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Preparation method of hyperbranched poly (urethane-amine) with hydroxide radical serving as end group and internal branched units provided with vinyl

A branched unit and hyperbranched polymerization technology, applied in the field of preparation of hyperbranched poly(urethane-amine), can solve problems such as single functional group structure, and achieve the effects of simple synthesis method, high yield and easy availability of synthetic raw materials

Active Publication Date: 2017-03-22
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the functional groups of the currently prepared hyperbranched polymers are basically distributed on the surface of the polymer and the functional group structure is single, so the functional modification of the polymer is usually carried out on the surface, and there is little work on the functional modification of the interior. reported, so the preparation of a bifunctional polymer has broad application prospects

Method used

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  • Preparation method of hyperbranched poly (urethane-amine) with hydroxide radical serving as end group and internal branched units provided with vinyl
  • Preparation method of hyperbranched poly (urethane-amine) with hydroxide radical serving as end group and internal branched units provided with vinyl
  • Preparation method of hyperbranched poly (urethane-amine) with hydroxide radical serving as end group and internal branched units provided with vinyl

Examples

Experimental program
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Effect test

Embodiment example 1

[0021] Add N-aminoethylpiperazine (2.96g, 22.9mmol), anhydrous methanol (11mL) into the reactor, stir and pass N 2 Remove oxygen for 20-30 minutes, and after it is fully dissolved, add allyl glycidyl ether (7.83g, 68.6mmol) strictly according to the ratio of N-aminoethylpiperazine to allyl glycidyl ether molar ratio of 1:3 mixture, in N 2 Under ambient conditions, react in an oil bath at 60°C for 10 hours, and finally become a colorless transparent liquid. The obtained solution was rotary evaporated at 30° C. to remove the solvent anhydrous methanol, and then dried in vacuum at room temperature for 2 h, and the obtained product was light yellow oily slightly viscous liquid.

Embodiment example 2

[0023] Add 2-aminomethylpiperidine (2.62g, 22.9mmol), absolute ethanol (10mL) into the reactor, stir and pass N 2 Remove oxygen for 20-30 minutes, and after it is fully dissolved, add allyl glycidyl ether (7.83g, 68.6mmol) strictly according to the ratio of N-aminoethylpiperazine to allyl glycidyl ether molar ratio of 1:3 mixture, in N 2 The reaction was carried out in an oil bath at 60°C for 10 hours, and finally a colorless transparent liquid was obtained. The obtained solution was rotary evaporated at 30°C to remove the solvent anhydrous methanol, and then dried in vacuum at room temperature for 2 hours. The obtained product was a light yellow oily slightly viscous liquid.

Embodiment example 3

[0025] Add 4-aminopiperidine (2.29g, 22.9mmol), anhydrous methanol (11mL) into the reactor, stir and pass N 2 Remove oxygen for 20-30 minutes, and after it is fully dissolved, add allyl glycidyl ether (7.83g, 68.6mmol) into the mixture strictly according to the molar ratio of 4-aminopiperidine to allyl glycidyl ether: 1:3 , at N 2 The reaction was carried out in an oil bath at 60°C for 10 hours, and finally a colorless transparent liquid was obtained. The obtained solution was rotary evaporated at 30°C to remove the solvent anhydrous methanol, and then dried in vacuum at room temperature for 2 hours. The obtained product was a light yellow oily slightly viscous liquid.

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Abstract

The invention relates to a preparation method of hyperbranched poly (urethane-amine) with hydroxide radical serving as the end group and internal branched units provided with vinyl. Firstly, two-functionality-degree vinyloxirane and three-functionality-degree amine compounds serve as raw materials, and novel B3B'3 monomers (B represents hydroxyl, and B' represents vinyl) containing three hydroxyls and three vinyls simultaneously are synthesized through the epoxy-amine open-loop reaction; and then diisocyanate compounds serving as A2 monomers and the hydroxyls in the B3B'3 monomers react, and the hyperbranched poly (urethane-amine) of a clear structure and with hydroxide radical serving as the end group and the internal branched units provided with vinyl is synthesized. Raw materials are easy to obtain, the steps are easy to implement, and the hyperbranched polymer is obtained, specifically, the structure is controllable, two functionally groups namely the hydroxyl and the vinyl are contained simultaneously, and the end group and the internal branched units can be further modified functionally.

Description

technical field [0001] The invention relates to a preparation method of a hyperbranched poly(urethane-amine) whose end group is a hydroxyl group and whose internal branch unit has a vinyl group, and belongs to the field of organic macromolecules. Background technique [0002] The hyperbranched polymer molecule has an irregular three-dimensional quasi-spherical structure, the molecular weight distribution of the hyperbranched polymer is wide, and the degree of branching is between 0 and 1. Although the structure of hyperbranched polymers is not as perfect as that of dendrimers, its physical and chemical properties are very similar to those of dendrimers, such as good solubility, smaller solution and melt viscosities, a large number of terminal functional groups and intramolecular voids Wait. In addition, hyperbranched polymers have their own advantages, such as simple synthesis process and one-step synthesis. [0003] Among them, AB n (n ≥ 1) type monomer is the main raw m...

Claims

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Application Information

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IPC IPC(8): C08G18/32C08G83/00
CPCC08G18/3848C08G83/005
Inventor 罗静刘欣欣池航张思琪于畅刘兴亮李小杰
Owner JIANGNAN UNIV
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