Macromolecular antioxidant obtained through copolymerization of 2-allyl-6-methyl-6-tert-butylphenol and ethylenediamine and application of macromolecular antioxidant

A technology of macromolecular antioxidant and tert-butylphenol, which is applied in the field of preparation of macromolecular antioxidant and its modification of nylon 6, can solve the problem of low boiling point of small molecular antioxidant, low molecular weight of antioxidant, volatile And other problems, to achieve good anti-thermal oxygen aging performance, good effect

Inactive Publication Date: 2019-11-15
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the molecular weights of the above antioxidants are all low, and small molecular antioxidants have low boiling points, which are easy to volatilize and precipitate during processing.

Method used

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  • Macromolecular antioxidant obtained through copolymerization of 2-allyl-6-methyl-6-tert-butylphenol and ethylenediamine and application of macromolecular antioxidant
  • Macromolecular antioxidant obtained through copolymerization of 2-allyl-6-methyl-6-tert-butylphenol and ethylenediamine and application of macromolecular antioxidant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Bromination of 2-allyl-6-methyl-6-tert-butylphenol: Dissolve 5.26 g of 2-allyl-6-methyl-6-tert-butylphenol in 50 mL of CCl 4 and CH 3 In COOH; at 0°C and below, drop 3.84g of Br 2 CCl 4 Add the solution to the solution of 2-allyl-6-methyl-6-tert-butylphenol, react for 1 hour, pour the reaction system into distilled water, let it stand for 3-5 minutes, and filter while cold. Dry the filter cake in an oven at 70°C.

[0015] Polycondensate brominated 2-allyl-6-methyl-6-tert-butylphenol and ethylenediamine to obtain a binary copolymer product. The preparation method is as follows:

[0016] Heat the oil bath to 76°C, add 1.5g of brominated 2-allyl-6-methyl-6-tert-butylphenol and 3.08g of ethylenediamine solution in cyclohexanone to the beaker, and Stir for 40min; transfer the solution to a 250ml four-necked bottle equipped with a stirrer, a condenser, a thermometer, and an air guide tube, add 70ml xylene, and feed in N 2 Gas, stirred, heated to 125 ° C reaction, reactio...

Embodiment 2

[0018] 2-allyl-6-methyl-6-tert-butylphenol bromination: Dissolve 52.6 g of 2-allyl-6-methyl-6-tert-butylphenol in 50 mL of CCl 4 and CH 3 In COOH; at 0°C and below, drop 38.4g of Br 2 CCl 4 Add the solution to the solution of 2-allyl-6-methyl-6-tert-butylphenol, react for 1 hour, pour the reaction system into distilled water, let it stand for 3-5 minutes, and filter while cold. Dry the filter cake in an oven at 70°C.

[0019] Polycondensate brominated 2-allyl-6-methyl-6-tert-butylphenol and ethylenediamine to obtain a binary copolymer product. The preparation method is as follows:

[0020] Heat the oil bath to 76°C, add 15g of brominated 2-allyl-6-methyl-6-tert-butylphenol and 30.8g of ethylenediamine solution in cyclohexanone to the beaker, and at this temperature Stir for 40min; transfer the solution to a 1000ml four-necked bottle equipped with a stirrer, a condenser, a thermometer, and an air guide tube, add 700ml xylene, and feed in N 2 Gas, stirred, heated to 125 ° C...

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Abstract

The invention discloses a macromolecular antioxidant. The macromolecular antioxidant is characterized by comprising a functional group 2-allyl-6-methyl-6-tert-butylphenol. The macromolecular antioxidant is prepared through copolymerization of 2-allyl-6-methyl-6-tert-butylphenol and ethylenediamine. The polymer has good resistance to heat-oxygen aging, and can be used not only as a heat-oxygen aging-resistant modifier for PVC, ABS and other ordinary plastics but also as a heat-oxygen aging-resistant modifier for polyethylene, PA6, PPO and other engineering plastics, and the effect is good.

Description

technical field [0001] The invention relates to the preparation of a macromolecular antioxidant and its modified nylon 6, and specifically belongs to the field of synthesis of resin raw materials and pharmaceutical and pesticide intermediates. Background technique [0002] At present, the literature reports are generally compounded by two kinds of antioxidants, chain termination type and preventive type, such as: alcohol ester antioxidant 1010 (tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester) and phosphite antioxidant 168 (tris [2,4-di-tert-butylphenyl] phosphite) [23], hindered phenol 1098 (N,N'-bis -(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl)hexamethylenediamine) compounded with antioxidant 168[24], hindered phenolic antioxidant 245 and phosphite Auxiliary antioxidant 626, copper salt heat stabilizer AN compound [19], etc. However, the molecular weights of the above antioxidants are relatively low, and the small molecule antioxidants ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08L23/06C08L79/02
CPCC08G73/02C08L23/06C08L2201/08C08L79/02
Inventor 何敏刘玉飞于杰秦舒浩徐国敏张凯张道海
Owner GUIZHOU UNIV
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