US PATENT SUBCLASS 528 / 153
.~.~.~ Phenolic reactant contains at least two ring moieties (includes fused or bridged ring system)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
153.~.~.~ Phenolic reactant contains at least two ring moieties (includes fused or bridged ring system)

DEFINITION

Classification: 528/153

(under subclass 129) Subject matter wherein a phenol, inorganic phenolate, or phenol ether containing a fused or bridged ring or containing two or more individual rings is reacted with an aldehyde or derivative.

(1) Note. Included within the term "two or more individual rings" may be a phenolic reactant containing a heterocyclic ring or cycloaliphatic ring in addition to the phenolic structure, or a phenolic reactant containing two phenolic rings (e.g., diphenyl ether, etc.) or a phenolic reactant containing an aryl ring in addition to the phenolic ring.

SEE OR SEARCH THIS CLASS, SUBCLASS:

154, for a phenol ether reactant wherein the ether group is not bonded to two distinct benzene rings.