Systems employing indole color formers

Details Systems employing indole color formers Systems employing indole color formers

1980-03-06

1982-07-27

Hess, Bruce H.

Textiles: manufacturing

26032612R, 26032615, 427151, 4283204, 4283206, 428488, 428537, 428913, 428914, B41M 516, B41M 518, B41M 522

Patent

active

043414028

ABSTRACT:
3-[(Substituted-amino)(aryl or heteroaryl)methyl]-1H-indoles which are useful as color-formers in pressure-sensitive carbonless duplicating systems and thermal marking systems are prepared by reacting 3-[(arylsulfonyl)(aryl or heteroaryl)methyl]-1H-indoles with amines or precursors thereof in the presence of a base.

REFERENCES:
patent: 3637748 (1972-01-01), Psaar et al.
patent: 3957288 (1976-05-01), Lemahieu et al.
patent: 3958815 (1976-05-01), Poot et al.
patent: 3995088 (1976-11-01), Garner et al.
patent: 4072690 (1978-02-01), Garner et al.

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