发明名称 |
METHOD FOR PREPARING A THERMOPLASTIC POLYURETHANE OF IMPROVED YELLOWNESS INDEX, AND OPTICAL ARTICLES MADE THEREFROM |
摘要 |
<p>Method for converting a composition into thermoplastic polyurethane, said composition comprising polyurethane resin, said method comprising the steps of combining the composition with a chemical compound, and converting said mixture into thermoplastic polyurethane, characterized in that said chemical compound is 1,4-Di(2,6-dibromo-4-methylphenylamino)anthracene-9,10-dione. Article obtained according to this method.</p> |
申请公布号 |
EP2576678(B1) |
申请公布日期 |
2015.12.02 |
申请号 |
EP20100722445 |
申请日期 |
2010.05.27 |
申请人 |
ESSILOR INTERNATIONAL (COMPAGNIE GÉNÉRALE D'OPTIQUE) |
发明人 |
CHIU, HAO-WEN;GOU, ZEMING |
分类号 |
C08K5/00;C08K5/03;G02B1/04 |
主分类号 |
C08K5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|