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Application of guanidine polymer grafted with polyethyleneimine

A guanidine polymer, polyethyleneimine technology, applied in the application, biocide, animal repellent and other directions, can solve the problems of low adhesion and adsorption, decreased disinfection effect, etc., to broaden the scope of use, The effect of increasing the sterilization and disinfection efficiency and action time, and prolonging the action time

Pending Publication Date: 2022-07-05
SHIJIAZHUANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, due to its relatively few functional groups, the adhesion and adsorption properties are not high. When used for product grafting, the disinfection effect of the product will be greatly improved as the product is used for a long time. decline, thus limiting the application of guanidine disinfectants in different production fields and products

Method used

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  • Application of guanidine polymer grafted with polyethyleneimine
  • Application of guanidine polymer grafted with polyethyleneimine
  • Application of guanidine polymer grafted with polyethyleneimine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In a 100mL four-necked bottle equipped with a stirring paddle, an exhaust gas treatment device, a tee, a thermometer, and an oil bath, according to the molar ratio of ethylenediamine-terminated polyethyleneimine: polyhexamethyleneguanidine hydrochloride = 1 :25 was added, heated and stirred under the protection of nitrogen to heat up to 120 ° C, began to carry out the prepolymerization reaction and continued for 1 h, continued to slowly heat up to 160 ° C, carried out the heat preservation reaction for 5 h, and then heated up to 180 ° C again, kept for 4 h, took out the product, and sealed it in The bag was sealed to obtain the guanidine polymer GHPEI grafted with polyethyleneimine.

[0051] The antibacterial properties of the same concentration of polyhexamethyleneguanidine hydrochloride and 10ppm, 30ppm and 100ppm of guanidine polymer GHPEI were tested. The comparison method was as follows: taking Escherichia coli as the experimental object, the antibacterial properti...

Embodiment 2

[0072] In the present embodiment, the graft-modified maleic anhydride of the guanidine polymer GHPEI prepared by the method of Example 1 is used to obtain a novel disinfection product, and the method is as follows:

[0073] Weigh 4.8g of GHPEI and add it to a 100mL beaker, add a mixed solution of 15mL of water and ethanol (water:ethanol=1:2) to the three-necked flask, dissolve the disinfectant, then add MA (molar ratio) to the three-necked flask. , GHPEI:MA=1:1.2) Insert a thermometer into one mouth of the flask, submerge the thermometer into the solution, and place it in an oil bath, and use the thermometer to display a temperature of 45°C for 20h. After the reaction was completed, the obtained light yellow dilute liquid product was subjected to rotary evaporation at 40° C. for 20 min to remove most of the solvent. The product was then sedimented with acetone, and the supernatant was filtered, repeated 3 times to obtain a milky white viscous liquid, which was vacuum-dried at ...

Embodiment 3

[0076] In the present embodiment, the guanidine polymer GHPEI prepared by the method of Example 1 is grafted modified thiourea to obtain a novel disinfection product, and the method is as follows:

[0077] 3g of GHPEI prepared by the method of Example 1 was weighed and added to a 100mL three-necked flask, and a mixed solution of 15mL of water and ethanol (water:ethanol=1:2) was added to the three-necked flask to dissolve the disinfectant. Then add thiourea (the amount of thiourea is 8%) into the three-necked flask. Insert a thermometer into one mouth of the flask, submerge the thermometer into the solution, add a spherical condensation reflux device, and place it in an oil bath, and start the reaction for 1.5h when the thermometer shows a temperature of 100 °C. After the reaction was completed, the obtained light yellow dilute liquid product was subjected to rotary evaporation at 45°C for 20 min to remove most of the solvent. After the reaction was completed, the product was v...

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Abstract

The invention relates to an application of a polyethyleneimine grafted guanidine polymer, which comprises the following steps: forming a guanidine polymer by using polyhexamethylene guanidine hydrochloride and branched polyethyleneimine or ethylenediamine terminated polyethyleneimine, and grafting the polyethyleneimine grafted guanidine polymer by using the guanidine polymer as a grafting agent, other sterilization and disinfection compounds, disinfectants or water treatment filter membranes are grafted and modified, so that the bacteriostasis and disinfection effects of other sterilization and disinfection compounds, disinfectants or filter membranes are enhanced or endowed, and the sterilization and disinfection effect duration is prolonged. The application range of the guanidine disinfectant is widened, and the sterilization and disinfection efficiency and action time of the guanidine disinfectant are greatly improved from the aspects of effective binding property of guanidyl on a target compound / product, adsorbability of the guanidyl on the surface of a microbial cell membrane, distribution density of the guanidyl, the guanidyl overcoming steric hindrance and being exposed outside molecules and the like.

Description

technical field [0001] The invention relates to the technical field of disinfectant products, in particular to the use of guanidine polymers grafted with polyethyleneimine. Background technique [0002] In recent years, guanidine-based polymers (PHGH) have been widely used as disinfectants in daily life, and they have efficient bactericidal effects. However, in practical applications, due to its relatively few functional groups, its adhesion and adsorption are not high. When it is used for product grafting, as the product is used for a long time, the disinfection effect of the product will be greatly increased. decline, thus limiting the application of guanidine disinfectants in different production fields and products. SUMMARY OF THE INVENTION [0003] (1) Technical problems to be solved [0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides the use of guanidine polymers grafted with polyethyleneimine, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/44A01N25/24A01N37/40A01N43/16A01N47/28A01N33/12A01N43/08A01P1/00A01P3/00B01D61/02B01D67/00B01D69/02B01D69/12B01D71/68C08G81/00
CPCA01N47/44A01N25/24A01N37/40A01N43/16A01N47/28A01N33/12A01N43/08B01D61/027B01D69/02B01D69/12B01D67/0088B01D71/68C08G81/00B01D2325/48
Inventor 贾鹏飞刘子晴魏超月陈新乐黄玲玲刘俊雅马思怡李飞吴玉娇王帅张敏张伟亮王娟葛凤燕刘占旗邢云立章柏宁张星辰
Owner SHIJIAZHUANG UNIVERSITY
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