POLYMER COMPOSITION Russian patent published in 2024 - IPC C08L27/06 C08K3/26 C08K3/36 C08K5/15 

FIELD: chemistry.

SUBSTANCE: invention relates to filled plasticized polyvinyl chloride compositions and can be used as plasticates for making sheet materials, linoleum, “ПВХ” plastisols and other products. Polymer composition as a plastic compound for making articles includes polyvinyl chloride, a plasticiser, micromarble, wherein composition additionally contains silicon dioxide obtained from rice husks at temperatures of 400–800 °C and with particle size of 40–200 mcm, with the following ratio of components, wt.pts.: polyvinyl chloride 100, plasticiser “ЭДОС”-mixture of 1,3-dioxane derivatives, the main component of which is symmetric formal 4-methyl-4-hydroxyethyl-1,3 dioxane 70-90, micromarble PM-130 150–170, silicon dioxide 10–30.

EFFECT: technical result consists in creation of a polyvinyl chloride composition, plasticized with a product based on a mixture of dioxane alcohols and their high-boiling ethers, filled with micromarble and modified silicon-containing organic additives to improve a set of operational characteristics, namely increase in tensile strength to 116%; thermal stability by “Red congo” method up to 65% and reducing migration of plasticizer from polyvinyl chloride paste to 78%; increasing dynamic modulus of elasticity by 36% and increasing chemical resistance to water up to 60%.

1 cl, 1 tbl, 11 ex