Patent ID: 6861486
Filing Date: 2005-03-01
Classification: C08F

Abstract:
1. A catalyst for bulk polymerization comprising an organametallic compound and a thiol, said thiol being selected from the group consisting of: alkylthiols having no functional group other than a thiol group; aromatic thiols having no functional group other than a thiol group; thiols having a functional group other than a thiol group selected from the group consisting of β-mercaptopropionic acid, mercaptoethanol, 3-mercaptopropyl (trimethoxy) silane and thiophenol; polyfunctional thiol compounds obtained by esterifying trithioglycerol or pentaerythritol with β-mercaptopropionic acid, and polmeric thiols having an active thiol group, said organometallic compound represented by the formula: wherein M 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 R 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 subtractizig 2 from the valence of metal M.