FIELD: chemistry.
SUBSTANCE: invention relates to catalysis and preparation of dicyclopentadiene polymerisation catalysts. Described is a polymerisation catalyst having the formula: 
The structure of the catalyst employs a fundamentally new L substitute which gives the catalyst new properties. Described is a method of producing the catalyst by reacting a ruthenium triphenylphosphine complex with 1,1-diphenyl-2-propyn-1-ol in tetrahydrofuran or dioxane at boiling point of the solvent in an inert atmosphere, and then with tricyclohexylphosphine at room temperature in an inert atmosphere; the formed ruthenium indenylidene complex is separated and then successively reacted with 1,3-bis-(2,4,6-trimethylphenyl)-2-trichloromethylimidazolidine and the corresponding 2-vinylbenzylamine to form the end product.
EFFECT: high output of the catalyst and obtaining polydicyclopentadiene with improved application properties.
3 cl, 26 ex
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