US PATENT SUBCLASS 516 / 181
.~.~.~.~.~ The compound contains oxygen (e.g., cresylic acid)

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.~.~.~.~.~ The compound contains oxygen (e.g., cresylic acid) {5}
182  DF  .~.~.~.~.~.~> The compound contains sulfur (except sulfoxy*) (e.g., sulfide or disulfide linkage)
183  DF  .~.~.~.~.~.~> The compound contains polymer of substituted or unsubstituted phenol and substituted or unsubstituted aldehyde {1}
185  DF  .~.~.~.~.~.~> The compound contains carboxylic acid ester group (e.g., lactone, natural (glyceride) oil, oxyalkylated 'blown fatty acid'*) {2}
190  DF  .~.~.~.~.~.~> The compound contains -C(=O)OH or salt thereof (e.g., glyceride soap, naphthenic acid)
191  DF  .~.~.~.~.~.~> The compound contains ether group (e.g., polyethylene oxide) {2}

DEFINITION

Classification: 516/181

The compound contains oxygen (e.g., cresylic acid):

(under subclass 143) Subject matter in which the organic* compound contains oxygen, such as, cresylic acid.

(1) Note. Phenol-aldehyde resins, polymers, reaction products and the like (e.g., phenol-formaldehyde resinous materials*) are assumed to include a minor presence of ether linkages as well as the alkylene and are so classified, unless the reference explicitly teaches otherwise.

SEE OR SEARCH THIS CLASS, SUBCLASS:

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

SEE OR SEARCH CLASS

210, Liquid Purification or Separation,

708, for processes in which an emulsion is treated by a chemical or physical agent to cause the discontinuous phase to coalesce, and cross-reference art collections 922+ for oil spill cleanup (e.g., cross-reference art collection 925 for using chemical agent).