METHOD OF PRODUCING LATEX PAINTS CONTAINING BIOCIDES, GROUND DISPERSION PHASE FOR LATEX PAINTS Russian patent published in 2013 - IPC C09D5/02 C09D17/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a latex paint composition containing biocides. The method of producing a paint composition involves preparation of a ground phase by mixing one or more pigments, other components of the ground phase and a biocide which is insoluble in water and mixing the ground phase with one or more latex resins and other liquefying components, where the biocide which is insoluble in water is a composition with high content of solid particles which preferably contains at least 50 wt % biocide. Components of the ground phase are selected from one or more components such as: cosolvents, coalescence agents, thickeners, surfactants, pigment dispersers, neutralising substances and antifoaming agents. Liquefying components are selected from one or more components such as: latex resins, pigment suspensions, coalescence agents, thickeners, neutralising substances and antifoaming agents. The water-insoluble biocide is particularly 1,2-benzisothiazol-3(2H)-one and is a composition with high content of solid particles which preferably contains at least 80 wt % biocide. The invention also relates to a ground phase for use in the method of producing latex paint which contains one or more pigments, ground phase components and a biocide which is insoluble in water, said biocide being a composition with high content of solid particles which preferably contains at least 50 wt % biocide. Components of the ground phase are selected from one or more components such as: water, cosolvents, coalescence agents, thickeners, surfactants, pigment dispersers, neutralising substances and antifoaming agents.

EFFECT: method enables to include a biocide in a form which does not contain volatile organic compounds.

11 cl, 3 tbl