CAS: 12034-39-8; Sodium Tetrasulfide

专利信息

专利号:US-3979460-A
优先权日:1974-07-01
标 题 :Process for the preparation of an organomercaptophenol from sulfur, a 2,6-disubstituted phenol, and an activated olefin or an epoxy compound
发明人：HAY ALLAN S
权利人:GEN ELECTRIC
摘要:A process for the preparation of an organomercaptophenol is described which comprises the reaction of sulfur with a 2,6-disubstituted phenol carried out in the presence of (1) a base, (2) an activated olefin or an epoxy compound, (3) and a solvent with a high dielectric constant. The organomercaptophenols produced by this process are useful as monomers in the synthesis of esters, carbonates, ethers, epoxy compounds, among many other chemicals synthesized from monohydric phenols. In addition, the oganomercaptophenols are also useful as antioxidants.

专利号:US-4064158-A
优先权日:1974-07-01
标题:Process for the preparation of an organomercaptophenol from sulfur, a 2,6-disubstituted phenol, and an activated olefin or an epoxy compound
发明人：HAY ALLAN S
权利人:GEN ELECTRIC
摘要:A process for the preparation of an organomercaptophenol is described which comprises the reaction of sulfur with a 2,6-disubstituted phenol carried out in the presence of (1) a base, (2) an activated olefin or an epoxy compound, (3) and a solvent with a high dielectric constant. The organomercaptophenols produced by this process are useful as monomers in the synthesis of esters, carbonates, ethers, epoxy compounds, among many other chemicals synthesized from monohydric phenols. In addition, the organomercaptophenols are also useful as antioxidants.

专利号:US-6172251-B1
优先权日:1998-07-24
标题:Solid/liquid phase transfer system
发明人：PARKER DANE KENTON
权利人:GOODYEAR TIRE & RUBBER
摘要: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-Sn-Alk-Z wherein Z is selected from the group consisting ofwherein R1 is an alkyl group of 1 to 4 carbon atoms, cyclohexyl or phenyl; wherein R2 is alkoxy group of 1 to 8 carbon atoms, cycloalkoxy group of 5 to 8 carbon atoms or an alkylmercapto group of 1 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.

专利号:US-6294683-B1
优先权日:1999-01-19
标 题:Solid/liquid phase transfer system
发明人：JOHNSON SCOTT EDWARDS; PARKER DANE KENTON; SHAH NIRANJAN
权利人:GOODYEAR TIRE & RUBBER
摘要: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-Sn-Alk-Z wherein Z is selected from the group consisting ofwherein R1 is an alkyl group of 1 to 4 carbon atoms, cyclohexyl or phenyl; wherein R2 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.

专利号:US-4082808-A
优先权日:1974-07-01
标 题 :Thiobis-2,6-disubstituted phenol
发明人：HAY ALLAN S
权利人:GEN ELECTRIC
摘要:Novel thiobis-2,6-disubstituted phenols are described which are useful as monomers in the synthesis of polycarbonates, polyesters, epoxy resins, among many others chemicals synthesized from polyhydric phenols. In addition, the thiobisphenols are also useful as antioxidants.

专利号:DE-19541404-A1
优先权日:1995-11-07
标 题 :Process for the selective synthesis of silylalkyl disulfides