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Polysiloxane, preparation method, application and bacteriacide containing same

A polysiloxane and alkyl technology, applied in the field of polysiloxane and its preparation, can solve the problems of poor water solubility of organic heterocyclic structures, environmental pollution and the like

Inactive Publication Date: 2013-01-16
LUMIGENEX (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the N-halamine functional group has relatively poor water solubility due to its organic heterocyclic structure, so it needs to use an organic solvent during use, which is likely to cause environmental pollution

Method used

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  • Polysiloxane, preparation method, application and bacteriacide containing same
  • Polysiloxane, preparation method, application and bacteriacide containing same
  • Polysiloxane, preparation method, application and bacteriacide containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] (1) Magnetic stirring device, add 100mL of absolute ethanol to a 250mL three-necked reaction flask, add 72.14g (0.3mol, 1eq) of chloropropylmethyldimethoxysilane and 0.45g of capping agent hexamethylsiloxane Alkanes, 77.8g of concentrated hydrochloric acid was slowly added dropwise to the reaction liquid, and the reaction was refluxed overnight, and the reaction was completed in about 16 hours. Most of the solvent was removed by rotary evaporation with ethanol and water, and dried in a vacuum oven at 80°C for about 15 hours to obtain a colorless transparent liquid chloropropyl polymethylsiloxane for future use.

[0109] (2) R 1 Preparation of potassium salt: magnetic stirring device, 100mL of absolute ethanol, 25.6g of 5,5-dimethylhydantoin (0.2mol, 1eq) were added to a 250mL three-neck reaction flask, and 11.2g of potassium hydroxide ( 0.2mol, 1eq), stirred at room temperature to a colorless clear solution, and the reaction was completed in about 1h. Most of the solv...

Embodiment 2

[0143] (1) Refer to the following literature (Xing Xin, Li Xiaodong, Guo Aiqing, Cao Feng and Wang Jun, Research on the synthesis of polymethylchlorosilane by chlorination reaction, Journal of Functional Polymers, 2004, 17 (2): 181-184) to carry out polymerization Preparation of Methylchlorosilanes.

[0144] (2) R 1 Preparation of sodium salt: Magnetic stirring device, 100 mL of absolute ethanol, 25.6 g of 5,5-dimethylhydantoin (0.2 mol, 1 eq) were added to a 250 mL three-necked reaction flask, and 8.0 g of sodium hydroxide ( 0.2mol, 1eq), stirred at room temperature to a colorless clear solution, and the reaction was completed in about 1h. Most of the solvents ethanol and water were evaporated by rotary evaporation, and dried in a vacuum oven at 80°C for 4 days to obtain white solid 5,5-dimethylhydantoin sodium salt for future use.

[0145] (3) Magnetic stirring device, add 6g of polymethylchlorosilane and 50mL of anhydrous N,N-dimethylformamide (DMF) into a 100mL three-nec...

Embodiment 3

[0151] (1) Magnetic stirring device, add 100mL of absolute ethanol to a 250mL three-necked reaction flask, add 72.14g (0.3mol, 1eq) of chloropropylmethyldimethoxysilane and 0.45g of capping agent hexamethylsiloxane Alkanes, 77.8g of concentrated hydrochloric acid was slowly added dropwise to the reaction liquid, and the reaction was refluxed overnight, and the reaction was completed in about 16 hours. Most of the solvent was removed by rotary evaporation with ethanol and water, and dried in a vacuum oven at 80°C for about 15 hours to obtain a colorless transparent liquid chloropropyl polymethylsiloxane for future use.

[0152] (2) R 1 Preparation of potassium salt: magnetic stirring device, 100mL of absolute ethanol, 31.4g (0.2mol, 1eq) of 2,2,6,6-tetramethylpiperidinol were added to a 250mL three-neck reaction flask, and hydrogen was added to the reaction solution Potassium oxide 11.2g (0.2mol, 1eq), stirred at room temperature to a colorless and clear solution, the reaction...

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Abstract

The invention relates to polysiloxane containing halamine and quaternary ammonium salt on a side chain. The polysiloxane has the structure as shown in the general formula (I). The invention also relates to a preparation method of the polysiloxane. The preparation method comprises the steps as follows: carrying out reaction between the raw material and R1 sylvite and then between the raw material and long-chain primary amine, so as to obtain the polysiloxane containing both N-halamine and quaternary ammonium salt characteristic functional groups on the side chain. The polysiloxane integrates the advantages of the N-halamine and quaternary ammonium salt on bactericidal performance, and has the characteristics of being wide in bactericidal range, high in sterilization speed and capable of regenerating; and the polysiloxane can be widely applied to various cleaning agents and bacteriacides and porous and hard surface coatings.

Description

technical field [0001] The present invention relates to a kind of polysiloxane and its preparation method and application, and the fungicide containing the polysiloxane, specifically, the present invention relates to a polysiloxane containing N-halamine and quaternary ammonium salt and Its preparation method, and the bactericide or coating material containing the polysiloxane. Background technique [0002] Haloamine polymers refer to polymers with side chains containing haloamine functional groups, that is, N-X bonds (X can be C1, Br). N-X in this type of polymer will slowly decompose under the action of water molecules, releasing oxidized At the same time, the N-X bond in the polymer is reduced to an N-H bond. Since the N-Br bond is unstable and easy to decompose, chloramine polymers are commonly used in practical use. Chloride ions have an oxidizing effect and can kill microorganisms such as germs. After killing germs, after the polymer is rinsed with chlorine water, the...

Claims

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Application Information

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IPC IPC(8): C08G77/388D06M15/643
Inventor 何爱民于利平
Owner LUMIGENEX (SUZHOU) CO LTD
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