LATE-ADDITION CATALYST FORMULATION, REACTOR SYSTEM, AND METHOD FOR PRODUCING POLYCARBONATE
申请人:Garcia Agudo Jorge A.
公开号:US20140228526A1
公开(公告)日:2014-08-14
The present invention provides a melt polymerization reactor system and method of producing polycarbonate using a late-addition catalyst formulation having a melt transesterification catalyst dispersed in a liquid carrier system which preferably includes less than 10 wt % water. The formulation also preferably includes a liquid carrier system having phenol and a cosolvent. The melt transesterification catalyst can be present in the formulation in a range of 50 ppm to 60,000 ppm.