FUNCTIONALIZED INITIATOR OF ANIONIC COPOLYMERIZATION AND METHOD OF ITS OBTAINING, COPOLYMERS OBTAINED USING THIS INITIATOR AND RUBBER MIXTURES BASED ON FORMED COPOLYMERS Russian patent published in 2018 - IPC C08F4/08 C08F236/10 C08L9/00 C08L9/06 

FIELD: technological processes.

SUBSTANCE: invention relates to process of obtaining functionalized, nitrogen-containing organolithium initiator of anionic copolymerization. Method includes the following steps: (1) interaction in hydrocarbon solvent medium with continuous stirring of organolithium compound, secondary amine represented by general formula (I)

,

where R₁, R₂ – identical or different, aromatic or aliphatic substituents, being hydrocarbon group having from 1 to 20 carbon atoms, where R₁ can contain one secondary amino group, and nitrogen-containing electron-donor additive; and (2) adding, at constant mixing, simultaneously or in batches, two or more times to lithium amide of conjugated diene obtained in step (1) in molar ratio of 1 to 4 per 1 mole of lithium. Variant of obtaining process of functionalized nitrogen-containing organolithium initiator of anionic copolymerization, functionalized nitrogen-containing organolithium anionic initiator of anionic copolymerization, anionic copolymerization of conjugated dienes and vinyl aromatic compounds, copolymer and rubber mixture.

EFFECT: above initiator can be used in obtaining rubbers with predetermined molecular weight characteristics, microstructure, Mooney viscosity and glass transition temperature; such rubbers find application in rubber compounds demonstrating noticeable improvement in elastic-hysteresis properties, for example, rolling resistance, wet grip.

40 cl, 3 tbl, 30 ex