Patent Number: 6,294,683

Title: Solid/liquid phase transfer system

Abstract: The present invention discloses a technique for reacting a first liquid chemical compound with a second liquid chemical compound which comprises (1) supporting the first liquid chemical compound on a solid support; (2) subsequently bringing the solid support into contact with the second liquid chemical compound; and (3) allowing the first chemical compound to react with the second chemical compound in the presence of a phase transfer catalyst to produce a reaction product. This technique is particularly useful in the synthesis of sulfur containing organosilicon compounds of the formula Z-Alk-S.sub.n -Alk-Z wherein Z is selected from the group consisting of ##STR1## wherein R.sup.1 is an alkyl group of 1 to 4 carbon atoms, cyclohexyl or phenyl; wherein R.sup.2 is an alkoxy group of 1 to 8 carbon atoms or a cycloalkoxy group of 5 to 8 carbon atoms; wherein Alk is a divalent hydrocarbon of 1 to 18 carbon atoms; and wherein n is an integer of 2 to 8. For instance, such sulfur containing organosilicon compounds can be made by reacting aqueous solutions of various polysulfidic anions in saturated sodium chloride brine solutions with chloropropyltriethoxysilane (CPTES) supported on carbon black in the presence of a phase transfer catalyst.

Inventors: Johnson; Scott Edwards (Mogadore, OH), Parker; Dane Kenton (Massillon, OH), Shah; Niranjan (Akron, OH)

Assignee: The Goodyear Tire & Rubber Company

International Classification: C07F 7/18 (20060101); C07F 7/00 (20060101); C07F 007/08 (); C07F 007/18 ()

Expiration Date: 09/25/2018