US PATENT SUBCLASS 540 / 123
.~.~.~.~ Hetero ring attached directly or indirectly to the phthalocyanine ring system by nonionic bonding

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540 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS {6}
121  DF  .~.~ Azaporphyrins {1}
122  DF  .~.~.~ Phthalocyanines {8}
123.~.~.~.~ Hetero ring attached directly or indirectly to the phthalocyanine ring system by nonionic bonding {2}
124  DF  .~.~.~.~.~> The hetero ring is six-membered having nitrogen as a ring member {1}
127  DF  .~.~.~.~.~> The hetero ring is five-membered having plural hetero atoms, at least one of which is nitrogen

DEFINITION

Classification: 540/123

(under subclass 122) Compounds wherein an additional hetero ring is attached directly or indirectly to the phthalocyanine ring system by nonionic bonding.

(1) Note. Examples of compounds provided for herein are: poly (copper phthalocyanine (see structure below) wherein CuPc is a copper phthalocyanine radical. [figure]