MODIFIED POLYMER BASED ON CONJUGATED DIENE AND RUBBER COMPOSITION CONTAINING IT Russian patent published in 2022 - IPC C08F236/04 C08F236/10 C08C19/25 C08L9/06 C08K3/36 B60C1/00 

FIELD: chemistry.

SUBSTANCE: present invention relates to modified polymer based on conjugated diene, as well as to a composition for an element of a tire or rubber products, containing modified polymer based on conjugated diene. Modified polymer based on conjugated diene has a unimodal shape of a molecular-weight distribution curve according to gel-penetrating chromatography and molecular-weight distribution from 1.0 to less than 1.7. The specified polymer contains a functional group obtained from a modification initiator at one end and a functional group obtained from a modifier. The modification initiator is a product of a reaction of a compound

and a metal-organic compound. The modifier is a compound of formulas

Or

.

EFFECT: modified polymer based on conjugated diene, obtained by continuous polymerization has excellent recyclability and excellent physical properties, such as mechanical properties during stretching and viscoelastic properties.

12 cl, 5 dwg, 5 tbl, 7 ex