US PATENT SUBCLASS 526 / 267
.~.~.~ Polymer contains coumarone and indene

Current as of: June, 1999
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526 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {8}
72  DF  .~ POLYMERS FROM ONLY ETHYLENIC MONOMERS OR PROCESSES OF POLYMERIZING, POLYMERIZABLE COMPOSITIONS CONTAINING ONLY ETHYLENIC MONOMERS AS REACTANTS OR PROCESSES OF PREPARING {43}
266  DF  .~.~ From monomer containing oxygen as part of a heterocyclic ring {5}
267.~.~.~ Polymer contains coumarone and indene

DEFINITION

Classification: 526/267

(under subclass 266) Subject matter wherein the interpolymer is formed from at least two monomers, one of said monomers being a coumarone type material and the other monomer is of the indene type.

(1) Note. The polymers herein need not contain coumarone, per se, and indene, per se. It is sufficient for this subclass if derivatives of these compounds are polymerized. Derivatives are considered as being those products wherein the hydrogen atoms of these compounds have been replaced by other functional groups.

(2) Note. Patents herein generally apply to those resins that are obtained by polymerizing mixtures of material containing coumarone and indene which have been obtained in coal-tar refining.