US PATENT SUBCLASS 524 / 151
.~.~.~.~.~.~.~ Two or more aryl groups

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}
115  DF  .~.~.~.~.~ Phosphorus organic compound DNRM {8}
147  DF  .~.~.~.~.~.~ Phosphorus directly bonded to oxygen {4}
151.~.~.~.~.~.~.~ Two or more aryl groups {2}
152  DF  .~.~.~.~.~.~.~>.~ OH group
153  DF  .~.~.~.~.~.~.~>.~ Triphenyl phosphite per se

DEFINITION

Classification: 524/151

Two or more aryl groups:

(under subclass 147) Subject matter wherein the phosphorus compound contains two or more aryl groups.

(1) Note. The aryl group herein may be part of a fused- or bridged-ring system, e.g., naphthalene contains two aryl groups.