US PATENT SUBCLASS 516 / 191
.~.~.~.~.~.~ The compound contains ether group (e.g., polyethylene oxide)

Current as of: June, 1999
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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}
191.~.~.~.~.~.~ The compound contains ether group (e.g., polyethylene oxide) {2}
192  DF  .~.~.~.~.~.~.~> The compound is a carbohydrate* or carbohydrate-derivative*
193  DF  .~.~.~.~.~.~.~> The compound contains substituted or unsubstituted benzene ring (e.g., oxyalkylated bisphenol)

DEFINITION

Classification: 516/191

The compound contains ether group (e.g., polyethylene oxide):

(under subclass 181) Subject matter in which the organic* compound which contains oxygen contains ether group, such as, polyethylene oxide.

SEE OR SEARCH THIS CLASS, SUBCLASS:

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