Sulfur Containing Patents (Class 554/85)
- Twitchell or Pfeilring reagent (i.e., product of sulfonation of fatty material in the presence of an aromatic hydrocarbon or phenol) (Class 554/89)
- The sulfoxy is in the alcohol moiety (e.g., sulfate esters of fatty acid monoglycerides, etc.) (Class 554/90)
- Nitrogen bonded directly to carbon in the alcohol moiety (Class 554/91)
- Having -S(=O)(=O)-O-X attached indirectly to the single bonded oxygen of the carboxyl group by a single carbon or a chain consisting of carbons, which chain or carbon may include a ring, wherein X is hydrogen or a cation (e.g., isethionates, etc.) (Class 554/92)
- Purification or recovery (Class 554/93)
- Nitrogen containing (e.g., sulfonamide containing, etc.) (Class 554/94)
- Carbocyclic ring in the acid moiety (Class 554/95)
- Carbon bonded directly to -S(=O)(=O)OH or to -O-S(=O)(=O)OH, wherein H may be replaced by a cation or by an ester forming group (e.g., sulfonic acid sulfate monoester, etc.) (Class 554/96)
- Metal salt (Class 554/97)
- Processes utilizing anhydrous sulfur trioxide (e.g., in gaseous form, in sulfur dioxide solution, etc.) (Class 554/98)
- Processes of sulfonating in the presence of lower carboxylic acid, anhydride, acid halide, or phosphorus containing material (Class 554/99)
- Purification or recovery (Class 554/100)