Color-shifted dyes with thermally unstable carbamate moiety comp

Details Color-shifted dyes with thermally unstable carbamate moiety comp Color-shifted dyes with thermally unstable carbamate moiety comp

1987-12-18

1989-05-02

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Chalcogen in the nitrogen containing substituent

260389, 260390, 260395, 534741, 534742, 534887, 544 56, 544 59, 544 62, 544370, 546104, 548110, 548207, 548455, 548462, 548469, 548477, 548505, 549223, 549224, 549226, 549227, C09B 1112, C09B 1122, C09B 5700, C09B 4800

Patent

active

048269760

ABSTRACT:
This invention relates to a color-shifted dye compounds containing at least one thermally unstable carbamate moiety which are useful in thermal imaging. These compounds may be represented by the formula [M--(X).sub.q ].sub.p D wherein M is a carbamate moiety; X is --N.dbd., --SO.sub.2 -- or --CH.sub.2 --; D taken with X and M represents the radical of a color-shifted organic dye, said carbamate moiety M comprising a tert-alkoxycarbonyl group, ##STR1## wherein R' is halomethyl or alkyl.

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patent: 4380629 (1983-04-01), Yamashita et al.
Kosar, "Light-Sensitive Systems", pp. 402 to 409, John Wiley and Sons, Inc., New York (1965).

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