STABILIZED MOISTURE-CURABLE POLYMER COMPOSITIONS Russian patent published in 2020 - IPC C08K5/00 C08K5/13 C08K5/1545 H01B3/30 H01B3/44 H01B7/18 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to silane-crosslinkable polymer compositions containing a polyolefin, which contains hydrolysable silane groups, acid catalyst of silanol condensation and phenol antioxidant. Described is a silane cross-linkable polymer composition for insulating coatings, comprising: a polyolefin containing hydrolysable silane groups, wherein said polyolefin containing hydrolysable silane groups is an ethylene homopolymer containing hydrolysable silane grafted on its skeleton; acid catalyst of silanol condensation; and a phenolic antioxidant having the following structure:

,

where each of R1, R2, R3 and R4 independently represents hydrogen or an aliphatic moiety containing 1 to 8 carbon atoms, where R5 is an aliphatic moiety containing 10 to 20 carbon atoms; additionally containing thioester, functionalised with ester. Coated conductor is also described.

EFFECT: improved operational characteristics of material.

6 cl, 2 tbl