Hydroxygermanium phthalocyanine processes

Details Hydroxygermanium phthalocyanine processes Hydroxygermanium phthalocyanine processes

1993-08-12

1995-01-17

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Process of making radiation-sensitive composition

540141, G03G 506, C09B 6750

Patent

active

053824938

ABSTRACT:
A process for the preparation of Type II dihydroxygermanium phthalocyanine which comprises treating dihalogermanium phthalocyanine or dialkoxygermanium phthalocyanine with a strong acid, followed by treatment with water, and subsequent optional washing with an organic base and an aprotic organic solvent.

REFERENCES:
patent: 4031109 (1977-06-01), Griffiths et al.
patent: 4032339 (1977-06-01), Grushkin et al.
patent: 4555463 (1985-11-01), Hor et al.
patent: 4557989 (1985-12-01), Branston et al.
patent: 4587189 (1986-05-01), Hor et al.
patent: 5189156 (1993-02-01), Mayo et al.

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