Preparation of high dye-yield couplers and intermediates useful therein
US6172260A · kind A · utility
0Cited by
3References
16Claims
0Family size
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Key dates
| Filing date | Dec 31, 1998 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Dec 31, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/333
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a carbamyl chloride of an aminoarylcarbonyl compound having the structural formula I: ##STR1## wherein PA1 R is an alkyl, alkenyl, or aryl group; PA1 A is an aryl (including heteroaryl) ring group; PA1 each R' is independently an alkyl group which may form a ring with Z or Z'; PA1 p is 0, 1, 2, or 3; PA1 each Z, Z', and Y is independently hydrogen or a substituent; and PA1 n is 0, 1, or 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.