PROCESSED FILLERS, COMPOSITIONS CONTAINING THEM, AND PRODUCTS PRODUCED FROM THEM Russian patent published in 2018 - IPC C09C3/08 C09C1/30 C08K3/36 C08K5/09 C08K9/04 C08F8/42 C08L7/02 

FIELD: chemistry.

SUBSTANCE: method of producing a treated filler comprises treating the suspension containing a raw filler that is not pre-dried using a treating composition containing a treating agent. The treating agent comprises at least one compound selected from an unsaturated fatty acid containing a linear or branched optionally substituted C₄-C₃₈alkyl having at least one carbon-carbon double bond; a derivative of the said unsaturated fatty acid, wherein at least one carbon-carbon double bond is reacted to include at least one functional group; and/or salts of the said unsaturated fatty acid. The untreated filler is selected from aluminium silicate, silica gel, colloidal silicon dioxide, precipitated silica, and mixtures thereof. The suspension of the treated filler is dried to obtain a treated filler.

EFFECT: invention makes it possible to improve the compatibility of materials with a high specific surface area with the polymer matrix into which they are incorporated, to reduce the process viscosity and to prevent the phase separation of these materials and the polymer matrix.

39 cl, 10 tbl, 2 ex