US PATENT SUBCLASS 528 / 488
.~.~ Contacting with alkali (Li, Na, K, Rb, Cs, Fr) or alkaline earth (Be, Mg, Ca, Sr, Ba) metal or compound thereof

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}
488.~.~ Contacting with alkali (Li, Na, K, Rb, Cs, Fr) or alkaline earth (Be, Mg, Ca, Sr, Ba) metal or compound thereof {1}
489  DF  .~.~.~> Oxide or hydroxide

DEFINITION

Classification: 528/488

(under subclass 480) Processes wherein the polymer or polymer-containing material is contacted with a treating material which contains at least one atom of an alkali metal or alkaline earth element.

(1) Note. Alkali metal is limited to elements, Li, Na, K, Rb, Cs, Fr, Alkaline earth metal is limited to elements Be, Mg, Ca, Sr, Ba, Ra.