US PATENT SUBCLASS 516 / 67
.~.~ The agent contains organic compound containing nitrogen, except if present solely as NH4+

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
53  DF  .~ Aqueous continuous liquid phase and discontinuous phase primarily organic liquid (e.g., organosilicon* oil- or mineral-oil*-in-water, o/w emulsion) {6}
67.~.~ The agent contains organic compound containing nitrogen, except if present solely as NH4+ {3}
68  DF  .~.~.~> The nitrogen is a ring member (e.g., polyisocyanurate)
69  DF  .~.~.~> The compound contains -C(=O)NHH where substitution may be made for the hydrogen {1}
71  DF  .~.~.~> The compound contains repeating -(OCnHn)- (i.e., repeating unsubstituted oxyalkylene)

DEFINITION

Classification: 516/67

The agent contains organic compound containing nitrogen, except if present solely as NH 4+:

(under subclass 53) Subject matter in which the colloid system making or stabilizing agent* contains an organic* compound which contains an organic* compound which contains nitrogen, except for when the nitrogen is present solely as the cationic ammonium group, NH 4+.

(1) Note. Materials* used as agents* which are impurely or crudely derived from plant or animal sources, are assumed to contain nitrogen-containing organic* compounds (i.e., the DNA and proteins), unless clearly separated out, such as cellulose, carbohydrate fractions, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

15+, 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).

27, 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. 43+, for a similar colloid system making or stabilizing agent* used in bituminous-in-aqueous emulsion.

59+, for a similar colloid system making or stabilizing agent* which includes sulfoxy*.

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