THERMOPLASTIC COMPOSITION Russian patent published in 2023 - IPC C08L23/04 C08L23/10 C08L23/12 C08L23/14 C08L23/16 C08K5/98 C08K5/52 

FIELD: thermoplastic production.

SUBSTANCE: group of inventions is related to extrusion compositions for the manufacturing of final products, containing at least one resin selected from the group consisting of polypropylene homopolymers, polypropylene random copolymers and polypropylene impact copolymers, or at least one polyethylene resin. The extrusion composition also contains at least one phosphoric acid ester-based crystallization nucleating agent containing an aluminium salt of a phosphoric acid ester or a sodium salt of a phosphoric acid ester in combination with lithium myristate and an auxiliary additive containing block copolymers based on ethylene oxide and propylene oxide, or a nucleating agent based on a salt of benzoic acid selected from the group of sodium benzoate, lithium benzoate and mixtures thereof in combination with an auxiliary additive based on ethylene oxide and propylene oxide.

EFFECT: obtaining a polyolefin containing crystallization nucleating agents, which also exhibits good thermal and optical properties, along with improved mechanical properties, such as rigidity.

16 cl, 33 tbl, 11 ex