PROPYLENE-POLYMER COMPOSITION WITH NUCLEATING AGENTS OF CRYSTALLISATION Russian patent published in 2020 - IPC C08L23/12 

FIELD: chemistry.

SUBSTANCE: invention relates to a propylene-polymer composition with crystallisation nuclei suitable for making films and having an optimum set of properties, in particular improved weldability. Disclosed is a propylene-polymer composition with nucleating agents for preparing a film with high weldability, comprising a propylene-polymer composition containing from 77 wt. % to 91 wt. % of propylene homopolymer, from 9 wt. % to 23 wt. % of propylene copolymer and 0.1 wt. % of crystallisation nucleating agent selected from a group consisting of aromatic or aliphatic carboxylic acids, aromatic metal phosphate compounds, sorbitol derivatives and talc, wherein the amount of the nucleating agent of crystallisation is specified relative to the total weight of the propylene-polymer composition with nucleating agents of crystallisation.

EFFECT: achieving improved properties, especially with respect to weldability, owing to use of a special class of the propylene-polymer composition with nucleating agents of crystallisation.

8 cl, 2 tbl, 1 ex