| 发明名称 |
Certain benzothiazolium compounds |
| 摘要 |
Novel substantially colorless dye precursors represented by the formula <IMAGE> WHEREIN R1 is hydrogen or alkyl; R2, R3 and R5 is alkyl; R4 is alkyl or phenyl; Z, taken with N, represents the atoms necessary to make a benzthiazole radical; X is an acid anion; and n is 1 when R5 carries a negative charge and 2 when R5 is electrically neutral.
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| 申请公布号 |
US4089866(A) |
申请公布日期 |
1978.05.16 |
| 申请号 |
US19760741240 |
申请日期 |
1976.11.12 |
| 申请人 |
POLAROID CORPORATION |
发明人 |
BLOOM, STANLEY M.;BORROR, ALAN L.;GREENWALD, RICHARD B. |
| 分类号 |
C07D213/38;C07D213/42;C07D215/12;C07D263/56;C07D277/64;G03C8/48;(IPC1-7):C07D277/64 |
主分类号 |
C07D213/38 |
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