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Preparation method of fluorescence polyurethane resin

A polyurethane resin and fluorescence technology, which is applied in the field of preparation of fluorescent polyurethane resin, can solve the problems of unfavorable manufacture of anti-counterfeiting ink, easy to be imitated, no fluorescent effect, etc., and achieve the effect of not easy to imitate, low cost and simple process

Inactive Publication Date: 2013-05-15
张家港威迪森化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the red light inks on the market use magenta pigments, because they have no fluorescent effect, which is not conducive to the manufacture of anti-counterfeiting inks, and most of the fluorescent inks are mostly traditional blue and purple fluorescent colors, which are easy to be imitated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) Add 1mol of europium trioxide into the reaction kettle, then add concentrated hydrochloric acid, heat and stir until the solid is completely dissolved, remove the liquid under reduced pressure, cool the residual solid to 20~25°C, add absolute ethanol to prepare europium chloride weak;

[0015] Add 4.3 mol of p-aminobenzoic acid into the reaction kettle, add n-butanol and stir until it is completely dissolved, add the ethanol solution of europium chloride, and the absolute ethanol solution of sodium ethoxide to adjust its pH=4.5~5.0, 20~ Stir and react at 25°C for 0.5~1.0h, then add 2.5mol of oleic acid n-butanol solution dropwise, then adjust pH=7.0~7.5 with sodium ethoxide absolute ethanol solution, stir and react at 20~25°C for 1.0~1.5h, filter , washing with absolute ethanol, drying, and pulverizing to obtain europium-p-aminobenzoic acid-oleic acid ternary complex powder;

[0016] 2) Under the protection of nitrogen, add 2.2mol of polytetrahydrofuran ether diol (...

Embodiment 2

[0019] 1) Add 1mol of europium trioxide into the reaction kettle, then add concentrated hydrochloric acid, heat and stir until the solid is completely dissolved, remove the liquid under reduced pressure, cool the residual solid to 20~25°C, add absolute ethanol to prepare europium chloride weak;

[0020] Add 5mol of p-aminobenzoic acid into the reaction kettle, add n-butanol and stir until it is completely dissolved, add the ethanol solution of europium chloride, and the absolute ethanol solution of sodium ethoxide to adjust its pH=5.0, stir at 20~25°C After reacting for 1.0h, add 3 mol of oleic acid n-butanol solution dropwise, adjust pH=7.5 with sodium ethoxide absolute ethanol solution, stir and react for 1.5h at 20~25°C, filter, wash with absolute ethanol, dry and pulverize to obtain Europium-p-aminobenzoic acid-oleic acid ternary complex powder;

[0021] 2) Under the protection of nitrogen, add 2.3mol of polyadipate-1,4-butylene glycol ester diol (number average: 2.0×10 ...

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PUM

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Abstract

The invention discloses a preparation method of fluorescence polyurethane resin. The preparation method comprises the steps of: 1) preparing europium-para aminobenzoic acid-oleic acid ternary complex powder; 2) preparing polyurethane resin; and 3) mixing the europium-para aminobenzoic acid-oleic acid ternary complex powder with the polyurethane resin to obtain the fluorescence polyurethane resin. The fluorescence polyurethane resin disclosed by the process is high in fluorescence intensity, good in anti-counterfeiting effect, not easy to be counterfeited, simple in cooling process, low in cost and easy to achieve industrialization when being applied to anti-forgery ink.

Description

technical field [0001] The present invention relates to a kind of resin, more specifically a kind of preparation method of fluorescent polyurethane resin. Background technique [0002] At present, most of the red light inks on the market use magenta pigments, because they have no fluorescent effect, which is not conducive to the manufacture of anti-counterfeiting inks, and most of the fluorescent inks are mostly traditional blue and purple fluorescent colors, which are easy to be imitated. Red fluorescent inks are gradually being paid attention to by people because of their unique properties. Europium ternary fluorescent complexes have good red fluorescent effects. Applying them to ink resins can prepare anti-counterfeiting inks with good market prospects. Contents of the invention [0003] The technical problem to be solved by the present invention is: a preparation method of fluorescent polyurethane resin. [0004] In order to solve the above-mentioned technical problem...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L75/06C09K11/06C08K5/00C08G18/66C08G18/48C08G18/42C08G18/10C09D11/10C09D11/102
Inventor 何勇钱建平
Owner 张家港威迪森化学有限公司
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