专利号:US-4910330-A 优先权日:1987-09-25 标题 :Synthesis of sulfonic acids and carboxylic acid ester derivatives thereof 发明人:MCGEE DENNIS E; HALLEN TED S 权利人:UNION OIL CO 摘要:Hydroxy sulfonic acids in general and isethionic acid (2-hydroxy ethyl sulfonic acid) in particular can be prepared at 99+% purity and good yields by the selective oxidation of a precursor hydroxy mercaptan with hydrogen peroxide. The resulting product is pure enough to be used directly in the synthesis of sulfo-acrylic esters which are finding considerable use as stabilizers in producing vinylidene chloride copolymers used for FDA approved packaging films.
专利号:US-4987250-A 优先权日:1987-09-25 标 题:Synthesis of hydroxy sulfonic acids 发明人:MCGEE DENNIS E; HALLEN TED S 权利人:UNION OIL CO 摘要:Hydroxy sulfonic acids in general and isethionic acid (2-hydroxy ethyl sulfonic acid) in particular can be prepared at 99+% purity and good yields by the selective oxidation of a precursor hydroxy mercaptan with hydrogen peroxide. The resulting product is pure enough to be used directly in the synthesis of sulfo-acrylic esters which are finding considerable use as stabilizers in producing vinylidene chloride copolymers used for FDA approved packaging films.
专利号:US-5670465-A 优先权日:1993-01-08 标题 :Preparation of p-fuchsones and synthesis of p-dihydroxylated aromatic compounds therefrom 发明人:COSTANTINI MICHEL; MANAUT DANIEL; MICHELET DANIEL 权利人:RHONE POULENC CHIMIE 摘要:p-Dihydroxylated aromatic compounds are prepared via the oxidation of p-fuchsones, the latter advantageously being synthesized by reacting a phenolic compound having at least one hydrogen atom in the para-position to the hydroxyl function with a non-enolizable ketonic compound, in the presence of a catalytically effective amount of an acid catalyst and, optionally, a cocatalytically effective amount of an ionizable sulfur-containing compound.
专利号:US-10689333-B1 优先权日:2019-02-22 标 题 :2-mercaptoethanol synthesis 发明人:KREIDER JASON L; HASENBERG DANIEL M; PAUWELS ALEX 权利人:CHEVRON PHILLIPS CHEMICAL CO LP 摘要:A process comprising reacting, in a reactor having a fixed bed containing a solid catalyst which contains a zeolite, hydrogen sulfide and an oxirane in the presence of the solid catalyst to yield a reaction product with contains a mercapto-alcohol. A reactor system includes the reactor, an oxirane feed stream, a hydrogen sulfide feed stream, a fixed bed containing the solid catalyst placed inside the reactor, and an effluent stream containing the reaction product. The hydrogen sulfide and the oxirane are present in a mole ratio in a range of about 5:1 to 50:1.
专利号:US-5466839-A 优先权日:1993-01-08 标 题 :Preparation of p-fuchsones and synthesis of p-dihydroxylated aromatic compounds therefrom
专利号:US-5585526-A 优先权日:1993-01-08 标 题:Preparation of P-fuchsones and synthesis of P-Dihydroxylated aromatic compounds therefrom