US PATENT SUBCLASS 528 / 101
.~.~.~ Phenolic reactant contains ethylenic unsaturation or contains a 1,2-epoxy group fused to a carbocyclic 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}
87  DF  .~.~ From 1,2-epoxy-containing phenolic reactant or with 1,2-epoxy-containing reactant {12}
101.~.~.~ Phenolic reactant contains ethylenic unsaturation or contains a 1,2-epoxy group fused to a carbocyclic ring


DEFINITION

Classification: 528/101

(under subclass 87) Subject matter wherein the phenol, phenol ether, or inorganic phenolate reactant contains (1) ethylenic unsaturation, or (2) contains at least one 1, 2-epoxy group fused to a ring composed solely of carbon atoms.

(1) Note. A fused ring monomer for purposes of this subclass requires that a ring composed solely of carbon atoms be attached at two of its adjacent nuclear carbon atoms to a single oxygen atom so that the adjoined carbons and the oxygen atom form an additional ring structure.

SEE OR SEARCH CLASS

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