CN115748266A - Low-temperature direct-injection disperse dye color paste and preparation method and application thereof - Google Patents
Low-temperature direct-injection disperse dye color paste and preparation method and application thereof Download PDFInfo
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- CN115748266A CN115748266A CN202211463356.XA CN202211463356A CN115748266A CN 115748266 A CN115748266 A CN 115748266A CN 202211463356 A CN202211463356 A CN 202211463356A CN 115748266 A CN115748266 A CN 115748266A
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- 239000000986 disperse dye Substances 0.000 title claims abstract description 80
- 238000002347 injection Methods 0.000 title claims abstract description 43
- 239000007924 injection Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000002270 dispersing agent Substances 0.000 claims abstract description 56
- 229920002635 polyurethane Polymers 0.000 claims abstract description 51
- 239000004814 polyurethane Substances 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000003906 humectant Substances 0.000 claims abstract description 20
- 239000004094 surface-active agent Substances 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 11
- 239000002904 solvent Substances 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 8
- 239000000178 monomer Substances 0.000 claims description 8
- 125000005442 diisocyanate group Chemical group 0.000 claims description 7
- 239000003995 emulsifying agent Substances 0.000 claims description 7
- 239000002981 blocking agent Substances 0.000 claims description 6
- 229920000728 polyester Polymers 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- QOSTVEDABRQTSU-UHFFFAOYSA-N 1,4-bis(methylamino)anthracene-9,10-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C(NC)=CC=C2NC QOSTVEDABRQTSU-UHFFFAOYSA-N 0.000 claims description 5
- FDTLQXNAPKJJAM-UHFFFAOYSA-N 2-(3-hydroxyquinolin-2-yl)indene-1,3-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C1C1=NC2=CC=CC=C2C=C1O FDTLQXNAPKJJAM-UHFFFAOYSA-N 0.000 claims description 4
- SVTDYSXXLJYUTM-UHFFFAOYSA-N disperse red 9 Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2NC SVTDYSXXLJYUTM-UHFFFAOYSA-N 0.000 claims description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 4
- 238000007639 printing Methods 0.000 abstract description 20
- 239000004744 fabric Substances 0.000 abstract description 13
- 239000002245 particle Substances 0.000 abstract description 11
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- XOFYZVNMUHMLCC-ZPOLXVRWSA-N prednisone Chemical compound O=C1C=C[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 XOFYZVNMUHMLCC-ZPOLXVRWSA-N 0.000 abstract description 4
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- 230000000052 comparative effect Effects 0.000 description 30
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- 239000007788 liquid Substances 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 description 8
- 150000002009 diols Chemical class 0.000 description 8
- 238000000227 grinding Methods 0.000 description 8
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
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- 239000003899 bactericide agent Substances 0.000 description 6
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- 238000001914 filtration Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical group OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 description 5
- NECRQCBKTGZNMH-UHFFFAOYSA-N 3,5-dimethylhex-1-yn-3-ol Chemical compound CC(C)CC(C)(O)C#C NECRQCBKTGZNMH-UHFFFAOYSA-N 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 229920000515 polycarbonate Polymers 0.000 description 5
- 239000004417 polycarbonate Substances 0.000 description 5
- AZYRZNIYJDKRHO-UHFFFAOYSA-N 1,3-bis(2-isocyanatopropan-2-yl)benzene Chemical compound O=C=NC(C)(C)C1=CC=CC(C(C)(C)N=C=O)=C1 AZYRZNIYJDKRHO-UHFFFAOYSA-N 0.000 description 4
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical group OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000002736 nonionic surfactant Substances 0.000 description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 4
- 229920000191 poly(N-vinyl pyrrolidone) Polymers 0.000 description 4
- ADJMNWKZSCQHPS-UHFFFAOYSA-L zinc;6-methylheptanoate Chemical compound [Zn+2].CC(C)CCCCC([O-])=O.CC(C)CCCCC([O-])=O ADJMNWKZSCQHPS-UHFFFAOYSA-L 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 3
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- 239000003365 glass fiber Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- 229940035437 1,3-propanediol Drugs 0.000 description 2
- JVYDLYGCSIHCMR-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)butanoic acid Chemical compound CCC(CO)(CO)C(O)=O JVYDLYGCSIHCMR-UHFFFAOYSA-N 0.000 description 2
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical group COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 2
- 150000001345 alkine derivatives Chemical class 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- DMSMPAJRVJJAGA-UHFFFAOYSA-N benzo[d]isothiazol-3-one Chemical compound C1=CC=C2C(=O)NSC2=C1 DMSMPAJRVJJAGA-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 description 2
- 229920000056 polyoxyethylene ether Polymers 0.000 description 2
