Epichlorohydrin → HCID 12520694, compound

293 g of n-octylmercaptan and 5 g of tetrabutylammonium chloride are placed into a 1 liter Sovirel reactor (double-walled reaction vessel) fitted with thermometer, stirrer, dropping funnel, dosing dropping-funnel and pH-electrode. To this solution are added dropwise within 80 minutes at a pH value of 11.6-12.0, with stirring and intensive cooling, 184 g of epichlorohydrin. The pH value is maintained constant over the total period of 80 minutes by the corresponding controlled addition of about 10 ml of a 22% aqueous sodium hydroxide solution. The reaction temperature should not exceed 20° C. After completion of the exothermic reaction, 305 ml of 22% sodium hydroxide solution are introduced dropwise within 15 minutes. The reaction mixtue is subsequently stirred at 50° C. for 30 minutes; the aqueous phase is then separated, the organic phase is washed twice with 200 g of water each time, and the organic phase is fractionated in vacuo. The yield is 382 g (94% of theory) with a boiling point of 92°-94° C. at 0.04 mbar and a refractive index of nD20 : 1.4718.

1. customfitted with thermometer, stirrer
2. additionTo this solution are added dropwise within 80 minutes at a pH value of 11.6-12.0
3. customexceed 20° C
4. additionare introduced dropwise within 15 minutes
5. stirringThe reaction mixtue is subsequently stirred at 50° C. for 30 minutes
6. customthe aqueous phase is then separated
7. washthe organic phase is washed twice with 200 g of water each time

ORD record

ord-2002a0dc1cff4c04aa988b968fd6a530

Source dataset

uspto-grants-1990_06

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04931576