FILLED POLYVINYL CHLORIDE-BASED COMPOSITION FOR PROFILED ARTICLES AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2013 - IPC C08L27/06 C08K3/22 C08K3/26 C08K5/10 

FIELD: chemistry.

SUBSTANCE: invention relates to a composition and a method of producing filled compositions based on polyvinyl chloride, which are processed by extrusion into profiled articles used in construction, furniture industry etc. The filled composition for profiled articles contains polyvinyl chloride, a heat stabiliser, cellulose filler, a filler activator - triethylene glycol dimethacrylate or dimethacryl-(1,3)-(bis-glycerine)-(2)-phthalate, a lubricant, titanium dioxide and calcium carbonate. The method of producing said filled composition is realised by premixing cellulose filler and filler activator at temperature of 70-75°C for 10-15 minutes, followed by addition of polyvinyl chloride, heat stabiliser, titanium dioxide and calcium carbonate while stirring to 90-95°C for 2-3 minutes, adding lubricant while stirring for 3-5 minutes and raising temperature to 105-110°C, stirring the obtained composition at that temperature for 12-17 minutes and then cooling to 35-45°C.

EFFECT: improved processability and improved physical and mechanical properties of the filled polyvinyl chloride-based composition.

2 cl, 2 tbl