CN115558450B - Water-based thermal transfer glue and application thereof - Google Patents
Water-based thermal transfer glue and application thereof Download PDFInfo
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- CN115558450B CN115558450B CN202211098118.3A CN202211098118A CN115558450B CN 115558450 B CN115558450 B CN 115558450B CN 202211098118 A CN202211098118 A CN 202211098118A CN 115558450 B CN115558450 B CN 115558450B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 239000003292 glue Substances 0.000 title claims abstract description 57
- 229920001225 polyester resin Polymers 0.000 claims abstract description 61
- 239000004645 polyester resin Substances 0.000 claims abstract description 61
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000008367 deionised water Substances 0.000 claims abstract description 25
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 19
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 19
- 239000003054 catalyst Substances 0.000 claims abstract description 19
- 239000006184 cosolvent Substances 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 16
- PXGZQGDTEZPERC-UHFFFAOYSA-N 1,4-cyclohexanedicarboxylic acid Chemical compound OC(=O)C1CCC(C(O)=O)CC1 PXGZQGDTEZPERC-UHFFFAOYSA-N 0.000 claims abstract description 13
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims abstract description 13
- QWGRWMMWNDWRQN-UHFFFAOYSA-N 2-methylpropane-1,3-diol Chemical compound OCC(C)CO QWGRWMMWNDWRQN-UHFFFAOYSA-N 0.000 claims abstract description 13
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 claims abstract description 13
- 235000011037 adipic acid Nutrition 0.000 claims abstract description 13
- 239000001361 adipic acid Substances 0.000 claims abstract description 13
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 claims abstract description 13
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 claims abstract description 13
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 229920003023 plastic Polymers 0.000 claims abstract description 11
- 239000004033 plastic Substances 0.000 claims abstract description 11
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 9
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 18
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 10
- 238000006068 polycondensation reaction Methods 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 230000003472 neutralizing effect Effects 0.000 claims description 7
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 6
- -1 3, 5-di-tert-butyl-4-hydroxyphenyl Chemical group 0.000 claims description 6
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical group CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 6
- 229960002887 deanol Drugs 0.000 claims description 6
- 239000012972 dimethylethanolamine Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 4
- ISKQADXMHQSTHK-UHFFFAOYSA-N [4-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=C(CN)C=C1 ISKQADXMHQSTHK-UHFFFAOYSA-N 0.000 claims description 4
- BVFSYZFXJYAPQJ-UHFFFAOYSA-N butyl(oxo)tin Chemical group CCCC[Sn]=O BVFSYZFXJYAPQJ-UHFFFAOYSA-N 0.000 claims description 4
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical group OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 4
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 238000001035 drying Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 150000007519 polyprotic acids Polymers 0.000 abstract description 2
- 150000005846 sugar alcohols Polymers 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 description 18
- 238000010023 transfer printing Methods 0.000 description 9
- 239000002985 plastic film Substances 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 238000002156 mixing Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- 229920002799 BoPET Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 238000007761 roller coating Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000007747 plating Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
-
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/60—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds
-
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
The invention discloses aqueous heat transfer glue and application thereof. The aqueous heat transfer glue comprises the following raw materials: the aqueous polyester resin, silica micropowder and deionized water, wherein the aqueous polyester resin comprises the following raw materials: neopentyl glycol, 2-methyl-1, 3-propanediol, hexanediol, trimethylolpropane, dimethylolpropionic acid, 1, 4-cyclohexanedicarboxylic acid, adipic acid, phthalic anhydride, catalyst, antioxidant, cosolvent, neutralizer and deionized water. The invention prepares a self-drying water-based polyester resin with higher molecular weight by reasonably designing the types and weight ratio of the polyalcohol and the polybasic acid and optimizing the synthesis process conditions, and prepares a heat transfer glue by taking the water-based polyester resin as a main raw material. The glue has the characteristics of convenient coating operation, quick drying, dry and non-back adhesion of glue layers and the like, and has excellent hot stamping bonding fastness to films such as ABS, PC, PVC, PET, plastics, aluminized films, coated paper and other materials.
Description
Technical Field
The invention belongs to the technical field of environment-friendly special printing materials, and particularly relates to water-based thermal transfer glue with water-based polyester resin as a main body and application thereof.
