METHOD OF PRODUCING CATALYST FOR (CO) Russian patent published in 2011 - IPC C08F36/06 C08F136/06 B01J37/04 B01J23/10 C08F4/52 

FIELD: chemistry.

SUBSTANCE: described is a method of producing a catalyst for (co)polymerisation of butadiene by reacting components comprising triazobutylaluminium, conjugated diene and a rare-earth element compound, holding the reaction mass, followed by addition of diisobutylaluminium hydride and alkylaluminium chloride. The alkylaluminium chloride is added in a mixture with triisobutylaluminium in molar ratio 1:1. The process is carried out in molar ratio triisobutylaluminium: conjugated diene: rare-earth element compound: diisobutylaluminium hydride: alkylaluminium chloride (in terms of Cl) equal to 6-12:1-20:1:6-12:1.5-1.7.

EFFECT: method enables synthesis of a highly-efficient catalyst for polymerisation of butadiene in order to produce polymers with narrow molecular weight distribution and low content of high-molecular fractions, which simplifies the technology of producing rubber, improves said rubber properties and widens the field of use.

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