US PATENT SUBCLASS 523 / 420
.~.~.~.~.~ Organic nitrogen compound contains three or more nitrogen atoms other than as solid polymer, e.g., diethylene triamine, etc.

Current as of: June, 1999
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523 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF {71}
400  DF  .~.~ Process of forming a composition containing a nonreactive material (NRM) and a polymer containing more than one 1,2-epoxy group, or a preformed polymer derived from or admixed with a reactant containing more than one 1,2-epoxy group, or with a polymer derived from an epihalohydrin and a polyhydric phenol or polyol; or composition or product thereof {24}
402  DF  .~.~.~ Product contains water per se or water of hydration as designated nonreactive material (DNRM) {7}
414  DF  .~.~.~.~ Polymer contains more than one 1,2-epoxy group or one derived from reactant containing more than one 1,2-epoxy group is further derived from or reacted with organic nitrogen or sulfur {6}
420.~.~.~.~.~ Organic nitrogen compound contains three or more nitrogen atoms other than as solid polymer, e.g., diethylene triamine, etc.

DEFINITION

Classification: 523/420

Organic nitrogen compound contains three or more nitrogen atoms other than as solid polymer, e.g., diethylene triamine, etc.:

(under subclass 414) Subject matter wherein the organic nitrogen compound contains three or more nitrogen atoms other than as contained in a solid polymer wherein the nitrogen is a repeating group, e.g., diethylene triamine, tetraethylene pentamine, etc.

(1) Note. Included herein is liquid polyacrylonitrile.

SEE OR SEARCH THIS CLASS, SUBCLASS:

406, for solid polyacrylonitrile compositions proper for this class.