Background
The heat transfer printing films such as heat transfer printing films and electric aluminum are widely popularized and applied in the packaging industry, the demand is very large, but the heat transfer printing glue adopted at present is mainly solvent type glue, volatile organic pollutants (VOCs) are seriously polluted, the varieties of environment-friendly water-based heat transfer printing glue are relatively few, and especially the heat transfer printing glue with wide applicable material range and excellent heat transfer printing bonding fastness for various packaging materials such as plastic, film, aluminized paper and the like is lacking. The low molecular weight aqueous polyester resin and the high performance paint prepared by matching with amino resin or isocyanate prepolymer generally have the characteristics of wide application range of base materials, excellent adhesive force, good weather resistance and the like, and the molecular weight of the commercial aqueous polyester resin used as the two-component paint is generally less than 3000, but the low molecular weight polyester single-component resin is generally small in cohesive strength and can not be self-dried, so that the low molecular weight aqueous polyester resin can not be used as the heat transfer glue. According to the special requirements of the heat transfer industry, the invention aims to develop the high molecular weight self-drying water-based polyester resin and develop the function of the water-based polyester resin as heat transfer glue, and the main technical requirement of the glue is that the glue can be suitable for operation production of a coating machine, is quick to dry, and has excellent hot stamping adhesive force on common plastic, film, aluminized paper and other packaging materials.
Disclosure of Invention
Based on the problems, the invention aims to develop the water-based heat transfer glue taking the water-based polyester resin as a main body, and provides a novel environment-friendly water-based glue with wide application range for the heat transfer industry. The main content of the invention is to prepare a high molecular weight self-drying water-based polyester resin by reasonably designing the types and weight ratio of the polyalcohol and the polybasic acid and optimizing the synthesis process conditions, and to prepare a heat transfer glue by taking the water-based polyester resin as a main raw material, and to apply the glue as a back glue of a heat transfer film to ABS, PC, PVC, PET plastics and hot stamping of base materials such as aluminized films, coated papers and the like.
The specific invention comprises the following steps:
the invention firstly provides aqueous heat transfer glue which comprises the following raw materials in parts by weight: 40-50 parts of water-based polyester resin, 1-2 parts of silica micropowder and 48-59 parts of deionized water.
The preparation steps of the water-based heat transfer glue are as follows: mixing the water-based polyester resin, the silicon dioxide micro powder and the deionized water, and uniformly dispersing at a high speed to obtain the water-based thermal transfer glue.
Preferably, the aqueous polyester resin comprises the following raw materials in parts by weight: 97 to 213 parts of neopentyl glycol, 43 to 127 parts of 2-methyl-1, 3-propanediol, 72 to 135 parts of hexanediol, 0 to 26 parts of trimethylolpropane, 55 to 100 parts of dimethylolpropionic acid, 125 to 242 parts of 1, 4-cyclohexanedicarboxylic acid, 136 to 307 parts of adipic acid, 121 to 297 parts of phthalic anhydride, 0.5 to 1.0 parts of catalyst, 0.5 to 1.5 parts of antioxidant, 200 to 300 parts of cosolvent, 43 to 79 parts of neutralizer and 700 to 800 parts of deionized water.
Preferably, the catalyst is selected from monobutyl tin oxide or dibutyl tin diacetate.
Preferably, the antioxidant is selected from pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] or stearyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate.
Preferably, the cosolvent is at least one selected from isopropanol and ethylene glycol butyl ether.
Preferably, the neutralizing agent is dimethylethanolamine.
Preferably, the preparation steps of the aqueous heat transfer glue are as follows: adding neopentyl glycol, 2-methyl-1, 3-propanediol, hexanediol, trimethylolpropane, dimethylolpropionic acid, 1, 4-cyclohexanedicarboxylic acid, adipic acid, phthalic anhydride, an antioxidant and a catalyst into a reaction vessel according to the formula proportion; vacuumizing and introducing nitrogen to restore normal pressure; heating to 160 ℃, preserving heat for 1 hour, and fully and uniformly stirring; then heating to 180-190 ℃, and preserving heat for 2 hours; then heating to 220-230 ℃ and preserving heat for 2-3 hours; removing water generated by the polycondensation reaction through a condensing pipe and a water separator in the reaction process; controlling the reaction until the acid value is lower than 30-50 mgKOH/g, then cooling to 60-70 ℃, and adding cosolvent; and then further cooling to below 50 ℃, sequentially adding a neutralizing agent and deionized water, and fully and uniformly stirring to obtain the water-based polyester resin.
