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Polyolefin antibacterial master batch, preparation thereof, and application thereof for preparing antibacterial polycondensate

A technology of antibacterial masterbatch and polyolefin, which is applied to the application field of polyolefin antibacterial masterbatch and its preparation and preparation of antibacterial polycondensate, can solve the problems of decreased antibacterial effect, difficult antibacterial for a long time, dissolution loss and the like, and achieves rapid The effect of killing bacteria, the technical scheme is simple, flexible and easy to operate, and easy to prepare for large-scale industrial production

Active Publication Date: 2019-08-16
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyhexamethyleneguanidine salt has strong water solubility, and it is used for the surface disinfection treatment of the environment or products in the fields of agriculture, food, hospital, catering, etc.; It is easy to dissolve and lose, and the antibacterial effect drops seriously, so it is difficult to antibacterial for a long time

Method used

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  • Polyolefin antibacterial master batch, preparation thereof, and application thereof for preparing antibacterial polycondensate
  • Polyolefin antibacterial master batch, preparation thereof, and application thereof for preparing antibacterial polycondensate
  • Polyolefin antibacterial master batch, preparation thereof, and application thereof for preparing antibacterial polycondensate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Weigh 48.5g of guanidine hydrochloride and 46.5g of hexamethylenediamine into a three-necked flask, and place them in an oil bath equipped with mechanical stirring. Stir the reaction at 100°C for 1.5 hours, then continue to raise the temperature to 160°C for 4 hours. Then 20g of dodecylamine was added, and after 1 hour, the temperature was raised to 175° C. and the reaction was continued for 3 hours. Finally, the unreacted monomer was removed by vacuuming, and poured out while hot to obtain the guanidinium salt antibacterial agent.

[0045] In the second step, 8g of the above-mentioned synthetic guanidinium salt antibacterial agent and 60g of polypropylene grafted maleic anhydride are melted and reacted in a torque rheometer. material.

[0046] The last step is to prepare antibacterial polyester or nylon, and the concentration of antibacterial agent is respectively 0.5wt%, 1.0wt%, 1.5wt% and 2.0wt%. Specifically, polyester or nylon 67, 64, 61, and 58 g were weighed, a...

Embodiment 2

[0048] In the first step, weigh 38.2 g of guanidine hydrochloride, 51.1 g of hexamethylenediamine and 16.5 g of metformin hydrochloride in a three-necked flask, and place in an oil bath equipped with mechanical stirring. Stir and react at 100°C for 1.5 hours, then continue to heat up to 160°C for 4 hours, further raise the temperature to 175°C and continue to react for 3 hours, pour out while hot to obtain the guanidinium salt antibacterial agent.

[0049] In the second step, 6g of the above-mentioned synthetic guanidinium salt antibacterial agent and 60g of ethylene-octene copolymer grafted glycidyl methacrylate are melt-reacted in a torque rheometer, and the reaction conditions are 160°C, 50rpm and 15min, to obtain Polyolefin functionalized antimicrobial masterbatch.

[0050] The last step is to prepare antibacterial polyester or nylon, and the concentration of antibacterial agent is respectively 0.5wt%, 1.0wt%, 1.5wt% and 2.0wt%. Specifically, 66, 62, 58, and 54 g of polye...

Embodiment 3

[0052] In the first step, weigh 47.8g of guanidine hydrochloride and 45.2g of hexamethylenediamine and put them in the first three-necked flask, and place them in an oil bath equipped with mechanical stirring. Stir the reaction at 100°C for 1.5 hours, then continue to heat up to 160°C for 3.5 hours. Then 27g of octadecylamine was added, and after 1.5 hours of reaction, the temperature was raised to 175° C. to continue the reaction for 3 hours. Finally vacuumize to remove the unreacted monomer, and pour it out while hot to obtain the guanidinium salt antibacterial agent.

[0053] In the second step, 6g of the above-mentioned synthesized guanidinium salt antibacterial agent and 60g of polyethylene grafted maleic anhydride are melted and reacted in a torque rheometer. material.

[0054] The last step is to prepare antibacterial polyester or nylon, and the concentration of antibacterial agent is respectively 0.5wt%, 1.0wt%, 1.5wt% and 2.0wt%. Specifically, polyester or nylon 66...

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Abstract

The present invention relates to polyolefin antibacterial master batch, preparation thereof, and an application thereof for preparing an antibacterial polycondensate. The present invention is to produce a guanidine salt oligomer. By grafting the guanidine salt oligomer onto the molecular chain of polyolefin, the polyolefin antibacterial master batch is obtained to achieve long-time antibacterial and non-leaching purposes; then the polyolefin antibacterial master batch is subjected to melt blending with the polycondensate to prepare a long-acting antibacterial polycondensate. The antibacterialpolyester, or the antibacterial nylon, or the antibacterial polymer alloy prepared by the present invention has a non-dissolving, long-acting, and rapid antibacterial effect as compared with the priorart. The technical scheme is simple, flexible and easy to operate. By using the melt reaction and the melt blending method, the preparation process does not involve the use of a solvent; therefore, the method is non-polluting, non-toxic, environmentally friendly, and easy to be industrially produced on a large scale.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polyolefin antibacterial masterbatch and its preparation and application for preparing antibacterial condensation polymers. Background technique [0002] In our daily life, we often come into contact with polymer materials such as polyester, nylon and ABS. These materials are often exposed to various environments and will be corroded by many microorganisms, thus lurking many health and safety risks. The presence of microorganisms can also have adverse effects on materials such as erosion and discoloration. Therefore, it is of great significance to develop polymer materials with antibacterial functions. [0003] At present, the commonly used antibacterial agents are inorganic silver series. The silver-based antibacterial agent belongs to the dissolution type antibacterial agent, which has good bactericidal effect and good heat resistance. At present, silver-based a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/02C08G73/00C08L67/02C08L77/00C08L87/00
CPCC08G73/00C08G81/024C08L67/02C08L77/00C08L87/005
Inventor 危大福曹伟管涌郑安呐许祥
Owner EAST CHINA UNIV OF SCI & TECH
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