DISPERSING SUBSTANCE, CONTAINING COPOLYMER MIXTURE Russian patent published in 2014 - IPC C08L29/10 C08L33/02 C08L35/08 B01F17/44 C04B24/24 

FIELD: chemistry.

SUBSTANCE: invention relates to polymer composition used in composition of dispersing substance, its obtaining and application. Claimed is polymer composition for application as dispersing substance, which contains 3-95 wt % of copolymer H and 3-95 wt % of copolymer K, with each of copolymers H and K containing structural units of polyether macromonomer and structural units of acid monomer , which are present in copolymers H and K, in each case, in molar ratio 1:20-1:1, and at least 20 mol. % of all structural units of copolymer H and at least 25 mol% of all structural units of copolymer K, in each case, are present in form of structural unit of acid monomer, with structural units of polyether macromonomer of copolymers H and K containing side chains, in each case, which contain, at least, 5 atoms of ether oxygen, and quantity of atoms of ether oxygen in side chain of structural units of polyether macromonomer of copolymers H and K, in each case, varies in such a way that respective diagrams of density of distribution of probabilities, where quantity of atoms of ether oxygen, in each case, is presented on abscissa axis and respectively corresponding frequencies of occurrence of copolymers H and K, in each case, are presented on ordinate axis, contain, in each case, at least, 2 maximums, whose abscissa values, in each case, differ from each other by more than 7 atoms of ether oxygen, and diagrams of density of distribution of probability of copolymers H and K differ from each other by the fact that abscissa value of, at least, one maximum of copolymer H, in each case, differs by more than 5 atoms of ether oxygen from abscissa values of all maximums of copolymer K, and/or by the fact that mean arithmetic values of atoms of ether oxygen of structural units of macromonomer of polyether of copolymers H and K differ from each other by more than 5 atoms of ether oxygen. Method of obtaining said composition, its application and based on it dispersing preparation are also claimed.

EFFECT: dispersing preparation based on claimed composition is economical, makes it possible to obtain effective hydraulic binding substances, used as superplasticiser for concrete.

23 cl, 2 dwg, 4 ex