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A kind of main chain benzoxazine copolymer oligomer, copolymer resin and preparation method thereof

A benzoxazine copolymer resin and benzoxazine technology are applied in the field of organic polymer materials and can solve problems such as not being able to meet requirements well

Active Publication Date: 2021-08-20
淮北绿洲新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dielectric constant k of traditional benzoxazine resins is generally 3.5, and f is generally 0.02 (1GHz), which cannot well meet the requirements of the electronic information industry for base resins.

Method used

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  • A kind of main chain benzoxazine copolymer oligomer, copolymer resin and preparation method thereof
  • A kind of main chain benzoxazine copolymer oligomer, copolymer resin and preparation method thereof
  • A kind of main chain benzoxazine copolymer oligomer, copolymer resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 5.80g (0.05mol) of 1,6-hexamethylenediamine, 5.70g (0.025mol) of bisphenol A, 4.70g (0.05mol) of phenol, and 6.00g (0.2mol) of paraformaldehyde. In a 250mL three-necked flask with stirring and a thermometer, the molar ratio of aldehyde groups, phenolic hydroxyl groups and amino functional groups is 2:1:1, and the molar ratio of phenolic hydroxyl functional groups in bisphenol A and phenol is 1:1, then add 51mL of toluene and mix well After the reaction, heat to 90°C for 48h. After the reaction, pour the reaction solution into 100mL methanol solution (concentration: 40wt%) to obtain a suspension, let it stand for 24h, remove the supernatant to obtain a precipitate, and vacuum-dry the precipitate at 50°C for 8h , and finally the powder obtained by grinding the dried product is the main chain benzoxazine copolymer oligomer.

[0037] molecular formula

[0038]

[0039] where: R 1 for R 2 for R 3 for -H.

[0040] The molecular structural formulas of 1,6-hexam...

Embodiment 2

[0045]Add 5.80g (0.05mol) of 1,6-hexamethylenediamine and 6.00g (0.2mol) of paraformaldehyde into a three-neck flask equipped with a condenser, magnetic stirring, and a thermometer, add 51mL of toluene, heat to 80°C and stir for 60min Finally, add 5.70g (0.025mol) bisphenol A, 7.50g (0.05mol) p-tert-butylphenol, the molar ratio of aldehyde group, phenolic hydroxyl group and amino functional group is 2:1:1, bisphenol A and p-tert-butylphenol The molar ratio of phenolic hydroxyl functional groups in phenol is 1:1, and then continue to react for 24h. After the reaction, pour the reaction solution into 100mL methanol solution (concentration 75wt%) to obtain a suspension, leave it for 24h, remove the supernatant to obtain a precipitate , vacuum-dried the precipitate at 60° C. for 6 hours, and finally ground the dried product to obtain a powder that is the main chain benzoxazine copolymer oligomer.

[0046] molecular formula

[0047]

[0048] where: R 1 for R 2 for R 3 fo...

Embodiment 3

[0054] Add 9.90g (0.05mol) of 4,4'-diaminodiphenylmethane and 6.00g (0.2mol) of paraformaldehyde into a three-necked flask equipped with a condenser, magnetic stirring, and a thermometer, add 51mL of toluene solvent, and heat to After stirring at 115°C for 90 minutes, add 2.75g (0.025mol) of resorcinol, and then add 5.40g (0.05mol) of p-cresol after stirring for 90 minutes. The molar ratio of aldehyde group, phenolic hydroxyl group and amino functional group is 2:1:1. The molar ratio of phenolic hydroxyl functional groups in resorcinol and p-cresol is 1:1, and then continue to react for 6 hours. After the reaction, pour the reaction solution into 100mL methanol solution (concentration 85wt%) to obtain a suspension, and let it stand for 24 hours , remove the supernatant to obtain a precipitate, dry the precipitate at 60° C. for 6 hours in vacuum, and finally grind the dried product to obtain a powder that is the main chain benzoxazine copolymer oligomer.

[0055] molecular form...

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Abstract

The invention relates to a main chain benzoxazine copolymer oligomer, a copolymer resin and a preparation method thereof. Preparation of the main chain benzoxazine copolymer oligomer: add aldehyde compounds, phenolic compounds and diamine compounds to the reaction vessel by adding one time or several times in steps, add an organic solvent to dissolve, and then React at 80-115° C. for 6-48 hours, and post-treat to obtain main chain benzoxazine copolymer oligomers. The phenolic compounds include dihydric phenolic compounds and monohydric phenolic compounds. The copolymer oligomer of the present invention has good processability, and the copolymer resin obtained by curing at elevated temperature not only retains the high cross-linking density of the pure main chain benzoxazine resin, but also has better main chain benzoxazine thermal properties and On the basis of good toughness, it also has excellent dielectric properties-it has low dielectric constant and dielectric loss at high frequencies, and can be used for high-frequency and high-speed circuit board substrates, microwave and millimeter wave communications, automotive radar, and other composite materials fields.

Description

technical field [0001] The invention relates to the technical field of organic polymer materials, in particular to a main chain benzoxazine copolymer oligomer, a copolymer resin and a preparation method thereof. Background technique [0002] Today's society has entered a highly informatized era. As information processing and transmission continue to move towards high-frequency and high-speed directions, electronic materials and electronic components are required to have high-frequency, high-speed and large-capacity storage and transmission functions. This puts forward higher requirements for the printed circuit board as the carrier of information transmission and the polymer resin which is an important part. [0003] Benzoxazines are intermediates of a type of oxygen-nitrogen-containing heterocyclic structure synthesized from phenols, amine compounds and paraformaldehyde. They undergo ring-opening polymerization under the action of heating and / or catalysts, and no small mole...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G14/06
CPCC08G14/06
Inventor 曾鸣陈江炳
Owner 淮北绿洲新材料有限责任公司
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