Patent ID: 6486262
Filing Date: 2002-11-26
Classification: C08F,G02B

Abstract:
A process for producing a hydrogenated product of an aromatic vinyl polymer by hydrogenating an aromatic vinyl polymer obtained by polymerizing an aromatic vinyl compound, the process comprisingpolymerizing the aromatic vinyl compound to synthesize an aromatic vinyl polymer having a weight average molecular weight (Mw) within a range of 100,000 to 400,000 and a ratio (Mw/Mn) of the weight average molecular weight (Mw) to a number average molecular weight (Mn) of at most 2.0, and then subjecting the aromatic vinyl polymer to a hydrogenation reaction in the presence of a hydrogenation catalyst supported on a silica-alumina carrier to obtain a hydrogenated product having the following properties: (a) the hydrogenation rate of aromatic rings being at least 97%; (b) the weight average molecular weight (Mw) being within a range of 100,000 to 300,000; and (c) the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) being at most 2.0.