KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY; LG LIFE SCIENCES LTD.; LEE, Sun Kyung; SONG, Jong Whan; LIM, Dong Chul; CHO, Woo Young; PARK, Chul Min Patent: WO2011/162562 A2, 2011 ; Location in patent: Page/Page column 152-153 ; WO 2011/162562 A2