US PATENT SUBCLASS 528 / 183
.~.~.~ Nitrogen reactant contains at least one amino-nitrogen atom

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.~.~.~ Nitrogen reactant contains at least one amino-nitrogen atom {4}
184  DF  .~.~.~.~> Nitrogen reactant having at least one amino-nitrogen atom contains a carboxylic acid group or is a derivative thereof
185  DF  .~.~.~.~> Phenolic reactant contains at least two aryl rings and two diverse phenolic to oxygen bonds
186  DF  .~.~.~.~> Nitrogen reactant contains at least three amino-nitrogen atoms bonded to one or more carbon atoms {1}
188  DF  .~.~.~.~> Reactant contains three or more carboxylic acid groups or is derivative thereof {1}

DEFINITION

Classification: 528/183

(under subclass 176) Subject matter wherein a nitrogen-containing compound is a reactant and wherein at least one nitrogen atom thereof is an amino-nitrogen atom.

(1) Note. The amino-nitrogen atom may be in any of the reactants, for instance, it may be in the phenolic reactant or in the polycarboxylic acid or derivative reactant, or in a nonphenolic or nonpolycarboxylic reactant.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, see the Glossary for the definition of the term "amine".