20090182118 | METHOD FOR PRODUCING POLYGUANIDINES - The invention relates to polyguanidine synthesis. The inventive method for producing polyguanidines consists in polycondensing a guanidine salt with diamine during heating in the presence of an organic acid or a mixture of organic acids. A heating process is carried out stepped process and consists in gradually increasing a temperature up to 120-130° C. and in holding at said temperature for 0.5-1.0 hour, in increasing a temperature up to 150-160° C. and in holding at said temperature for 3.5-4.0 hours and in increasing a temperature up to 170-180° C. and in holding at said temperature for 1.0-1.5 hours. Said method makes it possible obtain, in a more full manner and in shorter time, a polyguanidine, which exhibits a high biological activity. The thus obtained polyguanidines are not toxic and can be efficiently used for treating drinking and sewage waters and for producing antiseptic, cosmetic and disinfecting agents. | 07-16-2009 |