| 发明名称 |
RECORDING ELEMENT HAVING A PYRYLIUM OR THIOPYRYLIUM- SQUARYLIUM DYE LAYER AND NEW PYRYLIUM OR THIOPYRYLIUM -SQUARYLIUM COMPOUNDS |
| 摘要 |
<p>16 Novel alklpyrylium-squarylium compounds which correspond to the formula < IMG > wherein X is an oxygen atom or a sulphur atom, R is an alkyl group having at least 3 carbon atoms, and R1 is a hydrogen atom or a methyl group as well as a recording element having a recording layer comprising such a novel compound.</p> |
| 申请公布号 |
CA1217197(A) |
申请公布日期 |
1987.01.27 |
| 申请号 |
CA19840445168 |
申请日期 |
1984.01.12 |
| 申请人 |
N.V.PHILIPS'GLOEILAMPENFABRIEKEN |
发明人 |
GRAVESTEIJN, DIRK J.;STEENBERGEN, CHRISTIAAN;VAN DER VEEN, JAN;NIJSSEN, WILHELMUS P.M. |
| 分类号 |
G11B7/24;B41M5/26;C09B23/00;C09B23/01;C09B23/16;C09B57/00;G11B7/244;G11B7/246;(IPC1-7):C09B57/00;G03C1/72 |
主分类号 |
G11B7/24 |
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