Patent ID: 6489412
Filing Date: 2002-12-03
Classification: C08F

Abstract:
A polymerization method comprising effecting a bulk polymerization of a monomer having a polymerizable unsaturated bond in the presence of a catalyst for bulk polymerization comprising an organometallic compound and a thiol, said organometallic compound represented by the formula: whereinM represents a metal selected from the. group consisting of metals of Groups 4A, 4B, 5A and 5B of the periodic table, chromium, ruthenium and palladium; each of R1 and R2 independently represents at least one group selected from the group consisting of an unsubstituted or substituted aliphatic hydrocarbon group, an unsubstituted or substituted alicyclic hydrocarbon group, an unsubstituted or substituted aromatic hydrocarbon group and an unsubstituted or substituted silicon containing group, a hydrogen atom or a single bond, provided that R1 and R2 may cooperate with each other to bond the two 5-membered ring shown in the formula and provided that neighboring groups of R1 or R2 may cooperate with each other to form a cyclic structure; each of a and b independently is an integer of 1 to 4; X represents a halogen atom or a hydrocarbon group optionally having at least one of hydrogen atoms thereof substituted with a halogen atom; and n is 0 or an integer subtracting 2 from valence of metal M.