POLYOLEFIN-BASED SEMI-CRYSTALLINE SUPERCONCENTRATE COMPOSITION Russian patent published in 2022 - IPC C08J3/22 C08L23/26 C08K5/15 C09D123/26 C09D7/63 H01B3/00 

FIELD: chemical or physical processes.

SUBSTANCE: present invention relates to a group of inventions: a superconcentrate composition of an additive for producing a moisture-curable polyolefin composition, moisture-curable polyolefin composition for articles, a method of making a moisture-curable polyolefin composition, a moisture-cured polyolefin composition for articles, a manufactured article, coated conductor and method of conducting electricity. Superconcentrated additive composition contains a semi-crystalline polyolefin polymer carrier and a set of additives, containing a reaction product of an acidic condensation catalyst and secondary diarylamine (R¹-Ar)₂NH. Semi-crystalline polyolefin polymer carrier is 50–99 wt. %, and the set of additives is 1–50 wt. % of total weight of said composition of superconcentrate additive. Additive superconcentrate composition does not contain an ethylene-silane copolymer. Semi-crystalline polyolefin polymer carrier has degree of crystallinity from 50 to less than 100 wt. %. Acid condensation catalyst is an alkyl-substituted aryl sulphonic acid with 1 or 2 (C₅-C₂₀)alkyl substitutes and 1 aromatic group, which is phenyl or naphthyl. Moisture-curable polyolefin composition contains a molded part, containing a superconcentrate composition of an additive and a polyolefin prepolymer with hydrolysable silyl functional groups. In the polyolefin prepolymer, each hydrolysable silyl group is independently a monovalent group: (R²)_m(R³)_3-mSi(C₂-C₆)alkenyl. Method of making a moisture-curable polyolefin composition involves mixing a polyolefin prepolymer with hydrolysable silyl functional groups and a ground solid form of the additive superconcentrate composition to produce a mixture; and melting or extruding said mixture to produce a moisture-curable polyolefin composition. Moisture-cured polyolefin composition contains a molded part, which is a product of moisture-cured polyolefin composition.

EFFECT: creation of compositions of superconcentrate additives, which are not subject to phase separation and release of additives, which leads to reduction of their stickiness.

12 cl, 3 tbl, 5 ex