US PATENT SUBCLASS 528 / 218
.~.~.~ Two or more phenolic reactants each of which contains a single -OH group or inorganic phenolate group, or with a compound containing a single ether oxygen atom bonded to two discrete aryl rings

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}
212  DF  .~.~ Phenolic reactant contains a single phenolic -OH group or a single inorganic phenolate thereof {2}
218.~.~.~ Two or more phenolic reactants each of which contains a single -OH group or inorganic phenolate group, or with a compound containing a single ether oxygen atom bonded to two discrete aryl rings

DEFINITION

Classification: 528/218

(under subclass 212) Subject matter wherein a polymer is derived from (1) at least two phenolic reactants each of which contains only a single phenolic hydroxyl group, or a mixture of inorganic phenolates thereof, or a mixture of a phenolic reactant containing a single hydroxyl group and another phenolic reactant which is an inorganic phenolate of a phenolic reactant containing only a single hydroxyl group, or (2) wherein a phenolic reactant containing a single phenolic hydroxyl group or a phenolate thereof is reacted with a compound containing an ether oxygen atom bonded to two discrete aryl rings.