Process for preparing 1-cyano-3H-dibenz[f,ij]isoquinoline-2,7-di

Details Process for preparing 1-cyano-3H-dibenz[f,ij]isoquinoline-2,7-di Process for preparing 1-cyano-3H-dibenz[f,ij]isoquinoline-2,7-di

1993-06-21

1994-08-23

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

524 89, 524602, 546 26, 546 76, C08G 6944, C08G 7316

Patent

active

053409108

ABSTRACT:
Provided is an improved process for the synthesis of 1-cyano-3H-dibenz[f,ij] isoquinoline-2,7-dione compounds, and process exhibiting improvements in quality of products, safety, fewer environmental concerns and economics when compared to presently known processes. The compounds are useful as colorants for polyesters, and selected compounds and when combined with small quantities of certain red colorants are particularly efficacious as blue toners for polyesters.

REFERENCES:
patent: 1891317 (1932-12-01), Peter
patent: 3459570 (1969-08-01), Serafin
patent: 4070581 (1978-01-01), Gibbons et al.
patent: 4403092 (1983-09-01), Davis et al.
patent: 4420581 (1983-12-01), McFarlane et al.
patent: 4745174 (1988-05-01), Pruett et al.
patent: 4790581 (1988-12-01), Boswell et al.

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