US PATENT SUBCLASS 524 / 88
.~.~.~.~.~.~.~ Tetrabenzoporphyrazine nucleus containing, e.g., phthalocyanine, etc.

Current as of: June, 1999
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524 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
*  DD  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF (Class 523, subclass 1) {17}
1  DF  .~.~ Adding a NRM to a preformed solid polymer or preformed specified intermediate condensation product, composition thereof; or process of treating or composition thereof {31}
80  DF  .~.~.~ DNRM which is other than silicon dioxide, glass, titanium dioxide, water, halohydrocarbon, hydrocarbon, or elemental carbon {4}
81  DF  .~.~.~.~ Organic DNRM {21}
86  DF  .~.~.~.~.~ Nitrogen atom as part of a hetero ring DNRM {5}
87  DF  .~.~.~.~.~.~ Nitrogen ring directly fused or bridged to a ring system {5}
88.~.~.~.~.~.~.~ Tetrabenzoporphyrazine nucleus containing, e.g., phthalocyanine, etc.

DEFINITION

Classification: 524/88

Tetrabenzoporphyrazine nucleus containing, e.g., phthalocyanine, etc:

(under subclass 87) Subject matter wherein the fused or bridged nitrogen ring system contains a tetrabenzoporphyrazine nucleus (four benzopyrrole nuclel joined by four nitrogen atoms, e.g., phthalocyanine pigment [figure]