US PATENT SUBCLASS 585 / 428
.~.~ Nonring moiety of one molecule bonded to nonring moiety of other, e.g., polystyrene, etc.

Current as of: June, 1999
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585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

400  DF  AROMATIC COMPOUND SYNTHESIS {15}
422  DF  .~ By condensation of entire cyclic molecules or entire hydrocarbyl moieties thereof, e.g., polymerization, etc. {4}
428.~.~ Nonring moiety of one molecule bonded to nonring moiety of other, e.g., polystyrene, etc. {1}
429  DF  .~.~.~> Through residue of nonring molecule, e.g., butadience, etc.

DEFINITION

Classification: 585/428

Nonring moiety of one molecule bonded to nonring moiety of other, e.g., polystyrene, etc.:

(under subclass 422) Subject matter in which ring-containing molecules having side-chain or other acyclic components are joined by means of the acyclic components, the ring moieties becoming mere substituents on the resulting condensed acyclic moiety.

SEE OR SEARCH THIS CLASS, SUBCLASS:

406, for a process where only two molecules of a vinyl aromatic are condensed with each other.

502+, for polymerization of olefins which do not have an aromatic substituent.

SEE OR SEARCH CLASS

526, Synthetic Resins or Natural Rubbers,

346, for solid polystyrene resins and methods of manufacture.