05773181 is referenced by 14 patents and cites 31 patents.

Phthalocyanine compositions and prepartion methods. In a method, first, a phthalocyanine mixture is synthesized that has a plurality of differently substituted phthalocyanines selected from the group consisting of compounds having the general structure: ##STR1## M represents a pair of hydrogen atoms or a covalent or coordinate bonded moiety including a metal atom. Each T substituent is independently selected from the group consisting of H, F, Cl, Br, I, and alkyl having from 1 to 18 carbons. There are at least two different T substituents. The smallest T substituent has a van der Waal's radius that differs from the radius of the largest T substituent by less than about 50 percent of the radius of the smallest substituent. The amorphousness of the phthalocyanine mixture is then imcreased. The amorphous mixture is then contacted with organic solvent having a gamma.sub.c hydrogen bonding parameter of less than 8.0. Prior to the contacting, the amorphous mixture is excluded from contact with organic solvent having a gamma.sub.c hydrogen bonding parameter greater than 9.0.

Title
Non-uniformly substituted phthalocyanine compositions preparation methods, and electrophotographic elements
Application Number
8/448056
Publication Number
5773181
Application Date
May 23, 1995
Publication Date
June 30, 1998
Inventor
William Tod Gruenbaum
Rochester
NY, US
Jeanne Ellen Kaeding
Rochester
NY, US
Michel F Molaire
Rochester
NY, US
Agent
Robert Luke Walker
Assignee
Eastman Kodak Company
NY, US
IPC
G03G 5/06
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