US PATENT SUBCLASS 508 / 421
.~ Organic phosphorus compound, wherein the phosphorus is single bonded directly to chalcogen by nonionic bonding (e.g., phosphorus acids, esters, 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.~ Organic phosphorus compound, wherein the phosphorus is single bonded directly to chalcogen by nonionic bonding (e.g., phosphorus acids, esters, etc.) {7}
422  DF  .~.~> The phosphorus is in a ring
423  DF  .~.~> Additional phosphorus attached directly or indirectly to the phosphorus by nonionic bonding {3}
427  DF  .~.~> Nitrogen or halogen bonded directly to the phosphorus
428  DF  .~.~> Nitrogen attached indirectly to the phosphorus by nonionic bonding (e.g., phosphatides, etc.)
429  DF  .~.~> Chalcogen attached indirectly to the phosphorus by nonionic bonding {2}
433  DF  .~.~> Divalent chalcogen double bonded directly to the phosphorus {5}
441  DF  .~.~> Three divalent chalcogens single bonded directly to trivalent phosphorus {1}

DEFINITION

Classification: 508/421

Organic phosphorus compound, wherein the phosphorus is single bonded directly to chalcogen by nonionic bonding (e.g., phosphorus acids, esters, etc.):

(under subclass 110) Compositions which contain an organic phosphorus compound wherein phosphorus is (1) single bonded directly to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) by nonionic bonding and is (2) attached directly or indirectly by nonionic bonding to carbon of an organic compound.

(1) Note. See Notes to the Class Definition for the definition of an organic compound.

(2) Note. An example of a component provided for herein is (C6H5[end subscrpt])2P-O-C6[end subscrpt]H5