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Fluorescent colourant compositions, colouring process and coloured articles

A fluorescent coloring agent and composition technology, applied in chemical instruments and methods, optics, luminescent materials, etc., can solve the problems of high transparency, loss of fluorescence performance, poor light resistance of fluorescent colorants, etc., and achieve high covering performance and information resistance Highly destructive, light-resistant effects

Inactive Publication Date: 2006-08-09
DAINICHISEIKA COLOR & CHEM MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The fluorescent colorants used in these conventional methods have the disadvantage of poor light fastness
Also, the fields of application of these fluorescent colorants have various limitations because they are affected by blue fluorescence from fluorescent dyes (optical brighteners) used to make coloring materials look whiter due to their high transparency, Or bleeding under the action of solvents, or deprived of fluorescence properties by chlorinated oxidants

Method used

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  • Fluorescent colourant compositions, colouring process and coloured articles
  • Fluorescent colourant compositions, colouring process and coloured articles
  • Fluorescent colourant compositions, colouring process and coloured articles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Example 1 (water-based jet ink)

[0085] Fluorescent pigment 3 (150 parts) of Table 1, styrene-acrylic resin (styrene / butyl acrylate / methacrylic acid / 2-hydroxyethyl methacrylate 10 / 50 / 20 / 20 (weight ratio) Quaternary polymer potassium salt, polystyrene-converted weight average molecular weight by GPC: 35,000) aqueous solution (solid content: 40%; 187.5 parts), ethylene glycol (40 parts) and purified water (160 parts) sufficient Mix together to make a mill base. After fully dispersing the millbase using a horizontal disperser containing media, purified water (212.5 parts) was added to the dispersed millbase to obtain a pigment dispersion with a pigment content of 20%.

[0086] To the pigment dispersion liquid (100 parts) were added ethylene glycol (51.0 parts), glycerin (33.0 parts), polyoxyethylene oleate (1 part), surfactant (0.8 parts), the same styrene- Acrylic resin (15 parts) and purified water (197 parts). The resulting mixture was stirred and then centrifuged (...

Embodiment 2

[0091] Example 2 (oil based jet ink)

[0092] Fluorescent pigment 8 (2θ: 11°, h / w: 75; 100 parts) in Table 1 obtained in the same manner as Synthesis Example 1 was prepared in "ISOPAR TM Acrylic resin (2-ethylhexyl methacrylate / diethylaminoethyl methacrylate 70 / 30 (weight ratio) copolymer in G" (product of Exxon Chemical Company), polystyrene by GPC Converted weight average molecular weight: 25,000) aqueous solution (solid content: 40%, 75 parts) and "ISOPAR TM G" (492 parts) was thoroughly stirred and mixed together. The millbase thus prepared was then thoroughly dispersed using a horizontal disperser containing media.

[0093] To the thus obtained dispersion (100 parts) were added polyethylene glycol monolauryl ether (3 parts) and "ISOPAR" TM G" (197 parts). The resulting mixture was stirred well to prepare an ink. The ink was then filtered through a 5-μm membrane filter to obtain a fluorescent pigment ink.

[0094] The fluorescent pigment ink obtained above was loaded...

Embodiment 3

[0095] Example 3 (Hot Melt Solid Jet Ink)

[0096] Fluorescent Pigment 13 in Table 1 (2θ: 24°, h / w: 90; 5 parts), poly-12-hydroxystearic acid (polystyrene measured by GPC), obtained in the same manner as Synthesis Example 1 Converted weight average molecular weight: 5,500; 2.5 parts) and paraffin (melting point: 65°C; viscosity at 100°C: 5.6 mPa.s; 92.5 parts) were heated and stirred at 120°C. The resulting mixture was dispersed in an attritor while maintaining this temperature.

[0097] The resulting dispersion was heated, filtered, and placed in an ink jet printer. Solid printing was performed on surface-treated 50 μm PET film. The tint of the print is a vivid reddish-orange and, when exposed to UV light under invisible light, fluoresces very strongly.

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Abstract

The invention discloses a fluorescent colorant composition comprising pigment and resin. The pigment is a crystalline azo-based fluorescent pigment, which is obtained from the coupling reaction of a specific diazo compound derived from a specific aromatic amine and a specific aromatic coupling agent containing an acetoacetylamino group. As the crystal characteristics of crystalline azo-based fluorescent pigments, in the x-ray diffraction spectrum of the pigment, the height (h) of the largest peak and its half-value width (w ) ratio (h / w) may preferably be 20 or more. The invention also discloses a coloring method and a colored product using the fluorescent colorant composition.

Description

technical field [0001] The present invention relates to fluorescent colorant compositions for image / information recording, each of which contains crystalline azo-based fluorescent pigments, and which, due to their hiding properties, are immune to Influence of the fluorescence of a whitening agent or the like contained in the material colored with the fluorescent colorant composition. Background technique [0002] In methods of recording, printing or coating fluorescent recording / information on advertisements, decorations, commodity labels, banknotes, securities, certificates, cards, etc., water-soluble or solvent-soluble fluorescent dyes or fluorescent dyes formed from finely particulate resins are generally used Pigment, the fine particulate resin is colored with the fluorescent dye (see JP-A-10-007956). [0003] The fluorescent colorants used in these conventional methods have the disadvantage of poor light resistance. Furthermore, the fields of application of these fluo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00C08L33/00C08L23/00C08L67/00C08L71/00C08L75/00C08L77/00C08L63/00C08L83/00C09B67/36G03G5/09C09B67/20C09B67/48C09D11/00C09D11/322C09D11/326C09D11/38C09K11/06
CPCC09K2211/1014C09K2211/1037C09K11/06C09B29/0003C09B29/0815
Inventor 山宫士郎小礒英之嶋中博之河野寿夫冈本久男野上敦小宫山仲二南智坂井尚之
Owner DAINICHISEIKA COLOR & CHEM MFG CO LTD
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