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

FIELD: chemistry.

SUBSTANCE: invention relates to organometallic chemistry, in particular to novel complexes of group 8 transition metals, which are used as polymerisation catalysts of cyclic olefins, particularly dicyclopentadiene (DCPD). The catalyst is a ruthenium complex compound of general formula (1), having ligands in form of 1,3-dimesitylimidazolidinylidene, two chlorine atoms and substituted benzylidene. The substitute in the benzylidene ligand is an amino-substituted methyl group, where the amine is a di(hydroxyalkyl)amino group, as well as piperidine. The amine-containing substitute also coordinates to the ruthenium atom and forms a six-member chelate ring where X=N (Alk-OH)₂, (CH₂)₅N , where Alk is a straight saturated hydrocarbon chain containing 2 carbon atoms. The method of preparing the catalyst involves successive reaction in a single reactor of 1,3-dimesityl-4,5-dihydro-imidazolium chloride with potassium tert-butoxide, first generation Grubb's catalyst (GrI) and then amino-containing styrene.

EFFECT: simple technology of obtaining an efficient catalyst for metathesis polymerisation of dicyclopentadiene.

2 cl, 2 ex