| 发明名称 |
Sulfam(na)phthaleins |
| 摘要 |
This invention relates to phenol sulfam(na)phthaleins possessing a 2-(2'-halomethylbenzoyl) group substituted on the N atom of the sulfam(na)phthalein ring, which compounds find utility as photographic optical filter agents and filter agent precursors.
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| 申请公布号 |
US4231929(A) |
申请公布日期 |
1980.11.04 |
| 申请号 |
US19770836005 |
申请日期 |
1977.09.23 |
| 申请人 |
POLAROID CORPORATION |
发明人 |
BLOOM, STANLEY M.;BORROR, ALAN L.;FOLEY, JAMES W. |
| 分类号 |
C07D275/06;C07D455/04;G03C1/83;G03C8/48;(IPC1-7):C07D275/06;C07D417/10;C07D279/02;C09B17/04 |
主分类号 |
C07D275/06 |
| 代理机构 |
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代理人 |
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