers, difunctional reactive monomers and multifunctional reactive monomers containing ether structures. The first reactive diluent is selected from tripropylene glycol diacrylate (TPGDA), dodecyl 2-acrylate (LA), isodecyl acrylate (IDA), polyethylene glycol diacrylic acid acetate series (PEGDA), ethoxylated bisphenol A diacrylic acid acetate (BPA (EO)nDA), 1, 6-hexanediol diacrylate (HDDA). In practice, it is most preferable to select a polyfunctional reactive monomer having an ether structure.
The second reactive diluent may be a trifunctional or higher reactive monomer, and in practice, a trifunctional or higher reactive monomer containing an aromatic ring or a hydroxyl group is most preferable. The second reactive diluent is selected from trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate (TMP (EO)nTA), pentaerythritol tetraacrylate (PETTA), etc., which can be selected according to actual needs. In practice, by selecting compounds containing aromatic rings or hydroxy groupsThe active monomer with more than three functionality can improve the hardness after film forming, and can also be crosslinked with the second prepolymer to improve the adhesive force of the coating.
The filler can be selected from polydimethylsiloxane. And the weight part of the filler is set within the above range, on the one hand, the soft touch after film formation of the coating can be increased, and on the other hand, the surface recoatability is not affected.
The antibacterial agent can be one or more of nano silver, complex silver ions, nano titanium dioxide and nano zirconium oxide, and can be selected according to actual requirements. The leveling agent can be one or more of BYK3500 and TEGO FLOW 300. The photoinitiator can be selected from one or more of Darocur-1173 and Irgacure 184 Irgacure2959, and can be selected according to actual requirements.
In the present example, when the weight part of the first reactive diluent is set in the above range, the coating layer can be provided with a soft touch after film formation while the system viscosity can be adjusted. When the weight part of the second reactive diluent is set within the above range, the hardness and the adhesion after film formation can be improved. During the implementation, accessible adjust the proportion of first active diluent and second active diluent, obtain the coating that soft sense of touch is different, for example along with the continuous increase of second active diluent proportion for hardness and adhesive force after the film forming constantly improve, promote coating scratch resistance, but coating sense of touch can be by soft sense of touch gradually to smooth sense of touch transition.
Further, the weight portion of the filler also influences the touch feeling of the coating, and the touch feeling of the coating is changed from soft touch feeling to rubber touch feeling along with the increasing proportion of the filler, for example, the touch feeling of the coating is changed from soft touch feeling to rubber touch feeling by gradually increasing the using amount of the polydimethylsiloxane.
As shown in FIG. 1, the invention also discloses a preparation method of the solvent-free UV gloss oil, which comprises the following steps:
firstly, uniformly mixing 5-25 parts of first prepolymer, 50-80 parts of first reactive diluent, 0-20 parts of second reactive diluent, 1-5 parts of antibacterial agent and 0.01-0.1 part of flatting agent, and dispersing at high speed for 5 minutes under the condition of 500 r/min.
Specifically, in the implementation, the first prepolymer, the first reactive diluent, the second reactive diluent, the antibacterial agent and the leveling agent in parts by weight are uniformly mixed in a pulling cylinder. After being mixed uniformly, the mixture was stirred by a high-speed disperser, which stirred for 5 minutes at 500 revolutions per minute, to mix the liquid materials uniformly.
And secondly, adding 0-10 parts of filler and 2-10 parts of photoinitiator into the mixture treated in the first step, and dispersing at high speed for 45-80 minutes under the condition of 800-1000 r/min.
Specifically, after the respective mixtures were obtained by the first step, the respective fillers and photoinitiators were further added to the mixtures in respective parts by weight. After the filler and the photoinitiator are added, further stirring by a high-speed dispersion machine, wherein the high-speed dispersion machine is used for stirring for 45-80 minutes under the condition of 800-1000 revolutions per minute. Dispersing at high speed for a long time to fully break up the powder and suspend the powder in the material
And thirdly, adding 0-3 parts of a second prepolymer into the mixture treated in the second step, and dispersing at a high speed for 5 minutes under the condition of 500 r/min.
Specifically, after obtaining the respective mixtures by the second step, the respective parts by weight of the second prepolymer are further added to the mixtures. After the second prepolymer is added, the mixture is further stirred by a high-speed disperser, and the solvent-free UV gloss oil can be obtained by stirring the mixture for 5 minutes at 500 revolutions per minute by the high-speed disperser. The final addition can extend the open time of the system, since the second prepolymer will react with water in the air, resulting in a shorter open time of the system.
As shown in FIG. 2, the invention also discloses a using method of the solvent-free UV gloss oil, which comprises the following steps:
firstly, carrying out corona treatment on the surface of a film;
secondly, coating the solvent-free UV gloss oil on the surface of the film subjected to corona treatment;
and finally, carrying out secondary curing treatment on the film treated in the previous step through a UV curing system.
