发明名称 |
Preparation of a photochromic ink |
摘要 |
<p>The present invention relates to a photochromic ink, the process for its preparation which is based on a spiropyran powder obtainable by melting, cooling and crushing, and to a new form of a spiropyran obtainable thereby. Said process to prepare a photochromic ink comprises the steps of a) heating and melting the spiropyran at a temperature below 250 C, b) cooling the melt to obtain a solidified spiropyran, c) crushing the solidified spiropyran to obtain a powder, d) optionally adding the powder to a binder providing the basis for the photochromic ink.</p> |
申请公布号 |
AU2009336680(A1) |
申请公布日期 |
2011.07.28 |
申请号 |
AU20090336680 |
申请日期 |
2009.12.23 |
申请人 |
BASF SE |
发明人 |
MAURER, MARC;HUGIN, MAX;RAIMANN, THOMAS;FEILER, LEONHARD;INDERBITZIN, BRUNO;FUCHS, ANDRE |
分类号 |
C09D11/00;C07D491/107;C09K9/02 |
主分类号 |
C09D11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|