Process for preparing hydroxymetal phthalocyanine pigment

Details Process for preparing hydroxymetal phthalocyanine pigment Process for preparing hydroxymetal phthalocyanine pigment

1993-10-05

1994-11-01

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106413, 540128, 540139, 540140, 540141, C09B 6750

Patent

active

053604750

ABSTRACT:
A process for preparing a hydroxymetal phthalocyanine pigment containing a central metal atom selected from aluminum, gallium, indium, silicon, germanium and tin and having a novel crystal form is disclosed, comprising treating a precursor of a hydroxymetal phthalocyanine pigment with an acid and treating the precipitated hydroxymetal phthalocyanine pigment with a solvent under an acidic condition. The resulting hydroxymetal phthalocyanine pigment includes hydroxygallium crystals showing distinct diffraction peaks at Bragg angles (2.theta..+-.0.2.degree.) of (1) 8.2.degree., 12.4.degree., 16.5.degree. and 26.3.degree. or (2) 6.8.degree., 12.5.degree. and 26.4.degree.. The resulting hydroxymetal phthalocyanine pigment exhibits high photosensitivity and excellent stability as a charge generating material of an electrophotographic photoreceptor.

REFERENCES:
patent: 2770629 (1956-11-01), Eastes
patent: 3160635 (1964-12-01), Knudsen et al.
patent: 3357989 (1967-12-01), Byrne et al.
patent: 3708292 (1973-01-01), Brach et al.
Colaitis; Bull. Soc. Chim., France, No. 23 (1962) pp. 23-26 no month.
Linsky et al.; Inorganic Chemistry, vol. 19, No. 10, 1980, "Studies of a Series of Haloaluminum, -gallium, and -indium Phthalocyanines"; pp. 3131-3135 no month.

Affiliated with

Also associated with

Rating

Process for preparing hydroxymetal phthalocyanine pigment does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing hydroxymetal phthalocyanine pigment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing hydroxymetal phthalocyanine pigment will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1800140