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 229920005552 sodium lignosulfonate Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000010023 transfer printing Methods 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- 229940015975 1,2-hexanediol Drugs 0.000 description 1
- RTTZISZSHSCFRH-UHFFFAOYSA-N 1,3-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC(CN=C=O)=C1 RTTZISZSHSCFRH-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- GUUULVAMQJLDSY-UHFFFAOYSA-N 4,5-dihydro-1,2-thiazole Chemical compound C1CC=NS1 GUUULVAMQJLDSY-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N Tetraethylene glycol, Natural products OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- 239000013078 crystal Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004210 ether based solvent Substances 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- FHKSXSQHXQEMOK-UHFFFAOYSA-N hexane-1,2-diol Chemical compound CCCCC(O)CO FHKSXSQHXQEMOK-UHFFFAOYSA-N 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- 229940113115 polyethylene glycol 200 Drugs 0.000 description 1
- 229940068918 polyethylene glycol 400 Drugs 0.000 description 1
- 229940057847 polyethylene glycol 600 Drugs 0.000 description 1
- 229940085675 polyethylene glycol 800 Drugs 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001289 polyvinyl ether Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229960004063 propylene glycol Drugs 0.000 description 1
- 235000013772 propylene glycol Nutrition 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
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- Inks, Pencil-Leads, Or Crayons (AREA)
- Coloring (AREA)
Abstract
The invention belongs to the technical field of ink-jet ink, and discloses low-temperature direct-injection disperse dye color paste and a preparation method and application thereof. The low-temperature direct-injection disperse dye color paste comprises a low-temperature disperse dye, a polyurethane dispersant, a humectant, a surfactant and water; the molecular weight of the low-temperature disperse dye is less than 300; the weight average molecular weight of the polyurethane dispersant is 20000-30000. The low-temperature disperse dye with the molecular weight less than 300 is selected to be matched with the polyurethane dispersant with the weight-average molecular weight of 20000-30000 to prepare the low-temperature direct-injection disperse dye color paste, the polyurethane dispersant can effectively reduce the particle size and the viscosity of the color paste, and the ink-jet ink prepared by utilizing the color paste has high color fastness and strong printing stability; and the printed cloth has excellent permeability, the front and back sides of the printed cloth are bright and full in color, the difference between the front and back sides is small, and the color difference delta E is less than 0.75.
Description
Technical Field
The invention belongs to the technical field of ink-jet ink, and particularly relates to low-temperature direct-injection disperse dye color paste and a preparation method and application thereof.
Background
The traditional manufacturing process of banners is by watermarking or screen printing. This is a relatively conventional approach for small format, large batch national or organizational flags, and flags for memorial activities. However, for the production of small-lot flags, digital direct-injection printing is a more economical printing method. The digital direct injection printing mode does not need to manufacture a silk screen plate, and the non-monochromatic flags, particularly under the condition of color gradual change or fine and complex patterns, can be printed at one time without a register; and the color transition of the printed flag is more natural, and the pattern is more accurate.
Most of cloth used by the existing flags is terylene fabrics, and the fabrics are superior to cotton, silk and other fabrics in the aspects of fastness, crease resistance and other physical indexes and cost. In the early digital printing mode, the disperse dye ink is printed on the thermal transfer paper by adopting a thermal transfer printing mode, then the disperse dye ink is transferred to the fabric of the flag by a thermal transfer printing machine, and finally the margin is cut to obtain the finished flag. The process is complicated and the cost is high. In addition, because the flag is mostly hung outdoors, high requirements are put forward on the color, water resistance and light color fastness of the flag. The penetration, rubbing color fastness, water color fastness and light color fastness of the ink printed on the flag become important indexes for judging the quality of the flag. At present, the color fastness of more flags is poor, and the color becomes obviously lighter after the flags are hung for a period of time; and the difference of the front and the back of more flags is large, which affects the beauty.
Therefore, it is highly desirable to provide a direct-injection disperse dye color paste, which can be used for preparing an inkjet ink capable of being directly subjected to jet printing and color fixing without using thermal transfer paper; and the ink-jet ink has strong permeability and high color fastness, and the printed flag is not easy to fade, has similar front and back surfaces and small difference.
