C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
260/459.8
C07F 9/20 (2006.01)
Patent
CA 1067910
A PROCESS FOR THE PRODUCTION OF S-ALKYL PHOSPHORO DIHALOGENIDODITHIOTE Abstract of the Disclosure S-alkyl phosphoro dihalogenidodithioate is prepared by the reaction of alkyl mercaptan with a phosphorous trihalogenide (PX3) and elemental sulfur in the presence of a sulfurization catalyst. The alkyl mercaptan may be reacted with the phosphorous trihalogenide either in a separate vessel or in the same vessel as the subsequent sulfurization of these reaction products. Sufficient sulfur is used to sulfurize substantially all phos- phorous atoms present to a penta-valent state. If a sufficient excess of phosphorous trihalogenide is not used in the initial reaction either additional phosphoroustrihalogenide or PSX3 is added so that at the end of sulfurization there is at least about one mole of PSX3 present for each mole of S,S-dialkyl phosphorohalogenido trithioate and two moles for each mole of S,S,S-trialkyl phosphorotetrathioate present. The PSX3 and dialkyl and trialkyl compounds are held at sufficient temperature for a sufficient time to convert them substantially to S-alkyl phosphorodihalogenidodithioate. A period of at least about 1 hour at not less than about 150°C is preferred. The PSX3 and product (S-alkyl phosphorodihalogenidodithioate) may be removed as distillation overheads and the residue left as a heel for subsequent cycles.
260615
LandOfFree
Process for the production of s-alkyl phosphoro... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the production of s-alkyl phosphoro..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of s-alkyl phosphoro... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-507228