US PATENT SUBCLASS 528 / 303
.~.~.~.~ Ethylenically unsaturated carboxylic acid or ethylenically unsaturated derivative

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}
302  DF  .~.~.~ Two or more carboxylic acid or derivatives or mixtures thereof {2}
303.~.~.~.~ Ethylenically unsaturated carboxylic acid or ethylenically unsaturated derivative {1}
304  DF  .~.~.~.~.~> Aryl-containing carboxylic acid or derivative of an aryl-containing carboxylic acid

DEFINITION

Classification: 528/303

(under subclass 302) Subject matter wherein at least one carboxylic acid reactant contains ethylenic unsaturation, or wherein at least a derivative of a carboxylic acid contains ethylenic unsaturation.

SEE OR SEARCH CLASS

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