Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Dong-Ryul Kim0
Hyo-Sun Lee0
Hee-Jung Kim0
Sang-Uk Ryu0
Ju-Eun Cha0
Boong-Goon Jeong0
Dae-Woo Nam0
Date of Patent
June 15, 2010
0Patent Application Number
122235910
Date Filed
February 16, 2007
0Patent Primary Examiner
Patent abstract
The present invention relates to a process for preparing polyarylate, and more specifically, to a process for preparing polyarylate by interfacial polymerization of a bivalent phenol compound and an aromatic dicarboxylic acid or a halide thereof, which comprises mixing a cationic catalyst for the phase transition and a nonionic surfactant in a predetermined ratio, to further increase the yield of polyarylate, as compared with the case of using each of the nonionic surfactant and the cationic catalyst for the phase transition alone.
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