BINDER AND RHEOLOGY MODIFIER FOR AQUEOUS SUSPENSIONS OF MINERAL SUBSTANCES, GRANULES OBTAINED AND APPLICATION THEREOF Russian patent published in 2008 - IPC C08F220/06 C08F220/16 C08F220/18 C08F220/54 C08J3/205 C09D133/08 

FIELD: CHEMISTRY.

SUBSTANCE: invention relates to copolymer, which is simultaneously a binder and a rheology modifier for aqueous suspensions of pigments an/or mineral filling substances, and is used to produce granules of pigments and/or mineral filling substances. Granules are recovered and formed from elementary particles with specific surface area determined according to Brunauer-Emmet-Teller method withing 0.5 m²/g to 200 m²/g range, as defined in ISO standart 9277, granules, easily re-dispersed in thermoplastic resins, which consist of monomer units а), b), с) and d), sum of which is 100 percent by weight. The said invention relates to rheology modifier for aqueous suspension of pigmnets and/or mineral filling substances, which is also a binder, to viscosity-reducing agents for aqueous suspensions of pigments and/or mineral filling substances, which are also binders, to dispersing agent, which is also a binder, to application of the said copolymer, to granules of pigments and/or mineral filling substances, to application of the said granules and/or mineral filling substances in fields relating to fine powder use, to filled thermoplastic resin, to PVC-based resin and to polyolefin resin, obtained using the said granules and/or mineral filling substances, as well as to products made of such resin. Utilisation of the said copolymer provides for starting suspension viscosity control, when preparing agglomerated pigments and/or mineral filling substances, which can be easily re-dispersed in thermoplastic resins, PVC-based in particular. Recoverable granules of pigments and/or mineral filling substances obtained using the said copolymer are easily dispersable in plastic compositions, as well as in paint compositions.

EFFECT: lower cost of plastic and improved mechanical and temperature resistance thereof.

36 cl, 7 ex, 1 tbl