US PATENT SUBCLASS 560 / 180
.~.~.~.~ Polycarboxylic acid

Current as of: June, 1999
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560 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {17}
1  DF  .~ Carboxylic acid esters {14}
129  DF  .~.~ Acyclic acid moiety {9}
179  DF  .~.~.~ Oxy in acid moiety {8}
180.~.~.~.~ Polycarboxylic acid {2}
181  DF  .~.~.~.~.~> Unsaturation in acid moiety
182  DF  .~.~.~.~.~> Polyoxy alcohol moiety

DEFINITION

Classification: 560/180

Polycarboxylic acid:

(under subclass 179) Compounds wherein the acid radical contains more than one carboxyl group, at least one of which is esterified.

(1) Note. This subclass also contains compounds wherein an unesterified carboxyl may appear in free acid form or has been converted into a salt or acid halide. Where the carboxyl group has been converted into an amide, the compound is classified in subclasses 155+.

(2) Note. This subclass contains, for example: [figure] [figure]