Sulfonamides of high molecular weight alkyl-substituted benzene sulfonic acids and their preparation
Abstract
Abstract POLYMETHYLENE-CONTAINING SULFONAMIDES OF ALKYL SUBSTITUTED BENZENE SULFINIC ACIDS WHOSE ALKYL-SUBSTITUENT HAS A MOLECULAR WEIGHT IN THE RANGE OF 400 TO 2800 ARE OIL SOLUBLE, IMPART THERMALLY STABLE DISPERSANCY TO OIL SOLUTIONS OF THE SULFONAMIDES. THE SULFONAMIDES ARE PREFERABLY POLYMETHYLENE--CONTAINING DIPRIMARY AMINES SUCH AS POLYAZALKYLENE DIAMINE, POLYMETHYLENE DIAMENE, POLYETHYLENE IMINES OF 1000-40,000 MOLECULAR WEIGHT AND DI(AMINOPOLYMETHYLENE) PIPERAZINE. THE SULFONAMIDES ARE CONVENIENTLY PREPARED AS SOLUTES IN LIGHT MINERAL OIL (WHITE OIL TO SAE 10 TYPE HYDROCARBON OIL) BY REACTION OF SUITABLE ALKYLBENZENE SULFONIC ACID CHLORIDE AND THE POLYMETHYLENE-CONTAINING DIPRIMARY AMINE IN THE PRESENCE OF PYRIDINE AND C5-C8 ALKANE, REMOVING THE ALKENE AND PYRIDINE, TREATING THE RESIDUE WITH A LIGHT MINERAL OIL SUSPENSION OF CALCIUM HYDROXIDE AND FILTERING THE RESULTING MIXTURE.
Inventors
- 👤 R Karll
- 👤 R Lee
Bibliographic Details
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