US PATENT SUBCLASS 516 / 185
.~.~.~.~.~.~ The compound contains carboxylic acid ester group (e.g., lactone, natural (glyceride) oil, oxyalkylated 'blown fatty acid'*)


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516 /   HD   COLLOID SYSTEMS AND WETTING AGENTS; SUBCOMBINATIONS THEREOF; PROCESSES OF

113  DF  COMPOSITIONS CONTAINING AN AGENT FOR BREAKING (RESOLVING) OR INHIBITING COLLOID SYSTEMS; PROCESSES OF BREAKING (RESOLVING) OR INHIBITING COLLOID SYSTEMS (E.G., GEL BREAKING OR INHIBITING, COAGULATING, FLOCCULATING); PROCESSES OF PREPARING THE COMPOSITIONS {3}
135  DF  .~ Continuous liquid phase colloid system and discontinuous liquid phase (e.g., breaking an emulsion) {4}
139  DF  .~.~ The agent contains material which is different from the primary components of both liquid phases of the emulsion colloid system (i.e., more than only diluting) {2}
141  DF  .~.~.~ Aqueous-petroleum, petroleum-aqueous, aqueous-hydrocarbon, or hydrocarbon-aqueous emulsion systems {2}
143  DF  .~.~.~.~ The agent contains organic compound {5}
181  DF  .~.~.~.~.~ The compound contains oxygen (e.g., cresylic acid) {5}
185.~.~.~.~.~.~ The compound contains carboxylic acid ester group (e.g., lactone, natural (glyceride) oil, oxyalkylated 'blown fatty acid'*) {2}
186  DF  .~.~.~.~.~.~.~> The compound contains -C(=O)OH or salt thereof (e.g., partial ester, fractional ester, 'blown fatty acid'*) {1}
189  DF  .~.~.~.~.~.~.~> The compound contains ether group


DEFINITION

Classification: 516/185

The compound contains carboxylic acid ester group (e.g., lactone, natural (glyceride) oil, oxyalkylated blown fatty acid *):

(under subclass 181) Subject matter in which the organic* compound which contains oxygen contains carboxylic acid ester group, such as, lactone, natural (glyceride) oil, oxyalkylated blown fatty acid *.

(1) Note. A step of oxyalkylating in the presence of carboxylic acid is assumed to fully esterify any carboxy groups present and hence is provided for in this subclass rather than indented below, unless the reference explicitly teaches otherwise, such as by specifying a stoichiometrically insufficient amount of reactants to fully esterify.

SEE OR SEARCH THIS CLASS, SUBCLASS:

132+, for similar subject matter related to breaking (resolving) or inhibiting of foams.