Process for preparing squaraines

Details Process for preparing squaraines Process for preparing squaraines

1986-05-02

1987-05-12

Shaver, Paul F.

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

Organic compounds

Amino nitrogen containing

C07C 8500, C07C 8502, C07C 8506

Patent

active

046652310

ABSTRACT:
A process for forming finely divided squaraine particles is disclosed comprising dissolving squaraine material in an organic base selected from the group consisting of primary organic amines and secondary organic amines, neutralizing the organic base with an acid selected from the group consisting of organic acids and inorganic acids thereby precipitating the squaraine material as finely divided particles in a liquid medium, and separating the finely divided particles from the liquid medium.

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patent: 4521621 (1985-06-01), Yanus et al.
patent: 4523035 (1985-06-01), Yanus
patent: 4524218 (1985-06-01), Branyi et al.
patent: 4524219 (1985-06-01), Law
patent: 4524220 (1985-06-01), Law
patent: 4525592 (1985-06-01), Law et al.
patent: 4552822 (1985-11-01), Kazmaier et al.
patent: 4585884 (1986-04-01), Lin et al.
patent: 4585895 (1986-04-01), Law

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