US PATENT SUBCLASS 528 / 155
.~.~.~ Two distinct phenolic reactants or two or more hydroxy groups or phenate groups bonded to nuclear carbon atoms of the same benzene ring

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}
129  DF  .~.~ With aldehyde or derivative {18}
155.~.~.~ Two distinct phenolic reactants or two or more hydroxy groups or phenate groups bonded to nuclear carbon atoms of the same benzene ring

DEFINITION

Classification: 528/155

(under subclass 129) Subject matter wherein an aldehyde (1) is reacted with a phenol containing two distinct (-OH) groups or two distinct (-O-Salt) groups or mixtures of these groups and wherein the two (-OH) groups or two (-O-Salt) groups are bonded to two distinct carbon atoms of the same benzene ring, or (2) is reacted with two or more phenolic compounds to their phenolate salts or mixtures thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

153, for a phenolic reactant containing two distinct benzene rings and containing at least one (-OH) or (-O-Salt) group bonded to a nuclear carbon atom of a benzene ring.