The invention further provides application of the aqueous thermal transfer glue, and in particular relates to application of the aqueous thermal transfer glue as a back glue of a thermal transfer film or an electrochemical aluminum film to hot stamping of ABS plastic, PC plastic, PVC plastic, PET plastic, aluminum plating film and coated paper. The heat transfer glue can be used as heat transfer film glue, can be sized by a common coater, is convenient to coat and operate, and has the characteristics of quick drying, dry and comfortable glue layer, no back adhesion and the like. The glue is hot stamped on plastics such as ABS, PC, PVC, PET, and aluminum plating films and coated paper materials, has excellent hot stamping bonding fastness, and the fastness can pass a hundred-grid test (the test method is seen in national standards of the people's republic of China, cross-cut test of color paint and varnish films).
Detailed Description
The following detailed description of specific embodiments of the invention is provided in connection with specific examples which are intended to be illustrative, but not limiting, of the scope of the invention.
Example 1
(1) Preparation of aqueous polyester resin
The aqueous polyester resin comprises the following raw materials in parts by weight: 149 parts of neopentyl glycol, 43 parts of 2-methyl-1, 3-propanediol, 135 parts of hexanediol, 26 parts of trimethylolpropane, 77 parts of dimethylolpropionic acid, 130 parts of 1, 4-cyclohexane dicarboxylic acid, 278 parts of adipic acid, 162 parts of phthalic anhydride, 0.5 part of catalyst, 1.5 parts of antioxidant, 200 parts of cosolvent, 65 parts of neutralizer and 800 parts of deionized water. The catalyst is monobutyl tin oxide; the antioxidant is pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ]; the cosolvent is a mixture of ethylene glycol butyl ether and isopropanol (ethylene glycol butyl ether: isopropanol=2:8 mass ratio); the neutralizer is dimethylethanolamine.
The preparation method of the aqueous polyester resin by adopting the melt polycondensation method comprises the following steps: neopentyl glycol, 2-methyl-1, 3-propanediol, hexanediol, trimethylolpropane, dimethylolpropionic acid, 1, 4-cyclohexanedicarboxylic acid, adipic acid, phthalic anhydride, an antioxidant and a catalyst are added into a reaction vessel in proportion; vacuumizing and introducing nitrogen to restore normal pressure; heating to 160 ℃, preserving heat for 1 hour, and fully and uniformly stirring; then heating to 180-190 ℃, and preserving heat for 2 hours; then heating to 220-230 ℃ and preserving heat for 2 hours; removing water generated by the polycondensation reaction through a condensing pipe and a water separator in the reaction process; reacting until the acid value is lower than 40mgKOH/g, cooling to 60-70 ℃, and adding cosolvent; then further cooling to below 50 ℃, sequentially adding a neutralizing agent and deionized water, and fully and uniformly stirring to obtain the aqueous polyester resin, wherein the solid content of the obtained aqueous polyester resin is 49%, the hydroxyl value of the obtained aqueous polyester resin is 18mgKOH/g, and the acid value of the obtained aqueous polyester resin is less than 3mgKOH/g, and the relative molecular weight of the obtained aqueous polyester resin is 15000.
(2) Preparation and application effects of water-based heat transfer glue
The aqueous heat transfer glue comprises the following raw materials in parts by weight: 40 parts of aqueous polyester resin, 1 part of silica micropowder (micron-sized) and 59 parts of deionized water. The preparation method comprises the following steps: mixing the water-based polyester resin, the silica micropowder and the deionized water according to a proportion, and uniformly dispersing at a high speed to obtain the water-based heat transfer glue.
The viscosity of the thermal transfer glue is 13-14 seconds (No. 4 paint cup, 25 ℃). The back adhesive used as the heat transfer printing film is sized by a 120-wire mesh roller coating process, the temperature of a drying tunnel is 100-110 ℃, and the back adhesive is not sticky after being rolled up. The thermal transfer printing flower film is respectively hot stamped on an ABS plastic sheet, a PC plastic sheet, a PVC film, a PET film, an aluminized film and coated paper, and adopts a hundred-grid method to carry out adhesion test, wherein the adhesion grades are all 0 grades, and the thermal transfer printing flower film has excellent hot stamping bonding fastness. The test method is referred to GB/T9286-88. Cross-hatch test of color paint and varnish film in national standards of the people's republic of China.
