US PATENT SUBCLASS 526 / 346
.~.~ From aromatic hydrocarbon

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}
346.~.~ From aromatic hydrocarbon {3}
347  DF  .~.~.~> Interpolymerized
347.1  DF  .~.~.~> Monomer other than styrene
347.2  DF  .~.~.~> Crystalline polystyrene

DEFINITION

Classification: 526/346

(under subclass 72) Subject matter wherein the unsaturated monomer is a compound having at least one aromatic group and only carbon and hydrogen atoms.