Disclosure of Invention
The present invention has been made to solve at least one of the above-mentioned problems occurring in the prior art. Therefore, the invention provides a low-temperature direct injection disperse dye color paste, and a preparation method and application thereof. The ink-jet ink prepared by the low-temperature direct-injection disperse dye color paste can be directly subjected to spray printing and color fixation without adopting thermal transfer paper; and the ink-jet ink has strong permeability and high color fastness, and the printed flag is not easy to fade, has similar front and back surfaces and small difference.
The invention provides a low-temperature direct injection disperse dye color paste.
Specifically, the low-temperature direct injection disperse dye color paste comprises a low-temperature disperse dye, a polyurethane dispersant, a humectant, a surfactant and water; the molecular weight of the low-temperature disperse dye is less than 300; the weight average molecular weight of the polyurethane dispersant is 20000-30000.
The low-temperature disperse dye with the molecular weight less than 300 belongs to low-energy disperse dyes, and can convert crystal forms at a lower temperature (160-180 ℃) so that the color becomes more bright. The low-temperature disperse dye has the advantages of small molecular weight, high molecular motion speed, strong penetrating power and deep penetrating distance, and can play a role in high penetration. The polyurethane dispersant with the weight-average molecular weight of 20000-30000 is matched to prepare the color paste, the polyurethane dispersant is beneficial to grinding and dispersing low-temperature disperse dyes, the particle size and viscosity of the color paste can be effectively reduced, and the inkjet ink prepared from the low-temperature direct-injection disperse dye color paste has strong printing stability and is continuous in line; and the fabric has excellent permeability, can penetrate into the fiber of the fabric, and ensures that the front and back surfaces of the fabric have uniform color, are bright and full, and have small difference between the front and back surfaces.
Preferably, the low-temperature direct injection disperse dye color paste comprises, by weight, 10-30 parts of low-temperature disperse dye, 10-30 parts of polyurethane dispersant, 1-20 parts of humectant, 0.1-3 parts of surfactant and 30-70 parts of water.
Preferably, the low-temperature direct injection disperse dye color paste comprises, by weight, 10-25 parts of low-temperature disperse dye, 15-30 parts of polyurethane dispersant, 3-15 parts of humectant, 0.1-0.5 part of surfactant and 30-60 parts of water.
Preferably, the molecular weight of the low-temperature disperse dye is 200-300.
Preferably, the low-temperature disperse dye is selected from at least one of disperse blue 14, disperse red 9 and disperse yellow 54. Wherein the molecular weight of disperse blue 14 is 266.295, the molecular weight of disperse red 9 is 237.25, and the molecular weight of disperse yellow 54 is 289.289.
Preferably, the humectant is at least one selected from the group consisting of ethanol, n-propanol, ethylene glycol, diethylene glycol, 1, 2-propanediol, 1, 3-propanediol, 1, 4-butanediol, 1, 2-hexanediol, 1, 6-hexanediol, glycerol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol 200, polyethylene glycol 400, polyethylene glycol 600, polyethylene glycol 800, methyl ether, and methyl ethyl ketone. The humectant can increase the wetting function of the sprayer and improve the ink fluency.
Preferably, the surfactant is an anionic surfactant or a nonionic surfactant.
Preferably, the nonionic surfactant comprises at least one of a polyethanol nonionic surfactant, a long-chain fatty alcohol-polyoxyethylene ether surfactant and an alkyne ethanol modified surfactant.
The polyethanol type nonionic surfactant includes alkylphenol polyvinyl ethers such as OP-7, OP-10, OP-15 and the like. The long-chain fatty alcohol polyoxyethylene ether surfactant can be peregal series, such as peregal 0-20, peregal 0-25, peregal A-10, and the like). The alkyne ethanol modified surfactant can be at least one selected from Surfynol 420, surfynol 440, surfynol 465, surfynol 485, PSA-96, PSA-85, FS-620, FS-640 and FS-660.
Preferably, the low-temperature direct injection disperse dye color paste also comprises a bactericide; further preferably, the bactericide is 0.1 to 0.5 parts by weight.
Preferably, the bactericide is an isothiazoline, such as Proxel GXL. Because the color paste contains deionized water, the color paste can be sterilized by adding the bactericide, so that mildew can be prevented.
Preferably, the viscosity of the low-temperature direct injection disperse dye color paste at 25 ℃ is 4.0-6.0mP & s.
The invention provides a preparation method of low-temperature direct injection disperse dye color paste.
