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Photothermic stabilization type acidic intermedium dark yellow GG intercalation pigment and preparation method thereof

A stable and acidic technology, applied in the direction of organic dyes, etc., can solve the problems of complex preparation methods, and achieve the effects of simple preparation methods and slowing down the degree and speed of fading.

Inactive Publication Date: 2009-12-16
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its disadvantage is that the preparation method of the precursor is complex

Method used

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  • Photothermic stabilization type acidic intermedium dark yellow GG intercalation pigment and preparation method thereof
  • Photothermic stabilization type acidic intermedium dark yellow GG intercalation pigment and preparation method thereof
  • Photothermic stabilization type acidic intermedium dark yellow GG intercalation pigment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step A: Weigh 28.80g (0.72mol) NaOH and add 300ml to remove CO 2 Alkaline solution was prepared in deionized water; another 71.39g (0.24mol) Zn(NO 3 ) 2 ·6H 2 O and 45.02g (0.12mol) Al(NO 3 ) 3 9H 2 O dissolved in 300ml to remove CO 2 mixed salt solution in deionized water. The two solutions were simultaneously added to the rotating liquid film reactor at the same flow rate for rapid nucleation, and then crystallized at reflux temperature for 6 hours, centrifugally filtered, and washed with water until the pH value was less than 8 to obtain ZnAl-NO 3 -LDHs filter cake, weigh 2.30g (0.005mol) ZnAl-NO 3 -LDHs filter cake, fully dispersed in 50ml ethylene glycol to make a slurry.

[0028] Step B: Dissolve HSAB in deionized water, and add dilute nitric acid solution dropwise until no precipitation occurs. The precipitate is separated, washed, and dried to obtain the acidic medium dark yellow GG acid, and the acidic medium deep yellow GG acid is dissolved in 100ml o...

Embodiment 2

[0032] Step A: Weigh the ZnAl-NO prepared in Example 1 3 - LDHs filter cake 2.30g (0.005mol), fully dispersed in 50ml ethylene glycol to make a slurry.

[0033] Step B: Same as Example 1.

[0034] Step C: Fully mix the acidic medium deep yellow GG solution prepared in step B with the hydrotalcite suspension prepared in step A, adjust to pH = 9 with 0.1M NaOH solution, react at 90°C for 16 hours under nitrogen protection, and filter 1. Wash until the lotion is colorless, and dry at 100°C for 24 hours to obtain hydrotalcite LDHs-HSAB intercalated with deep yellow GG anion in acidic medium. Elemental analysis results show that its chemical structure is Zn 0.66 al 0.34 (OH) 2 (HSAB) 0.17 0.52H 2 O, the photothermal stability test shows that the photothermal stability of the intercalated pigment is higher than that of the acid medium deep yellow GG.

Embodiment 3

[0036] Step A: Same as Example 2.

[0037] Step B: Same as Example 1, except that the molar ratio of the acid medium, deep yellow GG acid, to the hydrotalcite precursor is 1.5.

[0038] Step C: Fully mix the acidic medium deep yellow GG solution prepared in step B with the hydrotalcite suspension prepared in step A, adjust to pH = 10 with 0.1M NaOH solution, react at 95°C for 12 hours under nitrogen protection, and filter , Wash until the lotion is colorless, and dry at 100°C for 24 hours to obtain hydrotalcite LDHs-HSAB intercalated with deep yellow GG anion in acidic medium. Elemental analysis results show that its chemical structure is Zn 0.67 al 0.33 (OH) 2 (HSAB) 0.165 0.49H 2 O, the photothermal stability test shows that the photothermal stability of the intercalated pigment is higher than that of the acid medium deep yellow GG.

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Abstract

The invention provides a light-heat stable acid medium deep yellow GG supramolecular structure intercalation pigment and a preparation method thereof. The present invention utilizes the intercalability of hydrotalcite, uses the hydrotalcite [M2+1-xM3+x(OH)2](NO3-)x·mH2O with the interlayer anion as NO3-, and uses the ion exchange method to make the acidic medium deep The anion of yellow GG (abbreviated as HSAB) is intercalated into the interlayer of hydrotalcite to obtain intercalated hydrotalcite LDHs-HSAB. Compared with the acid medium deep yellow GG, LDHs-HSAB has greatly improved light resistance and heat resistance. Therefore, using LDHs-HSAB instead of acidic medium deep yellow GG in polymer composites can slow down the degree and speed of fading caused by light during use.

Description

[0001] Field [0002] The invention relates to a light-heat stable acid medium dark yellow GG intercalation pigment and a preparation method thereof. Background technique [0003] Acid medium deep yellow GG (2-hydroxy-5-(4-sulfophenyl azo)-benzoate disodium, abbreviated as HSAB) is a deep yellow dye widely used in textile dyeing and polymer material coloring and other fields. Although HSAB has good color rendering and light stability, its thermal stability is poor, and it is easy to fade during the processing and use of composite materials, thus limiting its application range and reducing its application performance. Therefore, it is of great significance to improve the light resistance and heat resistance of acid medium deep yellow GG. [0004] Hydrotalcite (Layered Double Hydroxides, abbreviated as LDHs) is an anionic layered material. Due to its intercalation and assembly properties, some functional species can be inserted into the hydrotalcite layer by using this property...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/24C09B67/02
Inventor 李殿卿林彦军唐平贵
Owner BEIJING UNIV OF CHEM TECH
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