PROCESS FOR PREPARING HIGHLY POLYMERIZED AROMATIC POLYCARBONATE RESIN

摘要

The present invention provides a process for preparing a highly polymerized aromatic polycarbonate resin which not only has excellent quality such that it has high molecular weight and high fluidity, but also has more excellent heat resistance. The process of the present invention comprises a highly polymerizing step for reacting an aromatic polycarbonate prepolymer with an aliphatic diol compound of the following formula (I) having hydroxymethyl groups (HO—CH2—) each bonded to a quaternary carbon atom in the presence of a transesterification catalyst to obtain a highly polymerized aromatic polycarbonate resin:;;wherein Ra to Rf, n, and m are as defined in the present specification and claims.

主权项

1. A process for preparing a highly polymerized aromatic polycarbonate resin, which comprises a highly polymerizing step for reacting an aromatic polycarbonate prepolymer with an aliphatic diol compound of the following formula (I) having hydroxymethyl groups (HO—CH2—) each bonded to a quaternary carbon atom in the presence of a transesterification catalyst to obtain a highly polymerized aromatic polycarbonate resin: wherein each of Ra, Rb, Rc and Rd independently represents a group selected from the group consisting of an aliphatic hydrocarbon group having 1 to 30 carbon atoms and an aryl group having 6 to 30 carbon atoms, each of Re and Rf independently represents a group selected from the group consisting of a hydrogen atom and an aliphatic hydrocarbon group having 1 to 30 carbon atoms, or Ra to Rf are optionally bonded together in an arbitrary combination to form a ring, and each of n and m independently represents an integer of 0 to 10, with the proviso that when n is 1 or more, m is 1 or more.