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Supramolecular intercalated structure polymer antioxidant

A molecular structure and polymer technology, applied in the field of layered composite metal hydroxides, can solve the problems of easy migration, anti-thermal and oxygen aging effects, excessive LDH, high ash content, etc., to solve the problem of easy migration to the surface, preparation method Simple, enhanced thermal stability performance

Active Publication Date: 2014-05-07
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But join CO 3 -Too much LDH produces a lot of ash
[0008] Based on the excellent antioxidant performance of hindered phenolic compounds and the adjustable denaturation of structure and function of LDH layered compounds, the present invention intercalates hindered phenolic carboxylic acid anions into LDH to obtain a supramolecular structure polymer antioxidant , to solve the problems of traditional antioxidants being easy to move out and poor thermal and oxidative aging effects

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0040] Embodiment 1: Co-precipitation method prepares supramolecular structure polymer antioxidant

[0041] Step A: take by weighing 2.3076g (10mmol) Mg (NO 3 ) 2 ·6H 2 O, 1.688g (5mmol) Al(NO 3 ) 3 9H 2 O, dissolved in 60mL to remove CO 2 mixed salt solution in deionized water.

[0042] Step B: Weigh 1.44g NaOH and dissolve in 180mL to remove CO 2 Alkaline solution in deionized water.

[0043] Step C: Weigh 2.502g of β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid and add to 100mL to remove CO 2 of deionized water.

[0044] Step D: Add the solution prepared in step C to the solution prepared in step A, add the solution prepared in step B dropwise to the mixed solution of A and C under nitrogen protection and stirring, and complete the dropwise addition within 30 minutes. Control the pH = 9. Then react at room temperature and under the protection of nitrogen for 24 hours, after 6 cycles of filtration and washing, the pH value of the mother liquor is finally neut...

Embodiment 2

[0045] Embodiment 2: Ion exchange method prepares supramolecular structure polymer antioxidant

[0046] Step A: Weigh 1.233g LDH-NO 3 Dissolve in 60mL to remove CO 2 of deionized water.

[0047] Step B: Weigh 1.44g NaOH and dissolve in 180mL to remove CO 2 Alkaline solution in deionized water.

[0048] Step C: Weigh 2.12g of β-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionic acid and add to 100mL to remove CO 2 of deionized water.

[0049] Step D: Add the solution prepared in step B to the solution prepared in step C until dissolved.

[0050] Step E: Add the solution prepared in step D dropwise to solution A under nitrogen protection and stirring, complete the dropwise addition within 30 minutes, control pH = 9, then react at room temperature and nitrogen protection for 24 hours, and filter and wash 6 times Treat until the pH value of the mother liquor is neutral, and vacuum-dry the filter cake for 24 hours to obtain a white supramolecular structure polymer antioxidant p...

Embodiment 3

[0051] Embodiment 3: Preparation of supramolecular structure polymer antioxidant by roasting recovery method

[0052] Step A: Weigh 0.273g LDO and dissolve in 30mL to remove CO 2 of deionized water.

[0053] Step B: Weigh 0.28g NaOH and dissolve in 7mL to remove CO 2 Alkaline solution in deionized water.

[0054] Step C: Weigh 2.502g of 3,5-di-tert-butyl-4-hydroxybenzoic acid and add 50mL to remove CO 2 of deionized water.

[0055] Step D: Add the solution prepared in step B to the solution prepared in step C until dissolved.

[0056] Step E: Add the solution prepared in step D dropwise to solution A under nitrogen protection and stirring, complete the dropwise addition within 30 minutes, control pH = 10, then react at room temperature and nitrogen protection for 24 hours, and filter and wash 6 times Treat until the pH value of the mother liquor is neutral, and vacuum-dry the filter cake for 24 hours to obtain a white supramolecular structure polymer antioxidant powder AO...

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Abstract

The invention provides a supramolecular intercalated structure polymer antioxidant. The chemical general formula of the supramolecular intercalated structure polymer antioxidant is M<2+>1-xM<3+>x(OH)2(AOn-)x / n.mH2O, wherein x is larger than or equal to 0.1 and smaller than or equal to 0.5; m is the number of interlayer crystallization water molecules; and M<2+> is divalent metal ion, M<3+> is trivalent metal ion and AOn- represents hindered phenol carboxylic acid anion and is carboxylic acid comprising hindered phenol group or sodium salt thereof. According to the supramolecular intercalated structure polymer antioxidant, the active component of the antioxidant is inserted into a hydrotalcite layer by a supramolecular intercalated method, so that the problems that the traditional antioxidant is easy to migrate to the surface and is in failure quickly are solved and the heat stability of the antioxidant is further enhanced. The preparation method is simple and contributes to industrialized production.

Description

[0001] Field [0002] The invention relates to a supramolecular intercalation structure polymer antioxidant, in particular to a layered composite metal hydroxide containing hindered phenolic carboxylic acid anions. Background technique [0003] Polymers have good physical and mechanical properties, chemical properties and processing properties, and have been widely used in the fields of construction engineering materials, packaging materials, water supply pipes, and materials for vehicles and household appliances. Due to the molecular structure, formulation and components of the polymer material itself, as well as its environment and use conditions, polymer materials, especially polyolefin plastics and diene rubber, are extremely susceptible to heat, Aging degradation occurs due to the influence of external factors such as oxygen and ultraviolet rays, which eventually leads to yellowing, tarnishing, surface cracking, and a significant decline in mechanical properties of the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K3/22C08K5/13C01B13/14
Inventor 冯拥军姜瑜李殿卿唐平贵黄强陈商涛张凤波黄晶怡
Owner BEIJING UNIV OF CHEM TECH
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