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Method for preparing poly(hexamethylene) hydrochloride

A technology of polyhexamethylene guanidine hydrochloride and guanidine hydrochloride, which is applied in the fields of botanical equipment and methods, chemicals for biological control, animal repellants, etc., can solve the problems of low degree of polymerization, narrow pH range, Short sterilization period and other problems, to achieve the effect of strong water solubility, wide sterilization range, and reducing the trouble of replacing fungicides

Inactive Publication Date: 2008-10-22
方建文
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: Aiming at the problem that polyhexamethyleneguanidine hydrochloride has a low degree of polymerization leading to a short sterilization period and a relatively narrow pH range, a polyhexamethyleneguanidine hydrochloride has been developed. The production method of methylguanidine hydrochloride

Method used

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  • Method for preparing poly(hexamethylene) hydrochloride

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] The schematic diagram of the technological process as shown in Figure 1 is operated:

[0017] a. Raw material ratio: the mass ratio of guanidine hydrochloride and 1,6-diaminohexane is 1: 1,

[0018] b. Put the well-proportioned raw materials into the reactor, stir and heat until completely dissolved and fully mixed, then raise the temperature to 150°C, add polyethylene glycol during the heating process, the amount of polyethylene glycol used is guanidine hydrochloride and 1, 6 5% of the total mass of diaminohexane;

[0019] c. After the temperature in the reactor was kept at 150°C for 2 hours, there was no NH in the reactor 3 Emit, the reaction finishes, obtains product polyhexamethylene guanidine hydrochloride 1#.

example 2

[0021] The schematic diagram of the technological process as shown in Figure 1 is operated:

[0022] a. raw material ratio: the mass ratio of guanidine hydrochloride and 1,6-diaminohexane is 1: 1,

[0023] b. Put the well-proportioned raw materials into the reactor, stir and heat until completely dissolved and fully mixed, then raise the temperature to 200°C, add polyethylene glycol during the heating process, the amount of polyethylene glycol used is guanidine hydrochloride and 1, 0.1% of the total mass of 6 diaminohexane;

[0024] c. After the temperature in the reactor was kept at 200°C for 3 hours, there was no NH in the reactor 3 Emit, the reaction finishes, obtains product polyhexamethylene guanidine hydrochloride 2#.

example 3

[0026] The schematic diagram of the technological process as shown in Figure 1 is operated:

[0027] a. raw material ratio: the mass ratio of guanidine hydrochloride and 1,6-diaminohexane is 1: 1,

[0028] b. Put the well-proportioned raw materials into the reactor, stir and heat until completely dissolved and fully mixed, then raise the temperature to 120°C, add polyethylene glycol during the heating process, the amount of polyethylene glycol used is guanidine hydrochloride and 1, 3% of the total mass of 6 diaminohexane;

[0029] c. After keeping the temperature in the reactor at 120°C for 2.5 hours, there is no NH in the reactor 3 Emit, the reaction finishes, obtains product polyhexamethylene guanidine hydrochloride 3#.

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Abstract

The invention relates to the bactericide technical field, in particular to a method for producing and making polyhexamethylene guanidine hydrochloride. The method comprises the following steps that: a. the raw material is matched; the mass ratio of guanidine hydrochloride to 1,6-diaminohexane is 1:1; b. the matched raw materials are put into a reaction kettle and are heated to the complete dissolution as well as are mixed sufficiently, the temperature is raised to between 120 and 200 DEG C, a catalyst is added in the temperature-rise period; 2. the reaction lasts 2 to 3 hours to the extent that no NH3 discharges from the reaction kettle, the reaction is over, and the product of polyhexamethylene guanidine hydrochloride is obtained. The method solves the problems of the prior polyhexamethylene guanidine hydrochloride that the polymerization degree is low, the sterilization period is short, and the pH range is not wide.

Description

technical field [0001] The invention relates to the technical field of bactericides, in particular to a production and preparation method of polyhexamethyleneguanidine hydrochloride. Background technique [0002] Harmful microorganisms bring many diseases to human beings and seriously endanger people's life safety. Therefore, the use of sterilization and disinfection has become an indispensable and important link to maintain human life safety, and various fungicides are the most commonly used. As we all know, general fungicides have a relatively large pungent odor and certain corrosiveness; and most of the fungicides have relatively high toxicity, which will cause environmental pollution. Therefore, the international community puts forward the following requirements for sterilization and disinfection products: wide sterilization spectrum, low minimum inhibitory concentration (MIC), fast action speed, stable photothermochemical properties, easy to dissolve in water, can be us...

Claims

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Application Information

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IPC IPC(8): C08G73/00A01N47/44A01P3/00
Inventor 方建文
Owner 方建文
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