US PATENT SUBCLASS 521 / 34
.~.~.~ Solid polymer derived from at least one 1,2-epoxy containing reactant

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

Internet Version by PATENTEC © 1999      Terms of Use


521 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {3}
25  DF  .~ ION-EXCHANGE POLYMER OR PROCESS OF PREPARING {7}
30  DF  .~.~ Chemically treated solid polymer {3}
34.~.~.~ Solid polymer derived from at least one 1,2-epoxy containing reactant

DEFINITION

Classification: 521/34

(under subclass 30) Subject matter wherein the solid polymer is derived from a 1, 2-epoxy-containing reactant.

(1) Note. Included in this class are alkylene oxides, epichlorhydrin and derivatives thereof.