US PATENT SUBCLASS 508 / 264
.~.~.~ Vinyl pyridine polymer (e.g., polyvinylpyridine, vinyl-pyridine-alkyl acrylate copolymer, etc.)

Current as of: June, 1999
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508 /   HD   SOLID ANTI-FRICTION DEVICES, MATERIALS THEREFOR, LUBRICANT OR SEPARATE COMPOSITIONS FOR MOVING SOLID SURFACES, AND MISCELLANEOUS MINERAL OIL COMPOSITIONS

110  DF  LUBRICANTS OR SEPARANTS FOR MOVING SOLID SURFACES AND MISCELLANEOUS MINERAL OIL COMPOSITIONS (E.G., WATER CONTAINING, ETC.) {53}
243  DF  .~ Heterocyclic ring compound; a heterocyclic ring is one having as ring members only carbon and at least one hetero atom selected from nitrogen and chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) {4}
244  DF  .~.~ The hetero ring contains six members including nitrogen and carbon (e.g., pyridine, picoline salts, etc.) {7}
264.~.~.~ Vinyl pyridine polymer (e.g., polyvinylpyridine, vinyl-pyridine-alkyl acrylate copolymer, etc.) {1}
265  DF  .~.~.~.~> Non-pyridine organic nitrogen salt of the polymer, or a non-pyridine organic nitrogen compound is present

DEFINITION

Classification: 508/264

Vinyl pyridine polymer (e.g., polyvinylpyridine, vinyl-pyridine-alkyl acrylate copolymer, etc.):

(under subclass 244) Compositions wherein the component containing the six-membered hetero ring results from homopolymerization or copolymerization of a vinyl pyridine.

(1) Note. Homopolymerization or copolymerization normally occurs through the olefinic double bond.