Specifically, in use, the surface to be coated with the solvent-free UV varnish is first subjected to corona treatment. After corona treatment of the film surface, the solvent-free UV varnish may be applied to the film surface by roll coating, including but not limited to gravure coating, micro gravure coating, and slot coating. And after the solvent-free UV gloss oil is coated, the film passes through a UV curing system, and is subjected to secondary curing by the UV curing system, so that the matte soft touch film can be obtained. The surface of the matte soft touch film has a uniform matte effect and a soft touch like skin or velvet. And after the solvent-free UV gloss oil is cured by the UV curing system, the surface of the solvent-free UV gloss oil has a micron-nanometer composite structure, so that the infiltration and the residue of hand oil and hand sweat can be reduced, fingerprints are not easy to remain on the surface of the coating, and the coating is endowed with the characteristic of fingerprint pollution resistance.
Several examples are listed below, comparing the effects produced by different ratios:
from the above, the solvent-free UV gloss oil has better adhesive force to the coating and wider application range, and can be suitable for various plastic base materials such as BOPP, PET, NY, PVC and the like. Meanwhile, the content proportion of various components in the solvent-free UV gloss oil can endow the film with the performances of matte, soft touch, scratch resistance, antibiosis and the like after the film is coated and cured to form a film.
Therefore, the scope of the present invention should not be limited to the disclosure of the embodiments, but includes various alternatives and modifications without departing from the scope of the present invention, which is defined by the claims of the present patent application.
Claims (10)
1. The solvent-free UV gloss oil is characterized by comprising the following components in parts by weight:
5-25 parts of a first prepolymer;
0-3 parts of a second prepolymer;
50-80 parts of a first reactive diluent;
0-20 parts of a second reactive diluent;
0-10 parts of a filler;
2-10 parts of a photoinitiator.
2. The solventless UV varnish according to claim 1, wherein the first reactive diluent is a monomer having TG < 0 ℃ and a molecular weight > 220.
3. The solventless UV varnish according to claim 2, wherein the first reactive diluent is selected from one or more combinations of monofunctional reactive monomers, difunctional reactive monomers, and multifunctional reactive monomers having an ether structure.
4. The solventless UV varnish according to claim 1, wherein the second reactive diluent is a reactive monomer having at least three functionalities, preferably the second reactive diluent has an aromatic ring or a hydroxyl group.
5. The solvent-free UV gloss oil of claim 4, wherein the second reactive diluent is one or more compounds selected from trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, pentaerythritol tetraacrylate.
6. The solvent-free UV gloss oil of claim 1, wherein the first prepolymer is a prepolymer with a functionality of 2-3, a molecular weight of 3500g/Mol or more and an elongation at break of more than 100%, and preferably the first prepolymer is selected from one or a combination of hyperbranched acrylic acid-modified polyester resin, three-arm star-shaped polyurethane-modified acrylic resin and four-arm star-shaped polyurethane-modified acrylic resin.
7. The solventless UV varnish according to claim 1, wherein the second prepolymer is an isocyanate modified acrylic resin, preferably the second prepolymer is a diisocyanate modified acrylic resin.
8. The solvent-free UV varnish according to claim 1, further comprising 1-5 parts of an antibacterial agent.
9. A method for preparing the solvent-free UV gloss oil according to any one of claims 1 to 8, characterized in that the method comprises the following steps:
s100, uniformly mixing 5-25 parts of first prepolymer, 50-80 parts of first reactive diluent, 0-20 parts of second reactive diluent and 0.01-0.1 part of flatting agent, and dispersing at a high speed for 5 minutes under the condition of 500 r/min;
s200, adding 0-10 parts of filler and 2-10 parts of photoinitiator into the mixture treated in the step S100, and dispersing at high speed for 45-80 minutes under the condition of 800-1000 r/min;
and S300, adding 0-3 parts of second prepolymer into the mixture treated in the step S200, and dispersing at a high speed for 5 minutes under the condition of 500 r/min.
10. A method of using the solvent-free UV varnish of any one of claims 1 to 8, wherein the method comprises:
s100', performing corona treatment on the surface of the film;
s200', coating solvent-free UV gloss oil on the surface of the film subjected to corona treatment;
and S300', carrying out secondary curing on the film processed in the step S200' by a UV curing system.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893382A (en) * | 2017-04-01 | 2017-06-27 | 北京康得新功能材料有限公司 | The full scratch-resistant coating of light containing UV and preparation method thereof admittedly of BOPP pre-coating films |
| CN106905767A (en) * | 2017-03-23 | 2017-06-30 | 上达电子（深圳）股份有限公司 | Photosensitive-ink, its preparation method and its application containing hyperbranched UV solidification WPU prepolymers |
| CN113861814A (en) * | 2021-08-25 | 2021-12-31 | 张家港保税区康得菲尔实业有限公司 | Solvent-free UV gloss oil and matte film |
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- 2022-02-21 CN CN202210156540.3A patent/CN114716878A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106905767A (en) * | 2017-03-23 | 2017-06-30 | 上达电子（深圳）股份有限公司 | Photosensitive-ink, its preparation method and its application containing hyperbranched UV solidification WPU prepolymers |
| CN106893382A (en) * | 2017-04-01 | 2017-06-27 | 北京康得新功能材料有限公司 | The full scratch-resistant coating of light containing UV and preparation method thereof admittedly of BOPP pre-coating films |
| CN113861814A (en) * | 2021-08-25 | 2021-12-31 | 张家港保税区康得菲尔实业有限公司 | Solvent-free UV gloss oil and matte film |
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| 王鸿儒, 中国轻工业出版社 * |
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Application publication date: 20220708 |