US PATENT SUBCLASS 540 / 144
.~.~.~.~.~.~.~ From reactant which contains plural carbonyl groups (e.g., preparing from phthalic anhydride, etc.)


Current as of: June, 1999
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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}
139  DF  .~.~.~.~ Metal containing {1}
140  DF  .~.~.~.~.~ Heavy metal or aluminum containing {2}
142  DF  .~.~.~.~.~.~ Processes of forming the phthalocyanine ring system {2}
144.~.~.~.~.~.~.~ From reactant which contains plural carbonyl groups (e.g., preparing from phthalic anhydride, etc.)


DEFINITION

Classification: 540/144

(under subclass 142) Processes wherein the phthalocyanine ring system is prepared from a reactant which contains plural carbonyl groups.