Example 2
(1) Preparation of aqueous polyester resin
The aqueous polyester resin comprises the following raw materials in parts by weight: 97 parts of neopentyl glycol, 127 parts of 2-methyl-1, 3-propanediol, 88 parts of hexanediol, 100 parts of dimethylolpropionic acid, 242 parts of 1, 4-cyclohexane dicarboxylic acid, 136 parts of adipic acid, 210 parts of phthalic anhydride, 1 part of catalyst, 1 part of antioxidant, 300 parts of cosolvent, 79 parts of neutralizer and 700 parts of deionized water. The catalyst is dibutyl tin diacetate; the antioxidant is pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ]; the cosolvent is isopropanol; the neutralizer is dimethylethanolamine.
The preparation method of the aqueous polyester resin by adopting the melt polycondensation method comprises the following steps: neopentyl glycol, 2-methyl-1, 3-propanediol, hexanediol, dimethylolpropionic acid, 1, 4-cyclohexanedicarboxylic acid, adipic acid, phthalic anhydride, antioxidant and catalyst are added into a reaction vessel in proportion; vacuumizing and introducing nitrogen to restore normal pressure; heating to 160 ℃, preserving heat for 1 hour, and fully and uniformly stirring; then heating to 180-190 ℃, and preserving heat for 2 hours; then heating to 220-230 ℃ and preserving heat for 2 hours; removing water generated by the polycondensation reaction through a condensing pipe and a water separator in the reaction process; reacting until the acid value is lower than 50mgKOH/g, cooling to 60-70 ℃, and adding a cosolvent; then further cooling to below 50 ℃, sequentially adding a neutralizing agent and deionized water, and fully and uniformly stirring to obtain the water-based polyester resin, wherein the solid content of the obtained water-based polyester resin is 48%, the hydroxyl value of the obtained water-based polyester resin is 11mgKOH/g, and the acid value of the obtained water-based polyester resin is less than 3mgKOH/g, and the relative molecular weight of the obtained water-based polyester resin is 9000.
(2) Preparation and application effects of water-based heat transfer glue
The aqueous heat transfer glue comprises the following raw materials in parts by weight: 45 parts of aqueous polyester resin, 2 parts of silica micropowder (micron-sized) and 53 parts of deionized water. The preparation method comprises the following steps: mixing the water-based polyester resin, the silica micropowder and the deionized water according to a proportion, and uniformly dispersing at a high speed to obtain the water-based heat transfer glue.
The heat transfer glue is used as the back glue of the electrochemical aluminum film, and is sized by a 120-wire mesh roller coating process. The electrochemical aluminum film is respectively hot stamped on an ABS plastic sheet, a PC plastic sheet, a PVC film, a PET film, an aluminum plating film and coated paper, and the adhesive force is measured by a hundred-grid method, the adhesive force grades are all 0 grades, and the adhesive strength has excellent hot stamping bonding fastness. (for test methods see GB/T9286-88).
Example 3
(1) Preparation of aqueous polyester resin
The aqueous polyester resin comprises the following raw materials in parts by weight: 151 parts of neopentyl glycol, 99 parts of 2-methyl-1, 3-propanediol, 96 parts of hexanediol, 73 parts of dimethylolpropionic acid, 125 parts of 1, 4-cyclohexane dicarboxylic acid, 159 parts of adipic acid, 297 parts of phthalic anhydride, 1 part of a catalyst, 0.5 part of an antioxidant, 300 parts of a cosolvent, 62 parts of a neutralizer and 700 parts of deionized water. The catalyst is monobutyl tin oxide; the antioxidant is beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate; the cosolvent is a mixture of ethylene glycol butyl ether and isopropanol (ethylene glycol butyl ether: isopropanol=1:9 mass ratio); the neutralizer is dimethylethanolamine.
The preparation method of the aqueous polyester resin by adopting the melt polycondensation method comprises the following steps: neopentyl glycol, 2-methyl-1, 3-propanediol, hexanediol, dimethylolpropionic acid, 1, 4-cyclohexanedicarboxylic acid, adipic acid, phthalic anhydride, antioxidant and catalyst are added into a reaction vessel in proportion; vacuumizing and introducing nitrogen to restore normal pressure; heating to 160 ℃, preserving heat for 1 hour, and fully and uniformly stirring; then heating to 180-190 ℃, and preserving heat for 2 hours; then heating to 220-230 ℃, and preserving heat for 3 hours; removing water generated by the polycondensation reaction through a condensing pipe and a water separator in the reaction process; reacting until the acid value is lower than 35mgKOH/g, cooling to 60-80 ℃, and adding a cosolvent; then further cooling to below 50 ℃, sequentially adding a neutralizing agent and deionized water, and fully and uniformly stirring to obtain the water-based polyester resin, wherein the solid content of the water-based polyester resin is 46%, the hydroxyl value of the water-based polyester resin is 9mgKOH/g, the acid value of the water-based polyester resin is less than 3mgKOH/g, and the relative molecular weight of the water-based polyester resin is 11000.
