POLYETHYLENE-BASED GRANULATED MATERIAL, PRODUCTION PROCESS THEREOF AND USE THEREFOR FOR MANUFACTURING CABLES Russian patent published in 2018 - IPC C08L23/04 C08L23/08 C08K5/14 B29B9/00 H01B3/44 

FIELD: chemistry.

SUBSTANCE: invention relates to a polyethylene-based granulated material, production process thereof and use therefor for manufacturing cables. Granulated material comprises (a) from 70 to 95 % by weight of at least one ethylene homopolymer or copolymer of ethylene with at least one alpha-olefin C₃-C₁₂, having a density from 0.910 to 0.926 g/cm³, (b) from 2 % to 25 % by weight of at least one polymer selected from (b1) copolymers of ethylene with at least one alpha-olefin C₃-C₁₂, having a density from 0.860 to 0.905 g/cm³ and a molecular weight distribution index (MWDI) not greater than 4, (b2) copolymers of ethylene with at least one ester having one ethylenic unsaturation, and (c) from 0.1 % to 7 % by weight of at least one organic peroxide.

EFFECT: obtained granulated material allows to considerably reduce exudation of the peroxide and of possible other additives, in particular following prolonged exposure to extreme ambient temperatures; moreover, the impregnation times of the granulated material with the peroxide are substantially shortened, so as to increase the productivity and reduce processing costs.

19 cl, 4 tbl, 5 ex