BUTENE-1 (CO)POLYMERS, TUBES MADE OF THEM AND METHOD FOR PREPARING BUTENE-1 (CO)POLYMERS Russian patent published in 2008 - IPC C08F10/08 C08F4/642 C08F4/656 

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to butene-1 (co)polymers and a method of their synthesis. Except for, invention relates to articles made of butene-1 (co)polymers. Homopolymers of butene-1 are characterized by the following properties: (i) value of molecular-mass partition expressed as the ratio Mw/Mn based on measurement with using analysis carried out by gel-permeation chromatography method is less 6, and (ii) strength value of melt is above 2.8 g. These homopolymers are used for making tubes. Method for synthesis of butene-1 homopolymers is carried out in the presence of a stereospecific catalyst comprising (A) a solid component containing Ti compound and internal electron-donor compounds chosen from phthalates and applied on a carrier MgCl₂; (B) alkylaluminum compound, and (C) tert.-hexyltrimethoxysilane as an external electron-donor compound. Butene-1 homopolymers possess a set of mechanical properties providing the presence both barostability after prolonged period time and their easy processing for making tubes.

EFFECT: valuable properties of (co)polymers, improved method of synthesis.

12 cl, 1 tbl, 3 ex