US PATENT SUBCLASS 528 / 186
.~.~.~.~ Nitrogen reactant contains at least three amino-nitrogen atoms bonded to one or more carbon atoms


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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
86  DF  .~ FROM PHENOL, PHENOL ETHER, OR INORGANIC PHENOLATE {15}
176  DF  .~.~ With polycarboxylic acid or derivative as reactant {8}
183  DF  .~.~.~ Nitrogen reactant contains at least one amino-nitrogen atom {4}
186.~.~.~.~ Nitrogen reactant contains at least three amino-nitrogen atoms bonded to one or more carbon atoms {1}
187  DF  .~.~.~.~.~> At least one reactant contains three or more carboxylic acid groups or is derivative thereof


DEFINITION

Classification: 528/186

(under subclass 183) Subject matter wherein at least one reactant contains three or more amino-nitrogen atoms.

(1) Note. An amine proper for this subclass requires (a) at least three distinct nitrogen atoms bonded to at least two distinct carbon atoms, or (b) the presence of at least three nitrogen atoms bonded to the same carbon atom. Each nitrogen atom single or double bonded in the manner set forth above and consistent with the (1) Note above is an amine. The following are examples of triamines: [figure]