Bislactones

Details Bislactones Bislactones

1994-08-31

1995-11-21

Ivy, C. Warren

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

Organic compounds

Chalcogen in the nitrogen containing substituent

544150, 544359, 549265, 503220, 546187, 546197, 548517, C07D41700, C07D40500, C07D30783

Patent

active

054688558

ABSTRACT:
The invention relates to bislactone color formers having improved fastness to sublimation and migration stability, to their preparation, to pressure-sensitive and heat-sensitive recording materials containing said compounds and to their preparation. The novel bislactones have the formula (1) as defined in claim 1.

REFERENCES:
patent: 3715226 (1973-02-01), Lin
patent: 3925416 (1975-12-01), Akamatsu et al.
patent: 4012419 (1977-03-01), Vincent et al.
patent: 4938763 (1990-07-01), Dunn et al.
Chemical Abstracts, vol. 111, No. 18 Oct. 30,1989, Columbus, Oh., U.S. abstracts No. 16430x.
Derwent Abstract 93-137117/17 af J.P. 05070701 Mar. 1993.

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