US PATENT SUBCLASS 44 / 396
.~.~.~.~.~ One of the monomers contains a benzene ring (e.g., styrene, etc.)

Current as of: June, 1999
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44 /   HD   FUEL AND RELATED COMPOSITIONS

300  DF  LIQUID FUELS (EXCLUDING FUELS THAT ARE EXCLUSIVELY MIXTURES OF LIQUID HYDROCARBONS) {31}
385  DF  .~ Containing organic -C(=O)O- compound (e.g., fatty acids, etc.) {8}
388  DF  .~.~ The single bonded oxygen is bonded directly to an additional carbon, which carbon may be single bonded to any element but may be multiple bonded only to carbon (i.e., carboxylic acid esters) {4}
389  DF  .~.~.~ Plural -C(=O)O- groups attached to each other directly or indirectly by nonionic bonding (e.g., polyesters, half ester-half acid compounds, etc.) {5}
393  DF  .~.~.~.~ Copolymer of olefinically unsaturated hydrocarbon monomer and additional monomer (e.g., ethylene-vinyl acetate copolymers, etc.) {3}
396.~.~.~.~.~ One of the monomers contains a benzene ring (e.g., styrene, etc.)

DEFINITION

Classification: 44/396

One of the monomers contains a benzene ring (e.g., styrene, etc.):

(under subclass 393) Compositions wherein a benzene ring is present in one of the monomers that forms the copolymer.

(1) Note. Examples of ingredients provided for herein are: a copolymer of ethylene and vinyl benzoate, and alkyl esters of styrene-maleic anhydride copolymers.