The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 2010
Filed:
Feb. 16, 2007
Dae-woo Nam, Daejeon Metropolitan, KR;
Dong-ryul Kim, Daejeon Metropolitan, KR;
Hyo-sun Lee, Daejeon Metropolitan, KR;
Boong-goon Jeong, Daejeon Metropolitan, KR;
Sang-uk Ryu, Daejeon Metropolitan, KR;
Hee-jung Kim, Daejeon Metropolitan, KR;
Ju-eun Cha, Daegu Metropolitan, KR;
Dae-Woo Nam, Daejeon Metropolitan, KR;
Dong-Ryul Kim, Daejeon Metropolitan, KR;
Hyo-Sun Lee, Daejeon Metropolitan, KR;
Boong-Goon Jeong, Daejeon Metropolitan, KR;
Sang-Uk Ryu, Daejeon Metropolitan, KR;
Hee-Jung Kim, Daejeon Metropolitan, KR;
Ju-Eun Cha, Daegu Metropolitan, KR;
LG Chem, Ltd., Seoul, KR;
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.