Indole color former

Details Indole color former Indole color former

1980-03-06

1981-08-11

Hess, Bruce H.

Textiles: manufacturing

26032615, 26032616, 427151, 428307, 428537, 428913, 428914, 430200, 430348, 430964, B41M 516, B41M 518, B41M 522

Patent

active

042830770

ABSTRACT:
Aldehyde or ketone 0-[(3-indolyl)(aryl or heteroaryl)methyl]oximes 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 aldehyde or ketone oximes in the presence of a base.

REFERENCES:
patent: 3957288 (1976-05-01), Lemahieu et al.
patent: 3995088 (1976-11-01), Garner et al.
patent: 4072690 (1978-02-01), Garner et al.
patent: 4089546 (1978-05-01), Petitpierre
patent: 4124227 (1978-11-01), Ruus

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