US PATENT SUBCLASS 508 / 424
.~.~.~ Plural phosphori bonded to the same chalcogen or chain of chalcogens (e.g., pyrophosphates, 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}
421  DF  .~ Organic phosphorus compound, wherein the phosphorus is single bonded directly to chalcogen by nonionic bonding (e.g., phosphorus acids, esters, etc.) {7}
423  DF  .~.~ Additional phosphorus attached directly or indirectly to the phosphorus by nonionic bonding {3}
424.~.~.~ Plural phosphori bonded to the same chalcogen or chain of chalcogens (e.g., pyrophosphates, etc.)

DEFINITION

Classification: 508/424

Plural phosphori bonded to the same chalcogen or chain of chalcogens (e.g., pyrophosphates, etc.):

(under subclass 423) Compositions wherein a single chalcogen or a chain of chalcogens is bonded to plural phosphori.

(1) Note. An example of a component provided for herein is [(C2H5[end subscrpt]O)2P(S)S-]3[end subscrpt]P