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Supramolecular intercalated structure light stabilizer and preparation method thereof

A technology of supramolecular intercalation and structured light, which is applied in the field of supramolecular intercalation structural light stabilizer and its preparation, can solve the problems of poor anti-light aging effect and achieve the purpose of overcoming poor anti-light aging effect and migration resistance Good, rich source of raw materials

Active Publication Date: 2018-01-26
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the synergistic anti-photoaging effect of the UV absorber and the free radical scavenger between the LDHs layers, the anti-photoaging performance of the LDHs with the co-intercalation structure of the UV absorber and the free radical scavenger is obviously better than that of the single-intercalation LDHs of the UV absorber, which overcomes the The shortcomings of the current UV absorber single-intercalation LDHs in the anti-light aging effect are not good

Method used

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  • Supramolecular intercalated structure light stabilizer and preparation method thereof
  • Supramolecular intercalated structure light stabilizer and preparation method thereof
  • Supramolecular intercalated structure light stabilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Step A: Weigh 1.5g (5.0mmol) Mg(NO 3 ) 2 ·6H 2 O, 0.938g (2.5mmol) Al(NO 3 ) 3 9H 2 O, dissolved in 30ml to remove CO 2 salt solution in deionized water.

[0037] Step B: Dissolve 0.6g NaOH in 30ml of deionized water decarbonized to form an alkaline solution; weigh 0.5925g (2.5mmol) 2,2,6,6-tetramethylpiperidine-4-oxypropionic acid Dissolve sodium and 0.825g (2.5mmol) 2-hydroxy-4-methoxybenzophenone-5-sodium sulfonate in a mixed solvent composed of 40ml deionized water and ethylene glycol in addition to carbon dioxide, and add to the alkaline solution form a mixed solution.

[0038] Step C: Under nitrogen protection and stirring, mix and react the solutions prepared in steps A and B to form a precipitate, centrifuge and wash the formed precipitate 3 times, then add 120ml of deionized water to remove carbon dioxide to prepare a slurry, and weigh 0.0593g respectively (0.25 mmol) sodium 2,2,6,6-tetramethylpiperidine-4-oxypropionate and 0.0825 g (0.25 mmol) 2-hydrox...

Embodiment 2

[0040] Step A: Weigh 2.25g (7.5mmol) Mg(NO 3 ) 2 ·6H 2 O, 0.938g (2.5mmol) Al(NO 3 ) 3 9H 2 O, dissolved in 40ml to remove CO 2 salt solution in deionized water.

[0041] Step B: Dissolve 0.8g of NaOH in 45ml of deionized water decarbonized to form an alkaline solution; weigh 0.5925 g (2.5mmol) of 1,2,2,6,6-pentamethylpiperidine-4-oxyl Sodium acetate and 0.8 g (5 mmol) of sodium salicylate were dissolved in deionized water decarbonized and added to the alkaline solution to form a mixed solution.

[0042] Step C: Under nitrogen protection and stirring, mix and react the solutions prepared in steps A and B to form a precipitate, centrifuge and wash the formed precipitate 3 times, then add 120ml of deionized water to remove carbon dioxide to prepare a slurry, and weigh 0.0593g respectively (0.25 mmol) sodium 1,2,2,6,6-pentamethylpiperidine-4-oxyacetate and 0.04 g (0.25 mmol) sodium salicylate were added to the slurry, and then the precipitate was placed in a 95 °C water ba...

Embodiment 3

[0044] Step A: Weigh 3g (10.0mmol) Mg(NO 3 ) 2 ·6H 2 O, 0.938g (2.5mmol) Al(NO 3 ) 3 9H 2 O, dissolved in 45ml to remove CO 2 salt solution in deionized water.

[0045] Step B: Dissolve 1 g of NaOH in 25 ml of deionized water with carbon dioxide removed to form an alkaline solution. Weigh 1.175g (5mmol) sodium 2,2,6,6-tetramethylpiperidine-4-aminopropionate and 0.3978g (2.5mmol) sodium p-aminobenzoate and dissolve them in deionized water and ethylene glycol Alcohol mixed solvent, added to the alkali solution to form a mixed solution.

[0046] Step C: Under nitrogen protection and stirring, mix the solutions prepared in steps A and B to form a precipitate, centrifuge and wash the formed precipitate 3 times, then add 120ml of deionized water to remove carbon dioxide to prepare a slurry, and weigh 0.0588g respectively (0.25 mmol) sodium 2,2,6,6-tetramethylpiperidine-4-aminopropionate and 0.0398 g (0.25 mmol) sodium p-aminobenzoate were added to the slurry, and then the pr...

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Abstract

The invention provides a supramolecular intercalated structure light stabilizer and a preparation method thereof. An ultraviolet absorber and a radical scavenger are innovatively commonly assembled into LDHs interlayer, the ultraviolet absorption property of the ultraviolet absorber is used to block the photodegradation of plastics by ultraviolet rays, and the radical scavenger is sued to captureactive radicals generated by the photodegradation in order to reduce the photooxidation of the plastics. The ultraviolet absorber at the LDHs interlayer and the radical scavenger have synergistic anti-light and anti-ageing effects, and the anti-light and anti-ageing performances of ultraviolet absorber and radical scavenger co-intercalated LDHs are obviously better than those of ultraviolet absorber single-intercalated LDHs, so the disadvantage of poor anti-light and anti-ageing effects of the existing ultraviolet absorber single-intercalated LDHs is overcome. The preparation method has the advantages of simplicity, abundant sources of raw materials, and convenience in industrial production. The prepared supramolecular intercalated structure light stabilizer has the advantages of high heatresistance, good migration resistance, excellent light protection performance and the like, and can be widely applied to the fields of plastics and coatings.

Description

[0001] Field [0002] The invention relates to a supramolecular intercalation structure light stabilizer and a preparation method thereof. Background technique [0003] Light stabilizers are a class of functional additives that can inhibit the degradation of plastics induced by ultraviolet light. The principle of action is to achieve the purpose of light protection by absorbing and transferring ultraviolet light energy, shielding ultraviolet light or capturing free radicals. Light stabilizers are generally compounded with plastics by physical mixing, and are highly dispersed in the plastic matrix to give full play to the protective effect of light stabilizers, reduce the photooxidative degradation of plastics, and achieve the purpose of prolonging the service life of plastics. However, most light stabilizers have disadvantages such as easy volatilization, easy migration, and poor thermal stability, which limit their application range. [0004] Hydrotalcite (Layered Double Hyd...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K5/42C08K5/3435
Inventor 唐平贵李殿卿冯拥军陈廷伟赵梦垚马若愚
Owner BEIJING UNIV OF CHEM TECH
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