Specifically, the preparation method of the low-temperature direct injection disperse dye color paste comprises the following steps:
and mixing the low-temperature disperse dye, the polyurethane dispersant, the humectant, the surfactant and water to obtain the low-temperature direct-injection disperse dye color paste.
Preferably, the raw material components for preparing the polyurethane dispersant comprise: polyester diol, diisocyanate monomer, emulsifier, solvent, catalyst and blocking agent.
Preferably, the raw material components for preparing the polyurethane dispersant comprise the following components in parts by weight: 18-32 parts of polyester glycol, 20-35 parts of diisocyanate monomers, 10 parts of emulsifying agents, 30-55 parts of solvents, 0.001-2 parts of catalysts and 0.1-10 parts of blocking agents.
Preferably, the polyester diol is a polycarbonate diol and/or a polycaprolactone diol. The polyurethane prepared by using the polycarbonate diol has excellent weather resistance, hydrolysis resistance and wear resistance.
Preferably, the diisocyanate-based monomer contains a benzene ring structure. Because the low-temperature disperse dyes selected by the invention all have benzene ring structures, the prepared dispersing agent can be tightly combined with the low-temperature disperse dyes by utilizing the strong Pi-Pi bond adsorption of the benzene rings and the benzene rings, is not easy to fall off, and enhances the dispersing capacity.
Further preferably, the diisocyanate-based monomer is at least one selected from the group consisting of m-xylylene isocyanate, toluene diisocyanate, diphenylmethane diisocyanate, and tetramethylm-xylylene diisocyanate.
Preferably, the emulsifier is dimethylolpropionic acid and/or dimethylolbutyric acid. Dimethylolpropionic acid and dimethylolbutyric acid are selected as an emulsifier, and a hydrophilic group is introduced, so that not only is the emulsification reaction facilitated, but also the prepared polyurethane dispersant is more hydrophilic and stable in water, and is beneficial to dispersing low-temperature disperse dyes.
Preferably, the solvent is diethylene glycol monomethyl ether and/or diethylene glycol monobutyl ether. Diethylene glycol monomethyl ether and diethylene glycol monobutyl ether solvents are selected as solvents, and can dissolve monomers, catalysts and prepolymers generated by polymerization reaction, so that the components react quickly in a homogeneous phase. The solvent has high polarity, strong thermal stability, stability to acid and alkali, mutual solubility with water and no corrosiveness.
Preferably, the catalyst is selected from at least one of stannous octoate, zinc isooctanoate and tetrabutyl titanate. The catalyst is useful for increasing the rate of chemical reactions.
Preferably, the blocking agent is diethanolamine and/or triethanolamine. The end capping agent terminates the polymerization reaction, which is beneficial to controlling the molecular weight of the polyurethane dispersant.
Preferably, the raw material components for preparing the polyurethane dispersant further comprise other auxiliaries, including but not limited to pH adjusters, such as potassium hydroxide solution.
Preferably, the preparation method of the polyurethane dispersant is as follows:
dissolving polyester glycol in a solvent to prepare a premixed solution A; dissolving an emulsifier in a solvent to prepare a premixed solution B; mixing diisocyanate monomers with a catalyst to prepare a premixed solution C;
and introducing nitrogen into the premixed liquid A, heating to 70-90 ℃, then dropwise adding the premixed liquid B into the premixed liquid A, uniformly mixing, then adding the premixed liquid C, reacting until the concentration of isocyanate groups (% NCO) is lower than 1.2%, adding a blocking agent and a pH regulator, and finally stirring and filtering to obtain the polyurethane dispersant.
The third aspect of the invention provides the application of the low-temperature direct-injection disperse dye color paste in ink-jet ink.
In a fourth aspect, the present invention provides an ink-jet ink.
Specifically, the ink-jet ink comprises the low-temperature direct-injection disperse dye color paste.
Preferably, the inkjet ink comprises the low-temperature direct injection disperse dye color paste, a humectant, a surfactant and water.
Preferably, the ink-jet ink comprises, by weight, 25-60 parts of low-temperature direct injection disperse dye color paste, 10-40 parts of a humectant, 0.1-1 part of a surfactant and 20-60 parts of water. Further preferably, the ink-jet ink comprises, by weight, 30-50 parts of low-temperature direct-injection disperse dye color paste, 20-30 parts of a humectant, 0.1-0.5 part of a surfactant and 20-45 parts of water.
Preferably, the ink jet ink has a viscosity of 3.0 to 4.0mP s at 25 ℃; further preferably, the viscosity of the ink jet ink is from 3.2 to 4.0mP s at 25 ℃.
