US PATENT SUBCLASS 528 / 300
.~.~.~ Polyhydroxy-containing compound or salt thereof having an ether-oxygen atom as reactant

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}
271  DF  .~ FROM CARBOXYLIC ACID OR DERIVATIVE THEREOF {10}
272  DF  .~.~ From di- or higher ester of a polycarboxylic acid as sole reactant, or from a polycarboxylic acid or derivative with a compound containing two or more hydroxyl groups or salts thereof {15}
300.~.~.~ Polyhydroxy-containing compound or salt thereof having an ether-oxygen atom as reactant {1}
301  DF  .~.~.~.~> Acyclic ether-oxygen compound

DEFINITION

Classification: 528/300

(under subclass 272) Subject matter wherein a reactant containing two or more hydroxyl groups or a salt thereof contains at least one ether oxygen atom.

SEE OR SEARCH CLASS

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