Biocidal polymers based on guanidine salts
AssigneeP.O.C. Oil Industry Technology Beratungsges m.b.H.
InventorsOskar J. Schmidt, Andreas Schmidt, Dimitri Toptchiev
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Abstract
The invention relates to biocidal polymers based on guanidine salts characterized in that they are representatives of a number of polyoxyalkylene guanidines and their salts and are a product of a polycondensation of guanidine salts with diamines which include two amino groups and polyoxyalkylene chains therebetween. In addition to a high bactericidity, these new polymer products are provided with a relatively low toxicity, an increased hydrophily, a quick and complete dilution in water, increased values of relative molar mass, and distinct characteristics of polymer surface active substances.
Claims9
A biocidal polymer guanidine derivative based on diamines which include two amino groups and oxyalkyl chains therebetween, wherein the guanidine derivatives are a product of a polycondensation of a guanidine acid addition salt with diamines which include polyoxyalkylene chains between two amino groups.
A process for producing polyoxyalkylene guanidine salts using diamines which are included between two amino groups in a liquid medium, wherein the liquid diamines are exposed to the polycondensation with guanidine salts in a medium of liquid diamine under permanent thorough mixing from the beginning to the completion of the reaction at an increased temperature and at the duration of the polycondensation of 9–16 hours depending of the diamine used.
A process for producing polyoxyalkylene guanidine hydrochlorides, wherein the reaction of the polycondensation of guanidine hydrochloride and liquid diamines with the polyoxyalkylene group and the two amino groups occurs at an original mol ratio of reagents of 1:1 in a liquid reaction medium (in the medium of liquid diamine) under permanent thorough mixing from the beginning to the completion of the reaction at temperatures of 150–170° C. and at the duration of the polycondensation of 18–25 hours depending on the diamines used.
Dependencies are inferred from the claim text.