The jet ink is suitable for piezoelectric industrial nozzles, and can be adjusted by parameters such as viscosity, surface tension and the like, including but not limited to industrial nozzles such as Epson 5113, epson4720, epson I3200-A1, epson S3200, KJ4B, seiko 508GS, starlight 1024 and the like.
Researches show that the low-temperature disperse dye with the molecular weight less than 300 has good permeability, but has poor color fastness and is not easy to grind and disperse, and when the conventional dispersant is used for dispersing, the dispersion effect is poor, and the permeability is influenced to a certain extent. When the polyurethane dispersant with the weight-average molecular weight of 20000-30000 is used in a matching way, the polyurethane dispersant is beneficial to grinding and dispersing low-temperature disperse dye, can effectively reduce the particle size and viscosity of color paste, and enables ink prepared by the polyurethane dispersant to be directly sprayed and printed; the polyurethane dispersant can improve the color fastness of the ink-jet ink, and when the ink-jet ink is directly sprayed on a flag sample, the dry and wet rubbing color fastness, the water color fastness and the light color fastness of the sample can reach 4 grades and above; the polyurethane dispersant does not influence the permeability of low-temperature disperse dyes, the difference between the front and back surfaces of a printed flag is small, and the color difference delta E is less than 0.75.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a low-temperature direct injection disperse dye color paste, which is characterized in that a low-temperature disperse dye with the molecular weight less than 300 is selected and matched with a polyurethane dispersant with the weight-average molecular weight of 20000-30000 for use, the polyurethane dispersant is beneficial to grinding and dispersing of the low-temperature disperse dye, the particle size and the viscosity of the color paste can be effectively reduced, the ink-jet ink prepared from the low-temperature direct injection disperse dye color paste has high color fastness, and a printed flag is not easy to fade; the printing stability is strong, and the line is not broken; and the fabric has excellent permeability, can penetrate into the fiber of the fabric, and ensures that the front and back surfaces of the fabric have uniform, bright and full colors, the difference between the front and back surfaces is small, and the color difference delta E is less than 0.75.
Detailed Description
In order to make the technical solutions of the present invention more apparent to those skilled in the art, the following examples are given for illustration. It should be noted that the following examples are not intended to limit the scope of the claimed invention.
The following examples and comparative examples dispersed blue 14, dispersed red 9, and dispersed yellow 54 were purchased from Bailingwei technologies, inc. of Beijing. The remaining materials, reagents or equipment may be obtained from conventional commercial sources or may be obtained by known methods, unless otherwise specified.
Example 1
The embodiment provides a low-temperature direct injection disperse dye color paste which comprises the following components in parts by weight: 21.6 parts of a polyurethane dispersant, 3 parts of glycerol, 1 part of 1, 3-propanediol, 0.2 part of Surfynol 465 (surfactant), 0.1 part of Proxel GXL (bactericide), 10 parts of disperse blue 14, 6.4 parts of disperse red 9, 1.6 parts of disperse yellow 54 and 56.1 parts of water.
A preparation method of low-temperature direct injection disperse dye color paste comprises the following steps:
(1) Preparation of polyurethane dispersant:
uniformly mixing 150g of polycarbonate diol UH-50 and 160g of diethylene glycol monobutyl ether to obtain a premix liquid A; 65g of 2, 2-dimethylolpropionic acid and 80g of diethylene glycol monobutyl ether are mixed uniformly to obtain a premix B; uniformly mixing 0.1g of zinc isooctanoate and 159.9g of tetramethyl-m-xylylene diisocyanate to obtain a premixed solution C; 25g of potassium hydroxide was dissolved in 830g of deionized water to obtain a polyurethane dispersant.
Introducing nitrogen into a reaction bottle provided with a condensing reflux device, adding the premixed liquid A, and heating to 80 ℃; and slowly dripping the premix B into the premix A for 45min. After mixing evenly, the premix C is slowly added into a reaction bottle, the dripping time is 100min, and the reaction temperature is kept at 90 ℃. Until the mass concentration of the isocyanate group (% NCO) is lower than 1.2%, the temperature is reduced to 60 ℃. Then 30g of diethanolamine is slowly added into the reaction bottle, the addition is finished for 5min, and the mixture is stirred for 1h at the temperature of 60 ℃ and the rotating speed of 400 r/min. And finally, adding the premixed solution D into a reaction bottle for 10min, simultaneously increasing the stirring speed to 1500r/min, stirring and reacting for 1h at 60 ℃, cooling the reaction temperature to room temperature, and filtering by using 1.0 mu m glass fiber and 1.0 mu m PVDF membrane to obtain the polyurethane dispersant. The weight-average molecular weight (Mw) of the polyurethane dispersant was 23423, and the viscosity of the polyurethane dispersant was 38.6mP · s (@ 25 ℃ C.).
