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A kind of additive-containing supramolecular intercalation structure ultraviolet absorber and preparation method thereof

A technology of ultraviolet absorber and supramolecular intercalation, which is applied in the field of additive-containing supramolecular intercalation structure ultraviolet absorber and its preparation, can solve the problems of slow degradation and limited light protection ability of PP, and achieve high heat resistance, Excellent light protection performance and easy industrial production

Active Publication Date: 2019-06-11
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the above literature has prepared a variety of supramolecular intercalation structure UV absorbers, their photoprotection ability to PP is limited, and PP will still degrade slowly during use.

Method used

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  • A kind of additive-containing supramolecular intercalation structure ultraviolet absorber and preparation method thereof
  • A kind of additive-containing supramolecular intercalation structure ultraviolet absorber and preparation method thereof
  • A kind of additive-containing supramolecular intercalation structure ultraviolet absorber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step A: Weigh 1.5g (5.0mmol) Mg(NO 3 ) 2 ·6H 2 O and 0.938g (2.5mmol) Al(NO 3 ) 3 9H 2 O dissolved in 30ml to remove CO 2 mixed salt solution in deionized water.

[0034] Weigh 1.083g (2.5mmol) potassium sorbate and 0.825g (2.5mmol) 2-hydroxyl-4-methoxybenzophenone-5-sodium sulfonate and dissolve in 40ml deionized water and ethylene glycol in addition to carbon dioxide In the mixed solvent composed, mix uniformly under nitrogen protection and stirring conditions to form a solution, which is added to the above-mentioned salt solution.

[0035] Step B: Dissolve 0.6g of NaOH in 30ml of deionized water with carbon dioxide removed to form an alkaline solution.

[0036] 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 0.1083g respectively (0.25mmol) pota...

Embodiment 2

[0041] Step A: Weigh 2.25g (7.5mmol) Mg(NO 3 ) 2 ·6H 2 O and 0.938g (2.5mmol) Al(NO 3 ) 3 9H 2 O dissolved in 40ml to remove CO 2 mixed salt solution in deionized water.

[0042] Weigh 0.497g (2.5mmol) of sodium ascorbate and 0.4g (2.5mmol) of sodium salicylate, dissolve them in deionized water with carbon dioxide removed, mix them uniformly under nitrogen protection and stirring to form a solution, and add them to the saline solution.

[0043] Step B: Dissolve 0.8g of NaOH in 45ml of deionized water with carbon dioxide removed to form an alkaline solution.

[0044] 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 0.0497g respectively (0.25mmol) sodium ascorbate and 0.04g (0.25mmol) sodium salicylate were added to the slurry, and then the precipitate was placed in a...

Embodiment 3

[0046] Step A: Weigh 3g (10.0mmol) Mg(NO 3 ) 2 ·6H 2 O and 0.938g (2.5mmol) Al(NO 3 ) 3 9H 2 O dissolved in 45ml to remove CO 2 mixed salt solution in deionized water.

[0047] Weigh 1.083g (2.5mmol) potassium sorbate and 0.3978g (2.5mmol) sodium p-aminobenzoate and dissolve them in the mixed solvent of deionized water and ethylene glycol in addition to carbon dioxide, and mix them evenly under nitrogen protection and stirring conditions to form solution, added to the salt solution.

[0048] Step B: Dissolve 1 g of NaOH in 25 ml of deionized water with carbon dioxide removed to form an alkaline solution.

[0049] 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 0.1083g respectively (0.25mmol) potassium sorbate and 0.0398g (0.25mmol) sodium p-aminobenzoate...

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Abstract

The invention provides an aid containing UV absorber with a supermolecule intercalation structure and a preparation method thereof. A UV absorber and an organic weak reducing agent are innovatively assembled to a LDHs interlayer. The UV absorbing performance of the UV absorber can block UV so as to prevent the photo degradation of plastic. Due to the reducing effect, the organic weak reducing agent can absorb active oxygen and inhibit the photo oxidation of plastic. Because of the synergetic anti-photo aging effect of the UV absorber and the organic weak reducing agent in the LDHs interlayer, the anti-photo aging performance of UV absorber and organic weak reducing agent co-intercalated LDHs is obviously better than that of a UV absorber solely intercalated LDHs. The problem of bad anti-photo aging performance of the UV absorber solely intercalated LDHs is overcome. At the same time, provided UV absorber has the advantages of high heatproof performance, good migration resistant property, and excellent light protection performance and can be widely used in the fields such as plastic, paint, and the like. The preparation method has the advantages of simple operation, abundant raw materials, and convenience for industrial production.

Description

[0001] Field [0002] The invention relates to an auxiliary-containing supramolecular intercalation structure ultraviolet absorber and a preparation method thereof. Background technique [0003] Ultraviolet absorbers are a class of functional materials 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 LDH...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08K9/02C08K3/22C08K5/42C08K5/13C08K5/18C08K5/09C08K5/1545C08L23/12
CPCC08K3/22C08K5/09C08K5/13C08K5/1545C08K5/18C08K5/42C08K9/02C08K9/04C08L2201/08C08L23/12
Inventor 唐平贵马若愚李殿卿冯拥军陈廷伟赵梦垚
Owner BEIJING UNIV OF CHEM TECH
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