Preparation method for poly(guanidine hydrochloride adipate
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A technology of polyguanidine adipate hydrochloride and adipic acid, which is applied in the field of preparation of guanidine-containing polymers, can solve the problems of weak bactericidal ability and cannot meet the needs of production and life, and achieve the effect of strong bactericidal ability
Active Publication Date: 2016-02-10
JILIN YUNFEI PHARMA CO LTD
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Problems solved by technology
However, some guanidine-containing polymers have weak bactericidal ability and cannot meet the needs of production and life.
Method used
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[0013] The preparation method of polyguanidine adipate hydrochloride is to mix adipic acid and guanidine hydrochloride evenly in a container equipped with a temperature method, a water separator and a condenser, heat and melt, and the heating temperature is 120-160 ° C, the best The reaction temperature is 120°C; add a catalyst, the catalyst used is p-toluenesulfonic acid, concentrated sulfuric acid, phosphoric acid; divide water; add a molecular weight regulator, the molecular weight regulator used is mercaptopropionic acid, isooctyl 3-mercaptopropionate; the reaction ends After that, it was added to absolute ethanol immediately while it was hot, cooled to room temperature, recrystallized, and filtered to obtain polyguanidine adipate hydrochloride. The molar ratio of adipic acid, guanidine hydrochloride, catalyst and molecular weight regulator is 1:1:0.01-0.05:0.02-0.06.
[0014] The present invention will be described below through specific examples. It should be understood ...
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Abstract
The invention relates to a preparation method for poly(guanidine hydrochloride adipate). The preparation method includes the steps that adipic acid and guanidine hydrochloride are mixed to be even, heated and molten, wherein the heating temperature ranges from 120 DEG C to 160 DEG C; a catalyst is added; a molecular weight regulator is added; the water removing step is adopted in the whole reaction process, after the reaction is completed, the mixture is immediately added to absolute ethyl alcohol, cooled to room temperature, re-crystallized and filtered, and then poly(guanidine hydrochloride adipate) is obtained. According to poly(guanidine hydrochloride adipate), poly-guanidine disinfectant is structurally improved, electron withdrawing group acyl is introduced to enable the positive electricity of the guanidine group to be higher, and therefore the sterilization capacity of poly(guanidine hydrochloride adipate) is higher.
Description
technical field [0001] The invention relates to a preparation method of a guanidine-containing polymer, in particular to a preparation method of polyguanidine adipate hydrochloride. Background technique [0002] There are many types of fungicides on the market now, with different mechanisms of action, and the scope and effect of sterilization are also different. But all have their own defects, such as large toxic and side effects, small sterilization range, slow action speed, and high price. Guanidine-containing polymer has a broad spectrum of sterilization, low effective concentration, fast action speed, stable properties, and excellent performance of being easily soluble in water. It can be used at room temperature, has long-term antibacterial, no side effects, non-corrosive, colorless, and odorless , non-toxic, non-flammable, non-explosive, safe to use, moderately priced, and convenient to transport, it can be said to be the best fungicide. Common ones, such as polyhexa...
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