参考文献

GRÜNENTHAL GMBH; FRANK, Robert; CHRISTOPH, Thomas; DAMANN, Nils; LESCH, Bernhard; BAHRENBERG, Gregor; SAUNDERS, Derek John; STOCKHAUSEN, Hannelore; KIM, Yong-Soo; KIM, Myeong-Seop; LEE, Jeewoo Patent: WO2013/68467 A1, 2013 ; Location in patent: Page/Page column 65; 66 ;