MULTIMODAL POLYMER Russian patent published in 2013 - IPC C08F10/02 C08F297/08 C08L23/04 F16L9/12 

FIELD: chemistry.

SUBSTANCE: invention relates to cross-linked multimodal polyethylene. Described is cross-linked polyethylene, which includes multimodal ethylene polymer with density less than 950 kg/m³, obtained by polymerisation in presence of catalyst with one active centre. Polymer has MFR₂₁ from 10 to 20 g/10 min. Index of viscosity reduction in shifting of TVR_2.7/210 is at least 4. Also described is application of multimodal ethylene polymer in production of cross-linked pipe and method of multimodal ethylene polymer obtaining.

EFFECT: obtaining good workability and essential cross-linking in one and the same polymer.

15 cl, 3 tbl, 2 ex