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Preparation method and application of ultraviolet fluorescent powdered ink

A fluorescent ink and ultraviolet technology, which is applied in the field of ultraviolet fluorescent toner and its preparation, can solve the problems of toner particle shape regularity and component uniformity, large dust hazards, wide particle size distribution, etc., and achieve green environmental protection technology and production High efficiency and uniform coating effect

Inactive Publication Date: 2015-11-25
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently reported preparation methods of related colorless ultraviolet fluorescent toners are mainly prepared by physical methods. The toner particles obtained in this way have the disadvantages of regular shape, poor component uniformity, wide particle size distribution, etc., and the energy consumption of the physical method preparation process High, more harmful dust

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]Preparation of polyester dispersion: 100 grams of polyester resin (polydimethyl terephthalate) was added to 400 grams of butanone solution, heated to 70° C. until completely dissolved, and used as bottle A. 400 g of deionized water containing 5 g of sodium dodecylbenzenesulfonate was heated to 75° C. as bottle B. Add bottle A to bottle B, process the mixed solution (15 minutes x 2 times) with a high-speed emulsifier (adjusted to 10000rpm), evaporate the methyl ethyl ketone solvent at 80°C to recover the solvent, and obtain polyester resin (polydimethyl terephthalate ) water-based dispersion (particle size ~ 190nm, solid content 20wt.%).

[0048] The preparation of ultraviolet fluorescent pigment dispersion liquid: in the 500 milliliters ball mill jars that zirconium beads are housed, add 40 grams of ultraviolet fluorescent pigments, 170 grams of deionized water containing 3 grams of sodium dodecylbenzene sulfonate, stir (500rpm) 0.5 Mix evenly within 1 hour; ball mill a...

Embodiment 2

[0052] Preparation of polyester dispersion: dissolve 100 grams of polyester resin (polybisphenol A resin) in 400 grams of isopropanol solution, add 400 grams of deionized water containing 5 grams of AKYPORLM100, and use a high-speed emulsifier (adjusted to 10000rpm) The mixed solution was processed (15 minutes x 2 times), and the isopropanol solvent was evaporated to obtain a water-based dispersion of polyester resin (polybisphenol A resin) (particle size ~ 180 nm, solid content 20 wt. %).

[0053] The preparation of ultraviolet fluorescent pigment dispersion liquid: in the 500 milliliters ball mill jars that zirconium beads are housed, add 170 grams of deionized water of 40 gram ultraviolet fluorescent pigments, 2 gram RLM100, 2 gram sodium dibutyl naphthalene sulfonate, stir (500rpm ) for 0.5 hours and mixed uniformly; ball milled at 6000rpm for 3 hours to obtain a water-based dispersion of ultraviolet fluorescent pigments (particle diameter ~ 500nm, solid content ~ 20wt.%). ...

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Abstract

The invention provides a preparation method of ultraviolet fluorescent powdered ink. The method comprises the following steps: (1) preparing a polyester dispersion; (2) preparing an ultraviolet fluorescent pigment dispersion; (3) preparing a polyester dispersion containing a charge control agent; and (4) mixing the polyester dispersion in the step (1), the ultraviolet fluorescent pigment dispersion in the step (2), a wax emulsion and the polyester dispersion containing a charge control agent in the step (3) to obtain the powdered ink grains which have a proper granular diameter and a core-shell structure. The invention further provides the powdered ink granules prepared by the method and an application thereof.

Description

technical field [0001] The invention relates to ultraviolet fluorescent toner and a preparation method thereof, belonging to the field of anti-counterfeit ultraviolet fluorescent toner. Background technique [0002] With the development of office automation, laser printing has become more and more widely used in work and life. Various tickets, trademarks and outsourcing have also replaced traditional printing methods with laser printing. The increasingly rampant counterfeit and shoddy products, the diversity of product types and the aesthetics of printed products have put forward higher requirements for printing anti-counterfeiting materials and technologies. The use of ultraviolet fluorescent toner (toner) in anti-counterfeiting printing has the advantages of simple implementation, low cost, good concealment, bright colors, and convenient inspection, so it has become a research hotspot at home and abroad. The anti-counterfeiting principle is to add a visible fluorescent (c...

Claims

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Application Information

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IPC IPC(8): C09D11/50C09D11/104C09D11/03G03G9/097
Inventor 樊新衡张立鹏续守民杨联明
Owner INST OF CHEM CHINESE ACAD OF SCI
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