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Method for preparing uramine-type macromolecule anti-bacterial agent

A polymer type, antibacterial agent technology, applied in the fields of botanical equipment and methods, biocides, disinfectants, etc., can solve the problems of poor thermal stability, easy migration of antibacterial ions or groups, uneven dispersion, etc. , the effect of obvious antibacterial effect and simple preparation process

Active Publication Date: 2010-01-20
安徽合汇金源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of poor thermal stability of existing polymer antibacterial agents, uneven dispersion in plastics, and easy migration of antibacterial ions or groups, the present invention aims to provide a high-efficiency, long-acting, Preparation method of safe, stable, low-toxic, well-dispersed and easy-to-process high-temperature guanidine polymer antibacterial agent

Method used

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  • Method for preparing uramine-type macromolecule anti-bacterial agent
  • Method for preparing uramine-type macromolecule anti-bacterial agent
  • Method for preparing uramine-type macromolecule anti-bacterial agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of guanidine polymer type antibacterial agent comprises the following steps:

[0030] A, 15g maleic anhydride is added in 40g dehydrated alcohol to be made into the maleic anhydride solution that massfraction is 27.3%, and 20g guanidine hydrochloride is added in 40g dehydrated alcohol to be made into massfraction and be 33.3% guanidine hydrochloride solution, described The two solutions were put into a three-necked flask, stirred, and a spherical condenser was added at the same time, nitrogen gas was introduced for 30 minutes, and reacted in a constant temperature water bath at 60°C for 7 hours to obtain a light yellow functionalized guanidine salt.

[0031] B, take by weighing 45g styrene and be dissolved in 75g dehydrated alcohol and be made into the styrene solution that mass fraction is 37.5%; Take by weighing 30g functionalized guanidine salt and be dissolved in 75g dehydrated alcohol and be made into the functionalized that massfraction is 28...

Embodiment 2

[0036] A, 15g maleic anhydride is added in 40g acetone and is made into the maleic anhydride solution that mass fraction is 27.3%, and 30g polyhexamethylguanidine hydrochloride is added in 40g acetone and is made into mass fraction and is 42.9% polyhexamethylguanidine For the hydrochloride solution, add the two solutions into a three-necked flask, stir, add a spherical condenser at the same time, pass nitrogen gas for 30 minutes, and react in a constant temperature water bath at 75°C for 6 hours to obtain a light yellow functionalized guanidine salt;

[0037] B, take by weighing 45g styrene and be dissolved in 75g toluene and be made into the styrene solution that massfraction is 37.5%, take by weighing 30g functionalized guanidine salt and be dissolved in 75g toluene and be made into the functionalized guanidine salt solution that massfraction is 28.6%;

[0038] Copolymerize the prepared functionalized guanidine salt solution with styrene solution, add 2.5g of dicumyl peroxide...

Embodiment 3

[0040] A, 15g maleic anhydride is added in 40g dehydrated alcohol to be made into the maleic anhydride solution that massfraction is 27.3%, and 20g guanidine hydrochloride is added in 40g dehydrated alcohol and is made into massfraction and is 33.3% guanidine hydrochloride solution, two kinds The solution was put into a three-necked flask, stirred, and a spherical condenser was added at the same time, and nitrogen gas was introduced for 30 minutes, and reacted in a constant temperature water bath at 85°C for 5 hours to obtain a light yellow functionalized guanidine salt.

[0041]B, take by weighing 45g styrene and be dissolved in 75g toluene and be made into the styrene solution that massfraction is 37.5%, take by weighing 30g functionalized guanidine salt and be dissolved in 75g toluene and be made into the functionalized guanidine salt solution that massfraction is 28.6%;

[0042] Mix the prepared functionalized guanidine salt solution with styrene solution for copolymerizati...

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Abstract

The invention relates to a method for preparing an uramine-type macromolecule anti-bacterial agent, comprising two steps as follows: A, mixing any one solution of guanidine hcl, Polyhexamethyleneguanidine chloride and polyhexamethylene biguanide hydrochloride with maleic anhydride solution; introducing nitrogen for constant-temperature water bath reaction to obtain functional uramine salt; B, mixing functional uramine salt solution with acrylamide and / or styrene for constant-temperature water bath reaction to obtain ivory-white stringy liquid; depositing soft white solid with solvent for vacuum drying to obtain ivory-white bulk uramine-type copolymer, i.e, uramine-type macromolecule anti-bacterial agent. The uramine-type macromolecule anti-bacterial agent has remarkable effect and simple synthesis process, ensures that the anti-bacterial group is hard to move and the processing thermal stability is excellent through copolymerization on macromolecule long chain. The invention can be widely used in fields of plastic, dope, powder dope, rubber, wood plastic, rubber plastic, spinning, water processing, and the like.

Description

technical field [0001] The invention belongs to the technical field of bactericides, and in particular relates to a preparation method of a guanidine-type polymer antibacterial agent. Background technique [0002] With the improvement of people's living standards in our country, low-pollution, healthy polymer products have been recognized by the public. Through the research on environmental microorganisms, people have found that the surface pollution and breeding bacteria of PP, PS and other plastic products, plastic products used in public facilities will pose a certain threat to the health of people who use and contact them due to frequent contact with people. At present, antibacterial plastic products have been widely used in Japan, South Korea and European and American countries. Some domestic antibacterial products are prone to discoloration, poor dispersion in the substrate, easy migration of antibacterial functional ions or groups, and poor thermal stability, which li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F222/38C08F220/56C08F283/00A01N47/44A01P1/00
Inventor 徐卫兵于太保任凤梅周正发
Owner 安徽合汇金源科技有限公司
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