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Topological polycarbonate-based supermolecule and preparation and application thereof

A polycarbonate and topological technology, applied in the direction of adhesives, etc., can solve problems such as lack of supramolecular assembly and stimuli response characteristics, adhesives without biodegradable properties, and adhesives that are difficult to reuse, etc., to achieve Achieve high value-added utilization, good biocompatibility and biodegradability, and mild preparation conditions

Active Publication Date: 2021-02-12
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Adhesives are widely used in the bonding of construction, flooring, furniture, steel, glass and other materials. The products on the traditional market mainly include rubber adhesives, acrylic adhesives, melamine formaldehyde adhesives, phenolic adhesives Adhesives, a series of adhesives such as urea formaldehyde, although these adhesives have certain advantages and applications, they also have some disadvantages: (1) Most of them are made of volatile organic compounds (such as formaldehyde) (2) Most of the adhesives are not biodegradable and will have a negative impact on the environment; (3) Most of the adhesives are difficult to recycle and "controllable" adhesion
However, commonly used carbon dioxide-based polymers have low bonding strength, do not have supramolecular assembly and stimuli-responsive properties, and cannot be used as reversible adhesives.

Method used

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  • Topological polycarbonate-based supermolecule and preparation and application thereof
  • Topological polycarbonate-based supermolecule and preparation and application thereof
  • Topological polycarbonate-based supermolecule and preparation and application thereof

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preparation example Construction

[0056] The preparation method of topological polycarbonate-based supramolecules of the present invention comprises the following steps: under the protection of protective gas, hexamethylene diisocyanate semi-blocked 2-ureido-4[1H]-pyrimidinone, topological Mix poly(carbonate-ether) polyol, catalyst and dry solvent, stir and react at 60-120°C for 5-48 hours, remove the protective gas after the reaction, filter the reaction mixture, remove the filtrate by rotary evaporation solvent, the obtained solid is the topological carbonate-based supramolecular material.

[0057] Wherein, the hexamethylene diisocyanate half-blocked 2-ureido-4[1H]-pyrimidinone has a molecular structure of the formula (III):

[0058]

[0059] R described in formula (III) 3 selected from -CH 3 , 1-ethylpentyl.

[0060] The topological poly(carbonate-ether) polyol has the following topology:

[0061]

[0062] for the nucleus, is the arm; among them,

[0063] The core can be any one of benzene ri...

Embodiment 1

[0080] Under the protection of argon, 2 mmol nuclei were Arms are m=4, n=9, R 4 Poly(carbonate-ether) tetraols selected from -H, 24 mmol hexamethylene diisocyanate half-blocked 2-ureido-4[1H]-pyrimidinone (R 2 for -CH 3 ), 0.2mmol dibutyltin dilaurate and 120mmol dry N,N-dimethylformamide were mixed, stirred and reacted at 600rpm at 120°C for 48 hours, after the reaction was completed, the reaction mixture was filtered, and the filtrate was removed by rotary evaporation The solvent in the obtained solid is the four-armed poly(carbonate-ether) supramolecule. Embodiment 1 makes the supramolecular of four-arm poly(carbonate-ether) 1 H-NMR spectrum see figure 1 .

Embodiment 2

[0082] Under the protection of argon, 2 mmol nuclei were Arms are m=20, n=10, R 4 Poly(carbonate-ether) triols selected from -H, 7 mmol hexamethylene diisocyanate half-blocked 2-ureido-4[1H]-pyrimidinone (R 3 1-ethylpentyl), 0.002mmol dibutyltin dilaurate and 10mmol dry chloroform were mixed, stirred at 500rpm at 60°C for 12 hours, after the reaction was completed, the reaction mixture was filtered, and the filtrate was removed by rotary evaporation The solvent in the obtained solid is the three-arm poly(carbonate-ether) supramolecule.

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PUM

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Abstract

The invention belongs to the field of degradable polymers, and discloses a topological polycarbonate-based supramolecule and preparation and application thereof, the topological polycarbonate-based supramolecule has the following topological structure: a representative core, a representative arm and a representative supramolecular functional group, and the arm is a poly(carbonate-ether).The topological polycarbonate-based supramolecular material is prepared by improving the molecular structure design, the key overall process design of the corresponding preparation method and the parameter conditions of all the steps, the bonding strength is high, the topological polycarbonate-based supramolecular material can be used as a bonding agent, especially a reversible bonding agent, and the preparation method is simple to operate and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of degradable polymers, and more specifically relates to a topological polycarbonate-based supramolecule and its preparation and application. Background technique [0002] Adhesives are widely used in the bonding of construction, flooring, furniture, steel, glass and other materials. The products on the traditional market mainly include rubber adhesives, acrylic adhesives, melamine formaldehyde adhesives, phenolic adhesives Adhesives, a series of adhesives such as urea formaldehyde, although these adhesives have certain advantages and applications, they also have some disadvantages: (1) most of them are made of volatile organic compounds (such as formaldehyde) (2) Most of the adhesives are not biodegradable and will have a negative impact on the environment; (3) Most of the adhesives are difficult to recycle and "controllable" adhesion . [0003] While traditional polymers bring great convenience to human society, t...

Claims

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Application Information

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IPC IPC(8): C08G83/00C09J187/00
CPCC08G83/008C09J187/00
Inventor 解孝林李晓静彭海炎周兴平王勇
Owner HUAZHONG UNIV OF SCI & TECH