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Super-molecule intercalation structure anti-photoaging material and preparation method thereof

A supramolecular intercalation and anti-photoaging technology, which is applied in the field of supramolecular intercalation structure anti-photoaging materials and its preparation, can solve the problems of poor anti-photoaging effect, achieve excellent photoprotection performance, facilitate industrial production, The effect of rich sources of raw materials

Active Publication Date: 2018-01-19
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, organic weak reducing agent and free radical scavenger between the LDHs layers, the anti-photoaging performance of LDHs with the co-intercalation structure of UV absorber, organic weak reducing agent and free radical scavenger is obviously better. Based on the UV absorber single intercalation structure LDHs, it overcomes the shortcomings of the current UV absorber single intercalation LDHs with poor anti-light aging effect

Method used

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  • Super-molecule intercalation structure anti-photoaging material and preparation method thereof
  • Super-molecule intercalation structure anti-photoaging material and preparation method thereof
  • Super-molecule intercalation structure anti-photoaging material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 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.

[0038] Step B: Weigh 0.6g NaOH and dissolve in 30ml deionized water with carbon dioxide removed to form an alkaline solution; weigh 0.495g (1.5mmol) 2-hydroxy-4-methoxybenzophenone-5-sodium sulfonate, 0.6498g (1.5mmol) of potassium sorbate and 0.3555g (1.5mmol) of 2,2,6,6-tetramethylpiperidine-4-oxylpropionate were dissolved in 40ml of deionized water and ethylene glycol in addition to carbon dioxide Composed of mixed solvents, added to the alkali solution to form a mixed solution.

[0039] 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 0.0495g respectively (0.15 mmol) 2-hydroxy-4-methoxybenz...

Embodiment 2

[0041] 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.

[0042] Step B: Dissolve 0.8g of NaOH in 45ml of deionized water with carbon dioxide removed to form an alkaline solution. Weigh 0.24g (1.5mmol) sodium salicylate, 0.2982g (1.5mmol) sodium ascorbate and 0.3555g (1.5mmol) 1,2,2,6,6-pentamethylpiperidine-4-oxyl sodium acetate Soluble in deionized water with carbon dioxide removed, add to alkaline solution to form a mixed solution.

[0043] 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 0.024g respectively (0.15mmol) sodium salicylate, 0.0298g (0.15mmol) sodium ascorbate and 0.0356g (0.15mmol) sodium 1,2,2,6,6-pentamethylpiperidine-4-oxyacetate were added...

Embodiment 3

[0045] 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.

[0046] Step B: take 1g NaOH and dissolve in 25ml deionized water except carbon dioxide to form an alkaline solution; weigh 0.4774g (3mmol) sodium p-aminobenzoate, 0.6498g (1.5mmol) potassium sorbate and 0.3525g (1.5mmol) 2 , Sodium 2,6,6-tetramethylpiperidine-4-aminopropionate is dissolved in a mixed solvent of deionized water except carbon dioxide and ethylene glycol, and added to the alkali solution to form a mixed solution.

[0047] 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 0.0239g respectively (0.15 mmol) sodium p-aminobenzoate, 0.065 g (0.15 mmol) potassium sorbate and 0.0353 g (0.15 ...

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Abstract

The invention provides a super-molecule intercalation structure anti-photoaging material and a preparation method thereof. According to the present invention, an ultraviolet absorber, an organic weakreducer and a free radical capture agent are innovatively co-assembled into the interlayer of hydrotalcite, wherein the photodegradation on the plastic by ultraviolet rays is blocked by the ultraviolet absorption property of the ultraviolet absorber, the high reactive oxygen is absorbed by the reduction effect of the organic weak reducer so as to reduce the photooxidation on the plastic, and the free radical capture agent captures the active free radical produced by the photodegradation so as to reduce the photoaging of the plastic; due to the synergetic anti-photoaging effect of the ultraviolet absorber, the organic weak reducer and the free radical capture agent in the interlayer of LDHs, the anti-photoaging performance of the co-intercalation structure LDHs is significantly superior tothe anti-photoaging performance of the ultraviolet absorber single-intercalation structure LDHs, and the disadvantage of poor anti-photoaging effect of the existing ultraviolet absorber single-intercalation structure LDHs is overcome; and the prepared anti-photoaging material of the present invention has advantages of high heat resistance, good migration resistance, excellent light protection performance and the like, and can be widely used in the fields of plastics, coating materials, and the like.

Description

[0001] Field [0002] The invention relates to a supramolecular intercalation structure anti-light aging material and a preparation method thereof. Background technique [0003] Ultraviolet absorbers 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 goal of photoprotection by absorbing and transferring ultraviolet light energy or shielding ultraviolet light. UV absorbers are generally compounded with plastics by physical mixing. The UV absorbers are highly dispersed in the plastic matrix to give full play to the protective effect of UV absorbers, reduce the photooxidative degradation of plastics, and prolong the service life of plastics. However, most UV absorbers have disadvantages such as easy volatilization, easy migration, and poor thermal stability, which limit their application range. [0004] Hydrotalcite (Layered Double Hydroxides, abbreviated as LDHs) is a compound ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/06C08K9/04C08K3/26C08K5/42C08K5/098C08K5/3435C08K5/18C08L23/12
Inventor 唐平贵李殿卿冯拥军马若愚赵梦垚陈廷伟
Owner BEIJING UNIV OF CHEM TECH
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