(2) Preparation and application effects of water-based heat transfer glue
The aqueous heat transfer glue comprises the following raw materials in parts by weight: 50 parts of aqueous polyester resin, 2 parts of silica micropowder (micron-sized) and 48 parts of deionized water. The preparation method comprises the following steps: mixing the water-based polyester resin, the silica micropowder and the deionized water according to a proportion, and uniformly dispersing at a high speed to obtain the water-based heat transfer glue.
The glue is used as the back glue of the thermal transfer film, and is sized by a 120-wire mesh roller coating process, and the temperature of a drying channel is controlled to be 100-110 ℃. Has the characteristics of quick drying of the adhesive layer, dry and comfortable winding and no back adhesion. The thermal transfer film is respectively hot stamped on an ABS plastic sheet, a PC plastic sheet, a PVC film, a PET film, an aluminized film and coated paper, and has excellent hot stamping bonding fastness by adopting a hundred-grid method adhesion test, wherein the adhesion grades are all 0 grade. (for test methods see GB/T9286-88).
Example 4
(1) Preparation of aqueous polyester resin
The aqueous polyester resin comprises the following raw materials in parts by weight: 213 parts of neopentyl glycol, 74 parts of 2-methyl-1, 3-propanediol, 72 parts of hexanediol, 55 parts of dimethylolpropionic acid, 158 parts of 1, 4-cyclohexane dicarboxylic acid, 307 parts of adipic acid, 121 parts of phthalic anhydride, 0.5 part of catalyst, 0.5 part of antioxidant, 200 parts of cosolvent, 43 parts of neutralizer and 800 parts of deionized water. The catalyst is dibutyl tin diacetate; the antioxidant is beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate; the cosolvent is isopropanol; the neutralizer is dimethylethanolamine.
The preparation method of the aqueous polyester resin by adopting the melt polycondensation method comprises the following steps: neopentyl glycol, 2-methyl-1, 3-propanediol, hexanediol, dimethylolpropionic acid, 1, 4-cyclohexanedicarboxylic acid, adipic acid, phthalic anhydride, antioxidant and catalyst are added into a reaction vessel in proportion; vacuumizing and introducing nitrogen to restore normal pressure; heating to 160 ℃, preserving heat for 1 hour, and fully and uniformly stirring; then heating to 180-190 ℃, and preserving heat for 2 hours; then heating to 220-230 ℃ and preserving heat for 2 hours; removing water generated by the polycondensation reaction through a condensing pipe and a water separator in the reaction process; reacting until the acid value is lower than 30mgKOH/g, cooling to 60-70 ℃, and adding a cosolvent; then further cooling to below 50 ℃, sequentially adding a neutralizing agent and deionized water, and fully and uniformly stirring to obtain the water-based polyester resin, wherein the solid content of the water-based polyester resin is 50%, the hydroxyl value of the water-based polyester resin is 6mgKOH/g, the acid value of the water-based polyester resin is less than 3mgKOH/g, and the relative molecular weight of the water-based polyester resin is 18000.
(2) Preparation and application effects of water-based heat transfer glue
The aqueous heat transfer glue comprises the following raw materials in parts by weight: 45 parts of aqueous polyester resin, 1 part of silica micropowder (micron-sized) and 54 parts of deionized water. The preparation method comprises the following steps: mixing the water-based polyester resin, the silica micropowder and the deionized water according to a proportion, and uniformly dispersing at a high speed to obtain the water-based heat transfer glue.
The glue is used as the back glue of the thermal transfer film, and is sized by a 120-wire mesh roller coating process, the temperature of a drying channel is controlled to be 100-110 ℃, and the glue layer is fast to dry and is dry to roll and is not sticky. The thermal transfer film is respectively hot stamped on an ABS plastic sheet, a PC plastic sheet, a PVC film, a PET film, an aluminized film and coated paper, and has excellent hot stamping bonding fastness by adopting a hundred-grid method adhesion test, wherein the adhesion grades are all 0 grade. (for test methods see GB/T9286-88).
