US PATENT SUBCLASS 528 / 100
.~.~.~ Phenolic reactant contains a carboxylic acid or carboxylic acid derivative thereof

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}
87  DF  .~.~ From 1,2-epoxy-containing phenolic reactant or with 1,2-epoxy-containing reactant {12}
100.~.~.~ Phenolic reactant contains a carboxylic acid or carboxylic acid derivative thereof

DEFINITION

Classification: 528/100

(under subclass 87) Subject matter wherein the phenol, phenol ether, or inorganic phenolate reactant contains a carboxylic acid group or is a derivative thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

96, for a cyclic anhydride, lactone, lactam, or imide-containing phenol, phenol ether, or inorganic phenolate reactant.

271, for an explanation of the term "carboxylic acid derivative".

SEE OR SEARCH CLASS

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