US PATENT SUBCLASS 528 / 487
.~.~ Contacting with sulfur or phosphorus-containing material

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
480  DF  .~ TREATING POLYMER CONTAINING MATERIAL OR TREATING A SOLID POLYMER OR A RESINIFIABLE INTERMEDIATE CONDENSATION PRODUCT {14}
487.~.~ Contacting with sulfur or phosphorus-containing material

DEFINITION

Classification: 528/487

(under subclass 480) Processes wherein the polymer or polymer-containing material is contacted with a material containing a phosphorus or sulfur atom.