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Structural antibacterial acrylic emulsion, and preparation method and application thereof

An acrylic emulsion and structural technology, which is applied in the field of polymers, can solve the problems of antibacterial properties to be improved, unsatisfactory copolymerization reaction efficiency, and low yield, and achieve low storage stability, human safety, and simple preparation process.

Inactive Publication Date: 2017-11-24
南京邦鼎生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the yield of monomers in this method is low, the efficiency of further copolymerization is not ideal, and the antibacterial performance needs to be improved.

Method used

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  • Structural antibacterial acrylic emulsion, and preparation method and application thereof
  • Structural antibacterial acrylic emulsion, and preparation method and application thereof
  • Structural antibacterial acrylic emulsion, and preparation method and application thereof

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preparation example Construction

[0059] And the preparation method of emulsion of the present invention is also comparatively easy, and concrete steps can refer to as follows:

[0060] At first, be the preparation of polymerizable antibacterial monomer, it comprises the following steps:

[0061] (a) preparation of polyhexamethyleneguanidine and / or polyhexamethyleneguanidine hydrochloride:

[0062] Under gas protection (preferably nitrogen protection or inert gas protection) conditions, guanidine and / or guanidine hydrochloride and hexamethylenediamine are heated and stirred for reaction, and the heating temperature is preferably controlled at 110-120°C; preferably, guanidine and / or hydrochloric acid The consumption of guanidine is 10~20 parts, and the consumption of hexamethylenediamine is 10~20 parts; Simultaneously, preferably, described is to carry out the reaction of above two kinds of raw materials in four-necked flask, and set corresponding tail gas absorption device, to The tail gas ammonia produced by...

Embodiment 1

[0081] Embodiment 1: the preparation of polyhexamethyleneguanidine hydrochloride (PHMG)

[0082] Weigh 14.5 g of guanidine hydrochloride and 17.4 g of hexamethylenediamine and put it into a four-necked flask equipped with a condenser tube and a thermometer. Simultaneously, nitrogen protection is carried out, and the temperature is raised to 120° C., and continuously stirred with a mechanical stirrer. The tail gas (ammonia) released by the reaction is Absorbed with dilute hydrochloric acid, after two hours, the reaction temperature was raised to 180°C for polycondensation reaction, after 4 hours of heat preservation, the heating was stopped, and the material was discharged while it was hot to obtain polyhexamethyleneguanidine hydrochloride (PHMG). Its molecular weight is characterized by MALDI-TOF, and the characterization results are as follows: figure 1 shown.

Embodiment 2

[0083] Embodiment 2: the preparation of polyhexamethyleneguanidine hydrochloride (PHMG)

[0084] Weigh 14.5 g of guanidine hydrochloride and 17.4 g of hexamethylenediamine and put it into a four-necked flask equipped with a condenser tube and a thermometer. Simultaneously, nitrogen protection is carried out, and the temperature is raised to 120° C., and continuously stirred with a mechanical stirrer. The tail gas (ammonia) released by the reaction is Absorbed with dilute hydrochloric acid, after two hours, the reaction temperature was raised to 180°C for polycondensation reaction, after 6 hours of heat preservation, the heating was stopped, and the material was discharged while it was hot to obtain polyhexamethyleneguanidine hydrochloride (PHMG). Its molecular weight is characterized by MALDI-TOF, and the characterization results are as follows: figure 2 shown.

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Abstract

The invention provides a structural antibacterial acrylic emulsion, and a preparation method and an application thereof. The structural antibacterial acrylic emulsion is prepared from an emulsifier, an initiator, sodium bicarbonate and a polymerizable antibacterial monomer polyhexamethylene guanidine hydrochloride modified with butyl acrylate, methylmethacrylate and allyl glycidyl ether in a semi-continuous seed emulsion polymerization manner. The preparation method is simple and environmentally-friendly, and is suitable for industrial production; the polyhexamethylene guanidine hydrochloride used as an antibacterial functional group makes the prepared emulsion reserve the self antibacterial capability of the polyhexamethylene guanidine hydrochloride, makes the emulsion and a film formed by the emulsion have excellent antibacterial properties, has no influences on the other performances of the emulsion, and is very safe to human bodies.

Description

technical field [0001] The present invention relates to the technical field of polymers, in particular to a structural antibacterial acrylic emulsion and a preparation method thereof; meanwhile, the present invention also relates to allyl glycidyl ether-based modified polyhexamethylene guanidine hydrochloride and / or Or the polymerizable antibacterial monomer of polyhexamethylene guanidine and its preparation method; and the application of the film-former of structural antibacterial acrylic emulsion in antibacterial film. Background technique [0002] With the continuous improvement of human living standards, people have higher requirements for living, working, living environment quality and health. In the natural environment, various bacteria, fungi and other microorganisms are widely distributed. These microorganisms not only bring great damage to various materials, but also cause great damage to human health due to various infectious diseases caused by the action of microo...

Claims

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Application Information

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IPC IPC(8): C08F283/00C08F220/18C08F220/14C08G73/00C09D133/08C09D5/14
CPCC08F283/00C08G73/00C09D5/14C09D133/08C08F220/1804
Inventor 郭宏伟邓建胡剑青
Owner 南京邦鼎生物科技有限公司
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