The present invention relates to a sulfur-containing polyureaurethane and a method of preparing said polyureaurethane. The sulfur-containing polyureaurethane is adapted to have a refractive index of at least 1.57, an Abbe number of at least 32 and a density of less than 1.3 g/cm 3 , when at least partially cured.
申请公布号
EP2325234(B1)
申请公布日期
2017.03.29
申请号
EP20110001941
申请日期
2003.12.03
申请人
PPG Industries Ohio, Inc.
发明人
Bojkova, Nina V.;McDonald, William H.;Graham, Marvin J.;Okoroafor, Michael O.;Rao, Chandra Bhushan;Smith, Robert A.;Herold, Robert D.;Nagpal, Vidhu J.;Yu, Phillip C.;Sawant, Suresh
