BIOCIDAL COMPOSITIONS, THE COMPOSITIONS DISSOLVING THE IRON SULFIDE, THEIR APPLICATION, METHODS OF TREATMENT OF THE WATER SYSTEM Russian patent published in 2008 - IPC C02F5/14 A01N57/34 C08K5/49 C08L33/02 C08L33/14 C08L43/02 

FIELD: organic chemistry; chemical industry; other industries; production of the biocidal compositions and their application.

SUBSTANCE: the invention is pertaining to the synergistic biocidal compositions and to the compositions dissolving sulfides of metals. The biocidal composition or the composition dissolving the iron sulfide includes (i) THP-salt and (ii) the biopenetrant. The biopenetrant represents the polymer of the non-saturated carboxylic acid or the interpolymer of the non-saturated carboxylic acid with the vinyl-sulfonic acid. At that the end groups of the indicated polymer or the interpolymer are the groups of the vinyl-sulfonic acid (VPA) or vinyliden-1,1 of the diphosphin acid (VDPA), either the indicated polymer or the interpolymer contains such monomers inserted into the main chain of the macromolecule. The present composition synergistically increases the biocidal effectiveness of the THP-salt concerning both the planktonic (free-floating) and the motionless (affixed) bacteria, and also synergistically increases the effectiveness of THP-salt in dissolution of the scale of iron sulfide. The invention also describes the application of the indicated composition in the capacity of the biocide or for dissolution of the metal sulfide and the method of treatment of the water system infected or inclined to be Infected by the micro-organisms such as bacteria, fungi, or algae with usage of the indicated composition, and the method of treatment of the water system containing the metal sulfide scale or being in contact with the metal sulfide scale, with usage of the indicated composition.

EFFECT: the invention ensures, that the biocidal compositions synergistically increase the biocidal effectiveness of the THP-salt concerning the free-floating and motionless bacteria and the increased effectiveness of THP-salt in dissolution of the iron sulfide scale.

18 cl, 5 ex, 3 tbl