US PATENT SUBCLASS 528 / 486
.~.~ Contacting with carboxylic acid, salt, or anhydride thereof

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
486.~.~ Contacting with carboxylic acid, salt, or anhydride thereof

DEFINITION

Classification: 528/486

(under subclass 480) Processes wherein a polymer-containing material is contacted with a carboxylic acid, a carboxylic acid salt, or a carboxylic acid anhydride.

SEE OR SEARCH THIS CLASS, SUBCLASS:

491+, for contacting in the the presence of a carboxylic acid ester or acyl halide.

SEE OR SEARCH CLASS

520, Synthetic Resins or Rubbers, see the Glossary for a definition of the term "carboxylic acid".