Functional medical dressing and preparation method thereof

A functional and modifying agent technology, which is applied in the field of functional medical dressings and its preparation, can solve the problems of antibacterial effect of silver deposition, loss of antibacterial effect, easy discoloration of dressings, etc., to avoid silver ion deposition and antibacterial effect And long-lasting, color fastness is not easy to decolorize

Inactive Publication Date: 2017-02-22
长沙海润生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the silver-containing dressings on the market are easy to oxidize due to the characteristics of silver ions themselves, so the dressing itself is easy to change color and loses the antibacterial effect, and the uncontrollable release of silver easily leads to silver deposition and the antibacterial effect is not long-lasting.

Method used

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  • Functional medical dressing and preparation method thereof
  • Functional medical dressing and preparation method thereof
  • Functional medical dressing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 103.2g of diethylenetriamine and place it in a 500ml three-necked flask for cooling in an ice-water bath; use a constant pressure funnel to slowly add a mixed solution of 87.0g of methyl acrylate and 200ml of methanol dropwise under the protection of nitrogen, and react at room temperature for 4 hours after the dropwise addition Generate a light yellow intermediate, transfer the above intermediate to an eggplant-shaped bottle, remove methanol under reduced pressure on a rotary evaporator, and react under reduced pressure at 120°C for 4 hours to obtain a polyamino hyperbranched polymer, add 10g of succinic anhydride The temperature was raised to 140° C. and the reaction under reduced pressure was continued for 4 hours to obtain a polyamide dendrimer with a closed space network structure.

[0023] 500ml mass fraction of 0.1% silver nitrate solution is slowly added dropwise to 500ml mass fraction of 0.1% polyamide dendrimer aqueous solution. After the addition is comp...

Embodiment 2

[0026] Weigh 51.6g of diethylenetriamine and place it in a 250ml three-necked flask to cool in an ice-water bath; use a constant pressure funnel to slowly add a mixed solution of 43.0g of methyl acrylate and 100ml of methanol dropwise under the protection of nitrogen, and react at room temperature for 4 hours after the dropwise addition Generate a light yellow intermediate, transfer the above intermediate monomer to an eggplant-shaped bottle, remove methanol under reduced pressure on a rotary evaporator, then raise the temperature to 140 ° C for 2 hours under reduced pressure to obtain a polyamino hyperbranched polymer, add 10 g of maleic acid The temperature of the acid anhydride is raised to 150° C. and the reaction under reduced pressure is continued for 2 hours to obtain a polyamide dendrimer with a closed space network structure.

[0027] Slowly add 500ml of silver acetate solution with a mass fraction of 0.01% to 500ml of the above-mentioned polyamide dendrimer aqueous so...

Embodiment 3

[0030] Weigh 122.6g of tetraethylenepentamine and place it in a 500ml three-necked flask for cooling in an ice-water bath; use a constant pressure funnel to slowly add a mixed solution of 57.5g of methyl acrylate and 200ml of chloroform under the protection of nitrogen, and react at room temperature after the addition is complete Generate a light yellow intermediate in 4 hours, transfer the above intermediate monomer to an eggplant-shaped bottle, remove chloroform under reduced pressure on a rotary evaporator, and react under reduced pressure at 140°C for 2 hours to obtain a polyamino hyperbranched polymer, add The temperature of 13.4 g of succinic anhydride was raised to 150° C. and the reaction under reduced pressure was continued for 1 hour to obtain a polyamide dendrimer with a closed space network structure.

[0031] Slowly add 500ml of silver nitrate solution with a mass fraction of 0.005% to 500ml of the above polyamide dendrimer aqueous solution with a mass fraction of ...

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Abstract

A functional medical dressing and a preparation method thereof are provided; a multi-amino monomer is cooled with ice-water bath, a vinyl monomer and a solvent are dropwise added into the multi-amino monomer under the protection of nitrogen by using a dropper, reacting is allowed for 4 hours after dropwise adding to generate a light yellow intermediate, and the intermediate is placed on a rotary evaporator to remove the solvent under reduced pressure and is heated and depressurized to obtain multi-amino hyperbranched polymer; a modifier is added to the multi-amino hyperbranched polymer, and heating and depressurizing are performed to obtain closed spatial network structural polyamide tree-like macromolecular polymer; silver ion compound solution is added to the closed spatial network structural polyamide tree-like macromolecular polymer solution to complex-reduce the polymer to obtain stable nano silver solution; rolled pure-cotton nonwoven or degreased gauze is passed through an immersion tank holding the above nano silver solution, and is then subjected to padding, hot blast drying, cutting, packaging and cobalt 60 irradiation sterilization to obtain the medical dressing.

Description

technical field [0001] The invention relates to a functional medical dressing, in particular to a functional medical dressing and a preparation method thereof. Background technique [0002] Medical dressings are a type of clinical medical material that temporarily covers burns, ulcers, wounds and other wounds. Its main function is to control the exudate of the wound and protect the wound from external pollution such as bacteria and dust particles. [0003] Due to its small size and large specific surface area, silver nanomaterials have unique optical, electrical, magnetic, thermal, and antibacterial properties, and are widely used in chemical detection, biological imaging, and antibacterial preparations. Nano-silver has extremely strong nano-activity, exhibits super-long antibacterial ability, and can kill common bacteria, fungi, mycoplasma and other pathogenic microorganisms at extremely low concentrations. Compared with antibiotics, nano-silver has the characteristics of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/44A61L15/46A61L15/26C08G69/26C08G69/28D06M15/59D06M11/83D06M101/06
CPCA61L15/44A61L15/26A61L15/46A61L2300/104A61L2300/404C08G69/26C08G69/28D06M11/83D06M15/59D06M16/00D06M2101/06C08L77/06
Inventor 史丙华姜志华何杰
Owner 长沙海润生物技术有限公司
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