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A Topological Polycarbonate-Based Supramolecule and Its Preparation and Application

A polycarbonate and topological technology, applied in the direction of adhesives, etc., can solve the problems of adhesives not having biodegradable performance, negative environmental impact, low bonding strength, etc., and achieve good biodegradability and biocompatibility The effect of capacitive, good light transmittance, good adhesive performance

Active Publication Date: 2022-02-18
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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  • A Topological Polycarbonate-Based Supramolecule and Its Preparation and Application
  • A Topological Polycarbonate-Based Supramolecule and Its Preparation and Application
  • A Topological Polycarbonate-Based Supramolecule and Its Preparation and Application

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preparation example Construction

[0057] 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.

[0058] Wherein, the hexamethylene diisocyanate half-blocked 2-ureido-4[1H]-pyrimidinone has a molecular structure of the formula (III):

[0059]

[0060] R described in formula (III) 3 selected from -CH 3 , 1-ethylpentyl.

[0061] The topological poly(carbonate-ether) polyol has the following topology:

[0062]

[0063] for the nucleus, is the arm; among them,

[0064] The core can be any one of benzene ri...

Embodiment 1

[0083] 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

[0085] 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 of dibutyltin dilaurate and 10mmol of dry chloroform were mixed, stirred at 60°C and 500rpm 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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Abstract

The invention belongs to the field of degradable polymers, and discloses a topological polycarbonate-based supramolecule and its preparation and application. The topological polycarbonate-based supramolecule has the following topology, representing the core, representing the arm, representing supramolecular functional groups; and, the arms are poly(carbonate-ether). The present invention improves the molecular structure design, the key overall flow process design of the corresponding preparation method, and the parameter conditions of each step to prepare a topological polycarbonate-based supramolecular material with high bonding strength and can be used as a binder especially It is the application of reversible binder, the preparation method is easy to operate, and is 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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Patent Type & Authority Patents(China)
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