(2) Preparing low-temperature direct-injection disperse dye color paste:
mixing the raw material components to obtain a color paste dispersion liquid, injecting the color paste dispersion liquid into a ceramic sand mill for grinding, wherein zirconium beads are used as abrasive particles in the grinding, the particle size of the grinding particles is 0.1 mu m, the grinding time is 1-8h, the D50 of the ground color paste is controlled to be 80-120nm, the D99 particle size is controlled to be 200-300nm, discharging and filtering are carried out after the standard is met, and the low-temperature direct injection dispersion color paste is obtained.
Examples 2 to 4
Examples 2-4 each provide a low temperature direct-injection disperse dye paste having the specific composition shown in table 1. The preparation method is the same as example 1.
Comparative examples 1 to 4
Comparative examples 1 to 4 each provide a disperse dye paste having the specific composition shown in table 1. The preparation method is the same as example 1.
TABLE 1
As can be seen from Table 1, the viscosity of the mill base prepared by using the polyurethane dispersant with the molecular weight of 20000-30000 is lower than that of the mill base prepared by using sodium lignosulfonate as the dispersant under the same formula ratio. The polyurethane dispersing agent provided by the invention is beneficial to dispersing low-temperature disperse dyes, can reduce the viscosity of color paste, and can add more humectant to the color paste prepared by using the color paste as the dispersing agent than sodium lignosulfonate under the condition of keeping the same ink viscosity, thereby improving the moisture retention performance and the fluency of ink.
Comparative examples 5 to 12
Comparative examples 5 to 12 each provide a disperse dye paste having the specific composition shown in table 2.
The preparation method of the polyurethane dispersant with the molecular weight of more than 30000 comprises the following steps:
uniformly mixing 150g of polycarbonate diol UH-50 and 160g of diethylene glycol monobutyl ether to obtain a premix A; 42g of 2, 2-dimethylolpropionic acid and 80g of diethylene glycol monobutyl ether are uniformly mixed to obtain a premixed solution B; uniformly mixing 0.1g of zinc isooctanoate and 159.9g of tetramethyl-m-xylylene diisocyanate to obtain a premixed solution C; 25g of potassium hydroxide was dissolved in 830g of deionized water to obtain.
Introducing nitrogen into a reaction bottle provided with a condensation reflux device, adding the premixed solution A, and heating to 80 ℃; and slowly dripping the premix B into the premix A for 45min. After mixing evenly, the premix C is slowly added into a reaction bottle, the dripping time is 100min, and the reaction temperature is kept at 90 ℃. Until the mass concentration of the isocyanate group (% NCO) is lower than 1.2%, and the temperature is reduced to 60 ℃. Then 30g of diethanolamine is slowly added into the reaction bottle, the addition is finished for 5min, and the mixture is stirred for 1h at the temperature of 60 ℃ and the rotating speed of 400 r/min. And finally, adding the premixed solution D into a reaction bottle for 10min, simultaneously increasing the stirring speed to 1500r/min, stirring and reacting for 1h at 60 ℃, cooling the reaction temperature to room temperature, and filtering by using 1.0 mu m glass fiber and 1.0 mu m PVDF membrane to obtain the polyurethane dispersant. The weight average molecular weight (Mw) of the polyurethane dispersant was 45348 (greater than 30000), and the viscosity of the polyurethane dispersant was 136.5mP · s (@ 25 ℃ C.).
The preparation method of the polyurethane dispersant with the molecular weight of less than 20000 comprises the following steps:
uniformly mixing 150g of polycarbonate diol UH-50 and 160g of diethylene glycol monobutyl ether to obtain a premix A; 92g of 2, 2-dimethylolpropionic acid and 80g of diethylene glycol monobutyl ether are uniformly mixed to obtain a premix B; uniformly mixing 0.1g of zinc isooctanoate and 159.9g of tetramethyl-m-xylylene diisocyanate to obtain a premixed solution C; 25g of potassium hydroxide was dissolved in 830g of deionized water to obtain.
