| 摘要 |
The present invention relates to a sulfur-containing polyureaurethane and a method of preparing said polyureaurethane. In an embodiment, the sulfur-containing polyureaurethane 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 grams/cm<SUP>3</SUP>, when at least partially cured. |
