POLYMER COMPOSITION Russian patent published in 2012 - IPC C08F292/00 C08L101/00 C08L101/06 C08L67/00 C08L77/00 C08L25/00 C08K3/00 C08K3/36 C09D1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to polymer chemistry, specifically to moulding articles made from a polymer composition containing an acrylic copolymer matrix and particles containing an inorganic oxide with weight-average particle size equal to or less than 400 nm. The polymer composition is obtained by polymerising a mixture of methylmethacrylate and one or more copolymerisable lower alkyl(alk)acrylate comonomers in the presence of said particles and a dispersant which contains an ethylenically unsaturated compound containing one ethylenically unsaturated bond. The polymer composition has weight-average molecular weight from 20000 to 250000 Da. Described also is a method of obtaining the polymer composition, a method of obtaining articles from the polymer composition and use of the articles in construction, lighting etc.

EFFECT: polymer composition, obtained in the presence of inorganic oxide particles with size less than 400 nm in the presence of a dispersant which contains an ethylenically unsaturated compound which contains one ethylenically unsaturated double bond, is characterised by higher chemical resistance and improved processability in a melt compared to a polymer composition which does not contain inorganic oxide particles.

40 cl, 4 dwg, 6 tbl, 23 ex