US PATENT SUBCLASS 516 / 19
.~.~.~ The compound contains -C(=O)OH group or salt thereof

Current as of: June, 1999
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516 /   HD   COLLOID SYSTEMS AND WETTING AGENTS; SUBCOMBINATIONS THEREOF; PROCESSES OF

9  DF  CONTINUOUS LIQUID OR SUPERCRITICAL PHASE: COLLOID SYSTEMS; COMPOSITIONS CONTAINING AN AGENT FOR MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF PREPARING THE COMPOSITIONS (E.G., THICKENING AGENT; PROTECTIVE COLLOID AGENT; COMPOSITION CONTAINING AN EMULSIFYING AGENT WITH NO DISPERSANT* DISCLOSED; ORGANIC LIQUID EMULSIFIED IN ANHYDROUS HF) {5}
10  DF  .~ Having discontinuous gas or vapor phase, i.e., foam {6}
18  DF  .~.~ The agent contains organic compound containing oxygen {1}
19.~.~.~ The compound contains -C(=O)OH group or salt thereof

DEFINITION

Classification: 516/19

The compound contains -C(=O)OH or salt thereof:

(under subclass 18) Subject matter in which the organic* compound contains the -C(=O)OH group or salt thereof.

(1) Note. "-C(=O)OH group or salt thereof" does NOT include carboxylic acid esters (-C(=O)OR where R is an organic* group).

(2) Note. When classifying foam colloid systems, the agent should not be confused with the gas phase. The (colloid

system making or stabilizing) agent is the component which tends to aggregate at the boundary between the gas phase and the liquid phase to facilitate or assist in the persistence of the system for the degree of time sufficient for its intended use.

SEE OR SEARCH THIS CLASS, SUBCLASS:

18+, for a similar colloid system making or stabilizing agent* used in foam colloid system.

20, for a similar colloid system making or stabilizing agent* used in organic* liquid continuous phase with organic* liquid discontinuous phase (e.g., oil-in-oil emulsion).

28+, for a similar colloid system making or stabilizing agent* used in organic* liquid continuous phase with inorganic* liquid discontinuous phase (e.g., water-in-oil emulsion). 31+, for a similar colloid system making or stabilizing agent* used in organic* liquid continuous phase with discontinuous phase primarily solid or semisolid.

39, for a similar colloid system making or stabilizing agent* where the organic* compound which contains oxygen is derived from a native precursor in the bituminous material* and it is subjected to an in situ reaction with an inorganic* alkaline agent.

47+, for a similar colloid system making or stabilizing agent* used in bituminous-in-aqueous emulsion.

72+, for a similar colloid system making or stabilizing agent* used in aqueous continuous phase with discontinuous phase primarily organic* liquid (e.g., oil-in-water emulsion).

77+, for a similar colloid system making or stabilizing agent* used in aqueous continuous phase with discontinuous phase primarily (nonbituminous) solid.