Introducing nitrogen into a reaction bottle provided with a condensing reflux device, adding the premixed liquid A, and heating to 80 ℃; and slowly dripping the premix B into the premix A for 45min. After mixing uniformly, the premixed solution C is slowly added into a reaction bottle, the dripping time is 100min, and the reaction temperature is kept at 90 ℃. Until the mass concentration of the isocyanate group (% NCO) is lower than 1.2%, the temperature is reduced to 60 ℃. And then 30g of diethanolamine is slowly added into the reaction bottle for 5min, and stirred for 1h at the temperature of 60 ℃ and the rotating speed of 400 r/min. And finally, adding the premixed solution D into a reaction bottle, wherein the adding time is 10min, simultaneously increasing the stirring speed to 1500r/min, stirring and reacting for 1h at the temperature of 60 ℃, cooling the reaction temperature to room temperature, and filtering by using 1.0-micron glass fiber and 1.0-micron PVDF membrane to obtain the polyurethane dispersant. The weight average molecular weight (Mw) of the polyurethane dispersant is 16180 (molecular weight is less than 20000), and the viscosity of the polyurethane dispersant is 27.9mP & s.
TABLE 2
As can be seen from Table 2, when the polyurethane dispersant with molecular weight of more than 30000 is used, the viscosity of the prepared color paste is higher due to the higher viscosity of the dispersant. And the polyurethane dispersant with the molecular weight less than 20000 is adopted, so that the dispersant cannot adapt to the grinding of low-temperature disperse dye, the prepared color paste has larger particle size, cannot adapt to a spray head of an ink-jet ink printer, and influences the fluency and the dry head performance.
Comparative examples 13 to 16
Comparative examples 13 to 16 each provide a disperse dye paste prepared using a toner having a molecular weight greater than 300, the specific compositions of which are shown in Table 3. The preparation method is the same as example 1.
TABLE 3
As can be seen from Table 3, the viscosity and particle size of the color pastes prepared using the disperse dyes having a molecular weight greater than 300 are substantially the same as those of examples 1-4.
Examples 5 to 8
Examples 5-8 provide ink-jet inks prepared using the low temperature direct injection disperse dye pastes of examples 1-4, the specific components of which are shown in table 4, and the specific preparation method is as follows: sequentially adding deionized water, humectant, surfactant and bactericide, stirring at 100-200rpm for 15min at normal temperature, adding color paste, stirring at 100-200rpm for 30min at normal temperature, and filtering with PP membrane with pore diameter of 0.45 μm to obtain the desired ink.
The ink-jet inks prepared in examples 5 to 8 were applied to an Epson I3200-A1 head and tested for their performance, which mainly included ink viscosity, ink printing stability, rub fastness (dry and wet rub, test methods referenced GB/T3920-2008), waterfastness (discoloration and staining, test methods referenced GB/T5713-2013), and lightfastness (test methods referenced GB/T8427-2008, method 3). The ink printing stability comprises printing fluency, namely the number of broken holes of 2h of continuous printing, and open time test (removing the nozzle from the ink stack, staying for a period of time and moving back to the ink stack, and detecting the number of the broken holes before and after removal by using a printing test strip). The test results are shown in table 4.
Comparative examples 17 to 20
Comparative examples 17-20 provide inks made using the disperse dye pastes of comparative examples 1-4, the specific components are shown in Table 4, the specific preparation methods are examples 5-8. And the inks provided in comparative examples 17 to 20 were applied to an Epson I3200-A1 head and subjected to a performance test.
TABLE 4
As can be seen from Table 4, in order to control the inks prepared in comparative examples 17 to 20 to have the same viscosity as in examples 5 to 8, the comparative examples required a reduction in the amount of humectant and an increase in the amount of water. If the same amount of humectant and water is used, the inks of comparative examples 17 to 20 will have a high viscosity and will not be suitable for direct jet printing. As can be seen from the test data, the ink-jet inks provided in examples 5 to 8 of the present invention were continuously printed for 10 hours without clogging or breaking the line; and the color fastness is obviously better than that of comparative examples 17-20.
Comparative examples 21 to 28
Comparative examples 21 to 28 provide inks prepared using the disperse dye pastes prepared in comparative examples 5 to 12, the specific components being shown in Table 5, the specific preparation methods being examples 5 to 8. The inks provided in comparative examples 21 to 28 were applied to an Epson I3200-A1 head and subjected to a performance test.
