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Modified polycarbonate with specific terminated-structure and preparation method and application thereof

A polycarbonate, specific technology, applied in the direction of botany equipment and methods, applications, chemicals for biological control, etc., can solve the problem that the inorganic powder antibacterial agent is difficult to disperse uniformly and does not really exert antibacterial effect, polycarbonate Solve problems such as the influence of ester mechanical properties, achieve excellent antibacterial properties, promote large-scale applications, and achieve excellent overall performance

Inactive Publication Date: 2017-08-04
甘肃银光聚银化工有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-hardness polycarbonate antibacterial composite material uses the addition of inorganic powder antibacterial agent to achieve antibacterial effect, but the inorganic powder antibacterial agent has the problem that it is difficult to disperse uniformly during processing
[0006] So far, the preparation of antibacterial polycarbonate plastics usually chooses to add antibacterial agents to polycarbonate. Now common antibacterial agents can be divided into inorganic powder antibacterial agents and organic liquid antibacterial agents. Among them, organic liquids are easy to decompose when exposed to high temperatures, but polycarbonate The processing temperature of ester is high, so the addition of organic liquid antibacterial agent does not really play an antibacterial effect; and inorganic powder antibacterial agent is difficult to disperse evenly in the resin during processing due to the high viscosity of polycarbonate resin and needs to be added to the carrier material , and these carrier materials will have a great impact on the mechanical properties of polycarbonate, and will also discolor polycarbonate
[0007] In summary, the existing antibacterial polycarbonate materials have inherent defects and inconveniences, which need to be improved urgently. Therefore, it is necessary to develop a new type of polycarbonate with strong antibacterial properties and excellent mechanical properties.

Method used

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  • Modified polycarbonate with specific terminated-structure and preparation method and application thereof
  • Modified polycarbonate with specific terminated-structure and preparation method and application thereof
  • Modified polycarbonate with specific terminated-structure and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0042] Add 228.3kg of bisphenol A, 100kg of sodium hydroxide and 1800kg of water into the reactor, mix and stir until bisphenol A and sodium hydroxide are completely dissolved in water, then add 1.22kg of catalyst triethylamine and stir until the triethylamine All dissolved, then add 2.5kg triclosan and stir evenly. Then add 5000L inert organic solvent methylene chloride in the reactor and stir evenly under the condition of vigorous stirring, simultaneously in the solution, drip concentration is the pH value of the sodium hydroxide aqueous solution of 10% by weight to keep the reaction system at 9.5, then with The speed of 120g / min is passed into 128.7kg phosgene to react and the temperature of the reaction system is maintained at 35°C, while adding dropwise to the solution a concentration of 10% by weight of sodium hydroxide aqueous solution to keep the pH value of the reaction system at 10.7; After 1 hour, the reaction system was separated and purified and the organic solvent ...

preparation Embodiment 2

[0044] Add 228.3kg of bisphenol A, 110kg of sodium hydroxide and 2000kg of water into the reactor, mix and stir until bisphenol A and sodium hydroxide are completely dissolved in water, then add 1.52kg of catalyst triethylamine and stir until the triethylamine All dissolved, then add 3.9kg triclosan and stir evenly. Then add 5400L inert organic solvent methylene chloride into the reactor and stir evenly under the condition of vigorous stirring, simultaneously in the solution, dropwise adding concentration is the pH value of 10% by weight of sodium hydroxide solution to keep the pH value of the reaction system at 9.7, followed by The speed of 150g / min is passed into 130.5kg phosgene to react and the temperature of the reaction system is maintained at 35°C, while adding dropwise to the solution a concentration of 10% by weight of sodium hydroxide aqueous solution to keep the pH value of the reaction system at 11.0; to be reacted After 1 hour, the reaction system was separated an...

preparation Embodiment 3

[0046] Add 228.3kg of bisphenol A, 110kg of sodium hydroxide and 2500kg of water into the reactor, mix and stir until bisphenol A and sodium hydroxide are completely dissolved in water, then add 1.92kg of catalyst triethylamine and stir until the triethylamine All dissolved, then add 6.8kg triclosan and stir evenly. Then add 5900L inert organic solvent methylene chloride into the reactor and stir evenly under the condition of vigorous stirring, while adding dropwise concentration to the solution is the pH value of 10% by weight of sodium hydroxide solution to keep the pH value of the reaction system at 9.8, followed by The speed of 170g / min feeds 135.9kg phosgene to react and the temperature of the reaction system is maintained at 45°C, while adding dropwise a concentration of 10% by weight of sodium hydroxide aqueous solution to the solution to keep the pH value of the reaction system at 11.2; After 1 hour, the reaction system was separated and purified and the organic solven...

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Abstract

The invention discloses modified polycarbonate with a specific terminated-structure and a preparation method and application thereof. The modified polycarbonate is prepared from a polycarbonate main chain structure and the terminated-structure. The modified polycarbonate has relatively good antibacterial property and also has excellent combination property.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and specifically relates to a modified polycarbonate with a specific end-capping structure, and also relates to a method for preparing the modified polycarbonate with a specific end-capping structure and the modified polycarbonate with a specific end-capping structure. The use of the modified polycarbonate with a specific end capping structure. Background technique [0002] Polycarbonate (Polycarbonate, PC) is a general term for polymers containing carbonate groups in their molecular chains and various materials based on them. According to the structure of the ester group, it can be divided into aliphatic, alicyclic, aromatic, aliphatic-aromatic and other types. Among them, aliphatic polycarbonate has low melting point, high solubility, poor thermal stability and mechanical strength. However, it cannot be used as engineering plastics; alicyclic and aliphatic-aromatic polycarbonates can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G64/42C08G64/24A01N47/06A01P1/00
CPCA01N47/06C08G64/24C08G64/42
Inventor 葛建芳郑文亮温炳章
Owner 甘肃银光聚银化工有限公司
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