RUTHENIUM CATALYST FOR METATHESIS POLYMERISATION OF DICYCLOPENTADIENE (VERSIONS) AND METHOD OF PRODUCING POLYDICYCLOPENTADIENE (VERSIONS) Russian patent published in 2011 - IPC C08F4/80 B01J31/18 C07F15/00 B01J23/46 C08F32/00 C08G61/08 C08K5/56 

FIELD: chemistry.

SUBSTANCE: invention relates to novel complexes of group 8 transition metals, which are used as polymerisation catalysts for cyclic olefins, particularly dicyclopentadiene (DCPD). Described is a catalyst for metathesis polymerisation of dicyclopentadiene which is a ruthenium complex compound, having ligands in form of 1,3-bis-(2,6-dimethylphenyl)-2-imidazolidinylidene, two chromium atoms and ortho-substituted benzylidene. The substitute in the benzylidene ligand is an amino-substituted methyl group, where the amine is a dialkylamino-, di(2-hydroxyethyl)amino-, alkylphenylamino-group, as well as cyclic amines, particularly piperidine and morpholine; the catalyst has general formula: , where X=(Alk)₂N, N(CH₂-CH₂-OH)₂, piperidine, morpholine, NAlkPh; Alk=CH₃, C₂H₅; Ph is phenyl. Described also is a catalyst for metathesis polymerisation of dicyclopentadiene, which is a ruthenium complex compound having ligands in form of 1,3-bis-(2,4,6-trimethylphenyl)-2-imidazolidinylidene, two chromium atoms and ortho-substituted benzylidene. The substitute in the benzylidene ligand is an alkylphenylamino-substituted methyl group. The catalyst has general formula: Alk=CH₃, C₂H₅; Ph=phenyl. The invention describes methods of producing polydicyclopentadiene, involving polymerisation of dicyclopentadiene in the presence of the described catalysts, as well as catalysts which are compounds of [1,3-bis-(2,4,6-trimethylphenyl)-2-imidazolidinylidene]dichloro(2-(N,N-bis(2-hydroxyethyl)aminomethyl)benzylidene)ruthenium or a compound of [1,3-bis-(2,4,6-trimethylphenyl)-2-imidazolidinylidene]dichloro(o-9piperidin-1-ylmethyl)benzylidene)ruthenium with molar ratio of monomer: catalyst ranging from 70000:1 to 250000:1.

EFFECT: reduced unit consumption of catalyst, which leads to low cost of polydicyclopentadiene, possibility of controlling the starting time of the polymerisation process.

5 cl, 9 ex