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that the above-mentioned preferred embodiment should not be construed as limiting the invention, and the scope of the invention should be defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (4)
1. The water-based heat transfer glue is characterized by comprising the following raw materials in parts by weight: 40-50 parts of water-based polyester resin, 1-2 parts of silica micropowder and 48-59 parts of deionized water;
the aqueous polyester resin comprises the following raw materials in parts by weight: 97 to 213 parts of neopentyl glycol, 43 to 127 parts of 2-methyl-1, 3-propanediol, 72 to 135 parts of hexanediol, 0 to 26 parts of trimethylolpropane, 55 to 100 parts of dimethylolpropionic acid, 125 to 242 parts of 1, 4-cyclohexanedicarboxylic acid, 136 to 307 parts of adipic acid, 121 to 297 parts of phthalic anhydride, 0.5 to 1.0 parts of catalyst, 0.5 to 1.5 parts of antioxidant, 200 to 300 parts of cosolvent, 43 to 79 parts of neutralizer and 700 to 800 parts of deionized water;
the catalyst is selected from monobutyl tin oxide or dibutyl tin diacetate;
the antioxidant is selected from pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] or stearyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate;
the cosolvent is at least one selected from isopropanol and ethylene glycol butyl ether;
the neutralizer is dimethylethanolamine.
2. The aqueous thermal transfer glue according to claim 1, wherein the aqueous polyester resin is prepared by the steps of: adding neopentyl glycol, 2-methyl-1, 3-propanediol, hexanediol, trimethylolpropane, dimethylolpropionic acid, 1, 4-cyclohexanedicarboxylic acid, adipic acid, phthalic anhydride, an antioxidant and a catalyst into a reaction vessel according to the formula proportion; vacuumizing and introducing nitrogen to restore normal pressure; heating to 160 ℃, preserving heat for 1 hour, and fully and uniformly stirring; then heating to 180-190 ℃, and preserving heat for 2 hours; then heating to 220-230 ℃ and preserving heat for 2-3 hours; removing water generated by the polycondensation reaction through a condensing pipe and a water separator in the reaction process; controlling the reaction until the acid value is lower than 30-50 mgKOH/g, then cooling to 60-70 ℃, and adding cosolvent; and then further cooling to below 50 ℃, sequentially adding a neutralizing agent and deionized water, and fully and uniformly stirring to obtain the water-based polyester resin.
3. The application of the aqueous thermal transfer glue in hot stamping of ABS plastic, PC plastic, PVC plastic, PET plastic, aluminizer and coated paper.
4. The use according to claim 3, wherein the aqueous heat transfer glue is applied as a back glue for heat transfer films or galvanic aluminum films for hot stamping.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014208741A (en) * | 2013-03-26 | 2014-11-06 | 東洋紡株式会社 | Polyester resin aqueous dispersion and adhesive composition using the same |
| CN105419655A (en) * | 2015-12-22 | 2016-03-23 | 武汉华工图像技术开发有限公司 | Holographic electrochemical aluminum hot stamping adhesive and preparation method thereof |
| CN106750225A (en) * | 2016-12-07 | 2017-05-31 | 浩力森化学科技（江苏）有限公司 | A kind of aqueous polyester resin, preparation method and the functional aid based on it |
| CN107090269A (en) * | 2017-05-19 | 2017-08-25 | 上海绘兰材料科技有限公司 | A kind of aqueous adhesive for electrochemical aluminum and preparation method thereof and application method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014208741A (en) * | 2013-03-26 | 2014-11-06 | 東洋紡株式会社 | Polyester resin aqueous dispersion and adhesive composition using the same |
| CN105419655A (en) * | 2015-12-22 | 2016-03-23 | 武汉华工图像技术开发有限公司 | Holographic electrochemical aluminum hot stamping adhesive and preparation method thereof |
| CN106750225A (en) * | 2016-12-07 | 2017-05-31 | 浩力森化学科技（江苏）有限公司 | A kind of aqueous polyester resin, preparation method and the functional aid based on it |
| CN107090269A (en) * | 2017-05-19 | 2017-08-25 | 上海绘兰材料科技有限公司 | A kind of aqueous adhesive for electrochemical aluminum and preparation method thereof and application method |
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