TABLE 5
As can be seen from Table 5, in order to ensure the same viscosity as in examples 5 to 8, comparative examples 21 to 24 were only added with a small amount of humectant, so that the ink was too dry to discharge ink at the time of smoothness of printing, the head was dry, and the proof printed could not be tested for color fastness; if the humectant and water were used in the same amounts, the inks of comparative examples 21 to 24 would have a high viscosity and would not be suitable for direct jet printing. While comparative examples 25 to 28, although maintaining the same viscosity as examples 5 to 8, had too large a particle size, broken both in the fluency of printing and in the open time test, and much inferior in the color fastness to examples 5 to 8.
Comparative examples 29 to 32
Comparative examples 29 to 32 provide inks prepared using the disperse dye pastes prepared in comparative examples 13 to 16, the specific compositions of which are shown in Table 6, and the specific preparation methods of which are examples 5 to 8. The inks provided in comparative examples 29 to 32 were applied to an Epson I3200-A1 head and subjected to a performance test.
TABLE 6
As can be seen from Table 6, the inks prepared in comparative examples 29 to 32 also had better printing stability and color fastness.
The inks prepared in examples 5 to 8 and comparative examples 29 to 32 were further tested for permeability,
the Lab values on the front and back sides, and the color difference on the front and back sides, of 100% pure color patches printed with the inks of examples 5-8 and 100% pure color patches printed with the inks of comparative examples 29-32, respectively, were tested. Lab is a device independent color system, also based on physiological characteristics of color system. This means that it describes the human visual perception digitally. The L component in the Lab color space is used for expressing the brightness of the pixel, the value range is [0, 100], the L component expresses from pure black to pure white, the same a and b values for colors, and the larger the L component is, the more vivid the L component is; a represents the range from red to green, and the value range is [127, -128]; b represents the range from yellow to blue, and the value range is [127, -128]. The test results are shown in table 7.
TABLE 7
As can be seen from Table 7, the difference Δ E between the front and back sides of the swatches printed with the ink-jet inks provided in examples 5-8 of the present invention was less than 0.75, and both the front and back sides were bright and full in color. The ink provided in comparative examples 29 to 32 printed swatches had very light reverse color and very large color difference from the front and back.
In conclusion, the ink-jet ink provided by the embodiment of the invention has the advantages of strong printing stability, high color fastness and excellent permeability, and is obviously superior to each proportion.
Claims (10)
1. The low-temperature direct-injection disperse dye color paste is characterized by comprising a low-temperature disperse dye, a polyurethane dispersant, a humectant, a surfactant and water; the molecular weight of the low-temperature disperse dye is less than 300; the weight average molecular weight of the polyurethane dispersant is 20000-30000.
2. The low-temperature direct injection disperse dye color paste according to claim 1, which comprises, by weight, 10-30 parts of the low-temperature disperse dye, 10-30 parts of the polyurethane dispersant, 1-20 parts of the humectant, 0.1-3 parts of the surfactant and 30-70 parts of water.
3. The low-temperature direct injection disperse dye color paste according to claim 2, which comprises, by weight, 10-25 parts of low-temperature disperse dye, 15-30 parts of polyurethane dispersant, 3-15 parts of humectant, 0.1-0.5 part of surfactant and 30-60 parts of water.
4. The low temperature direct injection disperse dye paste according to any one of claims 1-3, wherein the low temperature disperse dye is at least one selected from disperse blue 14, disperse red 9 and disperse yellow 54.
5. The direct injection disperse dye paste at low temperature according to any one of claims 1-3, wherein the molecular weight of the disperse dye at low temperature is 200-300.
6. The preparation method of the low-temperature direct injection disperse dye color paste as claimed in any one of claims 1 to 5, which is characterized by comprising the following steps:
and mixing the low-temperature disperse dye, the polyurethane dispersant, the humectant, the surfactant and water to obtain the low-temperature direct-injection disperse dye color paste.
7. The preparation method according to claim 6, wherein the raw material components for preparing the polyurethane dispersant comprise: polyester glycol, diisocyanate monomer, emulsifier, solvent, catalyst and blocking agent.
8. The preparation method according to claim 7, wherein the raw material components for preparing the polyurethane dispersant comprise: 18-32 parts of polyester glycol, 20-35 parts of diisocyanate monomers, 10 parts of emulsifying agents, 30-55 parts of solvents, 0.001-2 parts of catalysts and 0.1-10 parts of blocking agents.
9. Use of the low temperature direct injection disperse dye paste according to any one of claims 1 to 5 in an ink jet ink.
10. An inkjet ink comprising the low-temperature direct-injection disperse dye paste according to any one of claims 1 to 5; the ink jet ink has a viscosity of 3.0 to 4.0mP s at 25 ℃.
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