COMPOSITION ON THE BASIS OF POLYVINYL CHLORIDE, PIPE, CHANNEL OR CONTAINER, APPLICATION OF PVC COMPOSITION AND APPLICATION OF PIPE, CHANNEL OR CONTAINER Russian patent published in 2017 - IPC C08L27/04 C08L27/06 

FIELD: chemistry.

SUBSTANCE: invention relates to a polyvinyl chloride composition (PVC) for the manufacture of pipes, channels, containers, molded articles, and/or a welding rod, wherein the PVC resin in mentioned composition comprising a first and a second resin component has a molecular weight distribution with a number of average molecular weight by M_N = 60 kDa to M_N = 70 kD and a weight average molecular weight of M_W = 114 kDa to M_{W =} 124 kDa, and wherein the chlorine content in the entire composition is from 56% to 62%, and wherein the first resin component is unplasticized PVC and has a molecular weight distribution with a weight average molecular weight M_W from 140 kD to 154 kD and a weight average molecular weight M_N from 70 kDa to 77 kDa, the second resin component is a PVC resin component, which has a higher chlorine content than the first resin component, and has a molecular weight distribution with a weight average molecular weight M_W of 101 kDa to 113 kDa, and a number of average molecular weight M_N of 54 kDa to 63 kDa, the ratio of the first resin component to the second resin component in the composition of PVC is from 40:60 to 60:40; The composition of PVC has a Vicat softening point is above 90°C, the PVC composition does not contain impact modifiers.

EFFECT: invention provides a composition multifunctional in use in a relatively wide temperature range, excellent in resistance to chemicals, in particular to aqueous solutions of alkalis, as well as the use of these products for the transmission or storage of chemically aggressive substances.

13 cl, 3 dwg, 8 tbl